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https://hackaday.com/2010/08/06/dummy-loads-and-heat-sinks/
|
Dummy Loads And Heat Sinks
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"bench panel",
"dummy load",
"mosfet",
"power supply",
"switching"
] |
In [Dave’s] latest episode of the EEVblog
he takes a look at constant current dummy loads
. These are used to test power supply designs and instead of just chaining resistive loads together every time he’s decided to look into building a tool for the job. What he ends up with is a reliable constant current load that can be dialed anywhere from 1.5 mA up to just over 1A. There’s even an onboard meter so you don’t have to probe the setting before use.
It may look like he sent his design off to the board house for production but that’s actually a re-purposed PCB. In walking though his junk-box assembled dummy load [Dave] shares some great tips, like using multiple 1% resistors instead of shelling our for one large and accurate power resistor. But our favorite part comes at about 12:00 when he takes us through some rough math in calculating heat sinks. We’ve always just guessed, but like any good teacher, [Dave] explains the theory and then measures the actual performance taking the guesswork out of the design. See for yourself after the break.
[youtube=http://www.youtube.com/watch?v=8xX2SVcItOA]
[Thanks Strider_mt2k]
| 21
| 21
|
[
{
"comment_id": "166182",
"author": "Osgeld",
"timestamp": "2010-08-06T15:15:50",
"content": "Impressive, I learned something from one of his videos (aside from how to blow up a multimeter)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166187",
"author": "MegaRain",
"timestamp": "2010-08-06T15:38:19",
"content": "Finally, some one explains how the heat sync calculations work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166213",
"author": "Charper",
"timestamp": "2010-08-06T17:21:30",
"content": "One thing is really misleading about the simplified calculations he’s using. For a passive (no forced air flow) heatsink, the *C/W rating applies only at one specific temperature. Normally it’s 60 degrees, but sometimes it’s defined much higher.Why do you care?Generally, the performance will be worse than calculated at lower power dissipation. Normally this is only a problem if you’re operating in high ambient temperatures. On the other end, the performance is better (to a point) for higher and higher heatsink temperatures. Be careful though, because there’s a point where your heatsink performance will suddenly plummet again.Lesson: a heatsink manufacturer will give you a nice chart of temp rise / power. You should use this if your simple *C/W calculation puts the design close to your temperature limits.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166214",
"author": "Charper",
"timestamp": "2010-08-06T17:22:35",
"content": "Err… defined at one specific temperature rise*Sorry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166257",
"author": "poiso",
"timestamp": "2010-08-06T19:18:00",
"content": "lol, I watched his video on youtube a few days ago. was pretty cool actually. learned a lot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166272",
"author": "Sanchoooo",
"timestamp": "2010-08-06T19:49:14",
"content": "Thanks for sharing. Was thinking of replacing my 2x12v power supplies(cable modem & router) for a single psu and maybe make something more efficient.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166316",
"author": "DaveJones",
"timestamp": "2010-08-06T23:08:39",
"content": "@CharperI mentioned the calculations were back-of-the-envelope stuff, designed to get you in the ballpark. Yes, if you are doing serious thermal design then you have to go into the details, and they can get a lot messier than simply taking into account the thermal performance graph for the heatsink too!Dave.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166320",
"author": "smellsofbikes",
"timestamp": "2010-08-06T23:35:24",
"content": "This is a neat hack, but you can do something similar but more sophisticated by using a FET as your resistive load: run it in its active range, rather than saturated. The FET is a *lot* cheaper than equivalent power resistors, it’s fast, and it dumps heat nicely. Plus it’s infinitely adjustable, as fast as you’d like it to go. Basically you use it as a current-sense resistor, and drive the gate with an op-amp that’s measuring the voltage drop across the FET. It’s a reasonably common technique and works beautifully. We use them as loads for testing LED drivers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166347",
"author": "Leithoa",
"timestamp": "2010-08-07T02:15:47",
"content": "Point of fact, 10 10ohm 1% resistors in sereies does NOT equal one 100ohm 1% resistor, it equals 1 100ohm 10% resistor.While probably still being cheaper than a production resistor it doesn’t give you the same confidence level, and thus cannot be used interchangeably.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166373",
"author": "phishinphree",
"timestamp": "2010-08-07T03:28:31",
"content": "@LeithoaWhile you are correct when the resistors are connected in series, you have missed the point. The resistors are connected in parallel in this project. connecting 10, 10ohm, 1% resistors in parallel is, in fact, equivalent to 1, 1ohm 1% resistor which can handle a power equal to the sum of each resistors power rating.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166376",
"author": "Spork",
"timestamp": "2010-08-07T03:59:28",
"content": "phishinphree is right, in parallel it’s still 1%.This is a very useful tool to have around and I think I’ll be building one. That said, the guy has a really squeaky voice that was almost painful to listen to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166416",
"author": "saimhe",
"timestamp": "2010-08-07T08:43:17",
"content": "A quick-and-dirty version: simply a powerful enough BJT with a heatsink, the base current (from an external power supply) is adjusted with a pot. An additional smaller BJT can bring the pot current significantly down. Occasional power supply testing seldom requires more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166417",
"author": "strider_mt2k",
"timestamp": "2010-08-07T08:43:27",
"content": "I would love to scale this up for testing power supplies into the 10’s and 100’s of amps.Would it be as simple as scaling up the components?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166535",
"author": "sgf",
"timestamp": "2010-08-07T16:08:40",
"content": "“Point of fact, 10 10ohm 1% resistors in sereies does NOT equal one 100ohm 1% resistor, it equals 1 100ohm 10% resistor.”How do you work this out? I assumed that a 10ohm 1% resistor would be in the range 9.9 ohm to 10.1 ohm. Summing up 10 of those in series would give 99 ohm to 101 ohm, which would be equivalent to 100 ohm 1%.Furthermore, unless the errors are all in the same direction, some of the errors would cancel out. I’m not sure what the correlation in error you’d get on a batch of resistors is, but I’d hope the final error would be less than 1%!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166539",
"author": "wernicke",
"timestamp": "2010-08-07T16:23:42",
"content": "@Leithoa, @phishinphree, and others,Is the tolerance of 10×1% series resistors really 10%? I don’t know the calculation, but it seems like those old stats concepts with standard deviations and bell curves would be necessary to find the total tolerance. It’s been >20 years since I barely passed that class and have only occasionally had to revisit that stuff since then.Anyone know how to calculate tolerance stackup of resistors?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166583",
"author": "Leithoa",
"timestamp": "2010-08-07T20:14:37",
"content": "@sgfYou’re partially correct, you may get cancelation of errors. However there is now way that you can be CERTAIN that there will be cancelation. The point of the xx% rating is the manufacturer is guaranteeing that the product is at worst 1% off of the listed value, it could very well be exactly the listed value.The formula to find the total resistance of a set of SERIES resistors is R=r1+r2+…rn and each of those resistance values is known to an accuracy of 1%. When a value with an uncertainty is added or subtracted the total uncertainty is found by adding all of the uncertainties together ie; {u}R={u}r1+{u}r2+…{u}rn. So for 10 1% resistors the uncertainty in the resistor value is R=1%+1%+1%+1%+1%+1%+1%+1%+1%+1%=10%As was rightly pointed out by phishinphree and others the resistors are used in parallel, which uses a different formula to find the total resistance,R=(1/r1+1/r2+…1/rn)^-1. So given that we have 10 10ohm resistors in parallel we have R=10(1/10)^-1 =1ohmSo to find the uncertainty in that total resistance we must use a different formula.{u}R=R^2 SQRT({u}r1/r1^2)^2+({u}r2/r2^2)^2+..+({u}rn/rn^2)^2){u}R=1^2 SQRT(.01/10^2)^2+(.01/10^2)^2+..+(.01/10^2)^2)=.000346 or +/-.03% for our total of 1ohm resistance. Which gives us GREATER tolerances than what we started withThese websites may answer more completely/clearlyhttp://www.ee.unb.ca/tervo/ee2791/errors3.htmhttp://www.lhup.edu/~dsimanek/scenario/labman4/errorsim.htmhttp://www.unf.edu/coas/chemphys/phys/physics2/lab/manual/Lab%204%20-%20Series%20and%20Parallel%20DC%20Circuits%20-%20Spring%202010.pdfhttp://www.engr.uky.edu/~jdjacob/me310/Labs/exp3manual.pdf",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166730",
"author": "sgf",
"timestamp": "2010-08-08T07:40:35",
"content": "@ LeithoaI’m well aware of the properties of summing probability distributions – that’s why I mentioned it.Thank you for providing links, but I’m afraid they don’t back up what you’re saying about summing relative errors.I suggest you read up on the difference between absolute and relative error.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166743",
"author": "Leithoa",
"timestamp": "2010-08-08T10:16:54",
"content": "Indeed a rookie mistake, in my haste to recall the formula for the uncertainty in parallel resistors I skimmed over the fractional uncertainty tid bit, Good thing someone(SGF) was paying attention.While trivial to fix in terms of arithmatic(Rs=.316%,Rp=.00316%), the real world consequences could be dire, kind of like when NASA forgot to use the same units for their one mars rover.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166767",
"author": "marto",
"timestamp": "2010-08-08T13:21:19",
"content": "Excellent vid and info, thanks Dave.…and your “squeaky” voice is champion. It’s so much more interesting and energetic than the dull monotone professor drawl that most of us EE’s are used to. good job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167031",
"author": "Anonymouse",
"timestamp": "2010-08-09T10:49:59",
"content": "For small runs, drift is far more important than tolerance. Constant errors can be trimmed out, or zeroed in software. For differential amplifiers, I start with 1% metal film resistors and bin them with a multimeter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167212",
"author": "Triffid Hunter",
"timestamp": "2010-08-10T03:57:27",
"content": "Ultimate guide to heatsink calculations:http://www.mcmanis.com/chuck/robotics/projects/esc2/FET-power.htmlapplies to BJTs and resistors as well, just need to calculate power output a bit differentlybookmark it already",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.517288
|
||
https://hackaday.com/2010/08/06/make-your-own-mindstorm-sensors/
|
Make Your Own Mindstorm Sensors
|
Mike Szczys
|
[
"Peripherals Hacks"
] |
[
"lejos",
"mindstorm",
"nxt",
"rangefinder",
"sensor"
] |
[Stewart Allen] acquired a Mindstorm kit about a month ago and he’s already
building his own sensors for it
. He wanted a more accurate range finder with a narrower measurement field than the stock sensor. Mindstorm has the option to communicate with sensors via an I2C bus. [Stewart] set up an ATtiny45 to act as a the slave on the bus, facilitating the analog measurement of the distance voltage by using and lookup table, and handling the data transfer with the NXT brick. His testing setup is pictured above, with an AVR Dragon for programming the tiny45 and a Bus Pirate for sniffing the I2C data during the development process. The sensor, looking great on a professionally made PCB he ordered, requires a simple driver that [Stewart] hammered out for use with leJOS, the
alternative
Mindstorm
firmware we’ve seen before
.
| 16
| 16
|
[
{
"comment_id": "166161",
"author": "ejonesss",
"timestamp": "2010-08-06T13:47:44",
"content": "the advantage here is if the sensors are classified as medical device because of their sensitivity then by making your own you do not need a license or a doctor working on the inside to get you medical grade sensors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166163",
"author": "Mike Szczys",
"timestamp": "2010-08-06T13:56:52",
"content": "@ejonesss: What?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166165",
"author": "Elias",
"timestamp": "2010-08-06T14:09:39",
"content": "Disregard it Mike, reading that comment made my brain hurt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166172",
"author": "ejonesss",
"timestamp": "2010-08-06T14:32:12",
"content": "@ Elias i remember back in the 80’s working with someone who does brain research and they had to have medical license to get the official sensors because something like in the wrong hands you could cause harm if you managed to send a signal back into the brain.now maybe they was using that as an excuse to say it was proprietary technology or little was known about the brain that there was a legit fear of causing emotional damage if you could feed signals back or maybe the sensor tips was coated in a conductive substance that was a controlled substance requiring fda monitoring.just like lithium is todaybatteries are made expensive to discourage meth making from the metal lithium in batteries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166173",
"author": "Osgeld",
"timestamp": "2010-08-06T14:35:10",
"content": "“batteries are made expensive to discourage meth making from the metal lithium in batteries.”yea that’s one easy line for marketing to tell you, but even without that bs on top they are just expensive cause of the materials",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166177",
"author": "Anon",
"timestamp": "2010-08-06T14:54:51",
"content": "Omg, legos…. Kill it with fire…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166179",
"author": "Joe",
"timestamp": "2010-08-06T15:04:30",
"content": "I interested in the enclosures around the bus pirate and logic sniffer? any info on those?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166181",
"author": "Osgeld",
"timestamp": "2010-08-06T15:14:35",
"content": "looks like a routed out block of plastic, and very handy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166184",
"author": "Brennan",
"timestamp": "2010-08-06T15:16:57",
"content": "I agree, those cases are awesome! Is that custom made or can you buy those somewhere?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166188",
"author": "syale",
"timestamp": "2010-08-06T15:38:19",
"content": "Site is down:http://www.stewartallen.org",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166205",
"author": "Mike Szczys",
"timestamp": "2010-08-06T16:41:23",
"content": "About the cases,we’ve covered those before.Yes they’re custom made and yes you can buy them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166206",
"author": "Stewart",
"timestamp": "2010-08-06T17:00:00",
"content": "Sorry guys about the site, working on it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166208",
"author": "Stewart",
"timestamp": "2010-08-06T17:04:53",
"content": "Right, should be back up, I’ll keep an eye on it.@Osgeld, @Brennan and @Joe. The cases are custom made, I’ve got a post on them (Actually my first project featured on HaD)http://stewurl.com/19",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166227",
"author": "Brennan",
"timestamp": "2010-08-06T17:55:00",
"content": "Cool, I *knew* I saw those cases somewhere before, but I thought it was like Dangerous Prototypes or Seeed Studio or something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166307",
"author": "Urza9814",
"timestamp": "2010-08-06T22:19:29",
"content": "Nothing new at all here. I remember doing this back in middle school with the original Mindstorms (around 2000, maybe earlier). There were even businesses dedicated to this – they had some great sensors, like the first sonic range sensor (_years_ before LEGO thought of doing one, and they had two, one for short range, one for long), the first color sensor (I still don’t think LEGO makes these), etc.Didn’t use I2C though – there was no such thing. You’d just program them as though they were a light sensor usually. Measured resistance and gave you a value between 0 and 100, though I think you could get more accurate than that if you weren’t using the official software.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166641",
"author": "criznach",
"timestamp": "2010-08-08T00:18:40",
"content": "Love that dragon case. Gonna have to visit the local cutting shop…",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.338255
|
||
https://hackaday.com/2010/08/05/bluetooth-multimedia-remote/
|
Bluetooth Multimedia Remote
|
Mike Szczys
|
[
"digital audio hacks"
] |
[
"bluetooth",
"multimedia",
"remote",
"skype"
] |
[Mathieu] spent three months developing this
multimedia remote control
. It connects to a PC via USB or Bluetooth and communicates with Winamp to pull down track information for display on a Nokia LCD screen. It can also be used as a wireless headset via the two on-board jacks. [Mettieu] thinks it’s just a small hop away from working as a Skype client if you take the time to write a plugin for that API.
| 17
| 17
|
[
{
"comment_id": "165969",
"author": "zool",
"timestamp": "2010-08-05T22:15:15",
"content": "not bad, yeah could be used for other stuffi always thought winamp should have made their own mp3 player (i mean like an ipod/zune/etc..)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165972",
"author": "concino",
"timestamp": "2010-08-05T22:49:37",
"content": "Winamp hasWWWWinampapplication that allows you to control winamp on any browser. So all you need is a web enabled phone and you are in business.if you are using iTunes, you can use Remote application to control your music from your iPhone.I like the fact that you can attach your headphones to it, but I rather use my phone instead of carrying purpose build tool with me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165985",
"author": "beernutz",
"timestamp": "2010-08-05T23:36:54",
"content": "That is VERY cool. Is it really 2 years old?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166024",
"author": "Osgeld",
"timestamp": "2010-08-06T02:45:29",
"content": "looks like shit",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166035",
"author": "Hitek146",
"timestamp": "2010-08-06T03:36:40",
"content": "Yea, doesn’t look that refined, visually speaking, but, man, this is a great idea(and awesome post)!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166043",
"author": "nnx",
"timestamp": "2010-08-06T04:10:25",
"content": "Why is it that so many awesome hacks look like crap?Its not just this one, the plasticbottle recycling looked crappy too.Is it too much to put a milling bit in your drill press and mill out the casing properly?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166050",
"author": "jones",
"timestamp": "2010-08-06T04:39:29",
"content": "I think it looks great, better than what I could do. Wonder if it works in MPD also?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166109",
"author": "mowcius",
"timestamp": "2010-08-06T08:29:45",
"content": "“looks like shit”Oh osgeld, you are so discrete :pThe case could so with a major revamp but the idea and interface looks great. Must have been a lot of work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166110",
"author": "limpkin",
"timestamp": "2010-08-06T08:32:06",
"content": "Hey Guys,Unfortunately i had only one week to make the casing, that’s why it was not really well finished… and yes it is 2 years old!Thanks for your comments anyway :)Have a look at my blog, and there are plenty of other projects that might interest you",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166112",
"author": "lucky",
"timestamp": "2010-08-06T08:37:15",
"content": "only winamp and skype? Why not vlc? Why not firefox ? Why not youtube via a firefox plugin? A status indicator?(tempterature, battery) a mail notifier? in short, this could be a remote “status bar” of the computer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166117",
"author": "Anon",
"timestamp": "2010-08-06T09:03:37",
"content": "‘looks like shit’? Very useful comment Osgeld.Allow me to feed the future troll:This bluetooth remote looks way better than your Nes thing:http://hackaday.com/2010/06/30/nes-controller-to-usb-gamepad/Mathieu 1 – Osgeld 0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166134",
"author": "Kiddi",
"timestamp": "2010-08-06T10:18:18",
"content": "I like this build :) Well thought out and well executed (Tho the case does need work)…Osgeld : Deep, insightful, well thought out comments abound.nnx : Is someone forcing you to spend money on that? Who cares how it works as long as it works and the maker is happy with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166138",
"author": "magetoo",
"timestamp": "2010-08-06T10:30:42",
"content": "Yeah Osgeld, try to be more continuous next time.Cool project though, despite the poor choice of image to show it off. (I’d imagine he’s managed a better looking case by now.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166156",
"author": "JohnSmith",
"timestamp": "2010-08-06T13:23:55",
"content": "Say what you will about his case, that’s a nice, clean writeup. Wish all hackers took as much time detailing their designs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166157",
"author": "Osgeld",
"timestamp": "2010-08-06T13:32:40",
"content": "“Say what you will about his case”no dont do that, every asshat in the world will start jumping your case",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166328",
"author": "clinton",
"timestamp": "2010-08-07T00:07:25",
"content": "Great post and a solid project. It seems like it can have many uses, and Bluetooth is always better than that IR stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166560",
"author": "Anon",
"timestamp": "2010-08-07T17:54:02",
"content": "Osgeld, totally agree with you. A dog-ass ugly visual (for me at least) implies the quality of the rest of the guts. (i.e. coding practices, etc)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.570375
|
||
https://hackaday.com/2010/08/03/robot-boxing-with-wrist-watches/
|
Robot Boxing With Wrist Watches
|
Mike Szczys
|
[
"home entertainment hacks"
] |
[
"chronos",
"ez430",
"plastic",
"robots",
"servo",
"watch"
] |
The classic injection molded plastic Rock ‘Em Sock ‘Em Robots has been
upgraded to use motion control
. The project uses four
TI Chronos watches
, one on each wrist of both players. In the video after the break we get a good look at the guts of the base unit. We’re quite impressed with the quality craftsmanship that went into retrofitting the plastic bots with four servos each. The electronics include some bells and whistles such as an SD card that records scores and can replay a match via saved inputs. If you’ve got a couple of these watches on hand we’d love to see you port this project and
make it a Punchout controller
.
http://www.youtube.com/watch?v=WA5Bgmt-rL8
| 7
| 7
|
[
{
"comment_id": "165256",
"author": "svofski",
"timestamp": "2010-08-03T19:23:39",
"content": "tee-eye tee-eye tee-eye blah blah",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165262",
"author": "Anon",
"timestamp": "2010-08-03T19:33:02",
"content": "I just want to see a salt-shaker-shaking-salt-in-mouth simulation using wristwatches, that’d be awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165274",
"author": "Trey German",
"timestamp": "2010-08-03T20:12:39",
"content": "This project was part of a larger Co-op design competition. There are many more project to view and they are available at:http://processors.wiki.ti.com/index.php/Co-Op_Design_Challenge",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165336",
"author": "vonskippy",
"timestamp": "2010-08-03T23:36:59",
"content": "That’s almost as good as the holochess in Star Wars.Ok, no it’s not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165348",
"author": "zacdee316",
"timestamp": "2010-08-04T01:13:45",
"content": "They should have it set so when the head goes up the bots reset for the next round.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165373",
"author": "zool",
"timestamp": "2010-08-04T03:00:11",
"content": "head seems like it’s on a hair trigger and going up when it’s not supposed to (i know that’s just how the game is made but they probably could have devised a better point system)lol at aj from the launchpad vids",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165387",
"author": "soopergooman",
"timestamp": "2010-08-04T04:05:39",
"content": "Just COol Man~!!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.287504
|
||
https://hackaday.com/2010/08/03/driving-with-android/
|
Driving With Android
|
Mike Szczys
|
[
"Android Hacks",
"Tool Hacks"
] |
[
"bluetooth",
"gp-gc021",
"radio control",
"rc"
] |
[youtube=http://www.youtube.com/watch?v=tIx2ihZ7728]
[Elrik] converted an RC car so that
it can be controlled with an Android phone
. He wisely uses the accelerometer for steering with a button for forward and another for reverse. There’s even control for the headlights. The car itself has had a servo retrofit for steering but it’s the Bluetooth module that catches our eye. It’s a GP-GC021 which you can get your hands on for under $20. It has a serial UART for easy interface with a microcontroller at up to 9600 baud.
Now you can
convert over that larger vehicle
to use Bluetooth instead of WiFi, just don’t hurt yourself. And if you’re just starting out with writing Android apps, don’t miss our series:
Android Development 101
.
| 5
| 5
|
[
{
"comment_id": "165287",
"author": "cde",
"timestamp": "2010-08-03T20:48:22",
"content": "The android source is missing from the page.Nice to see this done, but would have been cheaper to get a car that already had direction control. Then the attiny could have controlled it with normal transisters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165319",
"author": "martinmunk",
"timestamp": "2010-08-03T22:38:37",
"content": "Nais! Reminds me of my final school project we did with a WM6 phone though:http://www.youtube.com/watch?v=GrAG-oLdhmo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165389",
"author": "Chris Moulder",
"timestamp": "2010-08-04T04:20:57",
"content": "You’ve been able to get those bluetooth modules cheaply for a while. Seedstudio has a good one (Master/Slave configurable) for 20ish. Ebay also has Slave only 9600 baud for ~12.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165441",
"author": "strider_mt2k",
"timestamp": "2010-08-04T08:15:24",
"content": "Yeah, don’t back your car up into the mains or anything. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "207289",
"author": "Gdogg",
"timestamp": "2010-11-03T20:08:44",
"content": "Awesome. Simple. I’m a fan.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.756094
|
||
https://hackaday.com/2010/08/03/reverse-engineering-apples-recharging-scheme/
|
Reverse Engineering Apple’s Recharging Scheme
|
Mike Szczys
|
[
"iphone hacks",
"ipod hacks"
] |
[
"apple",
"charger",
"ladyada",
"minty boost",
"usb",
"voltage divider"
] |
[vimeo=http://vimeo.com/13835359]
[Ladyada] has been hard at work
reverse engineering the charging method used by Apple
products. This saga takes us through the years as new devices were released and subsequently broke
Minty Boost’s
charging capabilities. It seems the data lines were gradually adopted as a means for iPhones and iPods to identify the charger that had been connected. By adding voltage dividers to the D+ and D- lines you can instruct the handheld to pull 1 Amp (with data voltages of 2.8v and 2.0v) for wall chargers or 0.5 Amps (2.0v on both data lines) for portable chargers. In the video above [Ladyada] removes the surface mount resistors from a commercial charger in order to measure the voltage divider and discover the secret.
| 52
| 49
|
[
{
"comment_id": "165197",
"author": "Darkrocker",
"timestamp": "2010-08-03T17:06:41",
"content": "Wow… now THIS is what hacking is all about. Uncovering apple’s dirty secrets so we wont be forced into buying more of their products :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165198",
"author": "xeracy",
"timestamp": "2010-08-03T17:07:19",
"content": "Wow, ladyada, you are dedicated and your efforts are greatly appreciated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165199",
"author": "afasgfa",
"timestamp": "2010-08-03T17:09:10",
"content": "cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165200",
"author": "starlino",
"timestamp": "2010-08-03T17:13:08",
"content": "Same technique is used in palm adapters for years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165202",
"author": "Dre",
"timestamp": "2010-08-03T17:18:17",
"content": "Ladyada and Jeri Ellsworth are my favorite female geek heroines…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165203",
"author": "Osgeld",
"timestamp": "2010-08-03T17:18:31",
"content": "OR and this is just a wild idea, you can tell apple where to shove their “we need to break it every generation so they have to buy new crap” attitude that has loomed over the company since the // series and not buy their devicejust a thought",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165205",
"author": "Erik Johnson",
"timestamp": "2010-08-03T17:23:14",
"content": "I thought it was well known for at least a couple years that you need to fool iProducts into charging by placing resistors across the data lines to power?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165208",
"author": "okay",
"timestamp": "2010-08-03T17:30:17",
"content": "Why couldn’t she measure the voltage over the data lines and calculate the correct resistor value based of that (since she would then know the voltage and amps)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165209",
"author": "Ryan",
"timestamp": "2010-08-03T17:39:59",
"content": "I thought that USB could provide 100mA at 5V, or 500mW, but the site states USB can provide 500mA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165212",
"author": "Ryan",
"timestamp": "2010-08-03T17:43:42",
"content": "My mistake. 100mA is 1 unit load, but a USB port can provide up to 5 unit loads.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165214",
"author": "Marty Chine-Ballas",
"timestamp": "2010-08-03T17:45:06",
"content": "All apple devices use a voltage devider on the D+ and D- lines to identify the maximum the charger can support and stay with in voltage limits (4.75V to 5.25V)Vusb Vusb| || |/ /\\ R1 \\ R3/ /| || ||— D+ |— D-| || |/ /\\ R2 \\ R4/ /| || |GND GNDFor 2.0A charging:R1: 43.2KohmR2: 49.9KohmR3: 75.0KohmR4: 49.9KohmFor 1.0A charging:R1: 75.0KohmR2: 49.9KohmR3: 43.2KohmR4: 49.9KohmFor 0.5A charging:R1: 75.0KohmR2: 49.9KohmR3: 75.0KohmR4: 49.9Kohm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165217",
"author": "Marty Chine-Ballas",
"timestamp": "2010-08-03T17:46:57",
"content": "All apple devices use a voltage devider on the D+ and D- lines to identify the maximum the charger can support and stay with in voltage limits (4.75V to 5.25V)Vusb||/\\ R1/|||— D+||/\\ R2/||GNDVusb||/\\ R1/|||— D+||/\\ R2/||GNDFor 2.0A charging:R1: 43.2KohmR2: 49.9KohmR3: 75.0KohmR4: 49.9KohmFor 1.0A charging:R1: 75.0KohmR2: 49.9KohmR3: 43.2KohmR4: 49.9KohmFor 0.5A charging:R1: 75.0KohmR2: 49.9KohmR3: 75.0KohmR4: 49.9Kohm",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "457542",
"author": "jonathan",
"timestamp": "2011-09-17T13:06:37",
"content": "Is anyone aware of a <500mA configuration? Perhaps ~200mA?",
"parent_id": "165217",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165218",
"author": "karateboy02",
"timestamp": "2010-08-03T17:50:53",
"content": "Sweet hack with good uses for the every day user.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165220",
"author": "Concino",
"timestamp": "2010-08-03T17:54:25",
"content": "@okay:Because there are no voltage on the Data lines by default. That’s the reason you need to create the voltage divider based on the 5V leg of the USB and provide the voltage to D+/-.But you can achieve that with a lot of different combination of voltage dividers. For example if you want to draw 5mA from the 5V line you can do that by using 400ohm-400ohm-200ohm, but if you only want to draw 100microAmp the resistor values becomes 20k – 20k – 10k etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165221",
"author": "Concino",
"timestamp": "2010-08-03T17:54:51",
"content": "I just love ladyada. And Adafruit has an awesome customer service too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165225",
"author": "cotton509",
"timestamp": "2010-08-03T17:56:25",
"content": "So a resister on 5v to d- and d+? am i right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165227",
"author": "Marty Chine-Ballas",
"timestamp": "2010-08-03T18:01:21",
"content": "All apple devices use a voltage devider on the D+ and D- lines to identify the maximum the charger can support and stay with in voltage limits (4.75V to 5.25V)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165231",
"author": "Oren Beck",
"timestamp": "2010-08-03T18:05:58",
"content": "At one time in the history of consumer products there was an attempt to define standards in very simple requirements. If the plug fits – it works. If it will not work- that plug shall not be capable of mating into a non-compatible socket. Look at the DIN plug concept for home audio as one early example.Yes, there are legit applications for “permissible” deviations from or enhancements to some aspect of a standard. And there are equally valid reasons for just choosing not to violate standards in even the most trivial detail.The part where breaking compliance with standards becomes a Hard Epic Fail is if a device becomes so crippled by non-compliance that customers just say no.Sadly, some companies and devices are targeting a customer base that seems to never say no.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165232",
"author": "turn.self.off",
"timestamp": "2010-08-03T18:10:29",
"content": "i am guessing this is not the same as the usb battery charging spec:https://secure.wikimedia.org/wikipedia/en/wiki/Universal_Serial_Bus#Power",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165242",
"author": "Daley",
"timestamp": "2010-08-03T18:57:24",
"content": "ladyada got slashdotted:http://apple.slashdot.org/story/10/08/03/1743240/Hardware-Hackers-Reveal-Apples-Charger-Secrets",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165244",
"author": "andrew",
"timestamp": "2010-08-03T19:02:28",
"content": "So, she found two resistor values that result in two different amounts of current drawn. Marty seems to have identified a third. Is it possible that the i-devices are able to vary their current draw continuously given arbitrary voltages on d1 and d2 (within a range of course)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165253",
"author": "Haku",
"timestamp": "2010-08-03T19:21:24",
"content": "Perfect timing, yesterday a friend was complaining about their iPhone not charging then the PC was in standby mode but the USB ports had power, and that it would only charge when the PC was fully up & running (and needlessly wasting electricity just to charge a fricken phone)I shall have to put this information to some good use very soon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165273",
"author": "Phate",
"timestamp": "2010-08-03T20:06:22",
"content": "Yeeees. I was wondering why my hack-job charger wouldn’t work with my iTouch. I’m definitely going to give this a shot in the near future. I hate having to turn on my laptop whenever I want to charge my iPod, and I refuse to pay a ridiculous sum for a wall charger when I could build one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165304",
"author": "maroc",
"timestamp": "2010-08-03T21:55:23",
"content": "its funny I just got a usb solar charger for my touch and it wasn’t (and still isn’t)working but I had theorized that a charge was being sent down the data lines time to do some designing wonder if I can modify a usb cable",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165305",
"author": "Hitek146",
"timestamp": "2010-08-03T22:02:56",
"content": "I don’t know why this is being lauded as revolutionary. This info has been common internet knowledge for a very long time. I modified a D-Link 5V 2A charger to charge my iPhone in just this manner over a year ago…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165320",
"author": "Cynyr",
"timestamp": "2010-08-03T22:44:34",
"content": "@marocJust add an “extension” cable/board with the modifications in between. One socket and one plug, and then plug the unmodified solar panel into one end, and the unmodified itouch cable in the other.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165322",
"author": "magetoo",
"timestamp": "2010-08-03T22:55:33",
"content": "Yeah, I’m disappointed too. We did the voltage divider hack to charge our 3G iPhones back in the 80’s from the USB ports of our C64s and this is being posted as new?Seriously, this is a hack, and useful and well documented one. Exactly the kind of thing that Hackaday should be posting even if it doesn’t live up to some people’s 0-day standards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165326",
"author": "maroc",
"timestamp": "2010-08-03T23:06:16",
"content": "@cynyr that’s what I was thinking but I’m A little unsure about how to wire it up as of right now plus I don’t have an extension cable right now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165327",
"author": "magetoo",
"timestamp": "2010-08-03T23:09:45",
"content": "andrew:Continuously variable charging rate would be a cool trick, but I guess probably way too “analog” for anything built today. :-)Probably just a handful of useful ones to fit some common scenarios where you’d might want to charge. (wall socket, USB port, emergency charger, …)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165328",
"author": "error404",
"timestamp": "2010-08-03T23:11:35",
"content": "@turn.self.off:Of course not, it’s Apple. Every other device needs shorted data lines, and theirs needs some weird voltage divider. Awesome, now you have to carry two ‘standard’ USB chargers around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165329",
"author": "magetoo",
"timestamp": "2010-08-03T23:23:19",
"content": "error404:In that Slashdot thread, “marcansoft” posted that shorting the data lines works just fine with an iPhone 3G.http://apple.slashdot.org/comments.pl?sid=1742078&cid=33128338So I’m guessing the specific voltages are only for the current-limited modes?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165339",
"author": "Osgeld",
"timestamp": "2010-08-03T23:49:14",
"content": "Jul 28, 2008 06:37 AMhttp://gizmodo.com/5029844/simple-hack-turns-usb-charger-units-into-iphone-chargersJust sayin …to those acting surprised",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165351",
"author": "therian",
"timestamp": "2010-08-04T01:29:38",
"content": "Imagine if car factories used all kinds of custom screws and bolts, they actually did that 60 years ago. Do we actually need another government involvement to stop Steve greed?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165352",
"author": "Hitek146",
"timestamp": "2010-08-04T01:31:50",
"content": "@magetoo,I don’t know if you were referring to my post or not, but I never said that this did not belong here. On the contrary; I think this is exactly the sort of hack that belongs here, and if it hasn’t been posted here before, it is a very welcome addition(by me, at least). I was(amongst others) wondering why this was being touted as being new or an amazing discovery, when it’s not, that’s all. I mean, before one tells someone else that their “efforts are greatly appreciated” for doing some great new research, they should, at least, check first to make sure it was actually that person’s original research(IMHO)…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165409",
"author": "D_",
"timestamp": "2010-08-04T05:49:36",
"content": "May be handy to know someday. Thank you Ladyada, and HaD. I’m no fan of Apple, but… While Apple makes use of planned/perceived obsolescence, it certainly didn’t ingrain it into the American physcii. Kind of silly to go there as one comment did“If the plug fits – it works”-Oren. In event a 3rd party USB charging device doesn’t work with Apple products that’s the fault of the manufacturer of the 3rd charger, not Apple. Apple is using the data pins to retrieve data from the charging source. Evidently the product Ladyada reverse engineered, reverse engineered apple products or where aware of the battery charging specification.LOL HaD has new meet a new lrvel of excellance no,eh? HaD is not supposed to research to insure what they post in truly new, and hasn’t existed elsewhere. Good God What some people expect for free. Requirements to be a HaD reporter 10′ tall, and skin thick enough to stop 50 caliber slugs.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1260837",
"author": "anon",
"timestamp": "2014-03-13T22:23:39",
"content": ">Good God What some people expect for free.A bit crotchety, are ya’? Everything should be free! Everything!",
"parent_id": "165409",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165447",
"author": "RBMK",
"timestamp": "2010-08-04T09:12:28",
"content": "When they switch from resistors to 3-pin ROM chips THAT will be challenge! Like fu* hell, i mean DELL…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165450",
"author": "magetoo",
"timestamp": "2010-08-04T09:57:47",
"content": "Hitek146:No, I wasn’t responding to you.(But to respond to your point: neither HaD or ladyada really claimed it was a new idea either, at least not in the article that’s linked, so I don’t see where the “touted as new” comes from.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165463",
"author": "Filippo Castelli",
"timestamp": "2010-08-04T12:35:34",
"content": "very nice post, complete and simple to understand even for foreign people like me…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165467",
"author": "ejonesss",
"timestamp": "2010-08-04T13:20:10",
"content": "if this is a sick joke way for apple to make more money i would rather pay an extra $ 5 or $10 for an apple product or even start paying for software upgrades.ok when itunes 10 comes out that would be $5.same goes for firmware upgrades for the ipod and iphones.i can understand a little better if apple wants to eliminate or reduce the risk of fires due to the battery being charged by un official chargers.but come on!!!!! all the batteries have the protection board on the battery.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165488",
"author": "osgeld",
"timestamp": "2010-08-04T15:43:38",
"content": "“”i can understand a little better if apple wants to eliminate or reduce the risk of fires due to the battery being charged by un official chargers.””irronicly Apple has had some of the worst luck with their batteries catching fire",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165585",
"author": "Hitek146",
"timestamp": "2010-08-04T19:47:12",
"content": "@magetoo,Sorry, my bad. I should not have been so vague. I wasn’t referring to Hackaday or Ladyada, I was referring to the comments above…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165990",
"author": "JeeCee",
"timestamp": "2010-08-06T00:02:55",
"content": "Does RIM uses the same technique for their BlackBerry’s?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167485",
"author": "Chris",
"timestamp": "2010-08-11T05:24:43",
"content": "THis is great, it will probably decrease the rate of the battery life (cycles) but still it would be nice to be able to quickly charge an iPhone.I now need to somehow integrate my universal dock (and remote) into a tomtom compatible in car charger.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "209843",
"author": "niran",
"timestamp": "2010-11-09T07:23:24",
"content": "very impressive – good finding ,i thote the internal resistance of the power source determine the current. any idea why apple doing this way?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "235020",
"author": "Mitchell",
"timestamp": "2010-12-02T21:29:14",
"content": "how do they come up with 2A, 1.5A and 0.5A with those resistors value",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1699728",
"author": "Brack McGack",
"timestamp": "2014-08-09T02:08:50",
"content": "In this case, the resistor values don’t affect the charging current directly, but instead, the resistors supply a reference voltage to the data pins. The iPhone sees those voltages, and then decides, “Okay, based on those voltages, I’m going to draw such-and-such a current.” The actual current is supplied via pins 1 and 4 (power and ground), at 5 volts DC… No current is actually supplied over the data pins, or if so it’s negligible.",
"parent_id": "235020",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "368471",
"author": "k0palhawk",
"timestamp": "2011-03-27T06:58:57",
"content": "excellent presentation!! thank you. it was clear, smooth and relevant",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398570",
"author": "Paddy",
"timestamp": "2011-05-27T16:14:06",
"content": "Does anyone know if it would be possible to install these resistors on the data lines of a powered USB hub (Belkin (Belkin 4 port # F5U404) to trick the IPhone into charging when not connected to the computer? Could this work at all or would it completely inhibit the hubs capability to connect to a computer?Any help hacking Apples fascist proprietary schemes would be greatly appreciated.Cheers",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "424255",
"author": "michael",
"timestamp": "2011-07-28T05:35:08",
"content": "Working at a local electronics store (hardcore, components and the like, none of that plasma tv crap), this hack is brilliant insight because I often got people coming in asking questions regarding this. I only ever had sneaking suspicions about data line pullup/down resistors, but its good to see that someone has taken the time to take it all apart properly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1322876",
"author": "da",
"timestamp": "2014-04-02T21:17:26",
"content": "I did seem to notice that even with D+/- floating, the phone draws about 75mA from a power supply. This is a laboratory supply, with a current readout. So, even when the phone reports the “accessory not supported” error, does it continue to charge? Of course, it will take forever at that rate.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.837478
|
||
https://hackaday.com/2010/08/03/diy-guided-missile-err-model-rocket/
|
DIY Guided Missile (…err Model Rocket)
|
Jake W
|
[
"Arduino Hacks",
"Toy Hacks"
] |
[
"arduino",
"guided",
"missile",
"pro mini",
"rocket"
] |
Hackers [Navic] and [K.o.D] have fitted an Arduino Pro Mini and an array of components into an off the shelf rocketry kit to
create a guided model rocket
, taking the whole idea of
Arduino-based space technology
to another level
The Arduino reads signals from internally mounted accelerometers, and adjusts balsa fins (via 4 micro servos) to correct the rocket’s flight path. Due to the nature of model rocketry, the active guidance is limited to the 3 seconds that the rocket is traveling upwards. A valiant effort nevertheless. Videos of the rocket’s maiden voyage, and a system check after the break.
[youtube=http://www.youtube.com/watch?v=sKiLbdQ7d1c]
[youtube=http://www.youtube.com/watch?v=swjb5wQ1JXU]
| 116
| 50
|
[
{
"comment_id": "165130",
"author": "neorazz",
"timestamp": "2010-08-03T13:46:44",
"content": "If you’ve got an onboard controler why not use the accelerometer data to time the firing of the 2nd and 3rd…etc stages for longer sustainded flight on low end rockets",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6199107",
"author": "Albert",
"timestamp": "2019-11-30T04:01:33",
"content": "You can stack motors ontop of each other to create multiple stages. I think this is more of a proof of concept. Having a rocket with a failing guidance system and several stages is a bad combo",
"parent_id": "165130",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165131",
"author": "ke7eha",
"timestamp": "2010-08-03T13:50:10",
"content": "ummm.. an IMU for a missile should have 6 degrees of freedom. I’m only seeing 3 (tri-axis accelerometer). You also only need 2 servos to control it, one for up/down and one for left/right.It this roll stabilized? If not, there’s a really slick way that they stabilize some missiles called a rolleron.Pretty cool though.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1579435",
"author": "shf",
"timestamp": "2014-06-18T20:40:15",
"content": "I’m on the rocket team at my school and last year we designed rollerons into our fins to try and quantify their benefits. Unfortunately, you have to be going pretty darn fast before you see any sort of added stability — speeds that most Estes engines can’t propel a model to. If you scale up your rocket and get to a few hundred miles per hour, the rollerons can come in handy.",
"parent_id": "165131",
"depth": 2,
"replies": [
{
"comment_id": "1722440",
"author": "Jaume",
"timestamp": "2014-08-16T23:00:36",
"content": "model rockets do travel at several 100 mph.a basic alpha III can do 200 something mph.",
"parent_id": "1579435",
"depth": 3,
"replies": [
{
"comment_id": "1722533",
"author": "Brian Benchoff",
"timestamp": "2014-08-16T23:55:02",
"content": "If you do it right, you can break Mach with the low-end Estes engines.I do recall having several Estes Wizards disintegrate on me.",
"parent_id": "1722440",
"depth": 4,
"replies": []
}
]
},
{
"comment_id": "6777219",
"author": "Edwin Jackson",
"timestamp": "2024-07-18T11:26:21",
"content": "You need to spin up the rollerons with compressed air just before launch.",
"parent_id": "1579435",
"depth": 3,
"replies": []
}
]
},
{
"comment_id": "3337207",
"author": "xplane2me",
"timestamp": "2016-12-28T16:59:30",
"content": "Rollerons are generally used for air-launched missiles. In this case, being in the moving airstream pre-spins the rollerons and you get stabilization right from launch. I suspect it would not work well with your ground-launched rocket because it will take extra time for the rollerons to spinup.",
"parent_id": "165131",
"depth": 2,
"replies": [
{
"comment_id": "4277823",
"author": "Anti Matter",
"timestamp": "2017-12-28T21:46:39",
"content": "Thrust vectoring is your only hope…",
"parent_id": "3337207",
"depth": 3,
"replies": []
},
{
"comment_id": "6018219",
"author": "Mean old veteran",
"timestamp": "2019-03-26T12:11:40",
"content": "Look up mim 72A and mim72cThey go like Hell after launch and are stabilized by rollerons and are ground launched. This is an old Army Air DefenseMissile that is a modified Sidewinder Air to Air Missile.",
"parent_id": "3337207",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "165132",
"author": "chrelad",
"timestamp": "2010-08-03T13:50:14",
"content": "Cool! I wonder if there is an engine that lasts longer. Flight time will definitely be restricted with the normal class A/B/C engines unfortunately. I see the potential though and this is a great proof of concept :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165134",
"author": "leafy",
"timestamp": "2010-08-03T13:54:12",
"content": "Don’t bother watching the second video, its merely some misaligned fins wiggling about for 1:17! :(waste of time, all it served to show was how low the build quality was. I’m amazed it didn’t just veer off wildly.Don’t get me wrong, I like the concept but I think a test with all fins set to straight would’ve been interesting just to prove that they were straight before attempting any active control.Also are 4 servos really necessary? Surely two would do if you didn’t mind a little roll?I wonder if they bothered to program the servo response differently considering 2 of them pivot in a drastically different way to the other pair of control surfaces, it will have a big effect.Micro hobby servo response times might also be an issue at this sort of speed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165136",
"author": "leafy",
"timestamp": "2010-08-03T13:58:22",
"content": "rolleron’s look like a such a neat solution, can’t believe I’ve never heard of them before, thanks ke7eha.Glad you come to similar conclusions about the number of servos",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165137",
"author": "Iv",
"timestamp": "2010-08-03T13:59:41",
"content": "“taking the whole idea of Arduino-based space technology to another level”Er… no. Programmable chips in amateur rockets have existed since we have, well… programmable chips and amateur rockets. The “outer space” is commonly said to begin at a 100km height. These rockets don’t even go at 1 km.I am no arduino hater, but this is just similar to literally thousands of projects who just use similar or more poxerful programmable chips in rockets.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165138",
"author": "Queeg",
"timestamp": "2010-08-03T14:03:57",
"content": "Two of the fins are hinged so far aft that I’d be concerned that the airloads would overpower the servo and twist them around, or at least make them difficult to control. Repositioning two servos and using pushrods might be an option.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165139",
"author": "Circuitmage",
"timestamp": "2010-08-03T14:06:25",
"content": "Step 1: Put your rocket on a balloon.Step 2: Put your balloon up to the edge of space.Step 3: Launch multistage rocket with camera and GPS.ORStep 4: Launch Multistate rocket with video and transmitter toward moon trajectory for weeks of video phun.Ahhh…soo close….and yet so far…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "730111",
"author": "John",
"timestamp": "2012-08-10T17:08:39",
"content": "I wonder if anyone has done this before",
"parent_id": "165139",
"depth": 2,
"replies": [
{
"comment_id": "2348413",
"author": "sesen",
"timestamp": "2015-01-13T19:49:01",
"content": "Yes, and it is called Rockoon ;)",
"parent_id": "730111",
"depth": 3,
"replies": []
}
]
},
{
"comment_id": "968494",
"author": "DaLolzor",
"timestamp": "2013-03-02T04:03:32",
"content": "I don’t think the Delta-V cuts it. You need to accelerate to about 9km/s to escape earth; dosen’t matter how far you are because gravity has infinite range. Newton, homie",
"parent_id": "165139",
"depth": 2,
"replies": [
{
"comment_id": "2859574",
"author": "KimJongSpoon",
"timestamp": "2015-12-29T20:07:49",
"content": "Even if you launched from 200km (balloons can’t dream of getting that high), you need to be traveling at 7.4 km/sec to be in orbit. This thing might get 200 m/sec, plus the earth’s rotation means about 500 m/sec. Only 6.9 km/sec to go! My point is you need a wayyyyyy bigger rocket to even dream of getting to orbit.",
"parent_id": "968494",
"depth": 3,
"replies": []
},
{
"comment_id": "3343289",
"author": "thatDude",
"timestamp": "2016-12-31T04:32:49",
"content": "try again, of course range matters. force is proporational to Mass1, Mass2 and inverse proportional to separation^2",
"parent_id": "968494",
"depth": 3,
"replies": []
},
{
"comment_id": "4425516",
"author": "raul",
"timestamp": "2018-03-17T02:49:01",
"content": "Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.",
"parent_id": "968494",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "165146",
"author": "Patrick",
"timestamp": "2010-08-03T14:25:45",
"content": "Very Cool.But, in this post-9/11 environment a project like this one can get you in big trouble. Especially, if you fly it any where near a government building.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "957139",
"author": "sa_penguin",
"timestamp": "2013-02-09T07:43:38",
"content": "Rouketopolemos!Distance: about 400 metres.Target: a church bell, in a bell tower.see:http://en.wikipedia.org/wiki/Rouketopolemoshttp://www.howtospotapsychopath.com/2013/02/07/what-i-discovered-today/#comments",
"parent_id": "165146",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165148",
"author": "Hacksaw",
"timestamp": "2010-08-03T14:31:55",
"content": "Yeah buy your arduino now before Homeland Security finds this project.Guided missiles (no matter how inaccurate or short flight) will not be allowed by the powers that be. I know many here fancy themselves rebels or out of reach/under the radar/invisible to the men in black suburbans but you WILL change your tune when the roll up at your house…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165151",
"author": "Colecoman1982",
"timestamp": "2010-08-03T14:41:24",
"content": "To be honest, I wouldn’t be surprised if installing a guidance system (regardless of effectiveness) was a violation of FAA guidelines even before 9/11.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165155",
"author": "Colecoman1982",
"timestamp": "2010-08-03T14:55:18",
"content": "@Patrick: Stuff it. Take your political raving elsewhere, we have all the crazy we need here already. This is hack-a-day, not the comment section on a Brietbart story. Assuming that it even is an FAA violation, it would have been FAA regs written by the previous administration (or, as I suggested, before).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165156",
"author": "Paul",
"timestamp": "2010-08-03T14:58:03",
"content": "I agree with the previous comments regarding legality of this hack. I’ve certainly looked into making guided model rockets (I’m a UAV engineer), but without a special license, it’s illegal pretty much everywhere. Curiously, though, if you use a propeller instead of a rocket motor, it becomes a model aircraft and is governed by much more forgiving rules. Remember kids: save the rocket motor for the terminal kill-vehicle! :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165157",
"author": "Colecoman1982",
"timestamp": "2010-08-03T15:00:48",
"content": "Back on topic: I wanted to congratulate the guys working on this. It looks like an awesome project. I agree with the above poster that suggested this might make a cool Rockoon (balloon launched rocket). Though, if you’re going to do that then you might want to think about ways to vector the thrust instead of turning fins. At the altitudes those weather balloons go to I doubt there would be enough atmosphere for the fins to work.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1160785",
"author": "clayton isherwood",
"timestamp": "2014-01-11T06:38:47",
"content": "Canfield Joint?",
"parent_id": "165157",
"depth": 2,
"replies": [
{
"comment_id": "6161542",
"author": "Nate",
"timestamp": "2019-07-03T20:04:28",
"content": "Ha, I was in doc canfield’s class just after he invented that",
"parent_id": "1160785",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "165160",
"author": "DerAxeman",
"timestamp": "2010-08-03T15:19:05",
"content": "Congratulations!You either have a federal contract, a federal permit, or a federal warrant.Any rocket no matter what the size that has a guidance system is classified as a missile and thus a destructive device. Its a law that has been on the books since the sixties.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "165163",
"author": "Caleb Kraft",
"timestamp": "2010-08-03T15:23:14",
"content": "@all,Stay on topic, no personal bashing.",
"parent_id": "165160",
"depth": 2,
"replies": []
},
{
"comment_id": "786688",
"author": "Thanatox",
"timestamp": "2012-09-17T02:10:18",
"content": "[Citation Needed]",
"parent_id": "165160",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165164",
"author": "Manonfire",
"timestamp": "2010-08-03T15:24:02",
"content": "a guidance system is not against FAA rules, and as long as the rocket doesn’t go higher than a certain altitude, it doesn’t need to have a flight plan filed.the NAR doesn’t seem to have any rules against guidance systems either.as long as you’re not guiding it toward a target, (thus making it a destructive device, and under the BATF) you should be fine,",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165165",
"author": "Matt Joyce",
"timestamp": "2010-08-03T15:24:16",
"content": "I agree with the sentiments regarding the missile vs rocket thing. Adding guidance to a model rocket without authorization is fiercely illegal. You should not post this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165167",
"author": "Patrick",
"timestamp": "2010-08-03T15:33:49",
"content": "Liberal Hypocrites !!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165168",
"author": "andrew",
"timestamp": "2010-08-03T15:39:41",
"content": "This isn’t a guidance system. It performs no navigation. Rather, it appears to perform closed-loop maneuvers using feedback from a 2-axis accelerometer. I can a few raised eyebrows given their choice of maneuver (transition from vertical to horizontal flight) but, it still wouldn’t call it a guidance system.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165170",
"author": "Patrick",
"timestamp": "2010-08-03T15:42:26",
"content": "I am no fan of Bush either.But, I’ve seen anti-Bush comments remain on this web site, despite the fact that they were “Off topic”.However, anti-Obama comments are imeadiatley removed.Why is there selective inforcement?Clearly the moderator is “in love” with Obama.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1722554",
"author": "Brian Benchoff",
"timestamp": "2014-08-17T00:03:08",
"content": "Yeah, that’s completely untrue. I should know, because I moderate the comments. I just checked the trash, and I can’t find anything related to what you’re asserting. Present some evidence or shut up.BTW, several people reported comments from your IP. Notice how they’re still up.",
"parent_id": "165170",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165172",
"author": "pookey",
"timestamp": "2010-08-03T15:48:51",
"content": "I think an interesting application of guidance would be in the *return* of model rockets. I remember launching a few 3-stage Estes rockets when I was a kid, and in every instance, we never got the top stage back. It went so high that the winds caught it and carried it off.A GPS guided and servo-steered parachute or parasail, however, could assure that that the payload stage comes back and lands near where it was launched.The question is whether or not this would qualify as “targeting” and whether or not, according to the accounts of some here, this would render the system a weapon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165175",
"author": "Mitchel Humpherys",
"timestamp": "2010-08-03T15:51:55",
"content": "Looks fun. Nice job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165176",
"author": "Quintin",
"timestamp": "2010-08-03T15:55:36",
"content": "Cool project, but how is this ‘guided’?They have used some code and an accelerometer to get some basic attitude control.If it could follow a predefined path, then I’d call it guided.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165180",
"author": "steeve",
"timestamp": "2010-08-03T16:03:54",
"content": "Really awesome project. It only looks like the steering is not very accurate or fast. The flight looks just like a regular model rocket flight. I see no influence of the steering, at least no good one…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165181",
"author": "steeve",
"timestamp": "2010-08-03T16:05:24",
"content": "Oh yeah, I see whats the problem. The accelerometer doesn’t work without a proper gyro, therefore it only reacts correctly to slow changes. The quick changes just produce overreactions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165191",
"author": "fartface",
"timestamp": "2010-08-03T16:39:31",
"content": "Great start, I love this kind of stuff… Here’s my efforts..you need to GEAR DOWN hobby servos. 4:1 or more you only need 3-6 degrees of turning and if you cand gear them down so you get 50% servo turn = the full 3 degrees then you are golden.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165193",
"author": "Anon",
"timestamp": "2010-08-03T16:42:01",
"content": "How bout we change the hate to something else, like the ARDUINO! That shit is still on the board!You don’t have to be a ROCKET scientist to take it off.BTW, went to Makerfaire saw a bunch of Arduinos and wanted to die. Some Makers didn’t even know the name of the chip! I almost shit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165195",
"author": "James",
"timestamp": "2010-08-03T17:04:50",
"content": "I like the rhythm the fins give off in the second video. kinda catchy.Cool concept tho, I’v always wanted to build a miniature space shuttle modle, but never had the funding.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165216",
"author": "Dave Eaton",
"timestamp": "2010-08-03T17:45:56",
"content": "“I’m amazed it didn’t just veer off wildly.”This contradicts your prior sentence- it was not a complete waste of time. It did something interesting, and maybe of dubious legality (but gee whiz, give it a rest. Unless you are a federal agent charged with enforcing the rules, MYOFB.) There was some loose shit involved, but they didn’t make any bones about that, either.It was cool, and did something unexpected; as far as I am concerned, this makes it a win, despite being a bit lopsided, with an somewhat inadequate control system. You need 6 DOF, but you can do some stuff with 3 DOF.The whole point of projects like arduino, or wiring, is to be like a nail- a tool to hold stuff together. It is a tribute to the Arduino effort that they DON’T have to know what the micro is, Anon. It is a tool to do stuff, not a nerd badge of courage and righteousness. You don’t like them? Don’t use them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165219",
"author": "asheets",
"timestamp": "2010-08-03T17:51:27",
"content": "Why does the article say it is only “guided” during the powered phase? Most of your course correction will come during the coast phase, up until you deploy the recovery systems (and even then, some recovery systems will benefit from guidance as well).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165222",
"author": "asheets",
"timestamp": "2010-08-03T17:55:11",
"content": "Watching the videos, either CG is way off or this was an epic fail. The rocket took off sideways halfway through the powered phase.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165228",
"author": "Colecago",
"timestamp": "2010-08-03T18:03:44",
"content": "@asheetsThat was the point, they directed it from vertical travel to horizontal and stabilized it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165233",
"author": "Colecoman1982",
"timestamp": "2010-08-03T18:18:26",
"content": "@Dave Eaton: I agree with you about the Arduino, but I don’t think I’ve seen anything here to suggest that anyone is mentioning the possible illegality of a guided model rocket as a way to brow-beat the project makers. Personally, I brought it up because I’m not 100% sure about the status myself and felt that it’s, directly, related to the project. Besides myself, either this project’s creators and/or others looking to replicate a similar project might want to know that they are, or aren’t, breaking federal law. I, personally, don’t have a problem with what they’re doing, but the simple fact is that if it violates FAA/Homeland Security rules it can get you into a lot of trouble (even if it’s just a light model rocket). I just figured it made sense that we should be aware of the issue so that we know, ahead of time, that we may, or may not, be risking an things like hefty fines.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165240",
"author": "asheets",
"timestamp": "2010-08-03T18:54:57",
"content": "@Colecago — In that case, I take it back. It succeeded nicely. Although, I suppose the NAR might have something to say about that. Nevertheless, I look forward to more from these builders.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165247",
"author": "asheets",
"timestamp": "2010-08-03T19:07:53",
"content": "So, who’s gonna build a camera-equipped rockoon (rocket-balloon)? One team seems to be doing it already…http://fly.hiwaay.net/~bbrown/rockoon.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165251",
"author": "justMe",
"timestamp": "2010-08-03T19:14:54",
"content": "Fun project, works nice.Would me even more fun, if the missile would be able to track and hit a model airplane, by using a camera, and some pattern recognition algorithms on a fast microcontroller to detect the plane",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165257",
"author": "eldon",
"timestamp": "2010-08-03T19:24:54",
"content": "http://library.sciencemadness.org/lanl1_a/lib-www/la-pubs/00318644.pdfput a shaped charge on it and an infra-red camera and a rocket that will burn for 30 seconds instead of 2. If you can get the cost down to a few hundred dollars this will be the AK-47 of the 21st century.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165259",
"author": "Dave Eaton",
"timestamp": "2010-08-03T19:29:20",
"content": "I agree we should try to comply with the law. I am in the dreaming and calculating phase of a high altitude balloon project (no, not arduino, but not because I don’t just love my dweenos- I just need more horsepower.) I don’t want to piss off the FAA or cause a plane to crash, so I want to do it right. I didn’t mean to suggest being a scofflaw is a good idea. The project was getting a bit more beating than I thought it deserved, so I was just fussing.We should be critical, in the sense that we offer suggestions, question the designers (their design choices, not their politics or fashion sense) and argue amongst ourselves about the best way to do it.Epic fail? No. It took off, and some shit happened, and dudes learned something, and we’ve spent a good time bitching back and forth about it. Did it do what was intended? Heck, I’m not sure I know what was intended. If it failed to launch, or caught fire, then that would be epic. This is a run-of-the mill failure. It didn’t work all that well, and it parameterized what you can get away with in doing such a project. I learned a bit, even from you lot, so the fail isn’t epic in my mind. Comic, a little. Typical, mostly. Instructive Fail is usually not a category we use, but why not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165268",
"author": "Ke",
"timestamp": "2010-08-03T19:37:41",
"content": "wow pat.. way to turn this in to something its not. No one here is going to get “rolled up on” because of some guys fairly inaccurate execution of a guidance system (yet commendable idea, I have planned an R/C version of this since I was little and it was going to have similar build quality probably). Just some people having fun…if you are in to extremest websites and plan to be an idiot and launch in a sensitive area then yes, I agree, you will and probably should be “rolled up on”. I don’t like that I can be wiretapped at any time but come on this isn’t politics, its some guys fulfilling a childhood fantasy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165270",
"author": "Shadyman",
"timestamp": "2010-08-03T19:50:27",
"content": "@Navic and K.o.D:If you can figure out how to work one of these:http://www.goldmine-elec-products.com/prodinfo.asp?number=G17270it might help a bit :)More info on how to use it:http://www.etotheipiplusone.net/?p=428http://www.rcgroups.com/forums/showthread.php?t=1097552&page=4Cheers!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165282",
"author": "Navic",
"timestamp": "2010-08-03T20:31:58",
"content": "First of all, I’d like to thank Hack A Day for posting this. K.o.D and myself read the articles on here all the time.The term ‘guided’ was commented on, and perhaps isn’t the best word. I picked it as relative to the rocket itself, the electronics guided the rocket’s flight. Controlled would be a better term. As mentioned earlier, there is no navigation and if the definitions are not correct oh well, but I call a rocket something w/o navigation and a missile as something with navigation…. If that’s wrong, my bad.Arduino haters: It’s modular! Once this project was done I literally took the parts out and used them on other stuff with ease, that’s all. I could have soldered up a 328 barebones, but that pretty much solidifies those components to that application…. I like being able to do multiple things quickly with fewer parts, hence Arduino is the choice.This project was for fun and to learn, as Dave Eaton said. Getting controlled motion to work for a short period of time was the goal, and it worked. Efficiency was not a focus for this project, but will be for future projects of this type.About the legality of this project – I have no idea. As human beings, we both made sure there were no aircraft in the area, we had water in case of fire and launched it far enough away from houses it wouldn’t create a problem. If it’s illegal and a law enforcement official comes to hunt me down, oh well. If ‘sorry’ isn’t good enough then oh well for me, lol. Doesn’t take away the fun and success of this project.Thanks for all the comments!! Keep ’em coming!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165283",
"author": "RBRat3",
"timestamp": "2010-08-03T20:34:00",
"content": "Hmm Im not up to terms here but In order to be considered a missile doesn’t it need to carry an “explosive payload”. There are tons of things that have a guidance system and I do believe a model rocket with a micro controller and some servos is the least of anyones worries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165295",
"author": "Navic",
"timestamp": "2010-08-03T21:19:11",
"content": "Good point RBRat3!I forgot to mention the cool technical stuff… Rollerons are awesome, btw. We wanted to put a video camera onboard so we could see the amount of roll relative to the ground, but didn’t have one at the time. It doesn’t take too much fin deflection to counteract the rolling for stable flight.Rockoons are my current favorite topic, and plans are in the making for a flight to high altitude (FAA approval WILL be granted for this, so don’t worry everyone). A friend of mine that is a NAR high power rocket club member is helping me out with this. Any ‘control’ that a rocket will use at high altitude will need a gimbaled motor as mentioned before.As for this project, there were a lot of different things that could have been used, as mentioned but we took the idea and made it work with what we had, it’s not like it was a huge undertaking. We had a 2-axis accelerometer in our parts bin, so we used it. 3-axis gyros or even a full blown IMU would be a better option, but that stuff wasn’t in our parts bin. If we were paid to create something like this, or were getting some kind of credit for a degree then yeah it’d go from a weekend project to a couple months with fancy graphs, schematics and waiting for parts to come in. Same with the servos, yeah 2 work fine with all the hardware to connect them to the fins and all, but we had 4 so why not simplify?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165296",
"author": "Dennis Booth",
"timestamp": "2010-08-03T21:21:14",
"content": "Is THIS helpful?http://www.goldmine-elec-products.com/prodinfo.asp?number=g17270nice gyro…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165302",
"author": "Hirudinea",
"timestamp": "2010-08-03T21:40:23",
"content": "I’ve said it before and I’ll say it again, we must not allow this to get into the hands of terrorists. But wouldn’t it be simpler to just use wire guidence?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165314",
"author": "JB",
"timestamp": "2010-08-03T22:20:28",
"content": "@Hirudinea: I think you are underestimating those rich islamic fundamentalists. They got the money and the brains to pull this off (hey, they go to the best schools in the US and Europe!). Let’s just hope the Dept. of Homeland Security is doing its job.On another note, I don’t see why the Arduino haters aren’t happy. Crash it and you get to kill an Arduino!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165316",
"author": "JB",
"timestamp": "2010-08-03T22:20:31",
"content": "@Hirudinea: I think you are underestimating those rich islamic fundamentalists. They got the money and the brains to pull this off (hey, they go to the best schools in the US and Europe!). Let’s just hope the Dept. of Homeland Security is doing its job.On another note, I don’t see why the Arduino haters aren’t happy. Crash it and you get to kill an Arduino!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165349",
"author": "Simon",
"timestamp": "2010-08-04T01:19:29",
"content": "2 things, first – seriously how bad is the programmer if he/she didn’t add some sort of averaging to the system so that he/she allows the fins to wriggle all over the place even in a steady smooth movement, I mpknow this thing will be moving fast but it looks like this guy is just reading x and y of his spark fun accel breakout and sending it straight to the cheap noisy servos. I mean, really, it’s not hard to do a moving average, and at 16MHz you can do that many times per second, even allowing for I2C bus speeds (typically around 200Khz I beleive) and the time to send it to the servos.Ok, 2nd, how long before an arduino does make it to the moon? You’d think that it isn’t so much of a leap from a weather balloon to the moon, is it perhaps the dedication needed to monitor the rockets progress and send it trajectory updates 24/7 ? (I guess GPS doesn’t get you to the moon:P) but timezones are surely on your side in this situation…Hmm.. Long distance arduino communication tests would be interesting,, anyone out there got some ideas on this?3rd (I lied about 2) shouldn’t the rocket be black with a silly shark face?! :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165354",
"author": "therian",
"timestamp": "2010-08-04T01:40:21",
"content": "leaving breadboard ? do he realize what stress rocket face with + unnecessary extra weight",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165355",
"author": "ke7eha",
"timestamp": "2010-08-04T01:45:36",
"content": "This hack is legal by US law. By federal law, 26 U.S.C 5845, a missile is only classed as a destructive device if it has an explosive or incendiary payload of more than 1/4 ounce. A rocket is classed as a destructive device if it has more than 4oz propellant. Other than that, they need to be licensed and/or registered.The law can be found here:http://www.law.cornell.edu/uscode/26/5845.htmlYou guys probably want to look up legal terms before you [over]react.By the way, this is only US federal law. Laws vary by state, so look it up to make sure you are legal.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.67586
|
||
https://hackaday.com/2010/08/02/android-controlling-mindstorms-nxt/
|
Android Controlling Mindstorms NXT
|
Mike Szczys
|
[
"News",
"Robots Hacks"
] |
[
"android",
"bluetooth",
"lego",
"mindstorm",
"nxt"
] |
[youtube=http://www.youtube.com/watch?v=bEEVwf6E10M]
Here’s
an Android device controlling a LEGO Mindstorms robot
. [Josh] and a couple of his colleagues developed software to get both Android 2.1 (video above) and Android 1.6 (
video
) to work as Bluetooth control devices. The NXT cube is running
leJOS
, a Java virtual machine, allowing you to program Mindstorms using Java. Although their code is at an early Alpha stage, this shows that it works and is a very welcomed tool for NXT development once they get to a more stable point and release it to the masses.
| 13
| 13
|
[
{
"comment_id": "165007",
"author": "Kyle",
"timestamp": "2010-08-03T01:08:14",
"content": "Is it just the youtube video or am I missing a link somewhere. Still interesting to see and hope to see more of this project here",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165021",
"author": "Conrad Kramer",
"timestamp": "2010-08-03T02:29:01",
"content": "Right now im working on a similar project for iPhone using the open-source BTstack tool. Its great because you dont even need a custom program runnning on the device, the iPhone just connects and takes complete control. LEGO even documents the protocol in depth on their site (its just basic RFCOMM).The App already has a great UI",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165056",
"author": "therian",
"timestamp": "2010-08-03T05:51:42",
"content": "I remember there is perfectly good open source C compiler with libraries for mindstorm, if it lack bluetooth then adding it makes more scene than using language that absolutely unsuited for embedded design, simply there isn’t much space in those bricks for visualization",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165076",
"author": "ridou",
"timestamp": "2010-08-03T07:37:30",
"content": "There is a source code in C that does the same thing and even better it makes “beep beep” when moving back:http://tom.tomoueb.com/blog/201002092144-nxosremote.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165079",
"author": "Daniel (Finder)",
"timestamp": "2010-08-03T07:51:51",
"content": "@therian Are you talking about NXC? I’ve used it a lot. It is everything, but good. Okay, it works, but with a lot of bugs and is limited by the virtual machine running on the NXT. However you don’t need to run any 3rd party sw on NXT to control it over bt. There are commands for it interpreted by the NXT’s OS. (I’ve used them, too.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165083",
"author": "Josh",
"timestamp": "2010-08-03T08:22:45",
"content": "I’ve created a small Page with info how to use it:https://wiki.evolvis.org/freedroidz/index.php/Android_Remote_en:-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165096",
"author": "therian",
"timestamp": "2010-08-03T09:52:16",
"content": "yes NXChttp://bricxcc.sourceforge.net/nbc/during freshmen year I use it for class final projecthttp://www.youtube.com/watch?v=xHsDvYUvXUcall my teammates agreed that it not worse that commercial RobotC compiler and I dont remember having bugs problems(also it was 3 years ago), in fact our team score record hight collecting most flags in course history and we spend least time on it, so I have only positive memories",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165115",
"author": "Nemo",
"timestamp": "2010-08-03T12:48:00",
"content": "@therian-LOL, Java was originally created for embedded design. It was supposed to be the language used for interactive television and home appliances, but then its scope became larger when they realized how much potential it had for the web. The same features that make it good for the web make it good for embedded design, and vice versa.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165118",
"author": "therian",
"timestamp": "2010-08-03T13:06:07",
"content": "@Nemo Java was mine first language and I remember it was problem to control even COM port, no need in mentioning any attempts to asses hardware, its a sandbox, as for history they newer intended to use it on uC",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165126",
"author": "Anon",
"timestamp": "2010-08-03T13:30:53",
"content": "Phone controlled legos, how interesting…This is barely a hack. Legos belong on Instructables…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165159",
"author": "Daniel (Finder)",
"timestamp": "2010-08-03T15:04:59",
"content": "@therian I’ve done a lot of stuff with NXC (ex. 8 NXTs in one network using I2C interface on the sensor ports and bluetooth) and I know a lot about this language.Just a few problems:– If you put two empty whiles or untils after each other, none of them will be executed. You have to put something (ex. PlayTone) between them.– For a very long time the loop variable couldn’t be used as an index for an array.– You have to wait a little before sending data on BT after you have received data, otherwise your data will not be sent. We had a lot of problems with this, because it was not documented at all.…However, you can get used to it and it is still a lot better than using NXT-G.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165190",
"author": "spiritplumber",
"timestamp": "2010-08-03T16:38:16",
"content": "Pretty cool, we did this with video :)This should be tagged under android hacks…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165374",
"author": "therian",
"timestamp": "2010-08-04T03:00:37",
"content": "“it is still a lot better than using NXT-G.”I was amazed that it went all the way to become a product, it do not qualify even for a toy. By submitting final code those programmers committed career suicide",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.720708
|
||
https://hackaday.com/2010/08/02/handheld-plays-snes-and-nes-carts/
|
Handheld Plays SNES And NES Carts
|
Mike Szczys
|
[
"handhelds hacks",
"Nintendo Hacks"
] |
[
"nes",
"portable",
"psone",
"retro duo",
"snes"
] |
[Lovable Chevy] finished her portable build, ending up with
a handheld that takes both SNES and NES cartridges
. We’ve got to say congratulations on reaching the finish line as her first
build log
post was in March of ’08. But it was worth the wait. The little device, which is a mash-up of the hardware from a
Retro Duo
along with a PSone screen and 4250 mAh battery, looks quite nice thanks to her skill and patience when building the case. Take a look at the obligatory demo video after the break.
[youtube=http://www.youtube.com/watch?v=mX36JHB1ONc]
| 23
| 23
|
[
{
"comment_id": "164971",
"author": "Mikey",
"timestamp": "2010-08-02T22:39:37",
"content": "This is amazing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164973",
"author": "Stuart",
"timestamp": "2010-08-02T22:41:53",
"content": "This is excellent, well done. The case looks really well made, i’d love one of these!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164974",
"author": "girrrrrrr2",
"timestamp": "2010-08-02T22:49:14",
"content": "Um… how?!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164982",
"author": "zool",
"timestamp": "2010-08-02T23:15:33",
"content": "great job on that casemore people should take time in making their hacks look good",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164983",
"author": "Erik Johnson",
"timestamp": "2010-08-02T23:15:42",
"content": "Talk about retro! The video even looks like it was recorded on VHS",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164988",
"author": "Marco",
"timestamp": "2010-08-02T23:30:24",
"content": "Cool, but now she’s got to update it for the RetroN 3",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165026",
"author": "lovablechevy",
"timestamp": "2010-08-03T03:02:20",
"content": "thanks for the comments, guys. it didn’t really take me literally 2.5 years to complete. i had it stored away for well over a year of that time. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165030",
"author": "Osgeld",
"timestamp": "2010-08-03T03:27:30",
"content": "goes to show what a little putty and a shit-ton of sanding will net you (if you dont goof the paint)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165041",
"author": "PolyJetter",
"timestamp": "2010-08-03T04:29:42",
"content": "I don’t mean to sound demeaning and I understand that the process is sometimes as important, if not more so than the result but I don’t personally understand these type of hacks. The NES cartridge is huge and only holds one game. You could theoretically put every single NES and SNES and Genesis and GB and GBA and such on a single SD card and play on a DS or GB mini or the like – it would be significantly smaller and you would not have to carry around multiple cartridges and it would be more comfortable to play as there is less weight, bulk, etc.Nice hack but I am not sure how practical these truly are.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165045",
"author": "Comrade",
"timestamp": "2010-08-03T04:55:31",
"content": "@PolyJetterThe point of portable system hacks isn’t necessarily to make them “practical.” It’s the act of planning, designing, and following through to create something with your own hands that’s important in all hacks/mods. The hacker in this case obviously spent some time in not only getting/building the right case, but also making it look good. Pulling off this sort of portable hack at this quality requires the individual to be skilled in multiple areas and really shows not only their love for the console (to keep it alive and well in a new age) but also their attention to craftsmanship.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165063",
"author": "jeditalian",
"timestamp": "2010-08-03T06:02:05",
"content": "well i think it’s awesome. anyone can do it with an SD/microSD because all it takes is a computer and a card reader, but to make it actually accept and play standard NES/SNES carts that you actually own.. takes skill. an NES or SNES could be built in the size of a wristwatch nowadays, and a microSDHC could hold all the games ever made for them. but the screen would be really small and this is the perfect size because games from those systems really look better on a small screen, since there wasnt a ton of detail, as opposed to ps3 graphics.i took a $5 broken laptop, fixed it, found out it was 2ghz with 512 mb ram, 30gb hard drive. the touchpad connector broke so i removed the touchpad, i accidentally shorted out the backlight in the screen (can make it light up by bridging 2 points on the board, but dont know if that would cause problems like overheating) so i ripped off the screen as well, since the hinges were destroyed and i would have had to use ductape to make it back into a laptop.. then i loaded up all the atari, gb/gbc/gba, nes, snes, sega games i could find, a few n64 and the ones for MAME that i could find bios for. now you need a mouse bc the touchpad cant connect, and it only has 2 usb ports, so using a usb mouse means you can only plug in one controller without using a pcmcia card or hub for extra usb ports.. but you connect to tv via VGA or RCA and play all the games you want. except for marvel vs capcom 2 which i wanted but didnt get working with MAME before i gave it a new home.anyway, that thing looks really good and works better than the original NES and is faster turning on than either of the original systems too. the only thing i would do differently is use a bigger display, but that = more $ and less battery life, plus it’s probably big enough in person since you arent going to be playing 2 players or anything. this is what i always thought should have fit inside those big old original gameboys. looks about the same size, just better looking. there would def. be a market for that, even today. for the kids of the future(present) that haven’t had the chance to play the games we grew up on. cuz when you’re 3 you should be able to beat some old school mario, i know i was doing it when i was 2. pretty sure i didnt have a game genie yet. and it has awesome replayability, or we wouldnt still be playing it 20 years later.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165074",
"author": "deltron",
"timestamp": "2010-08-03T07:28:28",
"content": "@jeditalian save us your life story",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165086",
"author": "strider_mt2k",
"timestamp": "2010-08-03T08:48:22",
"content": "I am so sorry that I cannot buy one of these.I love emulation and all but this is just…so cool!!Really well done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165116",
"author": "blue carbuncle",
"timestamp": "2010-08-03T12:48:55",
"content": "jeditalian: I have made many friends happy with softmodded original xboxes loaded with emus. Ya can pick up old xboxes for all of $20 and from there it takes about an hour to get everything FTP’d to it. I like your laptop fix up as well. Had a guy kinda rip me off on CL with a nice core2duo with bad screen. I yanked the screen, ran VGA out to the tv, USB capture card and we have a tiny lil HTPC that sits under the entertainment center :) A couple of hopefully helpful suggestions. The USB problem: Targus 4 port adapter for $10 or perhaps a bluetooth mouse that you can use from the couch :) CheersAlso nice build on this game system :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165129",
"author": "osgeld",
"timestamp": "2010-08-03T13:45:45",
"content": "yea I have a softmodded xbox also, it runs a long time off of batteries and is totally portable",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165149",
"author": "SCHALCH",
"timestamp": "2010-08-03T14:37:16",
"content": "Can I buy one???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165215",
"author": "jeditalian",
"timestamp": "2010-08-03T17:45:13",
"content": "i have a broken xbox in a closet. might not be broken but the games are definitely broken. i hate optical media, the idea of charging ~$60 for a game on an optical disc that needs to be handled with care and won’t get replaced by the manufacturer when it does die. LONG LIVB CARTRIDGE GAMING! playstation, xbox.. i am not buying another console until they start packing the games on flash memory carts again like the good ol’ days, no matter how awesome they get, the cd/dvd/bd is still going to get FUBAR one day. that’s what’s awesome about this handheld. those carts will outlive their owners.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165248",
"author": "osgeld",
"timestamp": "2010-08-03T19:12:35",
"content": "jeditalian, dude WTF I still own cd’s from 1987its easy, dont Frisbee them into your xbox like a 6 year old and put them back in the case when your done",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165272",
"author": "zenaxe",
"timestamp": "2010-08-03T20:02:58",
"content": "Reminds, me… I should dust off the Sega Nomad, I have lying around somewhere! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165448",
"author": "Alexander Rossie",
"timestamp": "2010-08-04T09:44:39",
"content": "No matter what women achieve when they hack, I just wonder what they look like…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165582",
"author": "David R",
"timestamp": "2010-08-04T19:35:56",
"content": "Neat build, but too bad about the hardware he based it on is just an emulator and not the original console hardware. It is not compatible with some very popular games such as Battletoads, Paperboy, Secret of Mana, Donkey Kong Country, Kirby Super Star, Super Metroid, Super Mario Kart, or Super Mario RPG :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166958",
"author": "lovablechevy",
"timestamp": "2010-08-09T04:32:41",
"content": "@ david r – ummmm… can you read? or look at a picture? or watch a video…? i’m a GIRL. not a he. and you are not really correct about all those games. as you can see in the top picture, it plays super mario rpg just fine. and it does all the donkey kong counries as well. and super metroid and super mario kart and secret of mana. get your facts straight or at least learn to read a little.http://www.youtube.com/watch?v=5aVHCGduREo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "366302",
"author": "TheWhiffet",
"timestamp": "2011-03-24T13:15:52",
"content": "I think it’s freaking badass. Great work on the case by the way. It looks absolutely amazing.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.394113
|
||
https://hackaday.com/2010/08/02/light-bulb-form-factor-computer/
|
Light Bulb Form-factor Computer
|
Mike Szczys
|
[
"Multitouch Hacks"
] |
[
"camera",
"computer",
"light bulb",
"luminAR",
"projector"
] |
This
computer can be mounted in any standard light bulb socket
. It uses a pico projector combined with a camera to generate a touch display wherever you shine it. The photo above and the video after the break show the bulb in a motorized lamp arm but that’s just smoke and mirrors, the bulb itself is the core concept. We think there’s real potential for home-built versions. We’ve seen touch
displays similar to this that mount on the side of a laptop
, but why have the computer around at all? Ditch the USB connection for wireless and have it connect to your home server for processing power. It becomes a perfect solution for places that aren’t traditionally computer friendly. For instance, that
kitchen computer you don’t want to touch
with dough-encrusted hands becomes washable when the display is projected on a cutting board.
[youtube=http://www.youtube.com/watch?v=XV5V-dQW8CI]
[Thanks Ryan]
| 21
| 21
|
[
{
"comment_id": "164956",
"author": "chibiace",
"timestamp": "2010-08-02T21:54:38",
"content": "pretty cool. easy access to projected boardgames, and shining the screen on the wall would make it alittle easier on your neck",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164958",
"author": "DarkStormTrooper",
"timestamp": "2010-08-02T21:58:14",
"content": "Very Nice, imagine having the ability to connect this to any light socket when you need an interface to a PC without needing to lug a monitor, keyboard and mouse around. It would be perfect for IT repair personnel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164959",
"author": "biozz",
"timestamp": "2010-08-02T21:59:41",
"content": "i like the concept but actually getting a computer on that thing without having it to big and get a power supply on that may be hard with current tech",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164962",
"author": "mowcius",
"timestamp": "2010-08-02T22:10:35",
"content": "Oh sometimes articles take a long time to get onto hackaday.I will have to start submitting them more often!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164975",
"author": "M4CGYV3R",
"timestamp": "2010-08-02T22:54:32",
"content": "I want one. I’ll name it Jarvis.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164981",
"author": "TheEngy",
"timestamp": "2010-08-02T23:15:10",
"content": "Yeah this reminds me of the robotic arm in Iron Man that kept extinguishing Tony when he wasn’t on fire. This makes me only want one more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165016",
"author": "013",
"timestamp": "2010-08-03T01:59:23",
"content": "It’s so cool that the computer/projector/camera combo fits an existing standard light bulb socket! The real draw for me is the robotic arm interface. Being able to move my monitor on my desk at will would be fantastic!I could also easily see this as, say, a dock for an Android device, making your phone interface projected on your desk/lap/etc. It’s certainly make watching YouTube or reading e-mail easier on the eyes.I’d love to see the two versions working together: Have the robotic portion act as your desk display/keyboard, while the lamp version is pointed at a static point on the wall. This would allow for a flexible, multi-display interface composed entirely of robotic or flex-lamp fixtures.Need more monitors? Screw in some more bulbs. Suddenly that lamp with four flex arms has just become one of the most advanced computing devices in the world :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165040",
"author": "fluidic",
"timestamp": "2010-08-03T04:13:52",
"content": "Pico projector touch-anywhere implementation on a robotic arm. Okay, cool. That’s one robotic arm more than the last three similar projects I saw, and I’m always up for a gratuitous robotic arm.But that said, it doesn’t actually fit in a light bulb socket, now does it. Between those data cables and it being too heavy for the desk lamp to support…nice concept video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165049",
"author": "praetorious",
"timestamp": "2010-08-03T05:23:40",
"content": "This would be perfect for my workbench. I usually have a work lamp for the light, and a laptop with schematics taking up too much space. With this, I could project the schematic on my work.Quick access to PCBs, diagrams, 3d CAD files is exactly what i need.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165067",
"author": "jeditalian",
"timestamp": "2010-08-03T06:22:04",
"content": "stupid touchscreen gave me splinters! lol wear gloves if you plan on using it on wood that isnt all smooth n stuff",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165084",
"author": "Ayush Sood",
"timestamp": "2010-08-03T08:24:35",
"content": "I really wish they would give us a how-to. Something or anything. Is there any other project like this that is documented?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165092",
"author": "James",
"timestamp": "2010-08-03T09:11:58",
"content": "Does anyone know if these pico projectors have keystone adjustment? It seems unlikely but I’ve some plans in a restricted space and I don’t really want to drop hundreds on a powerful data projector that is complete overkill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165110",
"author": "mike",
"timestamp": "2010-08-03T11:41:31",
"content": "I like how he described the pixels as being “trapped” on a normal screen. Poor pixels, all they want is to be free.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165114",
"author": "turn.self.off",
"timestamp": "2010-08-03T12:43:37",
"content": "given the usb cable from the back of the project and camera combo, i suspect its basically a io interface for a more conventional computer housed somewhere else.still, a dual setup where your reading lamp becomes the keyboard and a more ordinary pico-projector makes use of the wall is as interesting, as it frees up space.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165135",
"author": "fartface",
"timestamp": "2010-08-03T13:55:48",
"content": "too bad those pico projectors are way overpriced and really crappy.I’d pay $99.00 for one, not the $699 they try and get.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165144",
"author": "Chad Small",
"timestamp": "2010-08-03T14:24:19",
"content": "What would be cool is if there was a way for it to access the network through the light socket similar to the powerline solutions for home networking. Then you wouldn’t need to worry about connectivity in areas of the home with bad wireless and with powerline now reaching 200mbit it would be extremely capable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165234",
"author": "turn.self.off",
"timestamp": "2010-08-03T18:19:21",
"content": "or how about replacing the light socket with a ethernet port? There was a recent announcement about ethernet potentially replacing usb, hdmi and power cables in one go.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165388",
"author": "tim",
"timestamp": "2010-08-04T04:19:24",
"content": "it’s a FAKE,but funny concept",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166246",
"author": "Cole",
"timestamp": "2010-08-06T18:51:43",
"content": "Anyone know of a good c++ library to detect finger input on a surface like this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166339",
"author": "Brian",
"timestamp": "2010-08-07T01:33:38",
"content": "I wonder just how well several of these would work together (interoperability). If you could manage a 2 * 2 matrix with four of these, you could probably scale to any arbitrary size. It would be great for engineering (CAD) applications, because you wouldn’t have to sacrifice resolution for size.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167438",
"author": "ben",
"timestamp": "2010-08-10T23:52:48",
"content": "that would be awesome, i could see that being in offices everywhere.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.455282
|
||
https://hackaday.com/2010/08/05/rgb-vu-meter/
|
RGB VU Meter
|
Mike Szczys
|
[
"Peripherals Hacks"
] |
[
"18F2550",
"lm2576",
"pic",
"usb",
"VU meter"
] |
[Simon Inns] turned out this
VU meter with a 16 RGB LEDs
. He’s using three 16-bit TLC5940NTG LED drivers for the project. They’re not cheap chips but they do a great job. If you were looking to save on parts [Simon] found there’s more than enough brightness and any loss due to multiplexing would not be a problem. The device connects to a computer via USB thanks to the PIC 18F2550 which he’s used in
his past VU meter projects
. One of the design choices he made was to use a switching power supply. The LM2576 (
datasheet
) has no problem sourcing 3A at 5V and in addition to two electrolytic capacitors which are commonly used with linear regulators, you just need to add a diode and an inductor.
The meter offers several different configurations which are set on the PC side of things. These include the colors that are used and if the entire bars is used as one meter or split into sections to display both audio channels. Check it out after the break.
[youtube=http://www.youtube.com/watch?v=J3BraNUj2cY]
| 18
| 18
|
[
{
"comment_id": "165946",
"author": "Tim",
"timestamp": "2010-08-05T21:11:18",
"content": "Here’s my idea… Use the R, G, and B color channels to display three overlapping bars representing low, mid, and high frequencies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165958",
"author": "MrX",
"timestamp": "2010-08-05T21:43:50",
"content": "@TimSounds a cool idea but will end up as a psychedelic light effect instead an actual VU meter. People will not be easily able to differentiate low/mid/high frequencies from a composite (RGB) light.I would however put three rows of filters corresponding to R,G and B respectively side-to-side on top of the leds, to split the low/med/high frequency levels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165970",
"author": "Alex M.",
"timestamp": "2010-08-05T22:48:50",
"content": "Cool, but it seemed nearly always pegged at the limit all the time. Seems like he needs to turn down the sensitivity slightly so less LEDs are constantly lit up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165999",
"author": "Andrew",
"timestamp": "2010-08-06T00:41:12",
"content": "Those LED drivers can be awfully expensive. (Well, unless you ask TI for samples, then they are free ;))Instead, you can use your microcontroller to multiplex the LEDs instead. Overdrive them just a bit (but under the LED’s max pulse current rating) to maintain brightness. Be careful though, because this method can make it easy to burn out the LEDs if there is something wrong with your multiplexing code and you keep the LED on for too long!-Andrew",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166008",
"author": "Brian",
"timestamp": "2010-08-06T01:04:21",
"content": "Those chips aren’t expensive at all, Avnet has them at $1.84http://avnetexpress.avnet.com/store/em/EMController?langId=-1&storeId=500201&catalogId=500201&action=products&N=0&hrf=www.avnet.com&term=TLC5940NTG",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166020",
"author": "Chris",
"timestamp": "2010-08-06T02:23:30",
"content": "Great project! but it does lack “peak hold” and and sensitivity.. Nothing a few lines of code couldn’t fix!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166021",
"author": "AnarKIT",
"timestamp": "2010-08-06T02:35:20",
"content": "Perhaps instead of 3 overlapping bars, make it into a sort of spectrum analyzer with each led representing one frequency band, and its color relating to its intensity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166025",
"author": "tim",
"timestamp": "2010-08-06T02:48:23",
"content": "Beautifull project,Excellent PC softwareBrilliant USB/HID example for using uC with PCAND IT IS NOT ARDUIno !i give him a 10",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166055",
"author": "null",
"timestamp": "2010-08-06T05:02:27",
"content": "The amount of hifis, mixers etc gets thrown into the trash with far better vu meters/year is fuckhigh. So why dont u just go to the junkyard get some. He calls this expensive hah. I wouldnt pay a 1$ for this trash.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166057",
"author": "Tim",
"timestamp": "2010-08-06T05:09:07",
"content": "@MrX: I guess it depends on what you are using the meter for… Some people are audio engineers.. To me they are pretty much a decoration. It should be easy to expand the interface to include /all/ of these ideas.@AnarKIT: yeeeeeeah",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166118",
"author": "trophosphere",
"timestamp": "2010-08-06T09:06:48",
"content": "@Time: Here it is:http://www.youtube.com/watch?v=wXb3XfN_XKs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166162",
"author": "elektrophreak",
"timestamp": "2010-08-06T13:50:36",
"content": "i love these TLC chips, i am working with TLC59401 right now :)they are just grrrreat!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166224",
"author": "Leo",
"timestamp": "2010-08-06T17:47:38",
"content": "@nullHis [and many of hackaday’s readers’] fun is in building and designing these circuits. If yours is in rummaging through rubbish piles, then don’t let us stop you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166420",
"author": "strider_mt2k",
"timestamp": "2010-08-07T08:52:58",
"content": "Neat! the ICs reflect the light a little bit too.This is one clean project. Nice work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166768",
"author": "M4CGYV3R",
"timestamp": "2010-08-08T13:26:21",
"content": "I’m not sure just from the video, but I can’t tell if this is actually a VU meter or just a level meter with colors and patterns.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167924",
"author": "Hap",
"timestamp": "2010-08-12T17:50:35",
"content": "Mike, found your circuit while searching the web.Decided to clean-up the PCB layout using the four sided board layout, also using a different 5 volt Reg which is now heatsink to the top and bottom side of PCB with feedthrough. The shorten the PCB somewhat. After that made another board using SMT parts instead of feed through holes and DIP’s. If you wish a copy of PCB layout could send it forward.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "198887",
"author": "FANZONE",
"timestamp": "2010-10-18T22:09:20",
"content": "HEX???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402105",
"author": "Diou",
"timestamp": "2011-06-05T22:41:09",
"content": "when do i to buy a this?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,396.892531
|
||
https://hackaday.com/2010/08/05/txtbomber/
|
TxtBomber
|
Mike Szczys
|
[
"Arduino Hacks",
"News"
] |
[
"chalkbot",
"graffiti",
"ink",
"txtbomber"
] |
The txtBomber is a high-tech graffiti printer
developed by [Felix Vorreiter]. Details are a bit scarce but the video clip after the break proves that this works quite well. [Felix] admits this is Arduino powered but we’re going to have to guess at the rest of the setup from the pictures. He says there are built-in-pens so we’d bet there’s a felt-tip type of thing going on and those look like seven solenoids that actuate them. He posted a picture of the handle side of the device and we can make out two wheels that are connected to LEGO gears. This tracks movement of the txtBomber across a surface in order to synchronize the printing process. There’s no sign of an LCD so it looks like you have to pre-program the messages before you go out into the field.
This is akin to
the Chalkbot
, but the messages that leaves wash away with the rain. This one seems like it might get you into some trouble if you get caught
leaving permanent tags
around the neighborhood.
[vimeo=http://vimeo.com/2109234]
[Thanks Kermit M]
| 22
| 22
|
[
{
"comment_id": "165914",
"author": "pod",
"timestamp": "2010-08-05T19:07:33",
"content": "reminds me of that nike street printer of some years ago :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165924",
"author": "KnMn",
"timestamp": "2010-08-05T19:45:32",
"content": "This is very cool. I am inspired.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165928",
"author": "Spuds",
"timestamp": "2010-08-05T19:52:13",
"content": "At the second HOPE conference (1996 or 1998, I can’t remember) a guy did something like this with a large RC car… except it was 7 cans of spray paint. The faster the car went, the harder the nozzles were depressed and the faster the paint came out.That car would zip along and could print about 10 characters per second at the fastest pace.This thing reminded me directly of that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165929",
"author": "Taylor Alexander",
"timestamp": "2010-08-05T19:54:35",
"content": "easy way to add on the go input is to throw on a sparkfun bluetooth to serial module for ~$20 and write an android app for it.Assuming he’s got an android phone, that’s probably a lot easier than hooking up an embedded display and doing text input there!Well… a little easier.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165937",
"author": "Luke",
"timestamp": "2010-08-05T20:40:16",
"content": "This looks like a lot of fun, and a lot of trouble in a small town.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165940",
"author": "Shadyman",
"timestamp": "2010-08-05T20:47:39",
"content": "Looks like he had a bit of a problem with clogged printheads^W^W sharpies?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165941",
"author": "uC",
"timestamp": "2010-08-05T20:53:49",
"content": "The video is about 2 years old I found a similar video with a different design (fewer pens)http://vimeo.com/2109301",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165944",
"author": "niglou",
"timestamp": "2010-08-05T21:06:47",
"content": "this is lame, not even a hack and its over 3 years old.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165963",
"author": "8-[",
"timestamp": "2010-08-05T21:58:16",
"content": "Taylor Alexander:There’s nothing like SparkFun in Germany ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165965",
"author": "Hirudinea",
"timestamp": "2010-08-05T22:01:13",
"content": "When I was a kid we had to use spraypaint and walk up hill to get it, both ways! And what will happen to penmanship, um, I mean canmanship.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165984",
"author": "Malcolm",
"timestamp": "2010-08-05T23:36:06",
"content": "There is a company who does skywriting with a similar technique",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165986",
"author": "Malcolm",
"timestamp": "2010-08-05T23:37:16",
"content": "@Hirudiea… you left out the part about feeling lucky to have the small moldy piece of bread for dinner :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165992",
"author": "vonskippy",
"timestamp": "2010-08-06T00:09:58",
"content": "Great – now any no-talent asshat can vandalize stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166002",
"author": "bang",
"timestamp": "2010-08-06T00:43:17",
"content": "@vonskippysince when have there been requirements for vandalizing? last time i checked, little to no talent is needed to ‘vandalize stuff’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166059",
"author": "Spork",
"timestamp": "2010-08-06T05:23:05",
"content": "@bangI think vonskippy was referring to the art form that is graffiti. It really does take practice and a lot of artistic ability to do nice graffiti work.That said, I don’t consider dot-matrix looking print to be very artistic, even though the hack was pretty well done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166107",
"author": "adpsimpson",
"timestamp": "2010-08-06T08:19:54",
"content": "@ 8-[ – there’s a company called Watterott electronics, which acts as a redistributer of many Sparkfun components, based in Germany – check outhttp://www.watterott.com/(they’re cheap and ship to the UK too – I’ve used them from here)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166108",
"author": "adpsimpson",
"timestamp": "2010-08-06T08:26:08",
"content": "Last attempt is stuck in moderation limbo…@ 8-[ – there’s a company called Watterott electronics, which acts as a redistributer of many Sparkfun components, based in Germany – easy to find on google (they’re cheap and ship to the UK too, I’ve used them from here)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166130",
"author": "fede.tft",
"timestamp": "2010-08-06T09:54:36",
"content": "Do someone know the name of the 3D CAD he used to model this?There’s a screenshot in the link.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166146",
"author": "woutervddn",
"timestamp": "2010-08-06T11:34:39",
"content": "@fede.tftat first it looks a bit like SolidEdge (Siemens), but it’s not the same. But it might be that he uses an other version of it..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166149",
"author": "Khordas",
"timestamp": "2010-08-06T12:58:16",
"content": "This seems to me to be more useful for political speech than for graffiti art. It’s both faster and more readable than using a spray can, for those times when you gotta get the message out, and not get caught by da man.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166874",
"author": "wdfowty",
"timestamp": "2010-08-08T20:47:21",
"content": "Cool? Yes.Graffiti? Not so much.I hate how people think any old writing on the wall is graffiti.Real graffiti takes time, multiple colors, and TALENT. This robot can “tag” at best…Leave REAL graffiti to the pros ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2932026",
"author": "William Donnelly",
"timestamp": "2016-02-24T03:46:49",
"content": "Needs a tighter pixel pitch.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.935078
|
||
https://hackaday.com/2010/08/05/using-makerbot-for-dishwasher-repair/
|
Using Makerbot For Dishwasher Repair
|
Mike Szczys
|
[
"Repair Hacks"
] |
[
"blender",
"dishwasher",
"makerbot",
"part",
"replacement"
] |
[Daryll Strauss’] dishwasher had some problems that he traced to a worn out part on the upper spinning arm. The hackerspace he belongs to has a Makerbot and he though this would be the perfect opportunity to
print his own replacement part
. He picked up some inexpensive digital calipers and set to work mapping out the dimensions of the broken piece. He took his hand-drawn cross section and built a replica part in Blender. Once he had it just right he generated the g-code and printed the part. His replacement works very well, and it’s a bit thicker (by design) than the original so hopefully that means it will hold up longer.
| 30
| 30
|
[
{
"comment_id": "165859",
"author": "osgeld",
"timestamp": "2010-08-05T18:03:57",
"content": "so instead of going to the appliance repair shop and spending a few bucks were suposta use a 400$ makerbot and make a crappy rough looking replacement which will fail?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165879",
"author": "redbeard",
"timestamp": "2010-08-05T18:15:44",
"content": "@osgeld yes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165880",
"author": "gac",
"timestamp": "2010-08-05T18:18:12",
"content": "Imagine the possibilities! No more having to wait for weeks only to get the wrong part because of some crummy technical data sheet that you can’t even read. I love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165884",
"author": "bothersaidpooh",
"timestamp": "2010-08-05T18:23:54",
"content": "10/10 for ingenuity, and yet another application for makerbots.wonder if you could extrude an extruder mask out of HDPE etc then electroplate into it(might take a while) a custom nozzle then remove the mask. No nasty drilling and tapers etc plus gripping rings and custom mouldings for sensors and the nichrome wire become a one step operation.hope this helps people :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165885",
"author": "jeff-o",
"timestamp": "2010-08-05T18:24:32",
"content": "Very cool. Sometimes it’s very difficult or even impossible to find repair parts like this, especially for an older machine. I’d much rather buy a makerbot than a new dishwasher!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165888",
"author": "cryogen",
"timestamp": "2010-08-05T18:31:15",
"content": "It’s probably the dishwasher thing, but this reminds me of the time I repaired my mother in law’s dishwasher. The pivot for the upper arm had broken in half, and I noticed it was a weak, thin and cheap plastic part. It also happened to be conveniently hollow. So not wanting to spring for a new weak, thin and cheap plastic part, I put it back together using superglue and then pit a steel rod down the center and completely filled the rest with epoxy putty. Overkill? Yes, but it will never, ever break again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165898",
"author": "derek",
"timestamp": "2010-08-05T18:44:43",
"content": "Considering how much you are usually charged in order to replace tiny plastic parts, I think this is a pretty good idea.In most cases, you wouldn’t be able to get exactly the tiny spare part you need anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165900",
"author": "turn.self.off",
"timestamp": "2010-08-05T18:47:13",
"content": "i suspect more then a few of the plastic parts in various such machines are made to break after warranty but before some move expensive component breaks. A mix between a fuse and planned obsolescence.this then helps the capitalist system churning.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165905",
"author": "Kieth",
"timestamp": "2010-08-05T18:53:09",
"content": "Isn’t this part likely to fail once the dishwasher gets up to temperature?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165916",
"author": "bitflusher",
"timestamp": "2010-08-05T19:09:55",
"content": "@Kieth: my dishwasher goes upto 80 degrees celcius, well below the meltingpoint on the plastics used for this. so i think he well be fine. and if it happnes to wear out in a year or so, no problemen …. print it again!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165925",
"author": "redbeard",
"timestamp": "2010-08-05T19:46:22",
"content": "Thanks @mike. Also, I’d like to take a second to say: “Who cares what the replacement part for the inside of the washing machine looks like if it keeps it running?”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165926",
"author": "cliff",
"timestamp": "2010-08-05T19:47:56",
"content": "my brother does appliance repair for a large chain and it is quite possible to have a small plastic part like this to be 20-40$ if you can get it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165927",
"author": "rallen71366",
"timestamp": "2010-08-05T19:49:58",
"content": "@osgeld I used to ask a motorhead friend of mine why he spent $200 on tools and parts to do something he could have done for $80 at the local mechanics. His reply: The extra $120 gave him tools to do similar jobs for himself or others in the future. A man without tools is not a man.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165936",
"author": "turn.self.off",
"timestamp": "2010-08-05T20:39:32",
"content": "indeed, tools (or the makerbot) may have a high up front cost, but spread over the number of tasks they may get used for, the overall cost becomes very small.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165960",
"author": "me",
"timestamp": "2010-08-05T21:54:02",
"content": "haters gonna hate…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165962",
"author": "Hirudinea",
"timestamp": "2010-08-05T21:57:37",
"content": "This is great, it means now he can replace this or similar parts any time he likes, gets the experience and has the fun of doing it great! Now if only you could print in metal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165964",
"author": "jonored",
"timestamp": "2010-08-05T21:58:24",
"content": "Just a quick cost note: as he’s already got the makerbot (or reprap, or some similar machine that’s running on non-name-brand RP-specific materials), that part probably cost him 30 cents at most. (That’s based on cost from makerbot for filament, and a ten-cent leeway for electrical power – it looks like it’s less than 10cm^3 of plastic.) I’m not sure most people could get /to and from/ the appliance repair shop for much less, let alone get your part (say, 3 miles each way, 40MPG, and $2.50USD/gallon.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165974",
"author": "aztraph",
"timestamp": "2010-08-05T22:50:05",
"content": "i have mixed feelings. osgeld has a good point, especially if you have the skill set to get to the part in the first place, then go get a replacement part and make the repair. on the other hand, if you have the skill set to MAKE the part needed, I would go ahead and get an old junk dishwasher, take it apart and replace ALL the parts i could with the maker bot, just for the hell of it. reassemble it and see if it worked. but i overkill everything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165977",
"author": "concino",
"timestamp": "2010-08-05T23:11:07",
"content": "Upper Spray Arm AssemblyUSD 10.55",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165978",
"author": "MauiMaker",
"timestamp": "2010-08-05T23:12:33",
"content": "Those who say “why spend $$ on makerbot when you can buy the part cheaper” or “if you have skill set to make part” need to read Daryl’s post.He tried several times to get the part but the service people kept getting the wrong one. He doesnt own/buy a makerbot – he is a member of CrashSpace (Los Angeles), which does. He didnt have the skill set to design and build the part when he started – he read the wiki’s and learned the skills he needed. THEN HE DOCUMENTED IT for the rest of us. Of course he also had a few failures along the way – thats part of learning.If he doesnt like the quality of the Makerbot build, the design is now in STL format, so he can send it to Shapeways and have them make one out of gold plated stainless steel.Great job Daryl!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165981",
"author": "kat",
"timestamp": "2010-08-05T23:14:48",
"content": "That is a tricky part to model for a beginner. Good work either way. This sparks the dream of desktop manufacturing. Instead of buying that 40 dollar piece of crap part, just go to the local torrent or registry of reverse engineered parts by people that have had this problem before and PRESTO. New pricey parts on your desk in under an hour.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166047",
"author": "Aaron",
"timestamp": "2010-08-06T04:33:58",
"content": "Looking at this, the first thing I thought was the $5 I dropped last week on a package of “Stirling plungers” which are little plastic pegs that hold a window in place. Plus the gas to get to the hardware store, plus the 45 minutes it took to get it.and that was easy to find.So in just running a home, does stuff like that happen 100 times in a year? I’m asking myself, how long does a makerbot take to pay for itself? I’m thinking a few years anyways.Now above, cliff was talking about his friend that repaired dishwashers for a living. Bingo. Maybe not as a consumer product but as a small business product this thing could be a goldmine. Put makerbot parts into customer repairs and (assuming their durable enough) cut your repair costs as well as your turnaround times down to the floor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166054",
"author": "lurker",
"timestamp": "2010-08-06T04:52:14",
"content": "Cool…Although the legit part may have been better, here’s what I haven’t seen anyone else say yet;Someone finally used one of these countertop rapid prototypers for something USEFUL! Sure, we see people using them for POC’s and prototyping small parts all the time, but this guy made a working, drop-in replacement part with one! This is what these things should be used more for, making parts that are no longer made/prohibitively expensive. Props to hackaday for posting this one…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166069",
"author": "Frits Rincker",
"timestamp": "2010-08-06T06:11:09",
"content": "Don’t repair dishwashers, the planet is dying as it is.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166088",
"author": "leafy",
"timestamp": "2010-08-06T07:51:39",
"content": "@fritsif you don’t rinse first then modern dishwashers when only used fully loaded are more economical than washing up in a bowl!I’m still not convinced of this MAKERbot tech, it looks ropey to me. Couldn’t you spin a much higher quality part out on a lathe just as quick?I know big lathes cost big bucks but this is a tiny plastic thing and could be made on the cheapest hobby lathe",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166153",
"author": "Khordas",
"timestamp": "2010-08-06T13:10:46",
"content": "I’m seconding leafy. This could have been turned out on a hobby lathe in a few minutes, with the dimensions taken from the part on the fly. My personal preference with stuff like this is to use a blank of wax, and make a mold, then cast epoxy into it to make the part. Ya get a great surface finish that way, as the wax is really easy to cut and polish, and the epoxy is as smooth as the mold. I suppose ya could use the makerbot to swing a dremel with a router bit into the wax…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166178",
"author": "Anon",
"timestamp": "2010-08-06T15:03:45",
"content": "Wow! The first useful thing to come out of a Makerbot. Makerbots are so useless. Not to mention all the Makers out there assembling the Makerbots don’t know ANYTHING about the actual MC’s they’re using to control them. I’d ask them what they’re using and they would all tell me “I’m using the Arduino hurrr durrr.” and I’d be all like “What chip dumbA$$?”I’d say a good 80% didn’t know, sheep in a field…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166223",
"author": "The Doctor",
"timestamp": "2010-08-06T17:46:33",
"content": "It never fails: do something interesting and useful and those who are incapable come out of the woodwork to complain about it.Awesome work Daryll. Keep it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166421",
"author": "strider_mt2k",
"timestamp": "2010-08-07T08:55:24",
"content": "I think this is badass personally.Incredibly cool and creative…and PRACTICAL!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166691",
"author": "jmil",
"timestamp": "2010-08-08T04:38:37",
"content": "i don’t get it. why don’t you just throw out your dishwasher and get a new one?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.322349
|
||
https://hackaday.com/2010/08/05/android-development-101-part-5droiddraw-information-tracker-completed/
|
Android Development 101 – Part 5:DroidDraw & Information Tracker Completed
|
Greg R. Jacobs
|
[
"Android Hacks",
"Software Development"
] |
[
"android",
"dev"
] |
In this tutorial we are going to cover completing the Information Tracker using DroidDraw to design the layout of this project. This will give you insight into an alternative to the stock layout manager in the eclipse environment and how DroidDraw functions. DroidDraw can be your best friend when designing Android applications or your worse enemy if you don’t know the layout of the application and how it works. This will show you the basics to this program and how to incorporate it into your development process. This is significantly easier than the
previous post
but will teach skills on other programs to help development such as DroidDraw.
We will start out by downloading
DroidDraw
and starting it up using the downloaded
.exe
after extracting the files. After the program is up the interface is pretty straight forward. The left side of the program is the device screen and what it will look like when we run the application. The right hand side of the application gives you the objects you can place on the screen on the top half as well as displaying the generated code for you on the bottom half. This is a very unique program because you can not only choose to generate code into the bottom half of the right screen but also paste code and generate a layout of what your program already looks like to enhance it further. The pictures below will give you an idea of the layout so the paragraph below is a bit easier:
First we are going to change the
absolute layout
on the screen to a
ScrollView
. To do this we navigate to the top left of the program to the drop down menu that says
RootLayout
and change it to
ScrollView
. Then we are going to add a
LinearLayout
to the screen by navigating to the top right of the program where the tabs are and click
Layouts
. Drag the one titled
LinearLayout
to the screen on the left and drop it there. Now while it is still selcted, go to the tab on the right called
Properties
and click it. We are changing the width and height of the
LinearLayout
to
fill_parent
and then clicking
Apply
to make the change. Going back to the
Layouts
screen we are going to select
TableLayout
and drop it into the
LinearLayout
then go to the
Properties
and change it to
fill_parent
on both height and width.
Now that we have the layouts sorted out, we are going to start dropping widgets onto the screen to make the interface more interactive. To start out with we need a label that will ask for a number. Drag and drop a
TextView
from the widget tab to the screen then go to properties and change the width to
fill_parent
and the text to
Number:
. Now we need to add a TextBox (a.k.a. EditText) under the label so we drag it from the widgets to the screen and change the properties for width to
fill_parent
, the text to a blank field and the id to
@+id/NumRewards
. Then we are adding another Label, using
fill_parent
for width and changing the text to
Date:
and applying the changes. Now we add a
DatePicker
right under the label and change the id to
@+id/Date
and apply the changes. Now we need a button to be able to pull information out of our form when it is pressed, so drag a button over and change the id to
@+id/Add
and the text to
Add
then click
Apply
. At this point we have to add 2 more labels and 2 more textboxes so I will let you complete this and give you the information to change on them. The first label’s text will need to change to say
Numbers For This Month:
and the first TextBox variables that need to change is the id goes to
@+id/RewardsMonthly
. The second label will need to say
Numbers To Date:
and the ID of the second textbox will need to change to
@+id/RewardsTD
. The code will be given below if something goes wrong but playing around with the interface of DroidDraw is the best way to learn the fastest way to produce an interface with it.
Now that our interface has been laid out we need to generate it using the button at the top of the program entitled
Generate
. This will fill the bottom right of the screen that you can copy and paste into the
main.xml
file. When pasting code into the xml file you will notice in the screenshot above that my textboxes below the button are greyed out. This is accomplished by adding
android:enabled=”false”
befor the closing
>
in the EditText nodes. This will allow you to display info and not let anyone change it. Here is the code generated from DroidDraw without the enabled feature added in:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
android:id="@+id/widget33"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<LinearLayout
android:id="@+id/widget29"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<TableLayout
android:id="@+id/widget34"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<TextView
android:id="@+id/widget35"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Number:"
>
<!--<span class="hiddenSpellError" pre=""-->TextView>
<EditText
android:id="@+id/NumRewards"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="18sp"
android:phoneNumber="true"
>
<!--<span class="hiddenSpellError" pre=""-->EditText>
<TextView
android:id="@+id/widget37"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Date:"
>
<!--<span class="hiddenSpellError" pre=""-->TextView>
<DatePicker
android:id="@+id/Date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<!--<span class="hiddenSpellError" pre=""-->DatePicker>
<Button
android:id="@+id/Add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add"
>
</Button>
<TextView
android:id="@+id/widget41"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Numbers For This Month:"
>
</TextView>
<EditText
android:id="@+id/RewardsMonthly"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:enabled="false"
>
<!--<span class="hiddenSpellError" pre=""-->EditText>
<TextView
android:id="@+id/widget43"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Numbers To Date:"
>
</TextView>
<EditText
android:id="@+id/RewardsTD"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:enabled="false"
>
<!--<span class="hiddenSpellError" pre=""-->EditText>
</TableLayout>
</LinearLayout>
</ScrollView>
Here is the screenshots with the
enabled=”false”
implemented in the layout file:
Now that our layout is complete we can start by making the project. We have walked through how to make a project from previous posts so this should be familiar. This time I will leaving making the project completely up to you. After the project is made we can start coding the adapter for the database that we will heavily utilize. Most of this will be standard by now, except for the select functions where we want to grab data using specific criteria. Here is the code for
DBAdapter.java
:
package com.gregjacobs.infotracker;
/**
* @author Greg
*
*/
import java.util.Calendar;
import java.util.Date;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class DBAdapter
{
public static final String KEY_ROWID = "_id";
public static final String KEY_YEAROFREWARDS = "YearOfRewards";
public static final String KEY_MONTHOFREWARDS = "MonthOfRewards";
public static final String KEY_DAYOFREWARDS = "DayOfRewards";
public static final String KEY_NUMOFREWARDS = "NumOfRewards";
private static final String TAG = "DBAdapter";
private static final String DATABASE_NAME = "BlockbusterRewards";
private static final String DATABASE_TABLE = "tblRewards";
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_CREATE =
"create table tblRewards (_id integer primary key autoincrement, "
+ "YearOfRewards text not null, MonthOfRewards text not null," +
"DayOfRewards text not null," +
" NumOfRewards int not null );";
private static final Date date = new Date();
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
The code above is pretty standard from what we have seen so far. The only thing that I want to point out is the fact that i have a column for the day, month and year each instead of combining them into one row. I did it this way so that when referencing month and day i could do it quickly without too much code in the SQL statement added. The rest should look pretty familiar.
public DBAdapter(Context ctx)
{
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper
{
DatabaseHelper(Context context)
{
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db)
{
db.execSQL(DATABASE_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion,
int newVersion)
{
Log.w(TAG, "Upgrading database from version " + oldVersion
+ " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS titles");
onCreate(db);
}
}
//---opens the database---
public DBAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}
//---closes the database---
public void close()
{
DBHelper.close();
}
//---insert a title into the database---
public long insertRewards(String yearRewards, String monthRewards, String dayRewards, String numRewards)
{
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_YEAROFREWARDS, yearRewards);
initialValues.put(KEY_MONTHOFREWARDS, monthRewards);
initialValues.put(KEY_DAYOFREWARDS, dayRewards);
initialValues.put(KEY_NUMOFREWARDS, Integer.parseInt(numRewards));
return db.insert(DATABASE_TABLE, null, initialValues);
}
public int getAllRewards()
{
Cursor cursor = db.rawQuery(
"SELECT SUM(NumOfRewards) FROM tblRewards", null);
if(cursor.moveToFirst()) {
return cursor.getInt(0);
}
return cursor.getInt(0);
}
public int getMonthlyRewards()
{
Cursor cursor = getMonthRewards();/*db.rawQuery(
"SELECT SUM(NumOfRewards) FROM tblRewards WHERE MonthOfRewards = " +
Calendar.MONTH + " AND YearOfRewards = " + Calendar.YEAR, null);*/
if(cursor.moveToFirst()) {
return cursor.getInt(0);
}
return cursor.getInt(0);
}
//---retrieves all the titles---
public Cursor getMonthRewards()
{
Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
String WHERE = "MonthOfRewards = " + date.getMonth() + " AND YearOfRewards = " + year;
return db.query(DATABASE_TABLE, new String[] {
"SUM(" + KEY_NUMOFREWARDS + ")"},
WHERE,
null,
null,
null,
null);
}
}
getMonthlyRewards
gets all of the items in the
getMonthRewards()
method that pertain to a particular month and shows them in one of the textboxes under the button we are going to utilize in the layout. The
getAllRewards()
method will be called to show the accumulation of the items we have gotten to date.
We now move onto the
.java
file that we labeled
InfoTracker.java
. This file will utilize code that attaches an event listener to the button in our layout and when pressed it will update our textboxes below it. The code in this
.java
file has not been optimized for efficiency, it was designed to just work. My challenge to you is to understand this code, if you don’t like they way it looks, then make it better. Here is the code for
InfoTracker.java
:
package com.gregjacobs.infotracker;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.Toast;
public class InfoTracker extends Activity {
/** Called when the activity is first created. */
DBAdapter db = new DBAdapter(this);
EditText rewards;
EditText rewardsMonthly;
EditText rewardsTD;
DatePicker dateRewards;
@Override
public void onCreate(Bundle savedInstanceState) {
try
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
rewardsTD = (EditText)findViewById(R.id.RewardsTD);
rewardsMonthly = (EditText)findViewById(R.id.RewardsMonthly);
db.open();
rewardsTD.setText(String.valueOf(db.getAllRewards()));
rewardsMonthly.setText(String.valueOf(db.getMonthlyRewards()));
db.close();
// Capture our button from layout
Button button = (Button)findViewById(R.id.Add);
// Register the onClick listener with the implementation above
button.setOnClickListener(mAddListener);
}
catch (Exception ex)
{
Context context = getApplicationContext();
CharSequence text = ex.toString();
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
//System.out.println(ex.getMessage());
}
}
// Create an anonymous implementation of OnClickListener
private OnClickListener mAddListener = new OnClickListener() {
public void onClick(View v) {
long id = 0;
// do something when the button is clicked
db.open();
try{
//setContentView(R.layout.main);
rewards = (EditText)findViewById(R.id.NumRewards);
dateRewards = (DatePicker)findViewById(R.id.Date);
rewardsMonthly = (EditText)findViewById(R.id.RewardsMonthly);
rewardsTD = (EditText)findViewById(R.id.RewardsTD);
id = db.insertRewards(String.valueOf(dateRewards.getYear()),
String.valueOf(dateRewards.getMonth()),
String.valueOf(dateRewards.getDayOfMonth()),
rewards.getText().toString());
rewardsTD.setText(String.valueOf(db.getAllRewards()));
rewardsMonthly.setText(String.valueOf(db.getMonthlyRewards()));
}
catch (Exception ex)
{
Context context = getApplicationContext();
CharSequence text = ex.toString() + "ID = " + id;
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
//System.out.println(ex.getMessage());
}
db.close();
}
};
}
The code in this example was all covered in other tutorials with the only exceptions being that when we start this application we make a call to the database and see if anything is new and we make a call after we press the button to constantly update the numbers in the textboxes below. Also, the fact that we close the database after making a call differs from other applications we have made as this will possibly cut down on the battery usage instead of keeping it open the whole time. The last part we will have to do is the
strings.xml
file, so here is the code:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Information Tracker</string>
</resources>
Here are the files from my project so you may use them in comparison:
DBAdapter.java
|
InfoTracker.java
|
Main.xml
Now we have completed the Information Tracker and have a basic understanding of how DroidDraw works. This is the second to last tutorial in our series so Android Development 101 is almost over with only one last stop to make. The next tutorial will cover packaging up and signing your application into an .apk file that you can easily deploy onto your own device or market it the world using the Android Market. Until the next tutorial, Happy Hacking!
Continue on to Part 6:
Getting Ready For Market!
| 5
| 5
|
[
{
"comment_id": "165894",
"author": "dext0rb",
"timestamp": "2010-08-05T18:39:29",
"content": "thanks for these android tuts. looking forward to the apk packaging one. keep up the good work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165922",
"author": "Colecago",
"timestamp": "2010-08-05T19:43:14",
"content": "Yeah, I really like these tutorials. You should do a Bluetooth one, I’m sure lots of people would like that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166111",
"author": "mowcius",
"timestamp": "2010-08-06T08:32:15",
"content": "Agreed but please shorten the RSS feed link…It’s like torture when I am already reading through a few hundred posts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "169101",
"author": "Doug",
"timestamp": "2010-08-16T09:31:39",
"content": "[quote]The only thing that I want to point out is the fact that i have a row for the day, month and year each instead of combining them into one row.[/quote]Don’t you mean “column”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "169118",
"author": "Greg R. Jacobs",
"timestamp": "2010-08-16T12:13:59",
"content": "@Doug – Thank you for catching that, It is fixed now :)Before:The only thing that I want to point out is the fact that i have a row for the day, month and year each instead of combining them into one row.After:The only thing that I want to point out is the fact that i have a column for the day, month and year each instead of combining them into one row.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.390933
|
||
https://hackaday.com/2010/08/05/cray-inspired-pc-case/
|
Cray-inspired PC Case
|
Phil Burgess
|
[
"computer hacks"
] |
[
"case",
"casemod",
"cray",
"pc",
"retrocomputing",
"supercomputer"
] |
35 years following its introduction, and despite fewer than 100 systems deployed, the Cray-1 remains one of the most recognizable computers in history; it is a timeless icon of pure supercomputer badassery. Custom case builder [Daryl Brach] pays homage to this classic with his
third-scale model housing two modern PC motherboards
.
In an interesting reversal, the base of the model — the upholstered bench that housed cooling and power distribution for the original Cray — holds the PC motherboards and storage, while the upper section is currently just for show but may house a
water cooling
rig in the future. The paint scheme is inspired by the Cray-1 on display at the Smithsonian, though Daryl’s model does make a few modern concessions such as
LED
lighting. Hinged panels in the base flip open to access the systems’ optical drives (perhaps to watch
Tron
on DVD).
The Cray-1 ran at
80 MHz
and could house up to eight megabytes of memory…just about unfathomable performance in its day. It’s not clear what processors [Daryl] chose to outfit his system with, but regardless, even an entry-level modern PC doesn’t just run
circles
around its progenitor, it runs
ray-traced glass spheres
around it. Technology marches on, but good design never goes out of style.
| 23
| 22
|
[
{
"comment_id": "165827",
"author": "Brad Hein",
"timestamp": "2010-08-05T16:14:59",
"content": "Nice! Reminds me of a warp core, sort of.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165829",
"author": "cpmike",
"timestamp": "2010-08-05T16:21:47",
"content": "Yeah, reminds me of any of the alien-based computer cores that you would find on the original star trek series. Cool, but I’m a little ashamed I wasn’t immediately familiar with the Cray computers…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165846",
"author": "Slayer",
"timestamp": "2010-08-05T17:15:00",
"content": "Which Cray had the “waterfall” on the front? I’m assuming this was part of the cooling system. I want a case like that.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "5123676",
"author": "Cfmit Coordinator",
"timestamp": "2018-09-20T23:12:09",
"content": "The Cray-2 (1984) had a “waterfall” filled with the liquid Fourinert (3M’s artificial plasma) topping the reservoir.",
"parent_id": "165846",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165876",
"author": "Paul",
"timestamp": "2010-08-05T18:07:28",
"content": "gotta love cray supercomputers, the cray-1 in particular had a crazy amount of wiring inside the semi-triangular compartments, almost no space left inside actually.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165881",
"author": "criznach",
"timestamp": "2010-08-05T18:18:38",
"content": "Wow. My dad took me to see a real one as a kid. This one looks authentic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165890",
"author": "AlanKilian",
"timestamp": "2010-08-05T18:34:02",
"content": "(I worked at Cray for 16 years)The Cray-2’s circuitry was immersed in a transparent liquid for cooling (3M’s Flourinert)The waterfall was to keep the pressure in the tank juuuuust right.Now, how bout some wiring from the Cray-3?http://bobodyne.com/web-docs/robots/cray3/index.htmlhttp://upload.wikimedia.org/wikipedia/commons/3/3d/Cray-3_processor_brick.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165891",
"author": "AlanKilian",
"timestamp": "2010-08-05T18:37:54",
"content": "GREAT job!His model only has 11 columns.The Cray1 had 12 columns.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165899",
"author": "catzburg",
"timestamp": "2010-08-05T18:45:04",
"content": "“ray-traced glass spheres” lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165908",
"author": "Stephen Beesley",
"timestamp": "2010-08-05T19:01:38",
"content": "Nice job, [Daryl Brach]. Can you do a replica Connection Machine next? There’s some reeeeal supercomputer bad-assery. Unlike Crays, which had comfy benches you could sit on, Connection Machines had open spaces in front of them where you could KNEEL AND WORSHIP.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165910",
"author": "Kyle, also",
"timestamp": "2010-08-05T19:04:27",
"content": "I want one, we need a new couch and a new HTPC, problem solved…great work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165921",
"author": "null",
"timestamp": "2010-08-05T19:42:21",
"content": "Nice to see how useful projects people spending their time on. Lol that computer reminds me from the ones from thron and superman. I never liked those big cases and now my iphone is faster than those althogether.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165953",
"author": "mjrippe",
"timestamp": "2010-08-05T21:32:04",
"content": "I remember seeing the Cray-1 at the Smithsonian and being blown away by the *hand wired* guts! This is a really great build – thanks for sharing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165959",
"author": "Hirudinea",
"timestamp": "2010-08-05T21:51:58",
"content": "That is cooler than the other side of the pillow!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165966",
"author": "ajlitt",
"timestamp": "2010-08-05T22:05:45",
"content": "@AlanKilian It’s a shame that there’s no justification for making a cool looking supercomputer chassis anymore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165979",
"author": "ehrichweiss",
"timestamp": "2010-08-05T23:12:44",
"content": "Niiiice. I plan on buying one of the “newer” Crays…probably not to use it but just to have it around the house..though I think the Cray-1 is pretty cool looking by itself. I made my kids look at it when we visited the Smithsonian this summer…they actually were kinda impressed..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165998",
"author": "Dane",
"timestamp": "2010-08-06T00:40:08",
"content": "My father worked one of the Cray supercomputers for years. Seeing this really hits home for me. Nice job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166029",
"author": "chrisfenton",
"timestamp": "2010-08-06T03:09:44",
"content": "I actually built a cycle-accurate Cray-1 in an FPGA, although my case is only 1:10 scale (not 1:6 – that thing is huge!).@AlanKilian – Do you know of anyone that still has any Cray-1 software archived??? I’ve had a terrible time trying to track any down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166334",
"author": "D_",
"timestamp": "2010-08-07T01:14:52",
"content": "Scaled down further, this would make a fun case for the shop computer. Even this scale or larger would be OK if the case was built to do extra duty as tool or parts storage. Also multiple conventional tower cased computers could be arranged similarly, and dressed up to resemble the Cray to make a “soupercomputer”. For those who hacking has to have a purpose, the computers could run distributed application like seti@home. The biggest problem I can see is the power bill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166338",
"author": "localroger",
"timestamp": "2010-08-07T01:32:13",
"content": "I got to see one in operation in 1981 that was owned by the USAF. What you don’t see in the picture of the cool C-shaped benched CPU is the 20,000 square foot floor of disk drives, tape drives, and other peripherals that were necessary to feed the beast data and collect its output. As with the CPU, today you can hold that amount of computing power in your hand — you’re smacking it to the ground if you own an iPhone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166424",
"author": "strider_mt2k",
"timestamp": "2010-08-07T09:01:37",
"content": "iPhone tried to destroy the Cray…IT FAILED, AND WAS THROWN TO THE GROUND!!(Sorry, it’s what you made me think)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166622",
"author": "Erik Johansson",
"timestamp": "2010-08-07T22:47:34",
"content": "Sadly it’s not very comfy to sit on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419731",
"author": "Craig Duarte",
"timestamp": "2011-07-19T16:10:42",
"content": "The Cray -1 ran near 150 Mips. The reason for the shape (the round tower) was to keep the backplane wires short as possible. The wiring was actually “tuned” for performance. Frequently the tuning was so critical that if you owned a Cray-1 you also “owned” a programmer that could tune the software (ie timed loops). it was touchy equipment and was frequently “offline”.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.259622
|
||
https://hackaday.com/2010/08/05/recyclebot-digests-milk-jugs-to-feed-makerbot/
|
Recyclebot Digests Milk Jugs To Feed MakerBot
|
Phil Burgess
|
[
"cnc hacks",
"green hacks"
] |
[
"hdpe",
"makerbot",
"plastic",
"recycle",
"recycling",
"reuse"
] |
The old saying, “garbage in, garbage out” may need to be re-evaluated.
Students at Victoria University of Wellington are developing a machine that recycles old milk jugs
, extruding an HDPE plastic filament that can then be fed into a
MakerBot
for
3D printing
.
The process involves grinding the plastic into small pieces, then pressing these through a heater and
extruder
plate to produce a continuous bead of the proper diameter for the MakerBot.
Nichrome
wire — the stuff of hair dryers and
toasters
— forms the heating element, and this must be regulated within a specific temperature range for different plastics. The initial grinder design is
hand-cranked
, but they are working toward a fully automated system. It appears that the machine could also
recycle
old MakerBot output, provided the grinder has sufficient torque.
So one man’s
trash
really
is
another man’s
treasure
. We envision a future of crazy-haired makers rooting through their neighbors’ garbage, feeding their Recyclebots’ hoppers “Mr. Fusion” style.
| 20
| 17
|
[
{
"comment_id": "165801",
"author": "nave.notnilc",
"timestamp": "2010-08-05T15:26:33",
"content": "the big question is, how much does this weaken the plastic. it’d be interesting if they printed objects with this and compared strength with fresher filament.also, I am really not a fan of those slide-show picture thingies :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165830",
"author": "Rochey",
"timestamp": "2010-08-05T16:23:53",
"content": "Bravo! I’m very impressed with this. I wish we’d done things like this at university.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165834",
"author": "Toolboy",
"timestamp": "2010-08-05T16:38:52",
"content": "Is the ‘digest’ the fancy new way of saying ‘melt’? Neat-o.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165836",
"author": "Ren",
"timestamp": "2010-08-05T16:52:26",
"content": "As if we currently don’t go through our neighbor’s trash looking for maker stuff?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165837",
"author": "GTMoogle",
"timestamp": "2010-08-05T16:53:26",
"content": "Reminds me ofhttp://en.wikipedia.org/wiki/Transmetropolitanwhere the middle class gather trash from the street every morning to feed their atomic makers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165841",
"author": "the Steven",
"timestamp": "2010-08-05T16:58:26",
"content": "What about the prepwork involed with cleaning out any residue?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165862",
"author": "john",
"timestamp": "2010-08-05T18:06:05",
"content": "This is a great idea. I think nave.notnik is right though to bring up degradation of the plastic. If I’m not mistaken, plastic cannot be infinitely recycled like aluminum can because it weakens a little each time through.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165948",
"author": "zerth",
"timestamp": "2010-08-05T21:16:09",
"content": "If you mix fresh plastic with recycled, you can stay fairly close to the original strength.Where I work, we use custom made plastic posts that contain a percentage of remolded content(the rejects and sprues from the previous batch). As long as we put in at least 90% fresh, it meets spec. Although bad mixing will sometimes let the same plastic through multiple times and then we have to start over with 100% new plastic.If they bought HDPE in granular form instead of filament, then they could mix it with the recycled as they melt it. They might even be able to get the powdered HDPE for cheaper than filament.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "166009",
"author": "goibhniu",
"timestamp": "2010-08-06T01:05:41",
"content": "Yes, you have to definitly control your regrind percentage. Every time you remelt the plastic you break some of the long polymer chains into shorter chains, which do not entangled as well as the longer chains, leading to a weaker product. I would also look into the properties of the plastic you are using. ( delrin likes to thermally decompose with some very unfriendly results.)",
"parent_id": "165948",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165988",
"author": "LM",
"timestamp": "2010-08-05T23:45:45",
"content": "Hell yes!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166004",
"author": "Steve",
"timestamp": "2010-08-06T00:47:46",
"content": "I have been following RepRap and MakerBot for a long time now. I have seriously considered buying or making one. The major reason that I have not done so is I know that I would go wild making things with it, and most likely would go broke buying HDPE to feed the friendly monster.This changes things considerably. Being able to effectively recycle HDPE so it is usable by a 3D printer is something that I have thought about in passing, but have never pursued. This would drastically reduce the cost of using one of these machines, and most likely make them more affordable to a wider range of people.Keep up the great work!Steve",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166014",
"author": "Paul",
"timestamp": "2010-08-06T01:41:02",
"content": "vuw represent :-) – vuw alumni",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166038",
"author": "KnightFire",
"timestamp": "2010-08-06T03:45:09",
"content": "But… what of the refund of the deposit on all those plastic milk cartons? Is the milk carton composed of more than $0.25 worth of plastic?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6580635",
"author": "Mummm",
"timestamp": "2023-01-22T00:02:29",
"content": "They offer you a DEPOSIT on milk jugs?!Where is that happening?",
"parent_id": "166038",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "166170",
"author": "Pouncer",
"timestamp": "2010-08-06T14:29:28",
"content": "Wow, I wish they offered $0.25 per milk container where I live.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166659",
"author": "Panq",
"timestamp": "2010-08-08T01:12:27",
"content": "KnightFire: We don’t get that in NZ.With regard to the strength: Having a cheap source of plastic for jobs where the extra strength is not required (cellphone stand, casting moulds, models, etc.) would be very useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "209822",
"author": "BenBenson",
"timestamp": "2010-11-09T06:03:49",
"content": "whoever said you depolymerize the plastic is a fucktard. For polyethylene, the depolymerization point is about 450 degrees F above the melting point, FUCKTARD!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1140958",
"author": "S Taylor",
"timestamp": "2013-12-21T06:26:00",
"content": "Language Timothy. You sound like an a$$hole speaking to people like that.",
"parent_id": "209822",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "283246",
"author": "DivePeak",
"timestamp": "2010-12-13T04:09:43",
"content": "Gee, Ben – first of all, “break[ing] some of the long polymer chains into shorter chains” does not equal depolymerization, and happens at lower temperatures (and also mechanically during the grinding process) than for HDPE. As for “Delrin” (DuPont’s trade name for Polyoxymethylene or POM), the melting point is much lower than for HDPE (the product in the OP) or PET (the product you’re citing). While depolymerization will be extensive at 450°F above the melting point (at standard pressure in the absence of catalysts), it begins far below that temperature.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "283248",
"author": "DivePeak",
"timestamp": "2010-12-13T04:20:37",
"content": "@John, pure aluminium can theoretically be recycled infinitely, however in practice a lot of aluminium is alloyed with other metals. For example, most aluminium drink cans use one alloy for the top, and another for the walls. When melted down together, the resulting material is a downgrade (so it is downcycling, not recycling). It would require significantly more energy to separate drink cans back into their constituent metals for true recycling.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.550574
|
||
https://hackaday.com/2010/08/05/giant-insect-rover-works-for-us/
|
Giant Insect Rover Works For Us
|
Caleb Kraft
|
[
"Robots Hacks"
] |
[
"lunar",
"space"
] |
[youtube=http://www.youtube.com/watch?v=vwFrCpYavt4]
ATHLETE
, or the All Terrain Hex-Limbed Extra Terrestrial Explorer, looks pretty cool. This Hexapod is actually a pair of 3 legged robots that have joined together to haul some cargo off the top of stationary module. While this time-lapse shows it going pretty slowly, you get a hint at the end that it isn’t required to be quite so lethargic. One of the really cool things about this robot is the fact that the legs are multi purpose. It has a “tool belt” from which it can pull different attachments for its feet. There are many more
videos
available on their site.
[via
BotJunkie
]
| 14
| 14
|
[
{
"comment_id": "165772",
"author": "Marc",
"timestamp": "2010-08-05T14:11:44",
"content": "haha very nice video",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165777",
"author": "anon9573",
"timestamp": "2010-08-05T14:28:14",
"content": "One step closer to having a prototype Tachikoma. Now who’s working on that AI?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165785",
"author": "Jesse",
"timestamp": "2010-08-05T14:55:38",
"content": "nice! The wheels on the ends of the feet remind me of the Tachikoma/Fuchikoma from Ghost in the Shell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165786",
"author": "smurph",
"timestamp": "2010-08-05T15:00:37",
"content": "Looking at the speed of cloud movement relative to apprent robot speed, it would appear that the time lapse isn’t of uniform speed. I’m pretty sure the faster bits at the end are simply sped up more than the rest.Correct me if I’m being thick here of course.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165793",
"author": "Brad Hein",
"timestamp": "2010-08-05T15:10:56",
"content": "OMG The robots will be running Mars before we get there. They are going to destroy us and blow Earth to smitherines. ahhhhhhhhhhh!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165799",
"author": "chango",
"timestamp": "2010-08-05T15:23:24",
"content": "I hope they don’t have snowspeeders on Mars.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165802",
"author": "M4CGYV3R",
"timestamp": "2010-08-05T15:26:43",
"content": "@anon9573 Without the special Natural Oil it’s just pointless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165840",
"author": "Ren",
"timestamp": "2010-08-05T16:57:43",
"content": "Hopefully a wheel won’t lock up like on a Mars rover, but at least it would be able to use it as a leg if that happens.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165911",
"author": "Nemo",
"timestamp": "2010-08-05T19:05:08",
"content": "Tachikoma!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165913",
"author": "Shadyman",
"timestamp": "2010-08-05T19:06:18",
"content": "@Brad Hein: We’re only doomed if we ship them an Intergalactic Space Modulator.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165930",
"author": "Mike",
"timestamp": "2010-08-05T19:58:42",
"content": "Huh, never seen clouds move forwards and backwards before. Must be some new phenomena",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166148",
"author": "Holger",
"timestamp": "2010-08-06T11:35:52",
"content": "Tachikoma!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166151",
"author": "Alex",
"timestamp": "2010-08-06T13:01:43",
"content": "– Moon Base to Houston, Moon Base to Houston…– Houston here. Go ahead Moon Base.– How to say that.. hugh… That six legged insect robot that we deployed yesterday? Well it fell on its side… Copy.– Copy that Moon Base.– What do we do? Copy.– Have you tried using the girafe-shaped robot to lift it? Copy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166924",
"author": "Mad sientist",
"timestamp": "2010-08-09T01:06:45",
"content": "shouldnt that be over instead of copy? except in “copy that moon base”",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.81402
|
||
https://hackaday.com/2010/08/02/head-up-uses-facial-recognition-and-augmented-reality/
|
Head-up Uses Facial Recognition And Augmented Reality
|
Mike Szczys
|
[
"Wearable Hacks"
] |
[
"augmented reality",
"EeePc",
"facial recognition",
"head-up",
"quickcam",
"vr920",
"vuzix"
] |
Scouter is a facial recognition system and head-up display
that [Christopher Mitchell] developed for his Master’s Thesis. The wearable device combines the computing power of an eeePC 901 with a Vuzix VR920 wearable display and a Logitech Quickcam 9000. The camera is mounted face-forward on the wearable display like a third eye and the live feed is patched through to the wearer. [Christopher’s] software scans, identifies, and displays information about the people in the camera frame at six frames per second.
We can’t help but think of the Gargoyles in
Snow Crash
. This rendition isn’t quite that good yet, there’s several false positives in the test footage after the break. But there are more correct identifications than false ones. The fact that he’s using inexpensive off-the-shelf hardware is promising. This shouldn’t been too hard to distill down to an inexpensive dedicated system.
[youtube=http://www.youtube.com/watch?v=1EHzyBljB0E]
| 25
| 25
|
[
{
"comment_id": "164893",
"author": "Henrik Pedersen",
"timestamp": "2010-08-02T18:31:26",
"content": "Having worked a lot with the EEE PC’s before and written custom software I must say…DAMN THIS IS GOOD, There ain’t anything to work with. If I remember correct this type of EEE pc has 1,6 ghz cpu and 1 gb ram.If he when could port it to the 900 mhz eee pc 900 it would be even better ! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164894",
"author": "Christopher Mitchell",
"timestamp": "2010-08-02T18:37:59",
"content": "Thanks! Yeah, the lack of capabilities was a huge challenge for me. Everything realtime is hand-written in C and C++, and uses Intel’s IPP library (which contains hand-optimized ASM) for the convolution operations. A 900MHz port would operate at abysmal speeds. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164903",
"author": "cde",
"timestamp": "2010-08-02T19:04:09",
"content": "But can it accurately detect power levels over 9000?!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164904",
"author": "spiderwebby",
"timestamp": "2010-08-02T19:10:36",
"content": "ITS OVER NINE THOUSANNNND!!!!!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164922",
"author": "One guy",
"timestamp": "2010-08-02T19:51:51",
"content": "Looks like it’s seeing his nostrils as eyes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164923",
"author": "anonymous",
"timestamp": "2010-08-02T19:53:04",
"content": "@ cde and spiderwebby,you’re so clever",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164934",
"author": "Ryan",
"timestamp": "2010-08-02T20:10:50",
"content": "People always underestimate the requirements needed for image processing.2-D convolution filters require a huge computation process.OpenCV really makes the development process a lot easier than other development routes which has led to some researchers to stray from the typical Matlab/Scilab platform. I just wish that intel would implement a VHDL synthesis tool into OpenCV to exploit FPGAs concurrency.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164946",
"author": "error404",
"timestamp": "2010-08-02T21:02:46",
"content": "New crippled RSS format blows ashtrays. Full article content back plz.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164948",
"author": "Christopher Mitchell",
"timestamp": "2010-08-02T21:17:32",
"content": "Ryan, you make an excellent point, the fact that the Atom CPU, with its near total lack of concurrency, would benefit greatly even from a small and underpowered FPGA running some fast concurrent multiplies and adds to take the convolutional load off the CPU. Although it’s a nice portable platform for a wearable computing system, including connectivity and decent battery life, the power is just not there for truly realtime CNNs at this point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164951",
"author": "Ryan",
"timestamp": "2010-08-02T21:32:48",
"content": "Their are a lot of limitations to providing a truly portable embedded system for augmented reality/vision.There are various hand-off methods for DSP co-processing with FPGA specifically for image processing algorithms, but a lot of the work is current (read buggy).Concurrent realization is the way to go for image algorithms, I just hope that their becomes a better design process that doesn’t require Matlab and the required toolboxes with Xilinx’s System Generator. As that is a rather costly approach, while OpenCV is free but limited in implementation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164968",
"author": "criznach",
"timestamp": "2010-08-02T22:21:57",
"content": "I’m no expert at any of this, but I’m a long time coder and graphics enthusiast since the commodore days. Would any of this be suitable to offload to a GPU rathern than FPGA? I recently looked into nvidia’s CUDA, and it appears to support OpenCV.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164970",
"author": "M4CGYV3R",
"timestamp": "2010-08-02T22:37:00",
"content": "Nice build. I bet the detection algorithm is nuts, surprising you can run it on a rig like that with such a low-quality cam.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164979",
"author": "Hirudinea",
"timestamp": "2010-08-02T23:10:15",
"content": "I can see a future when every cop/airport security/rent-a-cop is wearing one of these things and if you see it off they haul your ass off to jail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165001",
"author": "Alfred",
"timestamp": "2010-08-03T00:45:30",
"content": "A bit confused here. First, where’s the augmented reality part? Unless this isn’t Christopher Mitchell’s face on screen, I’m not seeing any augmentation of reality. Second, of the 5 guesses the computer makes, 3 of them are wrong. Can you really get a Master’s if your code doesn’t work right? I’m not trying to be snarky, even though it sounds snarky. I’m just confused.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165002",
"author": "psc",
"timestamp": "2010-08-03T00:53:30",
"content": "hi christopher,nice nice nice! i was looking for a solution for face recognition, but didn’t find anything open source. will you share you code?right now, i am using opencv for basic face position recognition (not detecting who is who).pat",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165008",
"author": "Christopher Mitchell",
"timestamp": "2010-08-03T01:08:22",
"content": "@criznach: There are very much so, and I actually implemented a CUDA version of the CNN, but needless to say that has no applicability to the kind of portable system I was aiming for.@Alfred: No offense taken. The main point of the thesis is the detection algorithm, ie, the thing that detects faces as faces and potatoes as not faces. Secondly, the demo video is taken with me having removed the goggles and placed them in front of me, so you’re seeing the third person view as if someone other than me were wearing the goggles.@Pat: I have not yet released my code, but once I clean it up and comment it up a bit more, I plan to do so. Chances are I will not release my training set, however, as it is an aggregation of several other training sets, as acknowledged in my thesis.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165019",
"author": "criznach",
"timestamp": "2010-08-03T02:14:08",
"content": "I think you could find something comparable in size with more processing power. Have you seen the nvidia s series of devices designed for small form factor? Here are a couple that could pack some punch…http://www.newegg.com/Product/Product.aspx?Item=N82E16856110057http://www.logicsupply.com/products/ipx7a_ion330",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165020",
"author": "criznach",
"timestamp": "2010-08-03T02:15:42",
"content": "Not to play down your work in any way! It’s still awesome on the eee.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165038",
"author": "fluidic",
"timestamp": "2010-08-03T04:01:29",
"content": "Cool beans. By no means a new concept, for example, the SixthSense videos demo another take on it. But there does seem to be a distinct shortage of open-source libraries for this, OpenCV notwithstanding.The idea of running 6FPS on a VST HMD bugs me though. A VST HMD is annoying enough to wear for long periods already. 6FPS would be “good luck walking to down the hall without hurling or smashing into something” territory. If that’s all the Eee can manage, then it shouldn’t be used as the source. Yeah, it makes the system “portable”…but the result probably isn’t practically usable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165069",
"author": "pixel",
"timestamp": "2010-08-03T06:42:13",
"content": "Nice, but I’d rather have the darknet HUD glasses from Daemon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165085",
"author": "Lachlan Stuart",
"timestamp": "2010-08-03T08:43:39",
"content": "Finally having some useful augmented reality software is gonna be pretty awesome. I’ve built two wearcomps in the past and ended up dismantling both because there was an utter lack of software for them.It’s a just a shame that OpenCV’s Haar cascade classifiers are so awful. You can see in the video that every time it detects Christopher’s face, it uses a different sized window, sometimes cutting off bits of his face, etc. I’m amazed that the face recognition component works at all with such inconsistent inputs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165105",
"author": "Xb0xGuru",
"timestamp": "2010-08-03T11:15:44",
"content": "Nicely done – the fact it’s using off-the-shelf hardware makes it even sweeter!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165169",
"author": "psc",
"timestamp": "2010-08-03T15:40:01",
"content": "not sure if my little biscuit box computer is “wearable” (size, power) but i get good speed under linux with a rt-kernel.http://www.workinprogress.ca/biscuit-box-computer/pat",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165249",
"author": "Chris",
"timestamp": "2010-08-03T19:12:36",
"content": "Have you tried overclocking the Atom? Using SetFSB in windows, I can overclock my Eee 1008HA’s atom to about 1965MHz – it doesn’t sound like much, but there is a pretty noticeable performance difference. It definitely reduces battery life though. Not sure if it’s possible on the Eee 901 or if it would help that much, but I’m sure there’s a solution for Ubuntu.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165341",
"author": "Dick",
"timestamp": "2010-08-04T00:15:37",
"content": "@ChristopherWith regards to a portable CUDA solution, have you given any thought to using NVIDIA ION (http://www.nvidia.com/object/io_72770.html)?As for using FPGAs, perhaps one of these devices might be of interest if you don’t mind using ARM:http://www.embeddedarm.com/products/arm-sbc.phphttp://www.armadeus.com/english/products-processor_boards-apf27.htmlhttp://www.actel.com/products/smartfusion/default.aspx",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.615108
|
||
https://hackaday.com/2010/08/02/android-development-101-part-4advanced-databasegui-code-and-ddms/
|
Android Development 101- Part 4:Advanced Database/GUI Code And DDMS
|
Greg R. Jacobs
|
[
"Android Hacks",
"Software Development"
] |
[
"android sdk",
"code"
] |
In this tutorial we are going to cover some advanced database code as well as tie in to some more advanced GUI techniques. We left off on the
last tutorial
showing you how to insert and select data to/from the database as well as make a table. What we need now is to be able to delete data if it is not needed and update it if we entered it incorrectly. We will tie these abilities in with some more advanced functionality utilizing a long press on the screen for delete and for updating we will just press the data we want to edit.
The project we are about to dive into is from the Android Developers website called
Notepad v2
with modifications to make it geared more towards our
RandomQuotes
Project. We are using an already made example then modifying it because it covers more advanced ground on the GUI and database sides which is excellent for beginners and great for more advanced users to push on with. Since the items will be displayed to us in a ListView we can no longer entitle this project RandomQuote but will instead use EnhancedQuotes as our project name. Just to be clear, we will be creating a whole new project instead of copying another one over. Here is the required information below to make the project
Project Name:
EnhancedQuotes
Build Target:
Android 1.5
Application Name:
EnhancedQuotes
Package Name:
com.gregjacobs.enhancedquotes
Create Activity:
QuotesMain
Min SDK Version:
3
After your project is created we can start some more advanced GUI work and integrate that with some update and delete statements. At this point, I’d like to start dividing our code into different files based on the need of the application. This is important in modern programming because it allows us to stay organized and execute functions for different screens or layouts efficiently and effectively. For this project we are going to split our code into 3
.java
files and we are going to have 3 different layout files as well. We will start off with the basics by creating a new class file in our package
com.gregjacobs.enhancedquotes
called
QuotesDBAdapter
. This will contain our database code but instead of using the previous database file we created, we will start a new one. Lets look at how Google does it and see whats available other than Raw Queries from the previous tutorial.
package com.gregjacobs.enhancedquotes;
import java.util.Random;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class QuotesDBAdapter {
static Random random = new Random();
public static final String KEY_QUOTES = "quotes";
public static final String KEY_ROWID = "_id";
private static final String TAG = "QuotesDbAdapter";
private DatabaseHelper mDbHelper;
private SQLiteDatabase mDb;
/**
* Database creation sql statement
*/
private static final String DATABASE_CREATE =
"create table tblRandomQuotes (_id integer primary key autoincrement, "
+ "quotes text not null);";
private static final String DATABASE_NAME = "Random";
private static final String DATABASE_TABLE = "tblRandomQuotes";
private static final int DATABASE_VERSION = 2;
private final Context mCtx;
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(DATABASE_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS tblRandomQuotes");
onCreate(db);
}
}
/**
* Constructor - takes the context to allow the database to be
* opened/created
*
* @param ctx the Context within which to work
*/
public QuotesDBAdapter(Context ctx) {
this.mCtx = ctx;
}
public QuotesDBAdapter open() throws SQLException {
mDbHelper = new DatabaseHelper(mCtx);
mDb = mDbHelper.getWritableDatabase();
return this;
}
public void close() {
mDbHelper.close();
}
Looking at the code above, all of the imports should look familiar as well as everything leading up to this point. This is standard database code to implement in your Android applications. In the code below we start getting into separating our SQL statements into sections and using the functions that were stated in the previous post.
public long createQuote(String quotes) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_QUOTES, quotes);
return mDb.insert(DATABASE_TABLE, null, initialValues);
}
Looking at the insert statement the first variable would be the database table we are inserting into, the next variable is if we have a null set of values we would enter that here and the last is the values being inserted into the table.
public boolean deleteQuote(long rowId) {
return mDb.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}
The delete statement holds three values in its method. The first variable to enter would be the database table, the second being the where statement if there was one. In this case we will need it but for some instances you may not. The last variable is the Where statement arguments but if you included them in the previous part, that will work too. It is good to note that putting “?” in your where statement and defining them in the third variable can be done as well.
public Cursor fetchAllQuotes() {
return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_QUOTES}, null, null, null, null, null);
}
public Cursor fetchQuote(long rowId) throws SQLException {
Cursor mCursor =
mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
KEY_QUOTES}, KEY_ROWID + "=" + rowId, null,
null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
FetchAllQuotes
runs a query against the database and grabs the id and the quotes field and return all the results to a cursor. The first variable is the database table, the second is the columns the statement should return, third being the rows from the columns to return if there are any, fourth being the selection arguments, fifth is the group by SQL function, sixth is a having SQL statement, and seventh is the order by SQL function. For this we are only filling the first two and the rest can be null. The
fetchQuote
uses the same function but specifies what row its looking for.
public boolean updateQuote(long rowId, String title) {
ContentValues args = new ContentValues();
args.put(KEY_QUOTES, title);
return mDb.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}
For the update statement we still need the database name, the new variables for any given row and finally the row number in which to update.
public int getAllEntries()
{
Cursor cursor = mDb.rawQuery(
"SELECT COUNT(quotes) FROM tblRandomQuotes", null);
if(cursor.moveToFirst()) {
return cursor.getInt(0);
}
return cursor.getInt(0);
}
public String getRandomEntry()
{
int id = 1;
id = getAllEntries();
int rand = random.nextInt(id) + 1;
Cursor cursor = mDb.rawQuery(
"SELECT quotes FROM tblRandomQuotes WHERE _id = " + rand, null);
if(cursor.moveToFirst()) {
return cursor.getString(0);
}
return cursor.getString(0);
}
}
These two functions above were mentioned last post and will be used to generate a random quote on the screen using a Toast.
Next we are going to cover all of the
.xml
files starting with the
strings.xml
file. this will contain the strings for all three of our layout XML files. The code should be pretty straight forward with already having done two or three examples. The
strings.xml
is as follows:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Quotes Tracker</string>
<string name="no_quotes">No Quotes Yet</string>
<string name="menu_insert">Add Quote</string>
<string name="menu_delete">Delete Quote</string>
<string name="title">Quote:</string>
<string name="confirm">Confirm</string>
<string name="edit_quotes">Edit Quote</string>
<string name="genRan">Generate Random Quote!</string>
</resources>
After the
strings.xml
file we are going to move onto
row.xml
in the layout folder. It is not created yet so we are going to create a new XML file. We do this by right clicking on the layout folder and navigating to
New
and then to
Other…
. After this we will scroll down until we find the
XML
folder. Open it and double click on the file called
XML
. Change the name of the XML file from
NewFile.xml
to
row.xml
. The file will be created and the console may come up and present you with an error but we will fix that in a second. Now we get to the code we are going to insert into the XML file:
<?xml version="1.0" encoding="utf-8"?>
<TextView android:id="@+id/text1" xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
The source code for this layout is a label or TextView that will insert multiple times into the
main.xml
for every entry we have. We will move onto the
main.xml
to show you how this is done.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<ListView android:id="@+id/android:list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView android:id="@+id/android:empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="No Quotes!"/>
<Button
android:id="@+id/genRan"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/genRan"
/>
</LinearLayout>
We are using a
LinearLayout
above and a
ListView
and a single Label that displays “No Quotes!” if the database is empty. Even though the items in the database are shown we will want to generate one randomly and that is what the button is doing at the bottom of the ListView. We can now move onto the
edit.xml
here which a new XML file (same spot as last time) will need to be created:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/title" />
<EditText android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"/>
</LinearLayout>
<Button android:id="@+id/confirm"
android:text="@string/confirm"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
Above we have one linear layout after another and that is for a very specific reason. To be able to present a neat and clean layout we must use the first linear layout to align everything vertically and fill the parent window. After that, the second linear layout will align the textbox and label horizontally. If the two linear layouts were not present the textbox would be the size of the current screen instead of the neat one line layout we have now. Other than that, the layout is pretty is basic and there should be no trouble here.
Next we are going to create a new
.java
file in our package
com.gregjacobs.enhancedquotes
called
QuoteEdit
and it will contain code to accept any edits we may do on our items. Below is the code and comments on the important stuff you may not know, although it should look pretty familiar because we have used almost all of these functions and methods in previous posts. Here is the code for
QuoteEdit.java
:
package com.gregjacobs.enhancedquotes;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class QuoteEdit extends Activity {
private EditText mQuoteText;
private Long mRowId;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit);
mQuoteText = (EditText) findViewById(R.id.title);
Button confirmButton = (Button) findViewById(R.id.confirm);
mRowId = null;
Bundle extras = getIntent().getExtras();
if (extras != null) {
String title = extras.getString(QuotesDBAdapter.KEY_QUOTES);
mRowId = extras.getLong(QuotesDBAdapter.KEY_ROWID);
if (title != null) {
mQuoteText.setText(title);
}
}
All above is pretty standard until you get to the
Bundle extras = getIntent().getExtras();
part of the code. This code is pulling from the
QuotesMain.java
using an
Intent
. Now some beginners may be wondering what an Intent is. An Intent is a passive object to hold data that can pass between applications. In human-speak, its the glue that allows us to get information from the
QuotesMain.java
file to the
QuotesEdit.java
file efficiently and easily. Another new term would be a
Bundle
. A bundle allows use to map strings to objects such as the Intent we just talked about. So with the Bundle entitled extras, we are able to pull the data from the main
.java
file over to
QuotesEdit.java
file and vice versa.
confirmButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Bundle bundle = new Bundle();
bundle.putString(QuotesDBAdapter.KEY_QUOTES, mQuoteText.getText().toString());
if (mRowId != null) {
bundle.putLong(QuotesDBAdapter.KEY_ROWID, mRowId);
}
Intent mIntent = new Intent();
mIntent.putExtras(bundle);
setResult(RESULT_OK, mIntent);
finish();
}
});
}
}
The Bundle above will package the current text in the textbox with the original ID of the object and send it back over the
QuotesEdit.java
to the
QuotesMain.java
. We are now ready to move onto
QuotesMain.java
where we are going to pull everything we have done so far together. This code will implement the long press on items as well as utilizing the menu button on any phone to bring up an add function. Here is the code to utilize in
QuotesMain.java
:
package com.gregjacobs.enhancedquotes;
import android.app.ListActivity;
import android.view.View.OnClickListener;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ListView;
import android.widget.Button;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
import android.widget.AdapterView.AdapterContextMenuInfo;
Above we have a few new imports to be able to use the more advanced items in this project such as intents, menu’s and menuitem, listview and simplecursoradapters. These will all be explained as they come up.
public class QuotesMain extends ListActivity {
private static final int ACTIVITY_CREATE=0;
private static final int ACTIVITY_EDIT=1;
private static final int INSERT_ID = Menu.FIRST;
private static final int DELETE_ID = Menu.FIRST + 1;
private QuotesDBAdapter mDbHelper;
private Cursor mNotesCursor;
public Button button;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDbHelper = new QuotesDBAdapter(this);
mDbHelper.open();
fillData();
registerForContextMenu(getListView());
button = (Button)findViewById(R.id.genRan);
button.setOnClickListener(mAddListener);
}
We are making variables for creating, editing, inserting and deleting and making them static because they are not going to change. In the onCreate function we utilize
fillData()
which will be defined below. As well you will notice that we register the listview items in the context menu and set a listener for the button. A context menu is best described as kind of a pop-up menu and this will be utilized when we want to delete a item within the listview.
private OnClickListener mAddListener = new OnClickListener()
{
public void onClick(View v)
{
//long id1 = 0;
// do something when the button is clicked
try
{
String quote = "";
quote = mDbHelper.getRandomEntry();
Context context = getApplicationContext();
CharSequence text = quote;
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
catch (Exception ex)
{
Context context = getApplicationContext();
CharSequence text = ex.toString();
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
}
};
private void fillData() {
// Get all of the rows from the database and create the item list
mNotesCursor = mDbHelper.fetchAllQuotes();
startManagingCursor(mNotesCursor);
// Create an array to specify the fields we want to display in the list (only TITLE)
String[] from = new String[]{QuotesDBAdapter.KEY_QUOTES};
// and an array of the fields we want to bind those fields to (in this case just text1)
int[] to = new int[]{R.id.text1};
// Now create a simple cursor adapter and set it to display
SimpleCursorAdapter notes =
new SimpleCursorAdapter(this, R.layout.row, mNotesCursor, from, to);
setListAdapter(notes);
}
The button function above is exactly like the previous one that is used to generate a random quote from our list. The new method
fillData()
as mentioned above is going to be used to get all of the quotes and bind the ID and the actual quote together and add them to the listview using the
SimpleCursorAdapter
. The
SimpleCursorAdapter
is used to bind bind columns in a returned cursor to any text we place on the screen.
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, INSERT_ID,0, R.string.menu_insert);
return true;
}
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch(item.getItemId()) {
case INSERT_ID:
createNote();
return true;
}
return super.onMenuItemSelected(featureId, item);
}
In the first function above called
onCreateOptionsMenu()
we are adding the ability to add an item to the database using the menu press option that will bring up dialog asking if we would like to do this. If this completes successfully then the statement will return true. The one below it checks to see if an item has been pressed in the menu. If it has it uses a switch statement to check the value that we defined above. If it matches then we create a note which is defined below.
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.add(0, DELETE_ID, 0, R.string.menu_delete);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch(item.getItemId()) {
case DELETE_ID:
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
mDbHelper.deleteQuote(info.id);
fillData();
return true;
}
return super.onContextItemSelected(item);
}
private void createNote() {
Intent i = new Intent(this, QuoteEdit.class);
startActivityForResult(i, ACTIVITY_CREATE);
}
The function above is used to register the context menu and give the option to delete items using the menu.add function as seen above as well as here. If the context menu item Delete is pressed then the database helper will delete the quote based on the ID. The
createNote()
function uses an intent to pass the application over to the QuoteEdit file and load a new screen and when done a new intent will send the completed data back over here so we can add it to the listview.
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Cursor c = mNotesCursor;
c.moveToPosition(position);
Intent i = new Intent(this, QuoteEdit.class);
i.putExtra(QuotesDBAdapter.KEY_ROWID, id);
i.putExtra(QuotesDBAdapter.KEY_QUOTES, c.getString(
c.getColumnIndexOrThrow(QuotesDBAdapter.KEY_QUOTES)));
startActivityForResult(i, ACTIVITY_EDIT);
}
If an item from the listview is pressed the function above is loaded to initialize an intent and put the information into the intent and pull it over to the QuoteEdit class to be edited. When completed the QuoteEdit class will send the completed data back over and we can continue to add, edit or delete more items.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
Bundle extras = intent.getExtras();
switch(requestCode) {
case ACTIVITY_CREATE:
String title = extras.getString(QuotesDBAdapter.KEY_QUOTES);
mDbHelper.createQuote(title);
fillData();
break;
case ACTIVITY_EDIT:
Long rowId = extras.getLong(QuotesDBAdapter.KEY_ROWID);
if (rowId != null) {
String editTitle = extras.getString(QuotesDBAdapter.KEY_QUOTES);
mDbHelper.updateQuote(rowId, editTitle);
}
fillData();
break;
}
}
}
The method above takes the result of an activity and uses the result to utilize a specific method. The result in this case would either be creating a new quote or editing an existing one. The basis of this switch statement is to utilize the database helper and either insert data or update data within the database.
We now have one more file to go over before we could run our application on the emulator. This would be the
AndroidManifest.XML
file and that will control what is registered and what runs, it is essentially the heart of the program and we need it to recognize that we have 2 parts to our application. Here is the code for the AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.gregjacobs.enhancedquotes">
<application android:icon="@drawable/icon">
<activity android:name=".QuotesMain" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".QuoteEdit" android:label="@string/app_name"></activity>
</application>
</manifest>
If your code doesnt look like this then you will have to do some modifications to your code to talor it to this. You will notice that we have added another
Activity
to the manifest file and are giving it the same name as the one above,
app_name
. This will denote that we have another activity that we would like to use and we register it here. Also, you will notice that the
uses-sdk android:minSdkVersion=”3″
has been taken out. This is because an application does not really need it but it is always good to have. This just uses it as a reference and will use the specified build target when building your application.
The application should build and you will be able to try out the more advanced features of Android programming. The possibilities are endless with the knowledge you learn but what if your database/database code is not working?
Thats what the
Dalvick Debug Monitor Server (DDMS)
is for. When the emulator is running we are able to switch over to the DDMS by going to the top right of your screen and pressing the
>>
and then clicking on
DDMS
. If you are new to Android Development this new screen will be very confusing for you. What we are going to take out of going to the DDMS for right now is the ability to add and take from our emulator items which may be of interest. For this particular tutorial we are going to grab a database from the running emulator.
Before we get started we will need to download some software I find very useful for SQLite developers. This being
SQLite Database Browser
(SDB). This software will allow you to open SQLite databases and explore the contents, even modifying them through SQL statements. Once the file is downloaded find the folder and click on the
.exe
to start it up. Leave this program up and we will get back to it later.
To be able to put them into the SDB we need to pull them off the emulator. To do this we have to delve into the running emulator and find the database we want. It is key to remember that databases are application specific so we will need to find the package name and the database will be under a Database Folder. When in DDMS goto the devices tab and click on our emulator. then in the middle of the program should be a tab called
File Explorer
. Once File Explorer has been clicked we will now see three folders (maybe more depending on what you do with the device) called
data
,
sdcard
and
system
. We will leave
system
and
sdcard
alone for right now as we are going to use the
data
folder so open it. Once open, navigate to another folder called data and open it too. We are now presented with the package names with everything installed on our emulator. Navigate to
com.gregjacobs.enhancedquotes
and open it. Once open the two folders that appear should be
databases
and
lib
. Open databases folder and take the file called
Random
. Now to be able to take this file we are going to click on it once then navigate to the top of the tab and press the button that looks like a
floppy disc with an arrow pointing to the left
. Once this icon is clicked a dialog box will appear asking where you want to save the selected file. Choose an easy to locate place and click save.
One the file has been taken from the emulator we are going to go back to SDB and click the big open button, find our file we saved and click open. Once the file is open we are able to see the structure of the database and navigate to browse the data. to do this we are going to click on the tab called
Browse Data
and in the dropdown that says table beside it, we are going to choose
tblRandomQuotes
. The data in the table will now appear and now you know where to find your data if you ever need to modify something an put it back onto the emulator. The SDB is also good for testing out SQL queries if you are unsure of what the data returned would be. This will be an invaluable tool if you do database applications in Android.
Here are the files from my project for comparison:
AndroidManifest.xml
|
edit.xml
|
main.xml
|
QuoteEdit.java
|
QuoteMain.java
|
QuotesDBAdapter.java
|
row.xml
|
strings.xml
Now that you have an advanced understanding of some of the GUI options available to you and Database code covered in more detail in this tutorial, you are ready to start making some applications that have a little more depth than just button clicks. With the understanding you have of Intents and Bundles, you can make your programs well rounded and divide your code and layouts to match what your looking to make. If anyone has an idea that they have implemented since following this tutorial feel free to send them to me us so we can check out what you have learned. The next tutorial will cover designing the statistics tracker and using
DroidDraw
to develop some of the UI. Until the next tutorial, Happy Hacking!
Articles Used For Reference:
Google Notepad Tutorial
–
NotepadV2
Continue on to Part 5:
DroidDraw & Information Tracker Complete
| 40
| 38
|
[
{
"comment_id": "164885",
"author": "Jonas",
"timestamp": "2010-08-02T18:09:00",
"content": "“If your code doesnt look like this then you will have to do some modifications to your to talor it to this. You will notice that we have added another to the manifest an are giving it the same name as the one above, app_name. This will denote that we have another activity that we would like to use and we register it here. Also, you will notice that the has been taken out. this is because an application does not really need it but it is always good to have.”this section just caught my eye – there are at least the sentences that don’t make any sense…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164886",
"author": "Luke",
"timestamp": "2010-08-02T18:10:09",
"content": "It might be time to consider multiple page articles. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164901",
"author": "qwerty",
"timestamp": "2010-08-02T18:59:01",
"content": "It might be time to avoid software howtos. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164902",
"author": "neorazz",
"timestamp": "2010-08-02T19:00:40",
"content": "ohh can an upcoming part include barcodes and qr code ? would be a nice add on to this",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164909",
"author": "mowcius",
"timestamp": "2010-08-02T19:23:11",
"content": "Please can you make the RSS feed only show a synopsis of articles. Many other sites do it and although most articles are worth reading all the way through, I visit the site to read them, I don’t want the whole thing appearing in my RSS feed.Mowcius",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164912",
"author": "AS",
"timestamp": "2010-08-02T19:28:24",
"content": "Just came through to say the same as mowcius – it makes scrolling through an RSS feed fairly arduous when an article this long is shown in its entirety.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "164919",
"author": "Caleb Kraft",
"timestamp": "2010-08-02T19:47:39",
"content": "Sorry guys. I just changed the wordpress settings to show only a summary in the feeds. I see no difference though. We’ll figure it out.",
"parent_id": "164912",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164917",
"author": "cde",
"timestamp": "2010-08-02T19:46:59",
"content": "@ AS & Mowcius: It’s called shortcuts. I’m sure there is a “next article” key for your reader. Google Reader: J to go to next article. K to go back. Simple.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164918",
"author": "cde",
"timestamp": "2010-08-02T19:47:33",
"content": "Screw this. I’m waiting for my AppInventor invite to arrive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164954",
"author": "Thomas Langås",
"timestamp": "2010-08-02T21:51:50",
"content": "How about making two feeds, one with the short version of each article and one with the complete article as before? I enjoyed being able to read articles with google reader instead of having to click on each article. I even read articles I wouldn’t have read otherwise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164955",
"author": "r_d",
"timestamp": "2010-08-02T21:52:06",
"content": "I have an android phone and I love it (posting from it now), and I enjoy writing apps for the platform. However, this Android SDK tutorial series (and software tutorials in general) have no place on HaD. There is no shortage of information on Androis app development. This isn’t challenging, impressive, or even remotely interesting. Put simply, it lacks hack value.I sincerely hope that HaD does not continue in this direction. This content is far more appropriate for a site like Lifehacker.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164957",
"author": "Odd Rune",
"timestamp": "2010-08-02T21:56:30",
"content": "“Sorry guys. I just changed the wordpress settings to show only a summary in the feeds. I see no difference though. We’ll figure it out.”Nooo? WTF? Because two guys whined? What about the rest of us, who loved the full articles?You don’t have to use a feature just because it’s there :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "165005",
"author": "Caleb Kraft",
"timestamp": "2010-08-03T01:01:28",
"content": "@Odd Rune,It was a test run, the feed should be back to normal. Not sure how to make 2 feeds, so it will stay this way for a while.",
"parent_id": "164957",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164989",
"author": "kuronoir",
"timestamp": "2010-08-02T23:32:33",
"content": "Well, I like it.. Nice work. I’m a C# .net dev and this is helpful for explaining the diffs in the IDE as well as how android thinks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165023",
"author": "Scott",
"timestamp": "2010-08-03T02:54:19",
"content": "@r_d, qwerty and everyone else that wants to bitch about software how-to’s/ I personally enjoy the content. It’s nice to have something original here instead of just a rehash of makezine.That said, you can’t do software hacking without the tools to do so any more than you can solder with the tools and education to do that. I think a how-to solder article would be just as appropriate.Just because it teaches a generalized base skill instead of a specific hack doesn’t make it any less valid for the site.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165025",
"author": "Greg R. Jacobs",
"timestamp": "2010-08-03T02:59:01",
"content": "@Jonas – Sorry I didn’t notice it before but I had enclosing what I wrote and WordPress omitted them thinking they were functions. Here is the before and after shot of revisions:Before:If your code doesnt look like this then you will have to do some modifications to your to talor it to this. You will notice that we have added another to the manifest an are giving it the same name as the one above, app_name. This will denote that we have another activity that we would like to use and we register it here. Also, you will notice that the has been taken out. this is because an application does not really need it but it is always good to have.After:If your code doesnt look like this then you will have to do some modifications to your code to talor it to this. You will notice that we have added another Activity to the manifest file and are giving it the same name as the one above, app_name. This will denote that we have another activity that we would like to use and we register it here. Also, you will notice that the uses-sdk android:minSdkVersion=”3″ has been taken out. This is because an application does not really need it but it is always good to have.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165099",
"author": "vani",
"timestamp": "2010-08-03T10:08:49",
"content": "i tried executing the above code,i am getting java.Lang.IllegalArgumentException",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165342",
"author": "Michael",
"timestamp": "2010-08-04T00:17:28",
"content": "What’s happening with the following code? It looks like you’re returning cursor.getInt(0) whether the statement is true or false. Why have the if statement at all then?if(cursor.moveToFirst()) {return cursor.getInt(0);}return cursor.getInt(0);",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165480",
"author": "Greg R. Jacobs",
"timestamp": "2010-08-04T14:25:37",
"content": "@Michael – We use the moveToFirst() method as a precaution to move the cursor to the first row. If the cursor is already there then we wouldn’t go through the if statement. Try taking it out and see if it works and let me know :) I am always overcautious when writing code (saves me from going back later and rewriting code) but if it works without then I would see no problem doing it without the if statement :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165627",
"author": "Michael",
"timestamp": "2010-08-04T22:00:01",
"content": "I was getting errors if I deleted a quote and then clicked the “Generate Random Quote” button. The query was trying to select records where the _id no longer existed. I added a new method called getIds and changed the getRandomEntry method so that it makes a random selection from the available _id records.I’m still not sure about the if statement. This example works fine if you do this:cursor.moveToFirst();return cursor;I do think it’s a good idea to check if cursor.moveToFirst() succeeds, but I don’t know what conditions would cause it to fail or how to handle it gracefully if it does. Anyway, here are my changes:public Cursor getIds() {Cursor cursor = mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID}, null,null,null,null,null,null);cursor.moveToFirst();return cursor;}public String getRandomEntry(){Cursor aCursor = getIds();int max = aCursor.getCount();int rand = random.nextInt(max);aCursor.moveToPosition(rand);int rId = aCursor.getInt(0);Cursor cursor = mDb.rawQuery(“SELECT quotes FROM tblRandomQuotes WHERE _id = ” + rId, null);if (cursor.moveToFirst()) {return cursor.getString(0);} else {return “MoveToFirst Failed! Handle this somehow!”;}}",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166326",
"author": "Jaco",
"timestamp": "2010-08-07T00:06:15",
"content": "I’m working on an application in which I have about 110mb of text data I want to be able to provide to users of the application. I tried putting it in a json file but found that there is an ~16mb limit for my application (at least that is where the emulator barfed). Any ideas or suggestions on how to be able to display the data without running out of memory? I was partially thinking of using multiple json files and deleting old data when I need to bring in new data, but still seems like it’ll be a PITA; especially since I’ll want to do searches….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167355",
"author": "Jay Godse",
"timestamp": "2010-08-10T16:49:02",
"content": "Check out videos athttp://www.youtube.com/user/Jaynonymous1if you want to see more of what you can do with SQLite.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167958",
"author": "bfieber",
"timestamp": "2010-08-12T19:44:58",
"content": "There is a recurring bug if you delete any records, there is a chance of getting a CursorIndexOutOfBoundsException.The problem is that you use a Random number generated outside the database table to determine what record _id to select, but the autoincrement key doesn’t re-use numbers once they’ve been deleted.Therefore the higher percentage of deletes you have versus the number of records in your table, the higher chance you have of getting the error.To reproduce:Add a new Quote(first record in db _id=1)Delete that quoteAdd another new quote(only record in db _id=2)click Generate and you have a 50% chance of getting the error.Anyway, the easy fix is to replace your getRandomEntry() method with the following:public String getRandomEntry() \r\n {\r\n\r\n \tCursor cursor = mDb.rawQuery(\r\n \"SELECT quotes FROM tblRandomQuotes order by RANDOM() limit 1\", null);\r\n cursor.moveToFirst();\r\n return cursor.getString(0);\r\n }Hope this helps.-Brett",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167961",
"author": "bfieber",
"timestamp": "2010-08-12T19:50:25",
"content": "doh.. 1 bug.change that to :public String getRandomEntry() \r\n {\r\n\r\n \tCursor cursor = mDb.rawQuery(\r\n \"SELECT quotes FROM tblRandomQuotes order by RANDOM() limit 1\", null);\r\n if(cursor.moveToFirst()) {\r\n \treturn cursor.getString(0);\r\n } else {\r\n \treturn \"No Quotes to display.\";\r\n }\r\n }",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "181198",
"author": "MBiaber",
"timestamp": "2010-09-14T10:34:31",
"content": "During OnCreate the database gets created and opened but fillData calls fetchAllQuotes which causes an SQL exception“no such column: quotes: , while compiling: SELECT _id, quotes FROM tblRandomQuotes”Any help appreciated, I’ve been trying for two days to resolve this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "181237",
"author": "MBiaber",
"timestamp": "2010-09-14T14:55:40",
"content": "Got it, the first time I ran the code in the emulator I must have got far enough to create the table “quotestext” as a typo but despite correcting the typo because the table had already been created in the database it persisted and did not get over-written or replace it with the correct table “quotes” if type text.Should have dived into the SQL browser section quicker.Thanks again for the examples.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "181803",
"author": "lavino",
"timestamp": "2010-09-16T07:25:46",
"content": "2 questions:1) How do I get the delete function to work? I press menu I get add quote but how do I call the delete quote?2) If I am inside add quote and then press back (the curve arrow icon) I get an error.Am I missing something?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "194222",
"author": "matt",
"timestamp": "2010-10-10T00:53:54",
"content": "Hello, I love your tutorials thanks for doing them they are very helpful… I have completed the database tutorial, and the application works, but when I try to use DDMS with the emulator running, nothing shows up under the devices tab in DDMS, and also there is nothing in the File Explorer.There was when I first tried it but the app crashed due to a type. I was able to locate the proble in the LogCat but the device and files have disappeared, even if I restart Eclipse, the emulator, and DDMS… any suggestions? I would really like to be able to see the database structure in the tool you provided.Thanks again, any help for me is greatly appreciated!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "194224",
"author": "matt",
"timestamp": "2010-10-10T00:56:08",
"content": "Ok tried reseting the ADB and that got the emulator to show under the devices tab, but when I click on the ‘data’ folder under file explorer tab, all items vanish – seems to be buggy for some reason, any clue what to do?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "194225",
"author": "matt",
"timestamp": "2010-10-10T01:00:48",
"content": "So I keep having the same problem after resetting the adb, I can open some of the folders, but everything disappears very quicky before I can grab the database file… this message is display in the console every time:“[2010-10-09 20:58:14 – DeviceMonitor]Sending jdwp tracking request failed![2010-10-09 20:58:58 – DeviceMonitor]Adb connection Error:An existing connection was forcibly closed by the remote host[2010-10-09 20:58:59 – DeviceMonitor]Connection attempts: 1[2010-10-09 20:59:11 – DeviceMonitor]Sending jdwp tracking request failed!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "194234",
"author": "matt",
"timestamp": "2010-10-10T01:28:08",
"content": "okay… sorry to be cluttering up your comment section – I finally grabbed it, I had to add some info to the manifest file like these:and these attributes into the manifest element:android:versionCode=”1″android:versionName=”1.0″>and that seemed to buy me enough time to quicky race to the db file and pull it, but the adb still disconnected and files disappeared shortly afterwards… from reading forums I am guessing it is a problem with the manifest declarations… Not sure if you want to publish all this stuff but I just thought I’d share, so yeah, FYI…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "200481",
"author": "pade",
"timestamp": "2010-10-21T17:13:29",
"content": "Tks for post!Found and fixed 2 bugs that were causing crash:1) Cancelling (BACK button) the add quote activityprotected void onActivityResult(int requestCode, int resultCode, Intent intent) {super.onActivityResult(requestCode, resultCode, intent);if(resultCode == RESULT_CANCELED){ Log.d(“TAG”, ” Activity “+intent+ ” CANCELED!”); // quick hackreturn;}2) Delete a Quote had a problem .. db not open!public boolean onContextItemSelected(MenuItem item) {switch(item.getItemId()) {case DELETE_ID:mDbHelper.open();AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();mDbHelper.deleteQuote(info.id);fillData();return true;",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "202330",
"author": "Newb",
"timestamp": "2010-10-25T03:44:07",
"content": "So i tried out this code, and it seems theres a bug with editing a quote if it has been added since one has been deleted. It looks like the locations are not lining up. I added a quote, deleted it and then added a new one. When I go to edit the new quote, the app crashes, is this because the position says it its the first but the _id is really 2?Thanks for the help",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "202620",
"author": "Newb",
"timestamp": "2010-10-25T17:25:29",
"content": "Nevermind, found out what I was doing wrong, I moved the edit option into the context menu and wasn’t reading from the database when I wanted to edit, I was trying to use the mNotesCursor, and thats why things weren’t lining up",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "209923",
"author": "priya",
"timestamp": "2010-11-09T11:49:59",
"content": "hello,I tried this code but have some small error for below code mDbHelper.createQuote(title); this line createQuote error found so please tell mi what i am do@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent intent) {super.onActivityResult(requestCode, resultCode, intent);Bundle extras = intent.getExtras();mDbHelper.open();switch(requestCode) {case ACTIVITY_CREATE:String title = extras.getString(QuotesDBAdapter.KEY_QUOTES);mDbHelper.createQuote(title);fillData();break;case ACTIVITY_EDIT:Long rowId = extras.getLong(QuotesDBAdapter.KEY_ROWID);if (rowId != null) {String editTitle = extras.getString(QuotesDBAdapter.KEY_QUOTES);mDbHelper.updateQuote(rowId, editTitle);}fillData();break;}mDbHelper.close();}}",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "255905",
"author": "Scouris",
"timestamp": "2010-12-06T07:02:10",
"content": "Excellent work! Thanks heaps for putting this up.The code works fine for me except for one little detail. The default text ‘No Quotes!’ that is supposed to be shown when there are no quotes in the database is always showing underneath the quotes on my system.Any idea where this might have come from?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "278217",
"author": "mat88",
"timestamp": "2010-12-09T06:10:41",
"content": "I have followed all the tutorial, but when i execute on the emulator the application stop unexpectedly and i need to force close it.I did an execution with the debugger to find at wich line it’s happening.It’s happening in the fillData() function at the line:SimpleCursorAdapter notes = new SimpleCursorAdapter(this, R.layout.row, mNotesCursor, from, to);If someone have a clue for me? I really don’t understand what I did wrong.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317428",
"author": "Jeff",
"timestamp": "2011-01-29T03:17:01",
"content": "Hi,Do you have any tutorial on Google maps and gps?Thanks for the helpful tutorial.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407226",
"author": "Nick",
"timestamp": "2011-06-17T22:52:42",
"content": "Hi,Manny thnx for the tutors so far. I cant wait to continue tomorrow ^_^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "410570",
"author": "whitetiger",
"timestamp": "2011-06-27T10:12:33",
"content": "nice tutorial. but i was getting a force close for the context menu(on long press). solved it by putting mDbHelper.open(); in QuotesMain.java file in OnContextItemSelected method (before mdbhelper.deletequote).",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.703723
|
||
https://hackaday.com/2010/08/02/hardware-hack-3d-software-still-needed/
|
Hardware Hack 3D, Software Still Needed
|
Jakob Griffith
|
[
"home entertainment hacks"
] |
[
"glasses",
"hardware",
"shutter",
"softare"
] |
[youtube
http://www.youtube.com/watch?v=_k7Vc10YsDk&feature=player_embedded%5D
If you’re on the fence about 3D TV and related technologies [Anton B.] might be able to
help you decide
. No, he’s not going to shove pamphlets in your face and explain why its the wave of the future. Rather, by showing the hack-ability (its a word) of 3D shutter glasses. A simple bridge of wire across specific contacts can ‘trick’ the glasses into only displaying only the left or right picture.
Wouldn’t that make it just a regular 2D TV again? Yes, that’s the
beauty of it
. Person A could be watching a completely separate movie
pr0n
than person B, but all on the same TV. Or two people could be playing a video game, without dividing the screen in half. The only problem is the current lack of software that can interlace movies/games, who’s up for writing some C++ this weekend?
| 39
| 39
|
[
{
"comment_id": "164806",
"author": "Stephen",
"timestamp": "2010-08-02T15:08:34",
"content": "This I would buy a TV for, multiplayer games without the splitt screen! Amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164807",
"author": "@allansommer",
"timestamp": "2010-08-02T15:10:40",
"content": "isn´t it this what sony was developing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164810",
"author": "Chris",
"timestamp": "2010-08-02T15:15:07",
"content": "I think Sony got a Copyright on that. Tought I read about it in conjunction with 2 Player 2D Games.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164811",
"author": "Ian",
"timestamp": "2010-08-02T15:15:40",
"content": "Cool idea!!! This would definitely be a neat hack. Not likely I’ll be running custom software interlacing my Xbox360 input with my cable box… but potentially through a set-top computer it’d be feasible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164815",
"author": "Nathan",
"timestamp": "2010-08-02T15:27:51",
"content": "If the glasses had a Left/3d/Right toggle switch from the manufacturer, that’d be best, but I’d imagine a hardware hack on 130+$ glasses, times two, would be a bit extreme.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164817",
"author": "exsecrare",
"timestamp": "2010-08-02T15:31:41",
"content": "The whole 3D thing has not been any interest to me anyway. Being blind in one eye makes 3D (the kind that doesn’t use polarized glasses anyway) rather depressing.This hack on the other hand, could be very useful to someone like myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164821",
"author": "Andy",
"timestamp": "2010-08-02T15:42:21",
"content": "Im sure sony patented this idea with mind for playing two player games on ps3, three or four months ago it was a games console news feed i read but still great hack and has many uses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164822",
"author": "Luke",
"timestamp": "2010-08-02T15:42:26",
"content": "Neat idea but then everyone would need their own headphones too unless you want to hear crap from your roommate playing Halo while you watch No Country For Old Men. It would be cool to see this using polarized displays and glasses instead of shutter glasses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164823",
"author": "Paul",
"timestamp": "2010-08-02T15:42:29",
"content": "except that the post-processing the boxes or TV might do would be doubled, thus requiring a special TV/Box for the jobI’m sure you could write drivers for a 120 Hz computer monitor and test it there though. Probably a better place to start.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164827",
"author": "cotton509",
"timestamp": "2010-08-02T15:52:50",
"content": "I can do the software in vb.net… what refresh rate is it? but damn 2 video sources at once on a tv… That will be amazing for playing multiplayer localy just have them wear the glasses",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164828",
"author": "Nick",
"timestamp": "2010-08-02T16:00:11",
"content": "@Luke How would you overlay polarized screens without them canceling each other out? e.g. If one places a horizontally polarized screen in front of a vertically polarized screen you will only be able to see the vertically polarized screen even with horizontal glasses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164830",
"author": "joe57005",
"timestamp": "2010-08-02T16:06:26",
"content": "it will probably be cheaper to use a polarized monitor and swap the lenses in two glasses. as for software, i’m sure it can be done with ffmpeg or mplayer and a pipe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164831",
"author": "ahmad",
"timestamp": "2010-08-02T16:14:21",
"content": "That’s an amazing idea. He should patent it QUICKLY.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164834",
"author": "Iv",
"timestamp": "2010-08-02T16:24:11",
"content": "Unfortunately, the idea has already been patented by Toshiba so it is officially forbidden to have the same idea. Please stop hacking, erase your brain, and write to your MPs about the silliness of the patent system.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164835",
"author": "Greg",
"timestamp": "2010-08-02T16:25:06",
"content": "Love the idea!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164840",
"author": "gotwake424",
"timestamp": "2010-08-02T16:35:56",
"content": "ok now that they have the picture figured out.How are you going to do sound with out headphones?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164843",
"author": "Perry",
"timestamp": "2010-08-02T16:44:22",
"content": "Just so everyone knows, patents don’t matter unless your trying to sell it! but as he is meerly showing us, no one can do anything about it!Plus i like this idea seems pretty cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164844",
"author": "Me",
"timestamp": "2010-08-02T16:46:31",
"content": "Has anyone thought of the John Carpenter THEY LIVE Implications of this? I know the Times square displays are only like 20hz, but were looking at publik stego being just down the road there arent we?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164861",
"author": "Plautus",
"timestamp": "2010-08-02T17:07:34",
"content": "As someone who used to play Golden Eye and Diddy Kong Racing split-screen on a 9″ TV, this is appealing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164863",
"author": "uMinded",
"timestamp": "2010-08-02T17:11:29",
"content": "I imagine a future where we have video screen walls, the family of four is sitting on the couch together each one watching their own show. Family time…. sort of… *snif*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164866",
"author": "Osgeld",
"timestamp": "2010-08-02T17:21:50",
"content": "yea family time where everyone is commenting about different shows at the same time, then a shut-up no you shut-up argument tween the kids so dad gets pissed and drags them off to their roomsmeanwhile mom decides its a great some soda and comes back, puts on the wrong glasses and see dad was watching a pornheartwarming future : )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164874",
"author": "bothersaidpooh",
"timestamp": "2010-08-02T17:39:02",
"content": "neat hack..now can someone extend this a bit so that it works with a DLP projector, in theory this could be done with any old surplus fast LCD panel, with front polariser removed.interesting modification would be to adjust the 3-D goggles so that they switch only on one in every three frames, this way three people could use the same screen with a decrease in frame rate..you would need to adjust the goggles however, by rotating the displays so that the polarisations line up…..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164875",
"author": "floe",
"timestamp": "2010-08-02T17:42:54",
"content": "this is just beautifully simple.why? you don’t need a single line of code for this.reason: all 3d tvs are required to understand the “side-by-side” format with both views packed into a single full hd frame. you loose half of horizontal resolution, but all you have to do is arrange two media player windows next to each other and switch the tv to side-by-side. presto.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164876",
"author": "AlanKilian",
"timestamp": "2010-08-02T17:44:19",
"content": "One of the problems with systems like this is figuring out if the left-frame or the right-frame is currently being displayed. (This systems seems to know somehow. I’m not sure how.)Counting VSYNC signals and having the user select L/R is another way, but it depends on being able to produce every-other frame content exactly.I couldn’t do that on ancient Cray machines (1990s). so I invented a way to synchronize the LCD shutter glasses using a square of data embedded in the images themselves. Left images have a white square and right images have a black square. Then a photo detector placed at the front of the screen reads the image type and sets the LCD shutter glasses automatically.It looks like modern glasses are WAY WAY more sophisticated then the SEGA glasses I had to work with. Great improvement.You can read about it if you like at patent #5,245,319 “Synchronized stereoscopic display system”No, I didn’t get even $1 for this patent. The company spent all the thousands of dollars to get it patented, so I’ve got no gripe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164884",
"author": "zerth",
"timestamp": "2010-08-02T18:03:59",
"content": "Instead of headphones, just use ultrasonic interference speakers to generate localized sounds. (probably still patented and hard to actually buy)Stick LEDs on the glasses to provide visual reference for the speakers to aim at, a la Wiimote.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164895",
"author": "steaky",
"timestamp": "2010-08-02T18:41:34",
"content": "@Perry,Patents dont even matter then. They only matter if the patent holder deems it worth trying to uphold the patent.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164911",
"author": "jeditalian",
"timestamp": "2010-08-02T19:25:47",
"content": "so u take a 120hz tv, and split it into 4 individual feeds at 30hz, or do 2 at 60hz so you can play battleship multiplayer without your opponent seeing where your ships are, or play multiplayer shooting games without your opponent knowing where you are at all times, so you can truly sneak up on them/snipe. i’ll wait 6 years for it to become mainstream",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164933",
"author": "Ben Ryves",
"timestamp": "2010-08-02T20:09:04",
"content": "@AlanKilian: Interlaced scanning is one way to reliably encode left and right images. With a true interlaced signal this alternates left and right eye views on vsync. If your hardware only supports progressive scan a line blanker can be used to simulate interlaced scan.Alternatively, you can encode the left and right views one above the other and inject an additional vsync pulse half way down the screen (sync doubling).Both methods result in a loss of horizontal resolution, as opposed to alternate frame which results in a loss in frame rate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164938",
"author": "Arrangemonk",
"timestamp": "2010-08-02T20:28:35",
"content": "id say buy a 600hz monitor and do 4 player at 150 hz each :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164939",
"author": "Arrangemonk",
"timestamp": "2010-08-02T20:30:49",
"content": "edit: that way you could even do 3d at 75 hz for everyone, but means you have to render 8 times more than usual",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164950",
"author": "Rajko Stojadinovic",
"timestamp": "2010-08-02T21:28:11",
"content": "3d vision compatible players (like the one on nvidia’s site) already come with an option to load a separate left and a separate right video file… audio will only play from one of themalso, what the hell is that guy saying “remove polarizer from normal lcd display” THIS IS FOR ACTIVE SHUTTER LENSES, NOT POLARIZED DISPLAYS, also the polarized displays have a microfilm layer that polarizes every other line differently, the polarizer before and after the lcd matrix is still there…there are no 600hz monitors out and it would be impossible to make them currently anyway (other than LASER technology, no other technology makes this possible). it would also require a TON of bandwidth, more than something like quad link dvi could provide (and there is no quad link dvi)shutter glasses make the display atleast 2x darker than it normally was anyway, so this kind of “sharing” isnt very practical for more than 2 people anyway",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164978",
"author": "Hirudinea",
"timestamp": "2010-08-02T23:07:55",
"content": "In the future I see 3D TVs comming with glasses/earbud combos, two remote controls and the ability to watch two programms at once, and they will cost a shitload when they come out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164991",
"author": "Osgeld",
"timestamp": "2010-08-02T23:43:05",
"content": "let them come out, then maybe I can get a HDTV for a reasonable price",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165031",
"author": "willy",
"timestamp": "2010-08-03T03:28:56",
"content": "How exactly does the left right work?Is it basically switching the image from LEFT to RIGHT, then the glasses block either the LEFT or the RIGHT? or is it way more complex then that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165082",
"author": "PlastBox",
"timestamp": "2010-08-03T08:16:33",
"content": "@willy:That’s pretty much how shutter glasses work. One 1px black/white LCD over each eye. The glasses alternate which eye is allowed to see, while the screen displays the corresponding left/right images.Or, as the story goes, you can black out both eyes at once (alternating between two sets of glasses) and displaying player1/player2 images on the screen. Quite ingenious!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165093",
"author": "Lenin",
"timestamp": "2010-08-03T09:15:03",
"content": "mercedes are the men.their command aps (navi system with dvd+hdd) can do it in the sclass – driver got navi – copilot the dvd and trust me it´s awesome.that finally done in a normal tv… WANT WANT WANT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165186",
"author": "Mike77",
"timestamp": "2010-08-03T16:21:21",
"content": "http://fluid.media.mit.edu/people/pranav/current/thirdeye.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165754",
"author": "Wub",
"timestamp": "2010-08-05T11:19:05",
"content": "(but “it’s” is the correct word)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "174852",
"author": "permaspooked",
"timestamp": "2010-08-29T19:18:32",
"content": "Im a tech at a mercedes dealership. One of my jobs is to activate the split view feature on those s-class’s. Its really cool. 2 people can view 2 diffrent things on the same screen at the same exact time. no need for glasses either.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.8807
|
||
https://hackaday.com/2010/08/02/jailbreak-your-apple-products/
|
Jailbreak Your Apple Products
|
Jakob Griffith
|
[
"Mac Hacks",
"News"
] |
[
"apple",
"ios4",
"ipad",
"iphone",
"jailbreak"
] |
It’s finally here
, after being declared completely
legal to jailbreak
your iPhone,
JailbreakMe 2.0
is released.
Now, any and all iDevices can be jailbroken by simply visiting the URL above; however, before you start your devious adventure in the land of apps not approved by big brother Apple, there are a few issues.
The webpage is being slammed at the moment so you’ll have to wait. There is a chance the
jailbreak will not work
, and you could brick your phone. MMS and Facetime are having complications after jailbreaking. And finally, carrier unlock still needs to be done with ultrasn0w.
But beyond those small stepping stones, jailbreaking is just a touch away.
| 31
| 31
|
[
{
"comment_id": "164789",
"author": "AndrewNeo",
"timestamp": "2010-08-02T14:10:44",
"content": "Worked great on my iPod Touch 3G last night. It appears to be more a PDF exploit than Safari, which is rather interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164790",
"author": "osgeld",
"timestamp": "2010-08-02T14:11:35",
"content": "” Now, any and all iDevices can be jailbroken ”from the websiteWith PwnageTool 4.0 PwnageTool 4.01 certain devices are not supported this is because they are not supported in iOS 4.0 or they are not supported by our software. We’re working on ways to get past these restrictions.* iPhone 2G – not supported* iPod Touch – not supported* iPod Touch 3G – not supported",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164791",
"author": "Wyre",
"timestamp": "2010-08-02T14:12:12",
"content": "Update – They have supposedly worked out the issues with facetime and mms. If you have not jailbroke yet, you should be able to and everything should work now. Also if you have jailbroke and have issues with the facetime and mms, add the iphonedelivery.advinux.com repo to cydia and install the app per redmond pie. One last note, if you are having trouble accessing the jailbreakme.com, try the mirrorhttp://jailbreakme.modmyi.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164795",
"author": "JB",
"timestamp": "2010-08-02T14:31:49",
"content": "” Now, any and all iDevices can be jailbroken ”And all iDiots rejoice!! j/kSorry, couldn’t resist. Tired of all the iCrap that iSee ever iDay (not a criticism against HAD)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164798",
"author": "Fallen",
"timestamp": "2010-08-02T14:37:11",
"content": "That didn’t take long.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164802",
"author": "Buzzkill",
"timestamp": "2010-08-02T14:49:34",
"content": "@JB should crawl in an ihole ’cause it’s an iworld and we should all just be igreatful that isteve let’s us ilive in it.Jailbroke my 3G in a matter of minutes last night. Cydia sites are very slow. And i imagine it will be way worse today as word spreads and ppl get a little more confident it will probably not brick the phone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164803",
"author": "osgeld",
"timestamp": "2010-08-02T14:54:48",
"content": "ok so I got confused, the FIRST LINK IN THE ARTICLE (ahem) takes you to a different site which links you to a TOTALLY DIFFERENT software package that you DOWNLOAD as a torrentso “simply visiting the url above” (um which one you posted 3) I choose the wrong one and became confusedexcellent summary",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164805",
"author": "Daja",
"timestamp": "2010-08-02T15:02:11",
"content": "Those of you having problems where the device sits at the purple screen forever may benefit from clearing your cookies and restarting safari:1) Put your device into Airplane mode.2) Go to -> Setting -> safari -> Cookies -> Accept.3) Double Tap home button. To go to multi tasking4) Press and hold an icon to wiggle the task switcher icons and then quit Safari using the -.5) Clear all Cache and cookies.6) Open safari and go to jailbreakme.com and try again.FU*K YEAHHH",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164809",
"author": "M4CGYV3R",
"timestamp": "2010-08-02T15:14:18",
"content": "Not that I’d ever use an Apple product, but…You mean we can use our personal $600+ devices in the manner we want? You don’t say!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164816",
"author": "mike",
"timestamp": "2010-08-02T15:28:40",
"content": "Applefags know the limitations in advance, and yet they still buy them and then whine about them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164819",
"author": "qwerty",
"timestamp": "2010-08-02T15:38:48",
"content": "What’s the point in getting an iPhone, then jailbreak it other than the usual “because we can”? We wouldn’t get support or open drivers anyway because Apple hates openness. Before Android I’d probably have done the same thing, but today I wouldn’t risk bricking an expensive device to obtain the level of openness other platforms (Android, Maemo, …?) already deliver right out of the box.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164836",
"author": "JB",
"timestamp": "2010-08-02T16:26:34",
"content": "@buzzkill: get a sense of humor, kid. And no. It is not an iWorld. Plenty of choices out there for everyone without the apple logo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164838",
"author": "cantido",
"timestamp": "2010-08-02T16:27:54",
"content": "Coming soon; Iphone malware!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164841",
"author": "Rockum",
"timestamp": "2010-08-02T16:35:57",
"content": "Worked fine for my iPod touch 3g.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164869",
"author": "buzzkill",
"timestamp": "2010-08-02T17:30:41",
"content": "@qwerty – Sometimes it is not a hardware thing, but a arrogant marketing thing. Frankly, to your point, there are very few things that would make it so you would need or want to jailbreak your iphone. I have jailbroken my phone 3 or 4 times now for a particular reason or project. And then afterward restored to the regular firmware. The only things I every really wanted to do that I couldn’t was to have IM, Skype, or Pandora running in the background (fixed) and being able tether my iPad to my iPhone (no reason to not allow this other than to force me to purchase the more expensive iPad) which will be addressed with jailbreaking.@JB – Your insolence has been reported to the proper Apple authorities. This incident will go on your permanent record. You will woe this day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164881",
"author": "badfrog",
"timestamp": "2010-08-02T17:50:20",
"content": "Looks like buzzkill found a sense of humor. Bravo Zulu.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164883",
"author": "macona",
"timestamp": "2010-08-02T17:57:01",
"content": "Ill pass. All the previous jailbreaks did was make my phone unstable. The couple perks like changing the background and true multitasking are now moot…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164924",
"author": "Someone",
"timestamp": "2010-08-02T19:56:52",
"content": "See, that’s the funny thing. People keep buying locked down equipment, encouraging them to lock it down even further because it will make them more money.First it was easy to break. Then revokable signing. Then a partially gimped eFuse. We’re going to lose if this keeps up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164947",
"author": "Elene Parker",
"timestamp": "2010-08-02T21:07:13",
"content": "Ah yes, all the reason for mass paranoia on the apple front:http://www.pressdisplay.com/pressdisplay/showlink.aspx?bookmarkid=VASGNBRRWTU4&preview=article&linkid=95726135-f3a7-4e75-a6c2-41fc90f9c208&pdaffid=ZVFwBG5jk4Kvl9OaBJc5%2bg%3d%3dYiykes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164965",
"author": "Paul",
"timestamp": "2010-08-02T22:14:23",
"content": "I’m pretty sure buzzkills first comment was filled with his ihumour, at least that’s the way i read it :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164995",
"author": "JB",
"timestamp": "2010-08-02T23:52:55",
"content": "@buzzkill: noted!Goes to paint the Microsoft logo all around the house to prevent the iHitSquad from entering. It is iGarlic for iVampires!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165009",
"author": "Totti",
"timestamp": "2010-08-03T01:10:17",
"content": "I will never understand why people buy iStuff and then starting hacking it.If you disagree with Apples idea of business why you go and buy this crap.They are overpriced standard technology and many other devices have fare better specs. If you like the Apple way of business this is the only reason to stick to Apple.If you don’t like get directly an Android-based phone, which is more open already,or a Meego-based device which is even more open.Honestly, I consider every i-hack as a step in the wrong direction. As long as there are people out who still can unlock the phones and show “great hacks” they will be customers who trust that there will be a hack-solution soon for there needs.Thus, every i-hack takes away potential customers from more hack-friendly and open-source minded devices. Furthermore, it teaches other companies that the Apple way of threating customers rights might be the best way.I consider it rather counterproductive to hack i-stuff",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165261",
"author": "therian",
"timestamp": "2010-08-03T19:30:03",
"content": "did I hurt appleBoy feeling? Im sorry homey truth hurts",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165378",
"author": "Hitek146",
"timestamp": "2010-08-04T03:26:37",
"content": "Hey, I’m an open-source Linux type of guy, but Apple’s hardware is very refined, and has an incredible amount of highly polished software available for it, due to the diligence of the App Store software approval team. Along with jailbreaking, this allows an iPhone user access to very top quality hardware, while enjoying an extremely large pool of software, both approved, and non-approved. Best of both worlds, so to speak.And as for the claimed instability of operating system after jailbreaking goes, I can only say that I have never seen a single successful jailbreak(not talking about a failed attempt) that did anything to damage the stability of the OS. Outside of unlocking, I see a jailbreak as not much more than a back door to install an unapproved App, Cydia. Remove Cydia, and your phone is back like it was before. I have, however, seen many people jailbreak their phones and then install Winterboard(et al) which screws up their phone. It’s that apps that you haven’t researched beforehand screwing up the phone, not the jailbreak, itself…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165382",
"author": "Hitek146",
"timestamp": "2010-08-04T03:55:04",
"content": "“Apple’s hardware is very refined”…iPhone4 antenna issue excepted. That was unacceptable…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165413",
"author": "Wyre",
"timestamp": "2010-08-04T05:54:06",
"content": "I could care less about the antenna, I planned on buying an otterbox anyways. Like droid? Get droid, like iPhone? Get an iPhone, want a $20 prepaid cell that makes phone calls? Whatever makes you happy. But really just stop trollin or go buy an iPhone and blend it if that makes you feel better ;-).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165428",
"author": "therian",
"timestamp": "2010-08-04T06:47:31",
"content": "iPhone 4g antenna problem is hilarious, did they forget that they engineering a mobile phone ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165430",
"author": "therian",
"timestamp": "2010-08-04T07:01:14",
"content": "I just want to point out that any respectful company would callback their product if such primary functionality flaw existed but not Apple since they know you an addict suckers will hold phone upside",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165725",
"author": "wdfowty",
"timestamp": "2010-08-05T07:54:13",
"content": "If you visit jailbreakme.com on an android device, like the Nexus One, it will tell you that your software is too old, and to upgrade. I found that funny ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165848",
"author": "Piku",
"timestamp": "2010-08-05T17:15:28",
"content": "Worked fine on my 1st Gen iPod Touch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167486",
"author": "Chris",
"timestamp": "2010-08-11T05:26:08",
"content": "This has made jail breaking so much easier.I did a lot of iPhones that I had been too lazy to do the day this came out (well a few days after) It was really well timed so a few days after I got my iPhone4 it was out, and supported.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.768968
|
||
https://hackaday.com/2010/08/02/doorbell-combo-lock-can-open-your-garage-door/
|
Doorbell Combo Lock Can Open Your Garage Door
|
Mike Szczys
|
[
"home hacks"
] |
[
"alan parekh",
"attiny13 atmega168",
"combination",
"doorbell",
"garage door",
"relay"
] |
Sometimes I get enough away from writing about other people’s accomplishments long enough to actually do my own hacks. Most recently I developed
a combination lock that opens the garage door
. The idea isn’t original, it is based on [Alan Parekh’s]
button code
project, but I did develop my own hardware and software. A four digit code is entered by pressing the button a number of times for the first digit, and waiting for a flash of an LED inside before moving on to the next digit. If the correct code is entered the door opens.
My version centers around an ATtiny13. I originally downloaded [Alan’s] code in hopes that I could port the PIC firmware over pretty easily. Unfortunately it was written in BASIC so I just took what I knew about the interface and wrote my own program. I developed on an ATmega168 so that I would have no trouble running out of programming space, and was able to optimize my code down to 964 bytes to fit on the tiny13.
The hardware is quite simple. I purchased a lighted doorbell from Home Depot and swapped out the light bulb for an LED. I choose this because the doorbell mounts in a 5/8″ hole in the trim of the garage door and is easily overlooked. I’m quite happy with the results, and if you want to play around with the idea, you can easily build the circuit on a breadboard and use another LED for the load rather than including a relay. Hit the link at the top of this post for the schematic, code, and build images.
| 24
| 20
|
[
{
"comment_id": "164770",
"author": "Winston",
"timestamp": "2010-08-02T13:17:01",
"content": "Nice & unobtrusive looking, but how long does it actually take you to enter the code to open the door, compared to a traditional key-code system?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "164776",
"author": "Mike Szczys",
"timestamp": "2010-08-02T13:27:03",
"content": "@Winston: right now I have he entry timeout set for 1.5 seconds which might be a bit long. The confirmation blinks are 600ms. So, it would be four timeouts and four blinks: 8.4 seconds plus the time it takes you to press the button for each digit.I don’t use it too much so it doesn’t bother me to take 15 seconds to get in the garage.@Diego: There’s a switch next to the voltage regulator to cut the power to the board. But we also always lock the door into the house from the garage and when we leave town we unplug the garage door opener.@Osgeld: Don’t sound surprised, I know what I’m doing.",
"parent_id": "164770",
"depth": 2,
"replies": []
},
{
"comment_id": "164782",
"author": "McGuiver",
"timestamp": "2010-08-02T13:43:15",
"content": "I agree this is a good design. Very simple. I think I would have used a Morse Code sequence instead of 255 available codes per digit. It seems pressing the button 100 times if your code was that for a full digit is a little time consuming.I would just have a string of Morse Code. (ex. SOS) … — …The code is pretty clean. But having to press a button about 400 times would piss my button pushing finger off. I also would not give feedback letting you know it was the right code. Have a default press like 10 sec to let the system know your starting. All other inputs before this initialization would be ignored. After the correct code, the door opens. Then it looks & acts almost like a doorbell.",
"parent_id": "164770",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164774",
"author": "diego",
"timestamp": "2010-08-02T13:25:45",
"content": "this doesn’t help my fear of leave my home on its own for three weeks…d",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164775",
"author": "osgeld",
"timestamp": "2010-08-02T13:25:47",
"content": "hey mike made something, cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164779",
"author": "kichimi",
"timestamp": "2010-08-02T13:39:28",
"content": "The real question here is, would you be able to operate it whilst drunk?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164780",
"author": "Garret",
"timestamp": "2010-08-02T13:39:46",
"content": "GREAT SUCCESS!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164784",
"author": "Anonymous",
"timestamp": "2010-08-02T13:49:57",
"content": "I would have made it react to rhythmic tapping. “La Bamba” opens the garage door, “Louie, Louie” turns the light by the door on or off, “Shave and a Haircut” opens the trap door under the welcome mat…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164785",
"author": "diego",
"timestamp": "2010-08-02T13:50:49",
"content": "@Mike: I meant: these days I’m reading a lot about house protection systems, and my house is really defenceless so this increments my anxiety about thieves :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164786",
"author": "fartface",
"timestamp": "2010-08-02T13:55:42",
"content": "This does not work for any new garage door openers. All the new ones, in order to piss off the home owners, use a special serial communication over the damned wires. you no longer have a contact closure you can use to trigger the door. makes us integrators upset that idiot companies like Genie made it hard for us to integrate the garage door opener for customers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164787",
"author": "k-ww",
"timestamp": "2010-08-02T14:00:04",
"content": "diego:Just add another function – 3 incorrect attempts, and it calls the police or a neighbor –pulse dialing is easy, and the message chip from a recordable greeting card would do the trick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164793",
"author": "Zach",
"timestamp": "2010-08-02T14:14:10",
"content": "There is a retarded kid in my neighborhood, and he rings the doorbell multiple times. If I had this I would always be afraid that he would get it right some time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164796",
"author": "Gottabethatguy",
"timestamp": "2010-08-02T14:35:00",
"content": "@diego, you realize locks and most security systems do nothing to stop people who really want to get in right? Locks only work on honest people and stupid thieves.Mike, nice job.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "535769",
"author": "Christopher",
"timestamp": "2011-12-14T21:19:01",
"content": "Well said. I’ve always been taught the same.",
"parent_id": "164796",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164797",
"author": "Fallen",
"timestamp": "2010-08-02T14:35:36",
"content": "Great hack. Quite elegant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164800",
"author": "Winston",
"timestamp": "2010-08-02T14:43:16",
"content": "@Mike: Thanks for info. ~15s is quite long, but I doubt that’s as much of an inconvenience as going to get the key and putting it back afterwards.@McGuiver: Rather than proper Morse, I’d be tempted to go for just a certain combination of short and long taps. The number of possible combinations being 2 ^ number of taps. 1000 combinations from 10 taps with no need to wait between tapping them isn’t to be sniffed at, though I guess it wouldn’t be long until HAD featured an arduino and linear actuator “manual button-pressing brute force cracker” project.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "164808",
"author": "McGuiver",
"timestamp": "2010-08-02T15:12:21",
"content": "That’s more what I was thinking. I can always remember Morse code though.Being in the security business, I would want to debug this thing very well. I wouldn’t want it crashing or something and having the garage door open. I thought about doing something similar in the past with one of my Axis 241-Q (video encoder) outputs. Tie one of the outputs to a ttl relay, then have the relay control the opener. Then I could VPN in from my iPhone and hit the output. You just never know how a malfunction can trigger something wierd. I love the idea, and he was very motivated. Great little project.",
"parent_id": "164800",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164801",
"author": "amishx64",
"timestamp": "2010-08-02T14:45:36",
"content": "Very nice Mike! I like k-ww’s idea – but maybe just have it take a pic and send it to your phone so you can decide what to do from there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164870",
"author": "Waylan",
"timestamp": "2010-08-02T17:31:29",
"content": "Very interesting. It’s be cool to set it up so that a single push gets passed on and the door bell actually rings. Of course, when a code is being entered (i.e. a second push before the timeout), any signal to the door bell should be intercepted. Wouldn’t want the neighbors hearing the code.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164872",
"author": "fastjunk",
"timestamp": "2010-08-02T17:38:06",
"content": "Great hack with lots of details and info.Props to you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164920",
"author": "davo",
"timestamp": "2010-08-02T19:48:21",
"content": "i think its quite cool :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165068",
"author": "aw",
"timestamp": "2010-08-03T06:22:33",
"content": "Random idea, what if you made the door bell set off a buzzer when held. That way it will seem like a normal doorbell but a series of quick button presses will unlock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165089",
"author": "strider_mt2k",
"timestamp": "2010-08-03T08:58:06",
"content": "Man if I had to pee really bad this would be difficult. ;)In all seriousness, I think it’s quite clever and elegant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165109",
"author": "Jeff",
"timestamp": "2010-08-03T11:37:39",
"content": "Cool. Now make it so it will automatically close my garage at 11:00-midnight for when i forget to.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,397.998287
|
||
https://hackaday.com/2010/08/01/update-custom-cellphone-induction-charging/
|
Update: Custom Cellphone Induction Charging
|
Mike Szczys
|
[
"Cellphone Hacks"
] |
[
"bondo",
"case",
"charger",
"hd2",
"htc",
"inductive"
] |
This is a
custom back plate with induction charging circuitry
that [Derek Hughes] build for his HTC HD2 cellphone. When we checked in with him last week he showed us
how to add an inductive charger without voiding the warranty
but it wasn’t very pretty because the stock back plate blocked the inductive field and couldn’t be used. The solution he came up with will work with any device if you want to put some time into the build.
He took two different aftermarket cases; one fits his cellphone and the other is a BlackBerry case meant for housing a credit card. After cutting a hole in the back of the cellphone case he epoxied the credit card holder in place, smoothed the seam with Bondo, and repainted. Not only does the charger fit in the credit card case, but there’s still room for a credit card. [Derek] also measured the magnetic fields around the circuitry and found they will not damage the magnetic strip on that
American Express Black
you’ve been keeping on you. In the video after the break he mentions the last step in finishing this case will be to locate a 90-degree USB plug as the current connector is a bit of an eyesore.
[youtube=http://www.youtube.com/watch?v=DgNOqJBSKmQ]
| 12
| 12
|
[
{
"comment_id": "164595",
"author": "D_",
"timestamp": "2010-08-01T21:09:13",
"content": "Well Derek has an ongoing process to perfect his hack. In event he does or doesn’t find a 90 degree connector he will have to again to make another case, or mod this one. With finding a connector it will still be an obtrusion. Without find a connector he will have to hack is own solution for the connection, that most likely be an obtrusion as well. Both will require a case mod to protect the connection, while a slight bump most likely will remain, but shouldn’t pose any hassle. No doubt Derek will get this to close as perfect as possible. In the video Derek didn’t say he actually measured the fields around the device, but said his research revealed they shouldn’t be high enough to pose a threat to card magnetic stripes. One of those things that everyone has to decide their own comfort level",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164603",
"author": "Moggie100",
"timestamp": "2010-08-01T22:00:20",
"content": "The general purpose charge kits from the carphone warehouse have usb adapter stubs with plastic covers that snap off, exposing a nicely accessible plug to match your phone.Might be an option for making a nice minimal connector for this kind of project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164613",
"author": "Xtremegamer",
"timestamp": "2010-08-01T23:10:33",
"content": "why not try a little piece of pcb and a flex cable ?that way you can glue the pcb with flex cable into the case and you just have to insert the phone butt first.,GreetzXtremegamer",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164624",
"author": "XDS",
"timestamp": "2010-08-02T00:52:11",
"content": "Its a start",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164626",
"author": "Vonskippy",
"timestamp": "2010-08-02T00:55:24",
"content": "Seems like alot of work to avoid plugging in a cable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164630",
"author": "???",
"timestamp": "2010-08-02T01:12:05",
"content": "not really, microusb on phones are the first thing that goes out (other than breaking the lcd or water damage).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164652",
"author": "JohnSmith",
"timestamp": "2010-08-02T02:43:44",
"content": "@Vonskippy – well yeah, it’s a lot more work. But it’s also a lot more fun!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164696",
"author": "Jason",
"timestamp": "2010-08-02T07:08:40",
"content": "paid link much.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165150",
"author": "Hacksaw",
"timestamp": "2010-08-03T14:38:35",
"content": "Am I the only person who doesn’t see what the big deal with plugging in your phone? ??? says microusb is the first thing to go out but oddly enough I’ve never seen or heard of one. The idea of not plugging it in is cool but you’re still going to plug it in in the car",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165285",
"author": "Eric",
"timestamp": "2010-08-03T20:41:16",
"content": "I just saw these backplates on clearance at Radio Shack for $5.97 so I bought two and I’m half way to a touchstone charging Vibrant. The touchstone unfortunately was full price. Just have to figure out a better way to handle the usb plug. Everything fits fine underneath the Vibrant’s backplate (w/o modification) and it does charge when I jumper it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165628",
"author": "Synchros",
"timestamp": "2010-08-04T22:09:35",
"content": "In this case design, you could improve your FM reception by attaching a few inches of wire to a right-angle 3.5mm headset connector (just embed the wire up the side of the case material).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168638",
"author": "Raymundo Bunn",
"timestamp": "2010-08-14T20:15:47",
"content": "Sure I want the weather at the home srceen with information updates, sure I would like contacts visable at any given time, I desire a educate app, a flight app, a road congestion status app and yes I need a phone in an effort to reply to my every command and not grasp/freeze or shutdown like my present Nokia E72 or my previous Blackberry Bold.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.115338
|
||
https://hackaday.com/2010/08/01/hackaday-links-august-1-2010/
|
Hackaday Links: August 1, 2010
|
Mike Szczys
|
[
"Hackaday links"
] |
[
"mame",
"pcb",
"wedding cake"
] |
PCB Group Orders
[Phil] wrote in to let us know about the
DorkbotPDX group orders
. The site makes group PCB orders until a cutoff date or the panel is full. You get three copies of your design with no setup fee for just $5/square inch including domestic postage. Not a bad price. We aren’t affiliated with them, but we’re always looking for board production options for hobbyists.
BatchPCB
is another popular one, and if you need
help getting your design ready
we’ve got your covered.
Aspire One MAME cabinet
[Tim]
built a MAME cabinet
using foam board and some USB peripherals. Inside you’ll find an Acer Aspire One netbook. This build is quick, cheap, and if you get tired of it you won’t feel you’re stuck with it in the way
owners of other MAME cabinet builds
might.
Embedded Cake
If you are an embedded programmer who happens to be marrying another embedded programmer take note.
This wedding cake
is perfect for you; decorated with character LCD screens, solderless breadboards, and development boards along with the wires that connect them all together. [Francirius], a read from Chile, says this cake was the handy work of [Paulina Verdejo].
| 25
| 25
|
[
{
"comment_id": "164555",
"author": "Tachikoma",
"timestamp": "2010-08-01T18:12:08",
"content": "The resistors on the cake is cute :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164557",
"author": "ChalkBored",
"timestamp": "2010-08-01T18:14:41",
"content": "The mini MAME cabinet was on here 10 days ago.http://hackaday.com/2010/07/22/all-thats-needed-is-a-retro-paintjob-minimame/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164565",
"author": "Sean",
"timestamp": "2010-08-01T18:47:51",
"content": "The $5 per square inch is somewhat misleading:“t’s $5 per square inch for three copies of your design. So, a 2 square inch design would cost $10, and you’ll get three copies of your board.”So its $5 for 3 square inches as best I can figure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164568",
"author": "The Cageybee",
"timestamp": "2010-08-01T19:06:06",
"content": "Anyone know of similar services to batchPCB/dorkbot in the UK?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164591",
"author": "Hirudinea",
"timestamp": "2010-08-01T20:32:57",
"content": "What is this Hackaday or Cake Boss?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164601",
"author": "Daniel",
"timestamp": "2010-08-01T21:46:34",
"content": "I just emailed my first order off to the Dorkbot group order.I’ll report back some photos, etc once I get the boards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164604",
"author": "Spork",
"timestamp": "2010-08-01T22:32:41",
"content": "Dorkbot and BatchPCB are GREAT for your small boards, like the 1″ x 2″ board they show on the dorkbot site, but it is not as good when you need to do a larger size board. I have a 5.25″x3.4″ board that would be about $90 to print, which is the same price as a board house would charge and with a much longer lead time. (board house gets it out in 4 days)So my small projects will go to them, anything larger than a few inches and I’ll stick with my board house.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164612",
"author": "omegacs",
"timestamp": "2010-08-01T23:07:24",
"content": "I’m submitting around 100 square inches to this month’s Dorkbot order, and have used every one of the last 3 or 4. Without the group order the product I’m developing would be in much poorer shape. For a while the group order was going out every 2 weeks, with a 1 week turnaround. Copper costs went up recently, so it’s back down to 1 per month, and the turnaround is up to about 9-10 days, but both of those could change for the better if there’s more usage. I’d love to see a full panel or more go out every week, and enough interest to start a 4-layer order as well.Part of this month’s order is even a small production run of an existing product. I’m getting 99 PCBs for about $350, which is around the same price as 25 boards directly from the fab.I’ve got some pics on my blog, for instance .",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164614",
"author": "kernelcode",
"timestamp": "2010-08-01T23:23:40",
"content": "I was worried about people getting some form of heavy metal poisoning from that cake until I looked at the full size picture. That thing’s awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164629",
"author": "jwscholar",
"timestamp": "2010-08-02T01:03:47",
"content": "Is that cake RoHS-certified? ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164642",
"author": "minimike",
"timestamp": "2010-08-02T01:57:16",
"content": "I’ve just spent 2-3 weeks of trial and error (on my part) so that I can get my PCBs from Dorkbot. The service I have got so far is outstanding.I’m not in the USA but from Australia and even so I should get the boards in about 2 weeks and I cant wait !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164656",
"author": "Spork",
"timestamp": "2010-08-02T03:15:18",
"content": "@omegacsI wasn’t trying to bash, I was just saying that for a small board run (5-10 boards) of a larger square inch size, it’s cheaper to go with my fab.That said, I will be putting together an order for dorkbot later this week for some smaller boards that I have yet to have fabbed.CheersSpork",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164659",
"author": "omegacs",
"timestamp": "2010-08-02T04:02:41",
"content": "@SporkI know you weren’t bashing, I was just providing another example of how useful the order’s been for me. Out of curiosity, what board house does that pricing come from? I have some boards of my own that are on the same side of the size/price crossover point. (the production example I gave was for a 1.5″ round board…)Just be aware that the next order deadline is Monday at 8am, which is less than 11hrs from now. Unless interest in the group order upticks significantly from this post, that means you’ve got another month to wait for the next round ;-(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164660",
"author": "Edward",
"timestamp": "2010-08-02T04:04:13",
"content": "I love these posts and always get a little bit excited when I see the latest one and start reading.Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164669",
"author": "Spork",
"timestamp": "2010-08-02T04:39:16",
"content": "I usually use 4pcb.com or pcb4u.com. I can *usually* get 5-10 larger boards through them for the same price as I could from one of the group orders. Also with some of my boards cost is secondary to speed, so I may spend a little extra on a smaller board for the fast turn around.Unfortunately I don’t know that I’ll make the cutoff, thanks for the heads up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164670",
"author": "omegacs",
"timestamp": "2010-08-02T04:57:22",
"content": "My orders so far have almost all been prototype, so 3 copies is perfect. 4pcb is my default house otherwise, they just can’t generally beat the group order for low volume. OTOH that production order was close between 4pcb and the group order for that quantity, but even then they lost out. My current product however will certainly be run conventionally, as it should be in the 1000’s rather than 10’s of units at a time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164773",
"author": "Xb0xGuru",
"timestamp": "2010-08-02T13:24:26",
"content": "Traditionally, a wedding cake’s top tier would be fruit, so how many currants can we expect this to be?[bah-dum, tsh!]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164777",
"author": "Xb0xGuru",
"timestamp": "2010-08-02T13:34:00",
"content": "Oops – I meant “What currant is it using?”Joke FAIL!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164788",
"author": "exastify",
"timestamp": "2010-08-02T14:09:51",
"content": "The guy behind Dorkbot is currently losing money on his PCB system for small boards (<6 inches). So far he has lost money for the last few runs. If you want the service to continue, order more than 6 inches of PCB!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164818",
"author": "Laen",
"timestamp": "2010-08-02T15:32:03",
"content": "exastify: No wait! The order is _designed_ for small orders. No one should feel like they have to order more board than they need.Under about 1 square inch I technically lose money on an individual order (since the envelope and postage usually run about $2.50), but that’s REALLY not a problem. The average order size is around 6 square inches (usually across multiple boards), and as long as I don’t lose money on the entire order, I’m more than happy to lose money on any individual order.So please! Keep sending in those small boards! That’s why I _started_ this service.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164826",
"author": "Alex Holsgrove",
"timestamp": "2010-08-02T15:46:03",
"content": "Does anyone know of a good UK PCB manufacturer? I want to get a few more complex boards made but don’t want to have to wait a few weeks to get them made abroad – not to mention it probably costs a lot more to ship from the US -> UK. Thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164910",
"author": "Philip",
"timestamp": "2010-08-02T19:24:23",
"content": "Alex, be prepared to pay 2-3 times the price as a US/China fab house. I’ve used Gold Phoenix a few times and I usually have them within about 12-13 days.I looked at having some protos done here, it was around the same cost as a full run from GoldPhoenix.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164949",
"author": "omegacs",
"timestamp": "2010-08-02T21:26:20",
"content": "For those of you who may still have designs pending, this order overfilled, so he’s running a second panel in the next couple days. If you get your design in today, you may fit on that second panel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165066",
"author": "Spork",
"timestamp": "2010-08-03T06:16:25",
"content": "I managed to get mine in and I’m looking forward to seeing the finished product.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168025",
"author": "Spork",
"timestamp": "2010-08-13T00:06:56",
"content": "Boards shipped out today. I have to say I’m quite impressed so far 8 business days is something to be proud of for one guy handling all the orders.I’ll post pictures when they arrive, plus I’m getting in on the next board, already have half my schematic done.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.177719
|
||
https://hackaday.com/2010/08/05/pcb-trace-antenna/
|
PCB Trace Antenna
|
Jakob Griffith
|
[
"Wireless Hacks"
] |
[
"2.4ghz",
"antenna",
"cantenna",
"design",
"pcb",
"trace"
] |
If you’re working on a device that includes RF wireless, [Colin’s]
Guide to PCB Trace Antenna Design
might clear some headaches when
sending off for PCBs
. While it is directed at devices transmitting at 2.4GHz, the techniques and recommended equipment (read:
espresso
smith charts and network analyzers) should work for almost any frequency. While trace antennas aren’t as easy to implement as a measured wire, the space benefits make up for the difficulty. Unless you don’t mind how larger your project is, did someone say
cantenna
?
| 19
| 18
|
[
{
"comment_id": "165767",
"author": "h3llphyre",
"timestamp": "2010-08-05T13:10:00",
"content": "I don’t consider “follow the datasheet’s layout” and “acquire and use a $50,000 piece of equipment” to be Hackaday worthy.It would have been more interesting for the author to point out how “close enough” may indeed be “close enough” for a personal project, rather than pointing out the obvious.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165768",
"author": "osgeld",
"timestamp": "2010-08-05T13:22:49",
"content": "cantenna’s btw are a brand name for heathkit dummy loads BTW",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165774",
"author": "JohnSmith",
"timestamp": "2010-08-05T14:15:56",
"content": "Cantennas (plural, not possessive) are also what most people call an antenna made from a can. It’s hard to believe, I know, but you can normally figure out which one people are talking about from the context.For the Spectrum analyser, you can fake it with a signal generator and a scope. You probably won’t get above 100Mhz with hobby level equipment, but it can still be invaluable.And I wish I could burn every smith chart in the world. So much pain.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165787",
"author": "JohnSmith",
"timestamp": "2010-08-05T15:02:19",
"content": "Nah, the other is a fake antenna used by ham radio operators to test their equipment. 50ohm load you can dissipate a few hundred watts in. It’s just not very common. I think I’ve seen it talked about twice, one here and one in a discussion about wifi boosting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165806",
"author": "M4CGYV3R",
"timestamp": "2010-08-05T15:31:20",
"content": "Pringles cantennas are great for just about anything in the 2.4GHz spectrum, but they’re super directional if I’m not mistaken.I suppose that would work for most things if you know where your receiver will be specifically, or if you can oscillate/scan the cantenna.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165811",
"author": "dext0rb",
"timestamp": "2010-08-05T15:36:30",
"content": "well i read the article, and thought it was alright. pretty much stuff you would have covered in a very basic undergrad EE course.…and for one glorious moment, i did think of heathkit dummy loads and then i touched myself gratuitously.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165821",
"author": "JohnSmith",
"timestamp": "2010-08-05T15:57:30",
"content": "Nooo! How will I calibrate my radio now?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165845",
"author": "Ren",
"timestamp": "2010-08-05T17:03:23",
"content": "Speaking of trade marks, have you heard from Smith’s lawyers yet? IIRC, he was a stickler for royalties regarding “Sm*th Ch*rts”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165895",
"author": "Matt",
"timestamp": "2010-08-05T18:39:34",
"content": "@h3llphyre: You don’t need a $50,000 network analyzer for this. You could get a brand-new low end Anritsu with calibration kit for about $10,000 which can easily handle an antenna VSWR measurement. You can probably get an old used HP VNA with cal kit for a bit more. MetricTest and TestEquity (where the author got his) are where I look for refurbished equipment.I haven’t priced it out, but if you can pick up/make a cheap power meter or spectrum analyzer, then you can get a signal generator and directional coupler or circulator to do the same measurement, and I bet you could do it even cheaper. It would be a much more manual measurement unless you automate the sweep with your computer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165896",
"author": "Matt",
"timestamp": "2010-08-05T18:42:45",
"content": "One more comment: can hackaday moderate the comments, or maybe implement some slashdot-style user comment moderation? I was hoping to read some good comments in this thread but had to wade through some garbage first…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "165901",
"author": "Caleb Kraft",
"timestamp": "2010-08-05T18:47:27",
"content": "@Matt,We delete a lot of stuff that is offensive and waaay off topic. Usually we try to leave arguments alone hoping they will fizzle out. If someone consistently insist on being a pain, we ban them. It sucks. I know I would rather people just behave like civilized adults.",
"parent_id": "165896",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "165907",
"author": "Brett",
"timestamp": "2010-08-05T18:54:53",
"content": "The word cantenna has been used on this blog dozens of times. What’s with this osgeld guy? Just constant complaining – relax, be happy. There is more to life than HackADay articles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165918",
"author": "Pilotgeek",
"timestamp": "2010-08-05T19:13:15",
"content": "There are like, 80% less comments on this page than this morning. Censor a Day!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165942",
"author": "Charper",
"timestamp": "2010-08-05T20:54:14",
"content": "@Matt, CalebYeah, sorry for derailing this thread further…I suggested slashdot-style community moderation and voting for comments in their last questionnaire/feedback request. As Had grows, it’s going to become more and more needed.On topic:The method used here makes me cringe. It’s an unusual combination of professional and hackish. However, if the money and equipment is available, I suppose it works and isn’t really a bad way to go.For the 2.4 GHz spectrum on a PCB you may want to look into patch antennas instead. There’s plenty of tutorials and articles available on the internet, and the approximated equations are stupid simple to work with.Also, although I’ve used prettymuch this exact method to tune an antenna, I have never used a network analyzer. Instead, try a spectrum analyzer. They’re equally expensive, but in my experience much more common. Make a simple wire antenna (or use a loop probe) and tape it down somewhere a reasonable distance (far field) from your transmitter. Set your scan in a narrow range around your broadcast frequency and adjust your PCB antenna for the highest signal strength.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165991",
"author": "Matt",
"timestamp": "2010-08-06T00:05:12",
"content": "@Charper:I’ve used a network analyzer for tuning antennas like described in the article, but our lab actually had more network analyzers than spectrum analyzers. It is important to consider a gain maximizing method like you describe, because antennas can have their gain peak and VSWR minimum at different frequencies.I think the trace antennas are popular in consumer electronics because they are going to be smaller than the equivalent patch antenna and they have a more omnidirectional gain pattern. A patch antenna usually by design radiates predominantly in one hemisphere. When I’ve opened up stuff like wireless mouses and game controllers I’ve always seen trace antennas rather than patch antennas, often a J-shaped trace with a pi matching circuit at the feed point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166011",
"author": "Colin",
"timestamp": "2010-08-06T01:26:44",
"content": "@Charper, @MattA patch antenna was too big for this application. In addition, as Matt mentioned, the directionality wasn’t what we were looking for.Professional + Hackish is kind of what I was going for. However, I disagree about rather having a spectrum analyzer. A network analyzer will not only tell you what your performance is but it will give details on how to improve it.It would be nice to use both a network analyzer and a spectrum analyzer, but I don’t think you need both. We did have access to a spectrum analyzer during FCC testing, and that was pretty interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166016",
"author": "charper",
"timestamp": "2010-08-06T01:54:14",
"content": "@ColinCool. Yeah, I didn’t necessarily mean that the spectrum analyzer was any better – just that I thought they were more common. You’re definitely right about the feedback on how to improve it. It’s easy to over-compensate with the spectrum analyzer since you have no real feedback about how close to optimal you’re at.However, another advantage I didn’t think of earlier to the spectrum analyzer is keeping your test equipment interference to a minimum. You can put the unit under test in it’s actual operating condition and test it at a distance with no interference.You’re right about the gain/VSWR optimums being different. I’ll have to look into it a bit further before I’m sure of this statement, but I believe if you’re in the ballpark on matching then your peak gain/ minimum VSWR aren’t going to be far enough off to hurt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166018",
"author": "charper",
"timestamp": "2010-08-06T01:56:18",
"content": "@ColinP.S. Thanks for not taking offense to my previous statement: “The method used here makes me cringe. It’s an unusual combination of professional and hackish.” :) Looking back it came off a lot worse than I meant it. All in all great stuff, and thanks for sharing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1229734",
"author": "CorrosiveOne",
"timestamp": "2014-03-01T01:43:06",
"content": "The first thing I do with a device is rip out the crappy trace antenna and put in a real wire one.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.068466
|
||
https://hackaday.com/2010/08/04/wine-cask-sensor-suite/
|
Wine Cask Sensor Suite
|
Mike Szczys
|
[
"chemistry hacks"
] |
[
"alcohol",
"arduino",
"co2",
"pH",
"sensor",
"suite",
"temperature",
"vinification",
"winemaking"
] |
As part of his Master’s dissertation [Salvador Faria] built
a sensor suite for wine monitoring
. He needed to develop a method of tracking data inside the wine cask during the vinification process. What he came up with eclipses the
wine cellar temperature monitors
we’ve seen before.
He picked up pH, temperature, carbon dioxide, alcohol, and relative humidity sensors from familiar vendors like Seeed, Parallax, and SparkFun. His original idea was to develop a floating probe that housed the entire package but he had quite a bit of trouble getting everything inside
and
maintaining buoyancy. The solution was a two-part probe; the stationary portion seen mounted on top of the cask houses the microcontroller, RF 433 MHz transmitter, and the gas sensors. Tethered to that is a floating probe that measures pH and temperature. Data is sent over radio frequency to an HTTP POST server every minute.
| 15
| 15
|
[
{
"comment_id": "165594",
"author": "Brad Hein",
"timestamp": "2010-08-04T20:21:49",
"content": "In 2010 Skynet took over. Then they got drunk on wine and the humans took control back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165625",
"author": "Reaper",
"timestamp": "2010-08-04T21:57:26",
"content": "Impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165629",
"author": "don",
"timestamp": "2010-08-04T22:10:32",
"content": "Oh man. This is the start of a great thing.It just need to be used for beer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165636",
"author": "Elias",
"timestamp": "2010-08-04T22:34:44",
"content": "If he is going to submerge that rusted shit above the PH probe, as seen here:http://middlewaresensing.files.wordpress.com/2010/08/100802220003.png, I’m pretty sure the wine will not be good for human consumption.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165640",
"author": "Matt",
"timestamp": "2010-08-04T22:50:02",
"content": "@Elias,My guess is this is a working prototype, and the final version will be milled out of 18/8 or something similar that wont add off flavors… Good point there though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165641",
"author": "Patrick (not the right-wing one)",
"timestamp": "2010-08-04T22:53:34",
"content": "Elias: The outside can be rusty and the inside may still be pristine. It all depends on the environments inside and outside the pipe. Having worked under a lot of disgusting sinks and bathroom fixtures, I can tell you from experience that the outside of a pipe is not always a good indicator of what’s inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165651",
"author": "UltimateJim",
"timestamp": "2010-08-04T23:10:59",
"content": "A little iron never hurt anybody.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165689",
"author": "nave.notnilc",
"timestamp": "2010-08-05T02:49:03",
"content": "@Eliasway worse in our water systems :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165708",
"author": "blar",
"timestamp": "2010-08-05T05:31:34",
"content": "How do you keep the pH probe calibrated?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165742",
"author": "Elias",
"timestamp": "2010-08-05T08:51:39",
"content": "Guys, I’m not sure what water systems have to do with this, this is not a pipe with something going through the inside.Looking at this:http://middlewaresensing.files.wordpress.com/2010/08/100802215948.pngthe whole bottom part is submerged.But as Matt mentioned this is probably just a proof of consept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165761",
"author": "fartface",
"timestamp": "2010-08-05T12:15:29",
"content": "Those PH probes have a solution in them that leaches out into what you are testing.I would not want to drink any of the wine he is “monitoring”….Plus why monitor PH? it’s a useless measurement in winemaking as you will get stratification layers in the cask so to get an accurate measurement you need to mix the batch draw a sample and test. 99.9978% of all winemakers do not monitor PH.Let me monitor specific gravity…. Now you have something that is useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165762",
"author": "layne",
"timestamp": "2010-08-05T12:29:46",
"content": "why not just use infrared emitter/sensor?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165769",
"author": "osgeld",
"timestamp": "2010-08-05T13:24:46",
"content": "“Guys, I’m not sure what water systems have to do with this, this is not a pipe with something going through the inside.”you forgot soaking in a mild acid for months on end",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165847",
"author": "rallen71366",
"timestamp": "2010-08-05T17:15:13",
"content": "@UltimateJim Actually, according to the Jack Daniels Distillery guide I had, an iron nail hammered into a cask will render it undrinkable. That’s why JD is so proud of their water supply: they pipe it from 2 miles underground and it’s iron-free. “Stainless” is more “Stain Resistant”, and doesn’t give up it’s iron easily to corrosion, or chemical recombination.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166192",
"author": "andy",
"timestamp": "2010-08-06T15:52:22",
"content": "@fartface: Since the specific grav is changing due to the production of co2 and alcohol, you should be able to reverse engineer the gravity from a measurement of co2 / alcohol content. I don’t remember exactly but its (OG – FG)/something = %ABV. Seems like you sub in OG and %ABV and solve for FG and monitor that throughout. Although it obviously wouldn’t be final, it would be instantaneous, but at the end of the fermentation process that instant it would be final right… lol",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.3736
|
||
https://hackaday.com/2010/08/04/making-home-automation-modules-talk-to-each-other/
|
Making Home Automation Modules Talk To Each Other
|
Mike Szczys
|
[
"home hacks"
] |
[
"arduino",
"audio",
"home automation",
"rnet",
"russound",
"sonos"
] |
[Danny] has been working on
an RNET to Sonos bridge
. These are devices from two different manufacturers used to facility whole-house audio systems. Usually there’s a main controller with a large color screen and then several satellite controllers like the one above which have some of the features but at a lower cost. Normally you’re limited to using hardware from one line of devices in order to get them to talk to each other but [Danny’s] saying ‘no way’ to that restriction.
His latest post
has some of the details on how he pulls this off. He used an RS232 serial connection with an Arduino to sniff out the data stream from the RNET base unit. Once he figured out the protocol he used the Arduino to parse all incoming commands, format them for the Sonos controller, and send it over the Ethernet cable to that device. He’s got everything tied together and working. Take a look at the proof in the clip after the break.
[youtube=http://www.youtube.com/watch?v=Hzj6kTAB5K4]
| 12
| 12
|
[
{
"comment_id": "165564",
"author": "Professor P",
"timestamp": "2010-08-04T18:53:58",
"content": "Check out xAP for a simple, universal home automation protocol that’s ideally suited to this kind of hack –http://www.xapautomation.org",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165574",
"author": "arcnemisis",
"timestamp": "2010-08-04T19:12:41",
"content": "thanks for the great hack Danny and Mike for reporting!Professor P – thank you as well for that info.I was just venturing into this territory again with some new devices to integrate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165575",
"author": "Jack",
"timestamp": "2010-08-04T19:13:11",
"content": "When I finally own a house I definitely want to have a system like this. I hope to build the entire thing from scratch though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165576",
"author": "fartface",
"timestamp": "2010-08-04T19:19:56",
"content": "Russound is NOT home automation. Nither is Sonos.it’s a very limited low end whole house audio setup. Entry level stuff.This is audio stuff and has no home automation in it at all. home automation is things like AMX, Vantage, R4, and Crestron.you cant get russsound to turn on your lights. you cant get russsound to Open shades or control your home theater… IT is a whole house music system.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165577",
"author": "fartface",
"timestamp": "2010-08-04T19:20:58",
"content": "Oh I forgot. IF he asked a integrator he could have gotten his hands on the RNET protocol pdf. It’s not a secret.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165580",
"author": "fartface",
"timestamp": "2010-08-04T19:26:14",
"content": "In fact here….http://www.worthingtondistribution.com/solutions/Documents/CAV%206.6%20Protocol%20Doc%20V1_00_00.pdfRnet protocol documentation.. took me 6 seconds to find it on google.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165599",
"author": "LEDdoctor",
"timestamp": "2010-08-04T20:40:31",
"content": "There are almost always easier or alternative ways to do many of the projects that are posted here, but I think many of us are doing this in the spirit of learning and sport.I say good job for stepping out of your comfort zone and trying it.Cheers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165613",
"author": "Hip",
"timestamp": "2010-08-04T21:39:37",
"content": "Yes, well done. Sonus is pretty cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165633",
"author": "RJW",
"timestamp": "2010-08-04T22:31:06",
"content": "For what it’s worth, there are some pretty solid software packages out there that do this same sort of thing. I’ve used HomeSeer in my house for a number of years now, and it integrates with Russound in some pretty neat ways. Not sure if they do Sonos though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165658",
"author": "Cynyr",
"timestamp": "2010-08-04T23:36:10",
"content": "@Professor Phttp://www.bacnet.org/seems like it would be a better option for a protocol. Seeing as you might have a shot of getting a furnace that supports it, or a AC unit, or any other large piece of mechanical equipment. It’s an open spec. Downside is it does require Ethernet ability, but the ardunino can do that too if it needs to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165674",
"author": "Mr_Bishop",
"timestamp": "2010-08-05T01:33:29",
"content": "Thank you so much, this will really help when I build my smart house, in about 7-10 years ^_^.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165746",
"author": "strider_mt2k",
"timestamp": "2010-08-05T09:55:53",
"content": "SEVENTY-TEN YEARS???Why, that’s a LIFETIME!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.608508
|
||
https://hackaday.com/2010/08/04/network-enabled-window-air-conditioner/
|
Network Enabled Window Air Conditioner
|
Mike Szczys
|
[
"home hacks"
] |
[
"air conditioner",
"cat-5",
"cron",
"ethernet",
"network",
"php",
"window"
] |
It’s no secret that the central US is feels like a very humid oven right now. [Erik’s]
window AC hack
might help you out if you’re coping with triple-digit temperatures. He added network connectivity to the unit above but the picture is a bit deceiving. The blue CAT-5 cable that enters the bottom isn’t connecting directly to the network, but extends the up and down button connections for the unit to an external relay board. From there he uses an SNMP board to connect it to the network and uses PHP commands to reset the temperature. The unit has a working range of 66-88 degrees Fahrenheit so he cycles enough button press to reach the maximum or minimum level, then sets the desired temperature (avoiding the need to know what temperature the unit is currently set at).
If you’ve got an AC unit with a remote control you could always
use an IR device to patch into the system
for similar functionality.
| 20
| 20
|
[
{
"comment_id": "165517",
"author": "biozz",
"timestamp": "2010-08-04T17:29:15",
"content": "nice concept … a GUI and a droid app would be a nice step forward and would be something i would consider doing to my central air but i think a transistor would be far better than a relay board (and quieter) and maybe an Xbee and arduino to a sever or bluetooth to a serveri may be over thinking things but it is a real pain to go all the way to my den to change the temp",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165521",
"author": "fartface",
"timestamp": "2010-08-04T17:42:50",
"content": "My whole house HVAC system has an ethernet interface. it serves up a web page with info for the past 30 days. It came like this from the factory, just the installers were unaware of it and by accident left me the installer guide that showed all the setup info.Bryant furnace with Central air…. very cool info to gather from it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165528",
"author": "Jake",
"timestamp": "2010-08-04T18:03:11",
"content": "The US “is feels”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165532",
"author": "Jake",
"timestamp": "2010-08-04T18:07:13",
"content": "Ok I just have to ask, what is the point to this? The temperature regulation capability of these window units is not good, and I fail to understand why your taste for room temperature would change day-to-day? I set mine at one temperature, and have it turn on an hour or so before I get home…?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165565",
"author": "Concino",
"timestamp": "2010-08-04T18:54:01",
"content": "or you can use X10 to control it wireless. No need the relay board, all you need is a computer that runs a home automation server (tons available on net) that communicates with X10 controller.Look ma no wires! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165569",
"author": "jsngrimm",
"timestamp": "2010-08-04T19:07:51",
"content": "man i could use one of these right now. even here in northern ohio not 2hrs from lake eire its almost double digits. i agree with concino a X10 or arduino with xbee would be a nice addition to control it without extra wires :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165587",
"author": "osgeld",
"timestamp": "2010-08-04T19:59:55",
"content": "hehhere in Tennessee we are currently 104.3 and a humidity of 48% which brings up the heat index to about 125 according to underground weatherit feels hotter than that",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165598",
"author": "CPX",
"timestamp": "2010-08-04T20:33:37",
"content": "@Jake:“I set mine at one temperature, and have it turn on an hour or so before I get home…”That’s exactly what he’s doing – but this is a window AC unit, so not controllable from the main thermostat. He runs a cron job to cool his room an hour before he comes home. The ability to set the temperature to other values is just a perk.Also, to the people saying to control the power with a relay: This unit may not immediately begin cooling after being powered on. In fact, that seems like a stupid idea – that would mean if your power went out, your AC unit would turn on, no matter what. And sure, some of them might turn on immediately, but this model may not.I, for one, think this is a pretty cool hack. Though I agree with others who have said a quieter solution would be preferable, as well as a web interface (if you’re using PHP anyway…). But hey, as a quick and dirty hack, it’s pretty awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165601",
"author": "Abbott",
"timestamp": "2010-08-04T20:44:43",
"content": "Instead of making an external temperature changer, it wouldn’t have been that much more work to make an ethernet connected thermostat to take over for the window unit’s shabby sensor set. I’m in the process of making one using an ATmega168 and a DS1775 I2C thermal probe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165602",
"author": "wifigod",
"timestamp": "2010-08-04T20:50:55",
"content": "I JUST hooked up a new window AC and have it on an X10 appliance module. Controlling over the net via ioBridge and PSC04 serial transceiver. Works great as I rely on dual temp sensors also hooked up to the bridge. Allows me to schedule turn on times AND be reactive (if it’s hotter on a certain day, it will hit a threshold and automatically turn on the A/C until it gets comfortably below the threshold).Also have an HTML5 webpage to control it all (via ioBridge’s APIs), so it works on iOS and Android devices. :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165653",
"author": "Dakota",
"timestamp": "2010-08-04T23:25:33",
"content": "I’ve worked on this, myself as well.I use a dedicated solid-state-relay controlled duplex outlet to control both a box fan and an air conditioner set to full blast. This connects to a parallel port on a tiny little Pentium I laptop I’ve got hanging around.Then, via serial, I use Maxim 1-wire temperature sensors to get an “overall view” of the four corners of my bedroom to calculate the averages, and then turn the AC and fan off/on as needed.On top of that I’ve got a Verizon Aircard in it activated on a prepaid MVNO so that I can control it via SMS and have it respond the same – and an Ethernet port provides me with a networked interface as well for any applications.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165661",
"author": "learn to proof",
"timestamp": "2010-08-04T23:58:01",
"content": "Really….”is feels”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165703",
"author": "Tech B.",
"timestamp": "2010-08-05T04:35:00",
"content": "I was going to do the same thing with mine. It is a really old unit and I don’t have a servo strong enough to turn the knobs. I wanted to patch something into it directly but it belongs to the land lord….I was going to use IRC for the controls though.Anyway, I enjoyed this post.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165714",
"author": "null",
"timestamp": "2010-08-05T06:00:55",
"content": "These windows ACs / mobile ACs are lame, get a split air conditioner just like my LG neoplasma:http://www.lg.com/id/air-conditioner/split/index.jspAlso mine has remote so why bother hacking in a relay board. It’s hardly a hack. A hack would be if he adds an ethernet controller to the original board. I could control ma washing machine with relays too…What I want to do is to add a motor to control my roll-top and to control this with a key combo on my AC’s remote. Tough task thats why I never did it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165736",
"author": "incognito",
"timestamp": "2010-08-05T08:41:27",
"content": "I did something similar to this with an arduino and a webcam. I made a RoIP setup with a hacked a motorola radio to change channels, set scan lists, power on, admin power disable, stuff like that. If he went the web page route it would be more than easy to throw a webcam in front of it.. I was able to hide all the ugly wires by modding the computer case and putting the radio and PS inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165759",
"author": "fartface",
"timestamp": "2010-08-05T12:08:40",
"content": "Note: why not just use IR? that AC unit has a IR remote for it.it is brain dead easy to learn and repeat an IR signal.Plus that model has the timer function. I.E. read the manual and you can set it to turn on and off at times.Anyone have a hack to make a coffee maker make coffee?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165782",
"author": "Ben",
"timestamp": "2010-08-05T14:48:30",
"content": "Yeah that model has a timer but it’s probably one of those primitive ones that requires you to set it each day to turn on in x hours. I usually remember to set mine every day but it is a pain to have to mash the timer button ten times to set it for ten hours. Also, I don’t like doing even simple math that early in the morning.When the electronics failed in my last window AC failed, I ripped them out and put in an electromechanical thermostat and a wall switch for the fan. Then I just plugged it into a wall timer. Not a hack though, just a repair.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165861",
"author": "RAMRunnr",
"timestamp": "2010-08-05T18:05:11",
"content": "I know why he did this hack. Because he wanted to and because he could. The fun part of Hacking stuff is working with what you have to make it different. Who cares if he could have went and bought a new system that could do it out of the box. He had the parts and the know how so he did it! No money spent and the AC does what he wants it to do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166006",
"author": "error404",
"timestamp": "2010-08-06T00:51:33",
"content": "Totally offtopic but:Setpoints 66-68F? That’s a maximum setpoint of 20 degrees?Geeze, I’ve always felt Americans used way too much air con (does it really need to be freezing inside when it’s a warm summer day? doesn’t the differential when you go outside or come in get annoying? do you wear pants in the summer time?), but never realized the hardware is set up to encourage it.In winter I like room temperature to be around 21-22 degrees. In summer a bit warmer is okay. Do people really like their rooms at 18?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "378749",
"author": "db",
"timestamp": "2011-04-12T11:51:11",
"content": "we tried to do the thing done by eric but unfortunately the code given by him isn’t working . can anyone plz plz help its very urgent. the error which is coming is“fatal error call to undefined function snmpset() ”this is in a linux environmentplz plz plz help.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.662268
|
||
https://hackaday.com/2010/08/04/racing-game-uses-a-physical-race-track-and-vehicle/
|
Racing Game Uses A Physical Race Track And Vehicle
|
Mike Szczys
|
[
"home entertainment hacks"
] |
[
"cad",
"cardboard",
"racing",
"rc",
"tron",
"video game"
] |
Racer is a racing video game
with a very real element. The player sits in an arcade-style console; wheel, pedals, shifter, and television display. But in what must be an homage to Tron the game taking place is very real. You can see the track above, designed in CAD and cut from cardboard, which is navigated by that little vehicle the gentleman holds in his hand. It’s wireless and broadcasts video back to the control console. What we have here is
a homemade drone
but for now it’s confined to the gaming grid. Don’t miss the demos after the break.
[vimeo=http://vimeo.com/9056286]
There’s a
followup demo to the clip above
but we were unable to embed it.
[Thanks Hideki]
| 38
| 38
|
[
{
"comment_id": "165497",
"author": "t&p",
"timestamp": "2010-08-04T16:09:10",
"content": "That is bad ass! The only thing I can see to be a prob is the cam’s wireless signal seems to go out in a crash and the top of the arcade unit is not fastened correctly where it rotates on something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165500",
"author": "osgeld",
"timestamp": "2010-08-04T16:21:01",
"content": "all racing games used physical items way back in the day (like when I was a kid)but this sure beats the hell out of a hotwheel glued to a wire with scrolling paper as a track though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165510",
"author": "format c:",
"timestamp": "2010-08-04T16:57:33",
"content": "awesome!one thought. inside the hexagonal shape of the track (great for stability), one could add a sort of half-pipe (just curved sheets of cardboard) to reduce the risk of flipping over, and allowing to use centrifugal force for taking faster turns :)i’m waiting for version 2.0!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165511",
"author": "iBraud",
"timestamp": "2010-08-04T17:00:07",
"content": "I’ve been wanting to do this, glad someone did.For version 0.3:Wireless induction charging in the base of the track, a la fzero.Voltage regulators to run the camera and its transmitter off of the RC battery so that the center of gravity is lower.Multiple cars/controllers for real time competition.For version 0.4:Laser tag weapon system between cars!turbo boost!sweet jumps?Bring it to my house?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165515",
"author": "andres",
"timestamp": "2010-08-04T17:12:22",
"content": "now where this is awesome is other nerds can build their own cars/video-controllers (doesn’t have to be a full steering-wheel thing)and have actual races.i think the full sized track is the real winner here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165518",
"author": "Mythgarr",
"timestamp": "2010-08-04T17:31:05",
"content": "I may as well get this out of the way before the trolls do:No, it’s not technically a hack. No, there don’t seem to be instructions on how to reproduce it. Yes, there’s a very real possibility an Arduino was used somewhere in the process of designing/making/implementing this.Still, I WANT ONE!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165520",
"author": "fartface",
"timestamp": "2010-08-04T17:33:12",
"content": "Nice early alpha prototype.Now upgrade to a real camera and wireless video that does not blank out every 2 inches like the low grade stuff he is using does.what interested me more is the track design. That’s very cool compared to the ho hum rc car build. I am highly impressed with his choice of cheap materials and what looks like a modular design that would allow easy changes to different track configurations.That size with the right choice in cars and you could get 4 cars on the track at once for some real head to head racing fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165522",
"author": "jim",
"timestamp": "2010-08-04T17:45:23",
"content": "Pointless and totally awesome. Needs at least two cars and a better looking track :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165523",
"author": "James Costello",
"timestamp": "2010-08-04T17:48:22",
"content": "When I was a kid I used to wonder if this was how racing games actually worked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165524",
"author": "fm",
"timestamp": "2010-08-04T17:50:49",
"content": "I like the skybox graphics. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165530",
"author": "Headbonk",
"timestamp": "2010-08-04T18:06:09",
"content": "I did basically the same thing with my kids by taping a cheap wireless video camera to the top of one of their radio shack RC cars and then setting up an obstacle course out of toys in the living room.Driving the car from the TV only was pretty difficult, but it was really exciting. It gave you a much greater sensation of speed than any video game I’ve ever played. I think the tweaked sense of scale had something to do with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165557",
"author": "phil",
"timestamp": "2010-08-04T18:45:15",
"content": "add some augmented reality and this could be one stellar platform. need to try this with my slot cars.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165561",
"author": "bob",
"timestamp": "2010-08-04T18:50:57",
"content": "any possibility of a third person view?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165562",
"author": "Greycode",
"timestamp": "2010-08-04T18:51:12",
"content": "The first thing he does need to fix is the car, lower the center of balance on it. If you could get the CoB low enough, you could put a roll cage on the top of the vehicle, when it crashes it simply rolls over and sets itself back up, like a weeble.The only thing keeping that track from looking really well done is the ripple of paper in the middle of the road. It looks like he could use something to glue that down. It does not look like he sets the track up, then lays a roll of paper down, so secure the road surface a little better.Better camera system would be great too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165566",
"author": "Mikey",
"timestamp": "2010-08-04T18:57:52",
"content": "It needs accelerometers and something to move the booth around when it hits a wall and such.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165579",
"author": "Hacker Harry",
"timestamp": "2010-08-04T19:25:15",
"content": "forgive me for answering in german:geil, geil, geil!Cheers!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165581",
"author": "Marc",
"timestamp": "2010-08-04T19:27:17",
"content": "Next version,3 possibilities of camera, in front (thats now), behind the steer and behind the car",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165583",
"author": "Marco",
"timestamp": "2010-08-04T19:42:40",
"content": "15 years ago we made a somewhat similar prototype for an augmented reality system. The RC car had 2 cameras on it for stereoscopic vision that were fed into the helmet mounted display. Furthermore the car had ultrasound sensors which fed into renderers which knew about the (static) scenery. By flipping a switch the user would either view the track through the car’s “eyes” or a bird’s eye view of the car & track.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165589",
"author": "Gilbert Wham",
"timestamp": "2010-08-04T20:13:40",
"content": "Maglev track & Home-made turbines?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165604",
"author": "Haku",
"timestamp": "2010-08-04T20:58:39",
"content": "That track looks like lots of fun to drive, top marks for the entire build, lucky to have all that indoor space to build it in too.FPV RC car driving is a lot of fun, if you don’t want to go to the trouble of building a whole arcade cabinet then some good LCD glasses work great, especially if you take the time to somehow block off excess daylight so you only see the screens.When I first got into it I found that driving the car from the camera mounted to the front of the RC car becomes easier and more ‘natural’ than driving it normally.I got just got some Zeiss Cinemizer LCD glasses, pretty good optics though not as good optics on my high end Sony Glasstrons which are better for watching films etc., but oh so much more portable and ideal for FPV RC car driving.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165606",
"author": "Leithoa",
"timestamp": "2010-08-04T21:05:26",
"content": "v1.1 add some sort of shock absorbing/isolation mounts for the camera so it doesn’t cut out at every joint in the track or when it rolls.There’s no need drop cash to get a new better camera when you can acheive the same results with some rubber motherboard/case fan mounts that cost next to nothing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165608",
"author": "zool",
"timestamp": "2010-08-04T21:11:05",
"content": "coolsome ideas:you could also make it playable through the internetcar needs to be self-rightingthey could use a slot car trackmultiple cars/players",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165623",
"author": "Mihail121",
"timestamp": "2010-08-04T21:53:30",
"content": "Wow, the game’s graphics are indeed pretty convincing and realistic. Makes me almost feel as this is a real car on a real track.Seriously though, I indeed have a comp.sci. degree, but I will never be able to be that creative. :/ Nice job and keep up the amazing work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165630",
"author": "Whatnot",
"timestamp": "2010-08-04T22:11:47",
"content": "The camera cutting out might be annoying in a way but it also gives it a nice ‘real’ effect, and it might prevent it from getting boring maybe?And there are remote control toy cars that can flip and continue, might be an idea to use one of those, or add some attachment that tips it back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165631",
"author": "Admin@webdefend",
"timestamp": "2010-08-04T22:13:09",
"content": "i think its cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165652",
"author": "Skitchin",
"timestamp": "2010-08-04T23:25:05",
"content": "I wanted to do something a while back. I modified an XMOD with some performance parts. I put a small wireless camera on the hood and could drive through the house watching on my TV. I was trying to tap into the controller signal but gave up on that end. Those things get pretty damn fast with the right stuff on them, mine was tested at 30mph, which is pretty wicked inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165677",
"author": "josh",
"timestamp": "2010-08-05T01:48:06",
"content": "I love this! I always wanted to be able to play a ‘real’ game of Atari Combat with something likethis.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165716",
"author": "elektrophreak",
"timestamp": "2010-08-05T06:11:27",
"content": "this is cool, i love it! make us the internet controller so we too can play! :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165748",
"author": "strider_mt2k",
"timestamp": "2010-08-05T09:59:53",
"content": "This is beautiful. :)Well done sir. I would like to play next please.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165752",
"author": "Guy on the couch",
"timestamp": "2010-08-05T10:36:07",
"content": "Lots of additional videos, photos and build infos on the different versions (mostly in german):http://racer.sputnic.tv/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165764",
"author": "GIBurrito",
"timestamp": "2010-08-05T12:42:56",
"content": "lol @ fmI love the over sized, thumbs up race-goers as well!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165843",
"author": "Dosbomber",
"timestamp": "2010-08-05T17:00:37",
"content": "Great build!@Mythgarr: There was an Arduino involved, as mentioned in the subtitles.@Headbonk: I did something similar to your RC car with a camera, except I built a tiny robot with a Wifi camera mounted on it, and instead of the TV, I watched the action on my computer. Instead of toys in a living room, I used mine to.. um… “explore the mysterious land of Underbed seeking new life (apparently inhabited by a civilization of Dust Bunnies)”. There’s no way I’d have built a dedicated cabinet for the control system, though. That’s hard core.Version 2 of my system (still just something to toy around with) is going to use 4 cameras with a 90° POV, one pointed straight ahead and the other three pointed at the main compass headings (in other words, separated by 90°), which would feed back to a set of 4 projectors that would project the feed onto a ring of screens that would surround the user’s head, so you’d get a full view around the vehicle without the encumbrance of an HMD, or the hassle of tracking the user’s head/eye position to adjust the view of a single display as the user turns or looks around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165954",
"author": "LPS2",
"timestamp": "2010-08-05T21:39:08",
"content": "I think it is an homage to “Wipeout” just as places such as engadget are reporting… looks like the first track from the newer games",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166061",
"author": "fivi",
"timestamp": "2010-08-06T05:24:50",
"content": "This is brilliant. it’s like an irl virtual reality… i think someone may have posted this on Fireviews already, actually",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166195",
"author": "Phil",
"timestamp": "2010-08-06T16:04:14",
"content": "This really isn’t very new at all. Haven’t we all done something like this before? It was the first thing I did when I got a small wireless camera – I taped it into a Lego built race car, built a track around my home and raced around with it while sat in front of the TV.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167202",
"author": "aperson",
"timestamp": "2010-08-10T02:10:17",
"content": "They have exactly this at Virtual Disney. Except instead of a cardboard track, it’s a maze built into the floor with around 10 vehicles you can drive around with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167356",
"author": "Andrew",
"timestamp": "2010-08-10T16:50:22",
"content": "This plus some virtual reality, could equal some sick mario style racing, complete with power ups and all… could be a fun game..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "169941",
"author": "Joel Carlo",
"timestamp": "2010-08-18T17:57:58",
"content": "Awesome. All the car needs now is a mini rocket launcher and sub machine gun attached to it for that added sense of realism missing from so many race games these days. Do it MEOW!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.448507
|
||
https://hackaday.com/2010/08/04/all-metal-hot-end-for-makerbot/
|
All Metal Hot End For Makerbot
|
Jakob Griffith
|
[
"cnc hacks"
] |
[
"aluminum",
"extruder",
"hot end",
"melt",
"ptfe"
] |
Imagine
if you will for a moment, you’re printing along on your
Makerbot clone
and all of a sudden your PTFE hot end melts, what are you going to do now? One solution is to
mill your own
all metal end from a bolt with some careful drilling. Or you could follow [Peter Jansen] who has made his own all metal hot end using the existing extruder. All that’s required is some aluminum sheet and cutting down the nozzle and hat (and fans to help, but technicalities), and you’re in business with no more melted PTFE hot end.
| 19
| 19
|
[
{
"comment_id": "165501",
"author": "osgeld",
"timestamp": "2010-08-04T16:23:44",
"content": "“Imagine if you will for a moment, you’re printing along on your Makerbot clone and all of a sudden your PTFE hot end melts”I dont have a maker bot, never seen one in real life and have not clue what a PTFE hot end is or why one would be using something that could melt in the first place",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165503",
"author": "glum",
"timestamp": "2010-08-04T16:33:21",
"content": "@osgeld: I share your background, or lack thereof, but google tells me PTFE is Teflon(TM). It also tells me that that stuff has a melting point of 327 degrees C, so if temperature regulation in your hot end is lacking, I guess that might be problematic.As for what a hot end is, it doesn’t take much guessing to figure that it is probably the part where the melted plastic comes out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165506",
"author": "osgeld",
"timestamp": "2010-08-04T16:44:41",
"content": "it could also mean a hooker with a bottle of Tabasco sauce, but your probably rightpoint was don’t assume everyone here has these things and automatically know wtf your talking aboutand I generally don’t do research when I am imagining (maybe later to make it practical but not during)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165509",
"author": "Regulus",
"timestamp": "2010-08-04T16:51:33",
"content": "I have a printer based on that machine’s design.The PTFE becomes malleable as it approaches its melting point, so even though the machine whould NEVER be going over 250C, the PTFE sleeve that carries non-molten plastic filament to the heated part of the extruder can warp.If/when it warps (lost four to this myself) the plastic begins to leak out of the PTFE tube and does so by pressing it outwards and expanding into the threads of the heater barrel and then out of the enclosure entirely.This can also be fixed to some degree with a copper sheath and a pipe clamp.This system aims to cool down the heater barrel rapidly and in a localized way, so as to produce the shortest thermal gradient possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165514",
"author": "Vonskippy",
"timestamp": "2010-08-04T17:01:14",
"content": "I thought they came out with a cream in the 50’s that solved the “hot end” problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165563",
"author": "bobdole",
"timestamp": "2010-08-04T18:52:55",
"content": "Doesn’t PTFE release some really seriously gnarly fumes when it gets to that temperature?If your extruder is PTFE, you’d better keep your birds outside the house or they’ll die.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165567",
"author": "Regulus",
"timestamp": "2010-08-04T19:04:21",
"content": "PTFE begins to release gasses at high temps, yeah.http://www.fluoridealert.org/pesticides/teflon.decomposition.prod.htmIf you are running the PTFE at 250C, you’re doing it wrong.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165568",
"author": "osgeld",
"timestamp": "2010-08-04T19:05:04",
"content": "which brings me back to one original point, there has to be something better out there than what they are using, yea ok so one poster says it melts at 350c, these machines run ~250c that is not that much of a difference in the big picture, as another poster pointed out it starts to get soft and cause problems, hince THIS hack. but still soft fumy plastic doesnt sound like the best choicediscuss : )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165605",
"author": "nobody",
"timestamp": "2010-08-04T20:59:08",
"content": "osgeld,I’m generally in agreement. I think there has to be a better material, but I’m at a loss for what that might be.PEEK?http://www.machinist-materials.com/comparison_table_for_plastics.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165607",
"author": "osgeld",
"timestamp": "2010-08-04T21:06:28",
"content": "what is the advantage of using plastic at all, why not metal? would a quarter inch of steel rod with a hole in it heatsink that much?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165612",
"author": "octel",
"timestamp": "2010-08-04T21:19:58",
"content": "@osgeldYou’re absolutely right. It’s basically a hot glue gun anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165634",
"author": "Squirrel",
"timestamp": "2010-08-04T22:31:28",
"content": "@octelI wonder if anyone has made a 3D printer using a hot glue gun yet…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165635",
"author": "Squirrel",
"timestamp": "2010-08-04T22:33:53",
"content": "@myselfAppears so. No build log or anything, but still:http://blog.rebang.com/?p=101",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165639",
"author": "Regulus",
"timestamp": "2010-08-04T22:49:35",
"content": "@SquirrelThat was like, the first reprap prototype’s extruder system.Hot glue is expensive and not very strong.PEEK is in use among many rep-rappers.Currently the reprap/makerbot/bfb/shapercube/whatever universe looks like this:PEEK for ABS plastic at 225-250CPTFE for PLA plastic at 180-200CMetal for anything 250-300CThe primary purpose of the PTFE/PEEK tube is to act as an insulator, as in many printers the parts right above that hot nozzle are parts the nozzle once printed! You have to disperse or otherwise obstruct more than 250C, or your machine will melt itself.In the case of the makerbot, acrylic is used for the motor block. If it gets got it can melt, warp, and generally muck things up. It’s also important to note that the extruder controller board is mounted right above this as well, so rising hot air can sometimes make the board overheat and power off in the middle of a print.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165678",
"author": "Osgeld",
"timestamp": "2010-08-05T02:00:33",
"content": "ah, thanks for clearing that up",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165692",
"author": "jeditalian",
"timestamp": "2010-08-05T03:17:52",
"content": "what if i want to use a controlled thermite reaction to extrude not plastic, but molten iron from my ‘makerbot’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165756",
"author": "leafy",
"timestamp": "2010-08-05T11:52:43",
"content": "then you use an asbestos nozzle obviously!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165997",
"author": "error404",
"timestamp": "2010-08-06T00:39:00",
"content": "Which link is the link to the discussed project? I guess it’s ‘Imagine’? This is a terrible choice of linked text.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166174",
"author": "Dosbomber",
"timestamp": "2010-08-06T14:43:40",
"content": "The hot melt adhesive industry uses a brass nozzle with a stainless steel insert in a variety of diameters and length (called engagement) to suit the demands of the application. There are other nozzle types but that’s generally the combination used. A nozzle of this type would suit this application extremely well.The least expensive aftermarket standard nozzles are around $10 US, too.http://www.hotmeltnozzles.com",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.781054
|
||
https://hackaday.com/2010/08/03/the-quest-for-a-bicycle-power-system/
|
The Quest For A Bicycle Power System
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"battery",
"bicycle",
"charger",
"cycling",
"dynamo"
] |
[Garote] has been extremely busy. Busy building an electrical system into his bicycle, and even busier writing
a monumental post about it
. He covers an impressive range of topics, starting with the goal of adding a generator, battery, charging system, lights, and accessories to the bike. From there he clicks off one thing at a time, researching and ordering a wheel with a Dynamo hub for the generator, assembling and testing the cells of his battery, choosing the controller board for the charging system, and designing the accessory circuits like the iPhone charger above. If he adds too much more to the two-wheeled rig
he’s going to have to plan a big road trip with it
.
[Thanks Xuxo]
| 22
| 22
|
[
{
"comment_id": "165281",
"author": "Josxbc",
"timestamp": "2010-08-03T20:25:15",
"content": "Nice!!..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165286",
"author": "afasgfa",
"timestamp": "2010-08-03T20:42:34",
"content": "20amps from a lithium battery cell??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165291",
"author": "Haku",
"timestamp": "2010-08-03T21:00:16",
"content": "I’ve been skimming through some of the pages and have to say it’s an amazing write up! This is a pure HaD article if there ever was one.On the power front for bikes, personally I just tap into the battery already on my ebike ;) a 26v 9Ah lithium-ion pack which happily powers my custom, 10 watt, 300 3mm LED front light (using a regulator from dimensionengineering) even when it’s got so low it can’t drive the hub motor.@afasgfa, LiFePO4 has an extraordinary discharge capability.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165297",
"author": "jeditalian",
"timestamp": "2010-08-03T21:24:54",
"content": "i just need to stick an inverter on mine so i can charge on the go. my phone has crap battery life.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165298",
"author": "jeditalian",
"timestamp": "2010-08-03T21:28:58",
"content": "or it would probably be more efficient to step down the already existing DC to usb voltage..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165318",
"author": "natrix",
"timestamp": "2010-08-03T22:36:52",
"content": "@afasgfa i’ve heard of lithium polymer batteries that can discharge at 500 amps for short periods of time. i have no idea how they make a lithium cell with such a low esri stopped reading once i saw the usb connections… that’s one of the most hacked together usb devices i’ve ever seen. you figure a smart guy like that could afford a hot air tool to pop off those connectors or to spend the bucks to spin up a board.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165321",
"author": "mjn",
"timestamp": "2010-08-03T22:54:38",
"content": "afasgfa: LiFePO4 are often rated for 30C or higher, continuous. However, it looks like these:http://www.batteryspace.com/HighPowerLFPPolymerCell3.2V10Ah8790160-10C32Wh100Arate.aspxare the cells he’s using. They’re rated for 5C continuous (50A). Bummer.A123 cells are more fun – some are rated for 30C continuous, 50C for 10s bursts. Yowza.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165324",
"author": "tehbasti",
"timestamp": "2010-08-03T23:03:25",
"content": "I build SON Dynamos at work :)makes me feel good to see that my everyday work is a part in cool projects like thischeers from Germany",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165335",
"author": "mjn",
"timestamp": "2010-08-03T23:36:22",
"content": "Forgot to mention: looks like he didn’t include any means of monitoring the individual cells or balancing them.His comment about not needing filtering on the 5V line because it is battery powered is somewhat funny, too. Yes, battery power tends to be quite clean with a constant load. But the 5V is coming from a switching power supply. So not only does the battery supply have a very noisy load on it, but the USB isn’t even coming from the battery. Bleh.His section about battery chemistries was fairly inaccurate as well.I was curious to see his enclosure design (as a lot of people really mess that up…) but he doesn’t seem to be done documenting it.Definitely a hack though, and a decent one at that. More like this. Less Arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165343",
"author": "Ben Wright",
"timestamp": "2010-08-04T00:33:34",
"content": "I think he should of built it into a backpack/ something removable. I doubt he leaves his iphone on the bike when he parks the bike. It’s a big writeup, but he got carried away for what he thinks he needs for his Mt. Everest bike ride.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165367",
"author": "alex",
"timestamp": "2010-08-04T02:18:40",
"content": "hey, im sure someone probably posted something along these lines, but the pliers seem a bit out of place… but then again hey whatever works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165369",
"author": "McSquid",
"timestamp": "2010-08-04T02:40:44",
"content": "I have that exact same vice grip and its in exactly the same condition.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165394",
"author": "error404",
"timestamp": "2010-08-04T04:46:36",
"content": "@mjn:He also mentions the ferrite beads several times, but if you look at his wiring job, he’s connected directly to USB pins 1 and 4, bypassing the ferrites. Oops.Great writeup otherwise, I wasn’t aware of those TI switching regulator modules, and they look very handy and are pretty reasonably priced ($12/ea) if you don’t go the scam-a-sample route. There’s factual inaccuracy here and there, and he really should have a proper battery controller in there, but nevertheless a wealth of information for newbies.More like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165438",
"author": "Glen",
"timestamp": "2010-08-04T08:06:40",
"content": "@McSquidMe Too !no workshop should be without one :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165439",
"author": "strider_mt2k",
"timestamp": "2010-08-04T08:12:31",
"content": "The vice grips are like…a sign that he’s a regular guy. :)Yes, I believe I have a pair like that too.Interesting stuff, especially since I’ve been considering taking up mountain biking again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165461",
"author": "Josh",
"timestamp": "2010-08-04T12:11:46",
"content": "lol this looks pretty awsome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165470",
"author": "KC8RWR",
"timestamp": "2010-08-04T13:29:07",
"content": "Reading the part about charging an iPhone made me wonder how long it will be before he tries to plug in an iPad or some newer generation iPhone and it doesn’t work. He should read thishttp://www.ladyada.net/make/mintyboost/icharge.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165487",
"author": "osgeld",
"timestamp": "2010-08-04T15:40:34",
"content": "thanks KC8RWR we would have never noticed that 2-3 post down on the homepage",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165489",
"author": "luke",
"timestamp": "2010-08-04T15:48:36",
"content": "where can i buy a tune charger? someone please tell me a link or something.ljthevj@googlemail.com:) thanks in advance",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165694",
"author": "jeditalian",
"timestamp": "2010-08-05T03:27:08",
"content": "yeah, i was gonna say: VICE GRIPS FTW!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165805",
"author": "bob",
"timestamp": "2010-08-05T15:29:10",
"content": "Nice video of Steve Roberts. He’s now doing similar things with a boat:http://nomadness.com/blog/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166143",
"author": "kimomenu",
"timestamp": "2010-08-06T11:19:30",
"content": "See that the Tunecharger isn’t for sale anymore. Does anyone know where to find the tunecharger?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.723699
|
||
https://hackaday.com/2010/07/27/air-freshener-hacking/
|
Air Freshener Hacking
|
Mike Szczys
|
[
"home hacks"
] |
[
"arduino",
"bot",
"glade",
"irc",
"motion sensing",
"relay",
"sense and spray"
] |
In an effort to improve his marital standing [Tech B]
hacked an air freshener
to make it Internet controllable. The main component here is a Glade Sense and Spray. It cost him $7 and is meant to spray out some sweet smells when it senses motion in the room. The unit also has a manual spray button which he patched into with the help of a relay. From there some Arduino code and an IRC bot take over, letting him unleash freshness from anywhere he has IRC access.
When reading about this we were also thinking: “motion sensing circuitry available at local stores for just $7?”. We may have to conduct an investigation into the alternative usefulness of that package.
If you have another brand of automatic freshener around it should be
just as easy to hack
as this one was.
| 35
| 33
|
[
{
"comment_id": "162650",
"author": "Aaron",
"timestamp": "2010-07-27T18:51:39",
"content": "“Improve his marital standing”? What, does he fart a lot?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162658",
"author": "t&p",
"timestamp": "2010-07-27T19:02:24",
"content": "motion sensing circuitry$7",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162659",
"author": "Maximillian",
"timestamp": "2010-07-27T19:03:26",
"content": "I was just thinking that you could hack this with a fart detector in the couch….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162660",
"author": "none",
"timestamp": "2010-07-27T19:06:15",
"content": "“freshening” air by adding perfume is like “cleaning” stuff by only adding detergent.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162661",
"author": "Nick",
"timestamp": "2010-07-27T19:11:23",
"content": "$7? That’s awesome!I can see some camera adaptation in the near future…Every time someone walks by, snaps a pic…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162662",
"author": "amishx64",
"timestamp": "2010-07-27T19:14:06",
"content": "Hmm motion sensing for $7!Anyone know the range? I assume this is a PIR (passive infrared), right?I think it’d make for some good home security as well…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162664",
"author": "MS3FGX",
"timestamp": "2010-07-27T19:19:44",
"content": "Motion sensing is exceptionally simple, you just need to watch the resistance in a pair of photocells for large enough changes, indicating something has past by and disturbed the light level of the area. Putting them behind a fresnel lens will increase sensitivity.So basically two CdS cells connected to the analog inputs on a micro will give you motion sensing in your project. So $7 hardly seems like something to be excited about.Though pulling the board out and getting it to trigger something else on it’s own might be handy for something very simple and quick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162665",
"author": "tikka",
"timestamp": "2010-07-27T19:20:32",
"content": "I absolutely HATE those airfreshners",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162669",
"author": "StinkyPete",
"timestamp": "2010-07-27T19:22:59",
"content": "So all this because “the house stinks when my wife gets home.” Maybe you should figure out why your house stinks in the first place, rather than covering up the odor with nasty chemicals that will coat everything in your house, your lungs, etc?For example, open up all the windows and air out the house completely, then close up all the windows and room doors, and see which rooms stink? Maybe you’ve got dead rats in the walls or some food fell into a hidden spot? Maybe you just need to take the trash out more / compost garbage in the back yard / buy a garbage disposal? Maybe the carpets need cleaning?Sigh.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2957124",
"author": "Craig",
"timestamp": "2016-03-17T12:36:13",
"content": "I think your ID and post hysterically ironic",
"parent_id": "162669",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162673",
"author": "kernelcode",
"timestamp": "2010-07-27T19:35:24",
"content": "I’m with MS3FGX, pretty sure these just use photoresistors which I really wouldn’t want to pay $7 for!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162674",
"author": "matthew",
"timestamp": "2010-07-27T19:36:53",
"content": "this doesent use PIR, i wish it did, its simple a CdS cell that detects dramatic changes in light, thats all",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162675",
"author": "James",
"timestamp": "2010-07-27T19:37:46",
"content": "As above, motion sensing via PIRs and photodiodes etc has been about since the 70s, for buttons? I had a PIR kit that cost pocket-money back in the early 80s?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162677",
"author": "Haku",
"timestamp": "2010-07-27T19:42:38",
"content": "If the air freshener only uses photoresistors then $7 is a bit expensive if that’s all you want from the device, you can get 4 small PIR sensors from Chinese eBay sellers for $15 including postage.In testing I’ve found they can sense you moving two room lengths away easily, and their power usage is extremely low too; 40uA when running and 60uA when triggered. Only drawback is the postage time of about a week or so.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162679",
"author": "Anonymous",
"timestamp": "2010-07-27T19:46:21",
"content": "Cheap motion detectors sound like fun.The question is, why would you want to freshen a room you’re miles away from?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8117815",
"author": "Daniel Gooch",
"timestamp": "2025-04-11T16:39:54",
"content": "To make your wife feel loved by providing a burst of good smelling stuff",
"parent_id": "162679",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162686",
"author": "ILeftTheBody",
"timestamp": "2010-07-27T20:12:03",
"content": "@Anonymous to hide the smell of the body while you get far enough away so they cant catch you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162690",
"author": "Brennan",
"timestamp": "2010-07-27T20:24:11",
"content": "Random question: What kind of light/motion sensors are used in the industrial automatic-flush toilets?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162724",
"author": "firestorm_v1",
"timestamp": "2010-07-27T21:56:35",
"content": "Parallax’s PIR sensor (true IR) is $9.95 at radio shack last I checked.@BrennanMost devices that I’ve taken apart usually consist of an IR emitter and receiver combination. Kinda like an interrupter except the IR transmitter and receiver are both pointed the same direction instead of at each other. When the receiver detects a sufficient amount of IR, it triggers and whatever microcontroller triggers the desired function. The handsfree paper towel machines are less complex and uses a photocell and detect brief changed in light. If the reading’s the same across several readings, it does nothing to prevent killing the batts when someone turns the bathroom light off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162736",
"author": "Harvie.CZ",
"timestamp": "2010-07-27T22:17:08",
"content": "what about filling it with laughing or tear gas? ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162740",
"author": "DLC",
"timestamp": "2010-07-27T22:25:08",
"content": "I prefer the $9.99 motion sensor from Radio Shack, I have opened one of those and it works, but still prefer the Radio Shack one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162763",
"author": "Per Jensen",
"timestamp": "2010-07-27T23:28:12",
"content": "Glade, a good way to obtain perfume allergy – when i visit my dad’s house, i always turn these thingies off, to his annoyance – but i really dislike all that chemical smell, eww!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162795",
"author": "jh",
"timestamp": "2010-07-28T00:07:35",
"content": "I just put an exhaust on the cat box using a PIR sensor tied to a time delay relay (ELK-960) to drive a fan for 30 minutes after the cat drops a load. works great. It did cost more than $7 though. wife loves it and cares nothing about the aesthetics.You can figure out how to build it just from looking at it. It’s real simple.check out the finished product if you want (myspace warning)http://blogs.myspace.com/index.cfm?fuseaction=blog.view&friendId=126778581&blogId=532460821",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162805",
"author": "Joel",
"timestamp": "2010-07-28T00:49:06",
"content": "why wont my comments go through",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162806",
"author": "mr ugly",
"timestamp": "2010-07-28T00:51:03",
"content": "These things can be near deadly.http://joelchrisman.blogspot.com/2010/07/killer-air-freshener_07.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162807",
"author": "medwardl",
"timestamp": "2010-07-28T00:54:12",
"content": "I have a more devious purpose for this build. Add in an irc controlled lock and you have a perfume smelling irc controlled torture chamber. *^_^*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162834",
"author": "erebus",
"timestamp": "2010-07-28T02:06:31",
"content": "I used a motion sensor night light wired to a usb kb controller on the print screen key to wake a pc up.Cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162868",
"author": "Tech B.",
"timestamp": "2010-07-28T03:59:49",
"content": "@StinkyPeteThe house doesn’t stink per say. Its a very old building. We live in an apartment and that musky smell has been here since we moved in.I wasn’t after the motion sensing, I was after making the house smell good from an IRC channel. It was to learn.Nothing to do with farts lol. But that did give me an idea….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162869",
"author": "vcarte",
"timestamp": "2010-07-28T04:03:47",
"content": "Hey, I’m TechB’s wife. I feel like my housekeeping has been insulted. I clean my heart out in this place. i believe that a lot of what “clean” is, is how it smells. So i am paranoid that my apartment stinks and that if anyone shows up they will think that. There honestly may not even be a smell, besides, if it gave TechB something to hack….why not?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162887",
"author": "Anonymous",
"timestamp": "2010-07-28T04:53:52",
"content": "Seriously – hacking is always fun, but a smell in an apartment needs to be addressed in a different way.Do these:1) Wash (washable) surfaces with a microfiber cloth and household vinegar solution. That (unpleasant) smell will dissipate in a couple of days, but has the potential to transform many smelling compounds into non-smelling ones, and the microfiber picks up the gunk.2) Rent a good ozone generator and treat each one of your rooms.If these two do not help, you really need to consider moving out before your lungs are full of spores. I have talked to people who lived in rotting houses and their stories are not something you want to experience.An unpleasant smell usually signals you shouldn’t be inhaling that. Masking that with something else does not change the fact you shouldn’t be inhaling it. Actually, air fresheners may also contain stuff you do not want to inhale, such as phtalates and polycyclic musks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162895",
"author": "RBRat3",
"timestamp": "2010-07-28T05:35:51",
"content": "You could sell that ~” IRC Unleash The Freshness “~ God that would be great for a client ad.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162901",
"author": "M H",
"timestamp": "2010-07-28T06:30:39",
"content": "Air “fresheners” contain many compounds that are toxins, carcinogens, etc. Best not to be breathing them (or depositing them in your living environment).http://www.sciencedaily.com/releases/2006/05/060524123900.htmhttp://www.arb.ca.gov/research/abstracts/01-336.htmhttp://www.sciencedaily.com/releases/2008/07/080723134438.htmhttp://en.wikipedia.org/wiki/Air_freshener#Toxicity@Tech B. –If you have musty odor in building, important to find out why, and try to deal with the source. It could indicate mold, which can be a health hazard also.http://www.doh.wa.gov/ehp/ts/IAQ/got_mold.htmlhttp://www.epa.gov/mold/moldguide.html(Not as hacky, but more healthy.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162963",
"author": "IronJungle",
"timestamp": "2010-07-28T10:16:44",
"content": "Here is my simple air freshener hack:http://www.youtube.com/watch?v=3k0fEYeV5t0http://www.youtube.com/watch?v=NAJKLZh136Y",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163514",
"author": "FrodoB",
"timestamp": "2010-07-29T22:05:35",
"content": "Here:http://cid-4c7ec0c2176a0b0d.photos.live.com/browse.aspx/Environmental%20electronicsis a Air Wick hack. I’ve seen these for $4.99 at discount stores (Ollies).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "364956",
"author": "jacky",
"timestamp": "2011-03-22T16:02:03",
"content": "I made a puppet out of wood, with arms on pivots at the shoulder joint.No legs. I took out the canister. Fixed a small hook into the hole in the mechanism which moves downwards when motion detected. Put the puppet in place and joined the top of the arms together with strong cotton. hooked the mechanism on. When motion is detected, the hook moved downwards and the arms raise up. Had lots of cardboard try-outs to get the best lever mechanism – the attachment point had to be as near the pivot point as possible. had fun anyway!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.851984
|
||
https://hackaday.com/2010/07/27/6809-computing/
|
6809 Computing
|
Mike Szczys
|
[
"classic hacks",
"computer hacks"
] |
[
"6809. 8-bit",
"motorola",
"serial",
"terminalscope"
] |
[Matthew Arnoff]
built an 8-bit computer
around the
Motorola 6809
processor. He chose this processor because it seems there are a lot of
Z80 builds
out there and he wanted to try something different.
This actually packs quite a punch. He’s clocking the machine at 2 MHz with 512 KB of SRAM memory. Compact Flash that is FAT formatted provides mass storage. He’s using a serial connection for a user interface. After the break you can see his oscilloscope is used as the monitor. This was easy to accomplish by connecting the serial out to
Terminalscope
, one of his previous projects.
[youtube=http://www.youtube.com/watch?v=3Dd1y3rbPck]
[Thanks Marc]
| 44
| 43
|
[
{
"comment_id": "162581",
"author": "Ben Ryves",
"timestamp": "2010-07-27T14:42:36",
"content": "Cracking work there. :-) Especially nice to see something that’s a bit different to the usual Z80/6502 fare!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162587",
"author": "svofski",
"timestamp": "2010-07-27T14:53:51",
"content": "A beautiful computer. Loved the description page design too, rather sinistrous ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162592",
"author": "Entropia",
"timestamp": "2010-07-27T14:58:38",
"content": "Whoa! That is THE SHIT! Really nice work, Matt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162593",
"author": "mongrelbitch",
"timestamp": "2010-07-27T15:08:02",
"content": "So what OS or firmware does this have? Did he code that by himself? Throwing together bunch of chips won’t make you a bootable computer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162594",
"author": "Chuckt",
"timestamp": "2010-07-27T15:08:12",
"content": "This is the stuff I like to see!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162595",
"author": "Kuhltwo",
"timestamp": "2010-07-27T15:16:04",
"content": "WOW!! Talk about a flashback!! Takes me back to my “root”s. I cut my teeth on the old Rockwell PPS4 and PPS8 chip sets, and the “infamous” S-100 bus.At least he doesn’t have to use 1K of core memory, or load from a punched tape, or from setting switches for each line of code.Makes me wonder what’s buried in my ancient junk boxes in the attic. I know I kept some old chips up there.As far as an “OS”? It is what you write. LOLReally a beautiful piece of work.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "435506",
"author": "Pablo",
"timestamp": "2011-08-15T19:35:14",
"content": "Hi i read that you worked with pss4, do you have any datasheet of this IC? Because i only found PPS4/2 datasheet and i am like a mad searching for PPS4/1.Thanks",
"parent_id": "162595",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162597",
"author": "matt",
"timestamp": "2010-07-27T15:18:57",
"content": "@mongrelbitch: I wrote the OS/firmware as well. The 8KB ROM includes a monitor, assembler, disassembler, FAT16 driver, and in-system-programmer. (allowing it to be reprogrammed over the serial port.)Also, if you wouldn’t mind changing the article, my last name is Sarnoff. :-p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162599",
"author": "Bob",
"timestamp": "2010-07-27T15:31:47",
"content": "My first computer was a SWTPC 6809, and the only game console I ever bought was a Vectrex, which also had a 6809. It’s a wonderful, wonderful processor and it’s a shame it wasn’t more successful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162600",
"author": "Brad Hein",
"timestamp": "2010-07-27T15:39:27",
"content": "Can it run Seti@Home? ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162603",
"author": "chris",
"timestamp": "2010-07-27T15:45:55",
"content": "nice tidy build, with working software and custom OS – nice to see!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162604",
"author": "lwatcdr",
"timestamp": "2010-07-27T15:52:17",
"content": "@Matt you last name is Sarnoff? Are you going to put an RCA sticker on it?Anyway what do you have planned for the OS? A port of Contiki would seem like an easy way to go but I saw that you want to write your own.What do you have in mind.Also what about video output?Audio?Just wondering. Nice work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162605",
"author": "fartface",
"timestamp": "2010-07-27T15:55:25",
"content": "6809 kicks Z80’s butt hard! I cut my teeth on the 6809..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162607",
"author": "fartface",
"timestamp": "2010-07-27T15:56:25",
"content": "Note to posters… A computer does not need an OS. My first robot had no OS, my first computer (Kim-1) had no OS.. you had the application you loaded into memory and executed.OS’s are for wussies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162616",
"author": "441",
"timestamp": "2010-07-27T16:41:33",
"content": "Yes it needs os you stupid fatface. How else could it load your program from whatever disk, memory card etc into the memory and execute it.Otherwise the programs would have to be already flashed into some kind of eprom.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162617",
"author": "matt",
"timestamp": "2010-07-27T16:42:08",
"content": "@lwatcdr Hehe. No relation, actually.The “OS” in the Ultim809 (and other 8-bit computers) has a very limited role. It’s just a few KB of code in ROM that sets up the hardware and allows other programs to be run.Other OSs (like OS-9, Contiki, etc.) are too complex for this project. It’s just going to be a single-tasking machine like a C64 or Spectrum.For audio and video, I have some YM2149 and TMS9918 chips. There aren’t a lot of general-purpose video chips; most computers of the 80s used custom parts. The TMS9918 (ColecoVision, TI-99/4a, etc.) isn’t a great video chip, but they are common on eBay. The V9938 and V9958 (used in the Japanese MSX computers) are probably the most advanced, but come in a weird shrink-DIP package and can’t be socketed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162624",
"author": "Ben Ryves",
"timestamp": "2010-07-27T17:05:33",
"content": "@matt: I found it tricky to source an appropriate video chip for my computer so went for the microcontroller solution. Have you considered something like the Parallax Propeller? That can generate very impressive (colour) video output, where common DIP AVRs or PICs tend to be rather memory-constrained.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162626",
"author": "baobrien",
"timestamp": "2010-07-27T17:10:54",
"content": "This is pretty cool, but I still like the Z80. Also, it’s the only one I have quick access to. I’d say that the 6809 and Z80 are pretty close feature wise, although they both have features that the other one lacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162627",
"author": "xmountainxlionx",
"timestamp": "2010-07-27T17:13:51",
"content": "I see some kind of NIC laying on the table…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162628",
"author": "Osgeld",
"timestamp": "2010-07-27T17:18:50",
"content": "video, do it old school use a ps shift register and a dot clock",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162629",
"author": "matt",
"timestamp": "2010-07-27T17:20:06",
"content": "@Ben Ryves Hi Ben! I’ve been a fan since my TI-83 days!Yes, it’s difficult to source obsolete video chips. I’d like to keep my system as “pure” as possible (using no microcontrollers), but, since the video circuitry will be on an expansion card, you will be able to drop in whatever video interface you want. Awesome stuff btw!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162639",
"author": "baobrien",
"timestamp": "2010-07-27T18:17:25",
"content": "@Ben RyvesIt seems a bit pointless to use a Microcontroller more powerful than the CPU.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162640",
"author": "baobrien",
"timestamp": "2010-07-27T18:18:11",
"content": "But yes, the propeller has video generation hardware on each of it’s 8 32-bit cores.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162643",
"author": "Brennan",
"timestamp": "2010-07-27T18:24:10",
"content": "@mattBut can it run Crysis?JK, that’s an awesome project. Congrats!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162648",
"author": "svofski",
"timestamp": "2010-07-27T18:48:36",
"content": "Other OSs (like OS-9, Contiki, etc.) are too complex for this project. It’s just going to be a single-tasking machine like a C64 or Spectrum.But Contiki has a C64 port :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162670",
"author": "Ben Ryves",
"timestamp": "2010-07-27T19:32:02",
"content": "@matt: Thanks! I see your point, and putting it on an expansion card sounds like a good idea if you do find a more powerful video chip in future. I look forwards to seeing how the project progresses!@baobrien: In my project the microcontrollers do execute many more instructions per second but they only have a fraction of the memory that the main CPU has access to. More importantly, I can’t easily develop or run new programs on them without another computer (unless I stuck an interpreter on the microcontroller) whereas the microprocessor has no problems with this task. I like to take advantages of both worlds. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162672",
"author": "nubie",
"timestamp": "2010-07-27T19:33:35",
"content": "I have a terrible reaction to fragrances, ironically while stocking the fragrance section at Target a co-worker handed me a smell I was not allergic to, it was a berry concoction that didn’t contain the noxious ‘fragrance’ listed on the back of nearly every product sold in stores today.I searched in vain through an entire walmart one day for fragrance-free Shampoo, even tried the pet section for pet shampoo (not tested on animals? Or tested on animals?).I am on the fence, awesome hack, but instead motorize the window and turn on an exhaust fan, then shut after air has been completely exchanged.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162682",
"author": "Mikey",
"timestamp": "2010-07-27T19:54:44",
"content": "What an epic game of blackjack! Also amazing 6809 build!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162699",
"author": "osgeld",
"timestamp": "2010-07-27T20:48:06",
"content": "wrong thread nubie",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162729",
"author": "Greycode",
"timestamp": "2010-07-27T22:06:43",
"content": "This was awesome, I need a towel because I just jizzed myself. Great job Matt. I love seeing people do the programming the hard way.This stuff takes me back, I never built a computer, but programming them was fun as hell, and if you can cut your chops on Assembly, you sir are one hell of a geek.The Blackjack game was very nicely done.A question that only people who worked the primitive stuff would know, how does it feel to have 128M of memory? The code sizes between this Blackjack and Blackjack written with today’s machines are not even comparable. I remember when 1K of memory meant something. My first hard drive was a 10 meg hard drive, and I could not figure out how I could use it all. Now, I can sneeze and lose gigs of micro SD cards.Thanks Matt, I feel all warm and fuzzy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162730",
"author": "GuruBuckaroo",
"timestamp": "2010-07-27T22:07:22",
"content": "Ah, the 6809, powerhouse of the Tandy Color Computer (and following II and III models). I loved my CoCo. Throw OS-9 on it and it felt like you could do anything. I actually had a bulletin board running on one of my CoCo II’s for about two years. Excellent processors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162783",
"author": "GCL",
"timestamp": "2010-07-27T23:48:55",
"content": "@Matt,Amazing! Truly amazing. You’ve gone and built something wonderfull.—-@Ben Ryves,What’s wrong with the Z80? Or even the R6502? I taught myself R6502 assembler, its on the same par as M6800/M68B09 assembler. I even worked my way through Z80 stuff for arguing with a CP/M80 (softcard) arrangment for my Apple IIE. The only reason why I’ve got a grouchy laptop staring at me is because technology runs on.—@Matt, I might even build something of a sort myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162785",
"author": "Mikey",
"timestamp": "2010-07-27T23:50:43",
"content": "Holy shit @matt, you programmed the eeprom with switches?! That’s amazing.Also, any chance when you release the src for this machine you might throw down an emulator?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162796",
"author": "Ben Ryves",
"timestamp": "2010-07-28T00:14:43",
"content": "@GCL: There is absolutely nothing wrong with the Z80, else it wouldn’t be such a popular chip for home-made computers (the availability of a ready-made operating system and software from the world of CP/M no doubt helps too). I was not familiar with the 6809, and as such found this an especially interesting project. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162812",
"author": "medwardl",
"timestamp": "2010-07-28T01:01:50",
"content": "neat wonder if you could wire a whole mess of those processors together and build a super computer out of em.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162814",
"author": "lwatcdr",
"timestamp": "2010-07-28T01:11:57",
"content": "@matt Contiki has a C64 port and even a Vic-20 port as well the AVR line.Seems like it would be a good fit.Or you could just port the C64 Kernel to it,Yes I am from the old days. I took a microprocessors course in college that involved the old Heath kit trainers and writing 6800 code with a hex key pad.I ended up writing a cross assembler and simulator in Fortran. I still had to type in the hex print out on the real hardware but debugging was a lot easier.For the Video and software I would be tempted to try and source a VICII and SID chip but that is just because of my roots.Maybe you could hack an ISA slot and use an old VGA or even EGA video board if you could find one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162950",
"author": "nes",
"timestamp": "2010-07-28T09:27:59",
"content": "@medwardl: The 6809E is the multiprocessor variant. You lose the on board oscillator but gain the extra bus signals you need for a multi-master bus. Hitachi made an extended version of this which gained some extra instructions. There were plenty of control systems which used multiple 6809s back in the day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163029",
"author": "WetSmellyDog",
"timestamp": "2010-07-28T15:34:58",
"content": "@Greycode;Back in the day Steve Gibson of Spinrite fame, wrote a screen saver called ChromaZone for Win 3.1 and 95 that was only 100k in size. He did it to prove the point of bloated software due to sloppy programming. If you write in today’s bloated, interpreted languages, it will take up a lot of memory and storage.From the sitehttp://www.grc.com/chroma.htmBecause Steve Gibson wrote it in pure assembly language, it’s ridiculously tiny (about 100K), yet it delivers 100 completely different screen savers, and allows for infinitely more … which YOU create.@nes;I used some 4 axis controllers based on the 6809 back in the early 80s. It was used to control a welding machine doing repairs to nuclear power plants. We had to make elliptical welds inside a pipe to match the inside pipe radius.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163095",
"author": "Eddie",
"timestamp": "2010-07-28T18:09:39",
"content": "What is the simplest, cheap way to add an IDE interface for a hard drive?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163131",
"author": "lwatcdr",
"timestamp": "2010-07-28T19:24:25",
"content": "@WetSmellyDog.100kb? that is a lot of ram for just a screen saver. Now for 100 that isn’t too bad.Even that is massive when you look at say a Timex/Sinclair, vic-20, or an early PET.Take a look at Contiki sometime it is an OS and it only takes a few k.Also assembly language isn’t needed as much as it was. C compilers are very good at optimizing code if he code it self isn’t bloated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163188",
"author": "WetSmellyDog",
"timestamp": "2010-07-28T22:57:30",
"content": "@IwatcdrThe program itself is 100k not what is memory resident. Also this is on a standard X86 PC. I was only replying to the remark of software being large and bloated when it can be small and compact if the programmer does not use large and bloated interpreted programming software.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163270",
"author": "darkore",
"timestamp": "2010-07-29T06:42:08",
"content": "Thanks, this made my day and finally made me decide to build a stand-alone computer too. This is so nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163293",
"author": "cocoman",
"timestamp": "2010-07-29T08:15:08",
"content": "Screw contiki. Port NitrOS-9 to this bad boy…http://www.nitros9.org/documents.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163447",
"author": "Paul Bruner",
"timestamp": "2010-07-29T19:14:44",
"content": "This is GREAT. I just picked up 3 old industrial boards used in wire cutting and splicing all using 6809 electronics (one uses a 6804). Gives me something to do this weekend.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.059398
|
||
https://hackaday.com/2010/07/27/c02-laser-in-your-living-room/
|
C02 Laser In Your Living Room
|
Caleb Kraft
|
[
"Laser Hacks"
] |
[
"c02",
"laser"
] |
[Magx1] has filled his living room with laser-y goodness. You can get tons of build pictures and information from his
Flickr set
. There are many cool aspects of this build, but one that stands out is how he gets his C02. He simply exhales into a balloon. Check out the video after the break to see him melting glass with his laser.
[youtube=http://www.youtube.com/watch?v=_Mf33rZUX0s]
[via
MakeZine
]
| 45
| 44
|
[
{
"comment_id": "162571",
"author": "The Geek",
"timestamp": "2010-07-27T13:59:20",
"content": "Bad ass",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162576",
"author": "Henrik Pedersen",
"timestamp": "2010-07-27T14:16:33",
"content": "FREAKING… AWESOME!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162578",
"author": "Anon",
"timestamp": "2010-07-27T14:22:05",
"content": "Hmm, you’d think it would be easier and more effective to buy some dry ice and collect the gas from that. It may improve the quality of the beam.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162579",
"author": "osgeld",
"timestamp": "2010-07-27T14:37:22",
"content": "or buy some small bottles of it at Xmart (ie for air rifles and whatnot)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162583",
"author": "Entropia",
"timestamp": "2010-07-27T14:48:31",
"content": "Carbon dioxide is CO2, that’s cee-oh-two, not cee-zero-two like it says in the title and in the text.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162588",
"author": "Jamil",
"timestamp": "2010-07-27T14:54:10",
"content": "Even better, going to a paintball shop, getting a CO2 bottle and getting it filled, a good 3000psi of CO2 goodness.Pure CO2 out of the bottle with constant flow output.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162591",
"author": "neorazz",
"timestamp": "2010-07-27T14:58:09",
"content": "but where do you get the glass tubes ?and i think we would all agree to wear our laser safety glasses",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162601",
"author": "Twerpling",
"timestamp": "2010-07-27T15:45:17",
"content": "For those who don’t realize this, only like 10% of the gas in a CO2 laser is CO2. The rest is hydrogen, nitrogen, and helium. Getting the mix right is pretty much the hardest thing about building a laser in my experience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162611",
"author": "eldon",
"timestamp": "2010-07-27T16:18:51",
"content": "any idea on the wattage?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162613",
"author": "James",
"timestamp": "2010-07-27T16:20:20",
"content": "Now THAT is a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162614",
"author": "osgeld",
"timestamp": "2010-07-27T16:21:24",
"content": "not to argue that point cause its somewhat true, but if your just exhaling into the thing it cant really be that hard",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162615",
"author": "zerth",
"timestamp": "2010-07-27T16:34:54",
"content": "You know what else he can do with a homemade CO2 laser? Hold a rock in front of it.With his (remaining?) hand.http://www.youtube.com/watch?v=PilFXdczUiw&",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162620",
"author": "Dosbomber",
"timestamp": "2010-07-27T16:45:00",
"content": "So.. he breathes into a balloon, then uses that in his machine?OMG.. it’s a Breathalaser test!(does it turn different colors depending on alcohol content?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162623",
"author": "svofski",
"timestamp": "2010-07-27T16:57:50",
"content": "Exhale!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162635",
"author": "Terc",
"timestamp": "2010-07-27T18:02:09",
"content": "Wow, that’s cool. Looks a like he’s taking some risks there, but between this and the 6809 computing article, I’ve got to say hackaday has really got a good day going.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162636",
"author": "Patrick",
"timestamp": "2010-07-27T18:05:51",
"content": "@svofskiBreathe with me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162641",
"author": "andrew",
"timestamp": "2010-07-27T18:18:22",
"content": "OMG! I can’t believe he held that thing in his hand. In the first video, he mentions having to continually adjust the valve by hand. Why does he need to do that? Can’t he just set it once and let it run?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162642",
"author": "Torque",
"timestamp": "2010-07-27T18:19:52",
"content": "Doesn’t seem possible to make it this far without the obligatory, so I’ll satirize it.That’s not a hack, he just made a different version of something that already exists in a different way out of inferior supplies, and why not just go down to your local industrial gas supply and buy a bottle of laser gas?!?Seriously though, awesome hack, I’ve Bern looking for something useful to do with all that exhalation I’ve been wasting .)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162645",
"author": "keystoneclimber",
"timestamp": "2010-07-27T18:33:51",
"content": "Very cool. On a side note, I sure hope J-B Weld kicked him some dough for all the plugs he gave them!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162646",
"author": "emilio",
"timestamp": "2010-07-27T18:35:26",
"content": "lol you people are focusing on the fact that HE DIDN’T BUY THE GAS?! do you people remember what web site you’re on? this isn’t buysomestuffaday.com or easypremadeprojectsaday.com.he did it HIMSELF. he found a free, effective source for a chemical to MAKE A LASER. FROM HIS BREATH.bonus: mad science with a Southern accent (OK, Southeastern American for the cheeky brits out there). searing infrared death with a touch of Southern hospitality! can it cook bacon?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162647",
"author": "Kyle",
"timestamp": "2010-07-27T18:47:16",
"content": "That is awesome. Using your own lungs as a CO2 source. That is a hack. Nicely done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162691",
"author": "zool",
"timestamp": "2010-07-27T20:24:19",
"content": "now make a laser blow ‘dart’ gun",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162709",
"author": "zerth",
"timestamp": "2010-07-27T21:29:59",
"content": "@andrewThe balloon varies greatly in pressure as it empties and so he doesn’t have a constant flow rate, thus fiddling with the valve.On the other hand, he achieved an awesome focus.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162710",
"author": "osgeld",
"timestamp": "2010-07-27T21:34:24",
"content": "emilio, calm down there killer",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162711",
"author": "MrX",
"timestamp": "2010-07-27T21:36:46",
"content": "+2 for exhaled CO2, this is a genial idea.+1 for overall and working setup.-5 for lack of safety. That thing is infrared and in the scale of Watts (not mW). The wavelength does not get affected by optical properties of glass (that’s why he can easily cut it). That’s a safety advantage compared to lower wavelength lasers because the laser beam doesn’t get affected by the lens on our eyes and thus not focused on our retina, which can permanently damage it. However that doesn’t prevent you from damaging the cornea and iris.This is stupid, he cannot really see laser reflections, he is endangering his eyes.Always remember! You can heal burnt skin, but not your eyes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162726",
"author": "bothersaidpooh",
"timestamp": "2010-07-27T21:57:57",
"content": "also, with high power lasers it does not make any difference if the wavelength is focussed or not, the laser light will effectively “cook” the cornea and lens of the eye in short order even with a glancing reflection, as the eye has no way to dissipate this much heat energy.a mild form of this can be seen when working outside on a hot day, upon returning indoors vision may take hours to recover accompanied with discomfort similar to “arc eye” a few hours later.Same effect can also sometimes be seen with badly made infrared room heaters, especially at close range.last time i checked the safety limit for microwaves was something like 5mW/cm2 acceptable leakage, primarily due to the cataract causing potential.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162738",
"author": "Greycode",
"timestamp": "2010-07-27T22:22:40",
"content": "Today was a good day on HaD. Two kick ass projects. I must admit that the Southern accent made me proud. And of course that thing can cook bacon, why else build a CO2 laser in your home?Laser = cooked things. And one down note, holding rock in front of laser is going to result in Laser = Cooked hand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162739",
"author": "MC",
"timestamp": "2010-07-27T22:24:00",
"content": "Congratulations – and like earlier comments – please take care with reflections and other side-issues. Thi is high-powered IR – not nice to handle casually.I had all the plans and many of the parts to do something similar about 20 years ago, but realised the other dangers and complexities of doing it ‘right’.My target was a 20W CO2 (IR) rig – but the safety glasses etc were not available over the counter back then, and I realised my age was a dangerous factor (early 20’s) and I still have my eyes (although they’re a bit older now!)Cheers – and great work. I love the exhaled CO2 – never thought that would work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162755",
"author": "Drew",
"timestamp": "2010-07-27T23:12:01",
"content": "M-m-m-m-m-m-MONSTER HACK!Before this, I would have thought “only GOD could turn it’s breath into a laser”This man is clearly GOD. I bow to thee.Seriously, if anyone ever doubts the power of what mankind has achieved thanks to the information capability of anyone with an internet connection, I am going to directly refer them to this man. I am awestruck that someone could turn their own breath into a F*#KING LASER!This, making your nixie tubes, and 200 mile RF transmitter- Hackaday is on college engineering final project level today!THIS, GENTELMEN, IS A HACK. I salute you sir!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162758",
"author": "MS3FGX",
"timestamp": "2010-07-27T23:21:38",
"content": "This is perhaps the most perfect example of a hack that I have seen in quite some time. Using your own naturally exhaled CO2 as a lasing medium, incredible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162793",
"author": "Leithoa",
"timestamp": "2010-07-28T00:04:34",
"content": "Regarding the constant fiddling w/ the needle valve.Perhaps some sort of check valve/pressure sensor combo could be put inline so that the laser is only lasing when there is gas flowing at the right pressure.I would think that a balloon would provide a fairly consistance pressure over the begining and middle portions of its duration since the pressure would largely be determined by the durometer of the rubber and I would think this would be constant until the balloon is near its original shape. Perhaps a larger balloon is in order.Or another cheap source is vinegar and baking soda, or any other chemical reaction that liberates CO2. Although I would imagine that if you were running this for any appreciable duty cycle bottled gas would be the cheapest and most hassle free route.In short he needs to automate the gas tuning mechanism now that the Laser part is finished",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162803",
"author": "Power Supply",
"timestamp": "2010-07-28T00:48:08",
"content": "2 other ways of getting the CO2 and removing the oxygen would be to inhale and exhale the contents of the balloon a few times. Apparently we only use about 16% of the oxygen we inhale. Another way would be to chuck the balloon onto the end of a metal or glass funnel, light a small candle and then put the funnel upside down over the candle, making sure to hold pressure on so the expanding gas doesn’t leek underneath. And wait a bit until the candle goes out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162822",
"author": "cgmark",
"timestamp": "2010-07-28T01:34:15",
"content": "You can use the DIY method for creating co2. I do it for growing aquarium plants. It will produce co2 for weeks. Here is all you need.empty 2 liter soda bottle.2 cups sugar1 packet of baking yeastFill bottle about 90% full with warm water ( not hot, hot will kill yeast), then add the sugar.Cap and shake till dissolved.mix 1 cup warm water with 1/4 tsp yeast.When mixed pour into 2 liter bottle.Give it about an hour , 2 at most and it will bubble, once it starts it will really take off . Do not cap it and make sure you have a way to store the co2 or use it. If you cap the bottle it could explode. Yeast are very good at converting sugars into CO2. Just ask beer drinkers !Varying the amount of sugar and yeast will vary the output rate of Co2. With the above easurements you get about 25 bubbles of 95% Co2 per minute and it will continue at that rate for about 2 weeks.I use a soldering iron to melt a hole in the 2 liter cap and insert a vinyl tube then seal around it with hot glue.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1164075",
"author": "sparhawk817",
"timestamp": "2014-01-15T22:38:48",
"content": "i know i’m 4 years too late, but your comment is almost a hack in and of itself. using something made to bake bread to make a laser or plant air? pretty badass.",
"parent_id": "162822",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162862",
"author": "Alan Parekh",
"timestamp": "2010-07-28T03:50:05",
"content": "Wow, that is an amazing hack!How many people can say that they created the gas for their laser system themselves with no equipment!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162962",
"author": "blue carbuncle",
"timestamp": "2010-07-28T10:14:42",
"content": "From Real Genius: “Always check your optics” :)Awesome build and grrrreeeeatt post :)“This is God, Kent”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162964",
"author": "Tachikoma",
"timestamp": "2010-07-28T10:30:13",
"content": "All it needs now is a shark!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163068",
"author": "Anonymous Coward",
"timestamp": "2010-07-28T17:09:12",
"content": "What I like about this hack is that its a big freekin’ laser without any of the complicated glasswork that normally goes into that kind of thing. There’s no glasswork at all, just the tubes themselves. I would have never even attempted to use JB weld for something like this, but now that I see he’s getting results I am much more motivated to try something like this myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163145",
"author": "whatwhatinthebutt",
"timestamp": "2010-07-28T20:34:49",
"content": "cool laser! nice exploit of human breath. there are easier ways to cuts glass tubing. if you score ONLY a 1/4″ -1/2″, spit on it or wet the score, then pull pressure on both sides of tubing with the score facing outward you’ll get a clean break. Although the glass tubing looks like borosilica (pyrex) it’s prob a soft glass because it was from a light bulb making it more shocky. this would be interesting to take moretti stringers and shape them with this laser or boro stringers just to say this was made with a laser. . .this guy might be a drug addict. the baking soda on the floor, the thin wall tubing that is notorious for making crack/meth pipes, the light bulb in the beginning is also notorious for freebasing drugs. the southern accent doesn’t help either when all things considered but I’m working real hard to not sterotype southern accented honkys",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163147",
"author": "whatwhatinthebutt",
"timestamp": "2010-07-28T20:37:00",
"content": "break the pressure!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163301",
"author": "mirozbiro",
"timestamp": "2010-07-29T08:56:25",
"content": "Why I do not see a description and principles? I suppose, he must pump the transitions, has to have extremely well aligned (semi-transparent) mirrors, cool the pumping source… Bunch of pictures, videos, breathing co2, melting glass, light on a rock – I care more about principles….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163771",
"author": "GuiltyPixel",
"timestamp": "2010-07-30T09:07:36",
"content": "Yeah, I’m with mirozbiro on this one. More info on the build, less “ooh shiny”. While it is a cool hack, the coverage of the hack was pitiful. I’d certainly be more interested in a discussion of the hack, not the outcome.As for the epidemic of doomsayers, wtf are you doing reading a blog about hacking if you’re so scared of the world? Go play with your Easy Button and buy what the TV tells you to, and leave this art to the artists. Anyone competent enough to build a working CO2 laser knows what they need to do to protect their eyes, and anyone who doesn’t will probably take notice of the hundreds of warnings posted every-freaking-where during their research. Why is it that every time there is a hack more dangerous than a rubber spoon, there are 25 comments on how “DANGEROUS!!!” it is? No effing schnitzel its dangerous, so is swimming, riding a bus in Los Angeles, breathing air in Beijing, or living in Israel, get the fork over it. Maybe you’ve all watched Final Destination one too many times… Go wrap yourselves in bubble wrap and hide in the closet. But make sure you have a portable oxygen generator, and don’t wrap the bubble wrap over your face! Check the closet for spiders, mosquitos (malaria you know) and venomous snakes which may have been transported from southeast Asia if someone from there moved into your area recently (they hide in boxes, sneaking across our border to prey on unsuspecting blog readers!). Quit spamming the comments with your attempt to show others your limited and misinformed understanding of the information presented by repeatedly stating the obvious as if it were caused by some form of Tourette Syndrome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163859",
"author": "MrX",
"timestamp": "2010-07-30T17:57:55",
"content": "@GuiltyPixelTL;DRYou are a m0r0n. He just needed regular glass goggles to protect the eyes (glass is opaque to infrared), nothing more.Your post bring us exactly 0% of technical insight and information about the hack; so pleasego ranting to somewhere else and leave us, knowledgeable people, discuss the hack itself.http://www.penny-arcade.com/comic/2004/3/19/@mirozbiroThe mirrors need some special coating (like gold or aluminium, it depends on the wavelength), since IR doesn’t reflect on regular glass mirrors.To align them, you can simply use another laser.Regarding the pump, I guess the pressure provided by the balloon (where the gas mix is) is enough. He seems to be using a axial flow setup, where the the gas is pumped into one end and let free in the other end through a valve. Like others said, you can control the pressure on this valve and increase efficiency/power throughput.I really liked the idea of using exhaled air. Makes me wanting to build one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164235",
"author": "Nitori",
"timestamp": "2010-07-31T16:07:15",
"content": "I’ve built lasers before but only with purchased tubes this makes me want to give building my own tube a try.I knew CO2 lasers where forgiving but I never knew one could work with oxygen and water vapor contaminating the lasing gas so much for the requirement of them saying you need 99.99% pure gases.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "605763",
"author": "Shelton Rho",
"timestamp": "2012-03-17T14:26:43",
"content": "Patrick: you say the only thing you wanted “was for Lee Lansing to cease to be Mayor. That was my judgement as a voter based on all available information.”But Patrick, you have repeatedly made comments, or ignored facts, that would suggest you DID NOT have “all the available information” and when various people tried to point things out to you … times, council meetings, closed session tapes, recusals, 700 pp of memos backing up the Everett Report, you wouldn’t come back on the issue, you just have your bedrock POV.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.930705
|
||
https://hackaday.com/2010/07/26/web-enabled-led-pegboard/
|
Web-enabled LED Pegboard
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"frame",
"led matrix",
"marquee",
"pegboard",
"web"
] |
[Norm Santos]
whipped up an LED light board
that you can draw on through their web interface. We tried it out but unfortunately the live feed is currently offline. That doesn’t diminish our appreciation for the time-lapse build video after the break. Indeed it was a mountain of hot glueing and a couple of days of soldering. Our only beef is that for every LED on the board there are three empty peg holes. To us this is just begging to be augmented with blue, green, and white LEDs for
a more spectacular result
. What they have now encompases 350 LEDs managed by five microcontrollers, which took about two days to solder (for five people) and to hammer out some code.
[vimeo=http://vimeo.com/13599380]
| 14
| 14
|
[
{
"comment_id": "162353",
"author": "MrCung",
"timestamp": "2010-07-26T21:49:23",
"content": "Haha the banana suit is awesome :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162354",
"author": "Anon",
"timestamp": "2010-07-26T21:55:13",
"content": "Is that pedobear?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162369",
"author": "Dan Fruzzetti",
"timestamp": "2010-07-26T22:43:53",
"content": "This could be made cheap and used in garages today cheaply and effectively, or more expensively with RFID tagging. “Computer, where is my small locking plier?”I mean, it’s pegboard, right? It doesn’t have to turn into a display. It has to turn into my garage wall material and the same in garages of tons of others like me.Or you could set maintenance intervals on the computer that drives it. “Every six months, blink rapidly on the spot for my mini compressor so I perform required maintenance.”Man.. That pegboard really would make… the best, cheapest light-up pegboard, ever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162370",
"author": "Eric",
"timestamp": "2010-07-26T22:48:33",
"content": "Now just make it with RGB LEDS, and place the LED’s in Plexiglas or Leksan",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162379",
"author": "Anonymous",
"timestamp": "2010-07-26T23:24:03",
"content": "10 minute long video and not any of it shows the thing working.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162382",
"author": "KennyC",
"timestamp": "2010-07-26T23:44:20",
"content": "@Anonymous Not sure what video you watched, but the one above is less than 6 minutes long and it’s working at the end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162383",
"author": "Marco",
"timestamp": "2010-07-26T23:46:34",
"content": "Only 2 bottles of coke? They must have fudged the numbers… Also I find dancing bananas slightly disturbing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162386",
"author": "Norm",
"timestamp": "2010-07-27T00:06:36",
"content": "The live cam is back up for a bit. Also thanks everyone for the awesome drawings. You are all awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162401",
"author": "sM10sM20",
"timestamp": "2010-07-27T00:58:33",
"content": "Nothing like a good time lapse video >:D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162408",
"author": "eric",
"timestamp": "2010-07-27T01:13:15",
"content": "*encompasses*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162471",
"author": "Dosbomber",
"timestamp": "2010-07-27T06:17:38",
"content": "Great video, although hard to focus on the actual project… I think I spent more time watching that plate of magically disappearing and reappearing Cheeze-It’s.…also the banana girl had me a little freaked out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162516",
"author": "Trukkle",
"timestamp": "2010-07-27T11:04:08",
"content": "Dancing Bannana girl was great, I want a gif of her. I love how the guy in orange has proof he worked almost the whole time, while the guy in light-blue lazed around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162684",
"author": "Mikey",
"timestamp": "2010-07-27T20:07:57",
"content": "Would’ve been nice to see less dancing bananas and pedo bears, and more working LED enabled peg boards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162823",
"author": "Greycode",
"timestamp": "2010-07-28T01:36:07",
"content": "Yeah, project, two thumbs up, the banana was totally distracting from the point the guy was wearing it, till the little dance time lapse demo the girl was doing. I like how the guy finally got some common sense and ditched the costume.You know, there are a lot of good ideas for a lit pegboard. I never thought about having it with a house layout and asking it where your keys were. That could be mega handy.Besides the banana part, that was a very good time lapse.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,398.982221
|
||
https://hackaday.com/2010/07/26/more-automated-wire-cutting/
|
More Automated Wire Cutting
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"automated",
"wire",
"wire cutter"
] |
[MC] realized he had forgotten about an order for 2000 cut wires that was now due in a few days. Rather than dropping everything to complete the task, he whipped up this
machine to cut the wires for him
. A PIC 16F628 board drives a couple of battery-powered drill motors. One of them powers two lawnmower wheels for the feed, and the other turns a pin that squeezes the wire cutters. It’s not as advanced as
the cutter/stripper from last year
, but it gets the job done.
After the break you can see it does what is intended. The final product took about $80 and 12 hours of his time to build. [MC’s] planned improvements include more accurate wire measurement, plus an LCD and button based user interface.
[youtube=http://www.youtube.com/watch?v=i-6niamGsu4]
| 33
| 33
|
[
{
"comment_id": "162301",
"author": "makapuf",
"timestamp": "2010-07-26T19:18:04",
"content": "12 hours is 21.6 seconds / wire. Not bad if you count in the fun of building it vs tediousness of cutting the wires directly ; Not exactly a time saver but at least not a waste of time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162302",
"author": "mongrelbitch",
"timestamp": "2010-07-26T19:19:00",
"content": "omg its slow",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162304",
"author": "Concino",
"timestamp": "2010-07-26T19:33:16",
"content": "Love it! Simple, smart, gets the job done. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162309",
"author": "fotoflojoe",
"timestamp": "2010-07-26T19:44:55",
"content": "I’d only impressed if they were stripped, bundled and labelled.Kidding! Kidding !:-)Great job! There’s something elegantly “Golbergian” about that cutter wheel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162311",
"author": "Chris",
"timestamp": "2010-07-26T19:52:35",
"content": "Indeed it is lovely and simple but surely stripping the wires is the time consuming bit!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162321",
"author": "D_",
"timestamp": "2010-07-26T20:13:33",
"content": "In the Event HAD is keeping track or or counting, I liked this. Keep posting similar if you find them.@Chris. Evidently this job order didn’t require the wire ends to be stripped. I that he has aready built a machine that cuts and strip wire, he should build a machine that’s more adaptable wire type and job needs. When he is not rushed to meet a deadline, than gain that might me when he is more creative. I wouldn’t know. As long as he and those expecting the wire on time are happy, that’s all that matters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162323",
"author": "svofski",
"timestamp": "2010-07-26T20:20:01",
"content": "Beautiful!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162332",
"author": "rallen71366",
"timestamp": "2010-07-26T20:43:48",
"content": "I would call this capital equipment, and even though he could maybe work faster by hand, now he can set it to working while he’s doing something else. It’s his robotic slave! I love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162342",
"author": "tyco",
"timestamp": "2010-07-26T21:18:42",
"content": "@rallen:You’d be surprised how often people think that if a person can do it faster than a machine, there’s no reason to have a machine do it. Complete nonsense, since a machine can of course do it unattended. A longer job with no work on a human’s part is almost always better than a quicker job you have to pay someone to do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162352",
"author": "M4CGYV3R",
"timestamp": "2010-07-26T21:45:51",
"content": "Why did he reduce the drive motor speed so much? This thing could fly if it even went 4x as fast. Also, who orders 2000 cut wires? Isn’t that sort of weird?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162356",
"author": "SelfSilent",
"timestamp": "2010-07-26T22:01:37",
"content": "@tyco. That’s as maybe but it would only take an hour to manually cut that many wires. Even if it took 2 hours you have still saved 10 hours making this. I’d say it’s worth doing if it saves time in the long run. That might take a few orders to accomplish.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162362",
"author": "spyder_21",
"timestamp": "2010-07-26T22:20:48",
"content": "@ tyco,You speak like all other companies. Yeah it is cheaper to have a bot do it, than a human. No labor costs, no medical coverage, no striking, no slacking on the job. But you also realize with every robot created to do a humans job, that is 1 less job for us.I understand this a automated wire-cutter and I dont know why he would hire a person just to cut wires. But I was talking about in the masses.Plus if it was faster in the long run to cut it by hand (Which it would of been), then he would of been $80 richer, and still have it done on time. If it took him 12 hours to build it, and you figured that into man hours for cutting the wires. That means for a 12 hour period he would of had to cut a wire every 21 sec.He already took the time to build the machine, why not just cut the wires now. And take the time to build a machine that can do more. He wasted 12hours of his time with this.Great build though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162374",
"author": "takfly",
"timestamp": "2010-07-26T23:10:52",
"content": "I’m impressed… So what if it’s slow, sometimes the result isn’t important… The fact is he now has his own wire cutting machine which he can look at and think “I made that!” and when he’s got a few hours he can make improvements if he feels the need…. $80 well spent!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162384",
"author": "Patrick",
"timestamp": "2010-07-26T23:56:36",
"content": "I don’t think he wasted his time at all. Next time someone orders cut wires, he’ll already have this machine ready to rock.Also, while it’s logically true that each robot doing a job displaces a human, it’s also true that each robot built is going to require maintenance, parts and programming. That should generate at least as many jobs as it displaces; they’ll just be more skilled jobs. I think most people would agree that the move toward a service-based economy in the Western world means fewer low-skill jobs and more high-skill jobs. Good or bad, that’s the reality. Now if only we could get kids to realize this before they drop out of school…And finally, on the topic: I like this simple, solid build. It’s clean and it gets the job done. Could be faster, but that’s what tweaking is for.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162399",
"author": "stib",
"timestamp": "2010-07-27T00:48:39",
"content": "If robots replace humans for tasks like cutting wires that’s a good thing. Think of the life times that are wasted doing mundane crap like this. If the tedious stuff was all done by robots that would only leave the fun stuff for humans to do (until they take over that is). The problem is not the machines, it’s the economics. As we invent ourselves out of mundane jobs we also have to invent economic systems that don’t rely on payinghumans to do robot’s work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162414",
"author": "Haku",
"timestamp": "2010-07-27T01:31:34",
"content": "Brilliant!If there’s an LCD screen with length options I hope there’s one option that’s simply labelled “this long” because of the amount of times I’ve been asked to make a cable with plug X on one end and plug Y on the other and the length isn’t mentioned or just “this long”…Hmm, maybe we (the internet collective) should try and find out what “this long” actually is in cm/inch by everyone inputting their measurement of “this long” into a simple database to find out the average.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162432",
"author": "Marc",
"timestamp": "2010-07-27T03:01:45",
"content": "Not a waste at all… he spent 12+ hours doing something creative that he enjoyed, AND it freed him from the mindless drudgery of “measure, cut… measure, cut…, measure…”. He “spent” less than $7/hr and probably got lots of enjoyment from the puzzle. If it was JUST about the Benjamins, I would not spend ANY time doing Sudoku, surfing Hack-a-day, watching TV, etc. Cookies? There’s no profit in that! If you want to whine about putting humans out of work, then wallow in automated, self-check-out kiosks at the FoodMart, or robots in the auto industry. Heck, whine about the 25 cent sneakers that sell for $100+ AND the factories that used to employ families for generations, now out-sourced. Aw heck, just whine.I would like to see close-ups of the drill-to-wheel interface… from the vid, it looks like a simple friction fit. What’s controlling the rotations or measuring the length? Where’s my Captain’s Wafers?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162452",
"author": "MC",
"timestamp": "2010-07-27T04:24:57",
"content": "@Patrick – you hit the nail on the head.I tossed the idea of doing them by hand (I’ve done it before) – as I assemble custom embedded controllers for an order.I just didn’t look forward to sitting at a bench, for a couple of man-hours (imn reality more real-world hours!) to get the result – and as you guessed – I have it again for next time.Averyone’s comments are valid – I wanted to do somtehing creative other than cut wires on a cold winter weekend, and this was it.And yes – there are a lot of things I learned which will make the next iteration somewhat faster and more elegant!Cheers for the feedback, and all power to the ‘real’ hackers of the world!P.S. ‘This Long’ is directly proportional the length of wet string when it has dried out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162467",
"author": "pRoFlT",
"timestamp": "2010-07-27T05:57:34",
"content": "I guess im pamperd. With all the automatic wire cutters at work, i dont think i need to cut a wire by hand again. Even connector crimpers….ahh automation is the life. Plus i put workers out of a job daily with automated fixtures. I kind of feel bad about it. not too much though. Because, even though a machine is automatic doesn’t mean you dont need someone to start and stop the thing. Circuit boards aren’t going to jump into the BON (bed of nails) fixtures and run there test…..Anyways, faster would of been nice. more voltage to the motors or different gearing maybe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162469",
"author": "Dosbomber",
"timestamp": "2010-07-27T06:03:21",
"content": "I’ve been wanting to build something like this for awhile now, just keep not having time for it.I was planning to use a PIC to control the feed, probably using steppers, with an LCD to help the user select the wire length (1 inch or more, in .100″ increments), and select if they want one or both ends stripped (thermal stripper), with an output bin so they’re sort of bundled. I was planning something a lot smaller though, designed for 22ga AWG solid core, basically for jumper wires.This build might inspire me to actually get started. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162500",
"author": "MC",
"timestamp": "2010-07-27T10:21:05",
"content": "For anyone that’s going to attempt this…The things to look out for are :-– Slip between the motors and driven surfaces.– Slip between the tyres and the wire.– Sufficient torque to operate the cutters.– having a big enough DC supply to sustain the motor load current over a long period.In the next iteration, I’ll probably add a spring-loaded idler to measure the feed, and a shear type cutter (possibly double-headed to cut on both the up and down phases of the blade).– or go to the moving V-blade style of cutter used in pro cut & strip machines.… and yes – I will finish the job and put an LCD GUI on the rig. Time won out on this build!Hmmm – those $1500 built & tested units are starting to look pretty good!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162563",
"author": "packradt",
"timestamp": "2010-07-27T13:33:06",
"content": "Wow-this is excellent for what it does. The surplus electronics place I worked had a half-ton machine rusting on the back dock, from a Magnavox plant in TN that was dedicated to this exact task in high speed (it cut and stripped narrow gage wire for board stuffing at high speed) this is not bad at all for something that fits on the work bench.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162632",
"author": "Lobo",
"timestamp": "2010-07-27T17:43:40",
"content": "Hang on, but they’re not stripped at either end! Only kidding! I Love the slow, purposeful snipping action – just how I’d be @ ~3am doing this manually!Love it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162798",
"author": "Leithoa",
"timestamp": "2010-07-28T00:17:42",
"content": "For the next iteration you should use a disc cutter like you see on the ends of extrusion machines. Where one edge of the cutter is the wire guide and the other is a plate with N holes drilled in it that line up with the guide, then when the wire is at the appropriate length the disc rotates N/360* to cut the wire and line up the next hole.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163688",
"author": "Drake",
"timestamp": "2010-07-30T02:58:37",
"content": "@MCThere are motors with quadrane encoders built into them. Instead of adding another pulley that may have slop directly mount to the output of the motor.For your drive wheel a V groove would be best. If those wheels are solid rubber or plastic a heated razer blade will do the trick. Hold it in one position and allow the mechanism to rotate so you can concentrate on keeping it at the same position.You may want to consider 2 Idlers. One on the entrance and one on the exit. Mount them so that the wire will be forced to make a hump shape which should reduce slip.If you find you need more torque gears always help.The power supply is a tricky one. My projects use motorcycle batteries and car batteries but you probably want a power supply off of the mains. Only readily available / cheap supply that I can think of would be pc power supplies. Get several of them and wire them in parallel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163697",
"author": "MC",
"timestamp": "2010-07-30T03:15:22",
"content": "Thanks @DRAKE – all valid suggestionsQUAD Encoders on feed motor shaft – unfortunately does not give closed-loop feedback on what the wire is actally doing. slip etc is not accounted for.V-groove – already in the unit you are watching.2 Idlers – not sure how that can reduce slip?Gears always help – very true. Add cost & complexity – and reduce speed, but always worth considering to get the result.Power supply – I originally used a small battery bank with a constant charger – but after about 20 minutes operation the voltage began to drop to the extent that the motors labored during the heavy load periods – and of course lost some feed length (aargh!) As this was a quickie solution – instead of building feedback on the wire feed length, I simply stuffed a 7.2V 20A mains supply on the job. Problem solved – but solution noted, and next iteration will have closed loop feedback on the wire drive!Cheers & thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163783",
"author": "Drake",
"timestamp": "2010-07-30T11:59:11",
"content": "@MCI use motor controllers with built in closed loop via quad or potentiometer.Set up parameters (eg pulse per revolution or delta resistance per revolution) then send it commands to go a set distance.The two pulleys would be one on each side. Same diameter but put in such a way that the wire must go down a bit then back up over the pulley then back down. This will increase the surface area the wire comes in contact with increasing the friction and decreasing the slip.Another thing comes to mind would be some of the non-slip material used on shelves may help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164201",
"author": "Einomies",
"timestamp": "2010-07-31T13:27:37",
"content": "The guy is thinking too complex.I would have taken a piece of wood, hammered two nails into it at the specified distance, and spun the wire from the spool on the nails a hundred times.Then all you need is strong cutters to clip the wires all at once. You only need to repeat the process ten times because each time produces 200 pieces of wire. The whole job would have been over in less than half an hour.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164207",
"author": "MC",
"timestamp": "2010-07-31T14:05:11",
"content": "@Einomies: I like the way you think, but I’d also hate to see the end result. Wires would all be +/-5mm or more, and skewed end cuts… need to be re-trimmed again to length for square ends and eventually termination.Although a machete might be able to make cleaner cuts across the 200 pieces than hand cutters. May be worth considering instead of shear cutter blades!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "422214",
"author": "John",
"timestamp": "2011-07-24T16:40:35",
"content": "@MC: Do you sell these? I’m looking for a solution very similar to this, but don’t need the $1500 solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "422302",
"author": "MC",
"timestamp": "2011-07-24T20:58:49",
"content": "Sorry – this was done one-off for a specific job.If you’re in Melbourne Australia – I’ll give it to you! and perhaps modify it to your application.Good luck",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "902873",
"author": "Donnie",
"timestamp": "2012-12-12T23:49:11",
"content": "Veeery cool. There is another one of these DIY wire cutters at the link here:http://blog.makezine.com/2009/01/03/diy-wire-cutter-and-stripper/. I own one of these, but a commercial model, something like this:http://www.eraser.com/products/wire-cable-strippers-product/blade-strippers/cs800-wire-cut-strip-120v/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3404497",
"author": "David Fitzgerald",
"timestamp": "2017-02-09T16:45:26",
"content": "Is there any companies that actually make a wire cutter with an integrated microcontroller? I have been searching for so long, I need something that would attach to a gantry type positioning system. Any resources would be greatly appreciated!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.122464
|
||
https://hackaday.com/2010/07/26/hope-badge-proximity-sensor/
|
HOPE Badge Proximity Sensor
|
Mike Szczys
|
[
"cons"
] |
[
"badge",
"geiger counter",
"hope",
"msp430",
"proximity"
] |
The HOPE conference was last weekend and [Nathan] spent some time with fellow members of Makers Local 256 developing
this badge proximity sensor
. They took one of the HOPE badges, which
have a radio on board for the tracking network
, and wrote code for its MSP430 to detect other badges nearby. It uses a Geiger counter they brought with them as an enclosure, re-purposing the analog gauge to reflect the level of active radio signals in the area. You’ll find their demo clip embedded after the break.
If you managed to get your hands on one of these badges, don’t be shy about sharing your hacks.
We want to see them
.
[youtube=http://www.youtube.com/watch?v=7quhFYJxMok&feature=player_embedded]
| 14
| 14
|
[
{
"comment_id": "162288",
"author": "allon",
"timestamp": "2010-07-26T18:36:44",
"content": "It’s not a geiger counter; it’s an ion chamber survey meter; the sensor is mounted inside (note the lack of tube or window).http://www.civildefensemuseum.com/cdmuseum2/radkits/cdv715.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162341",
"author": "zool",
"timestamp": "2010-07-26T21:14:47",
"content": "video says “an error occured, please try again later.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162343",
"author": "minipimmer",
"timestamp": "2010-07-26T21:18:47",
"content": "The idea is pretty cool, but putting the badge inside a metal enclousure should weaken the signal strength it gets from the badges, am I right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162351",
"author": "M4CGYV3R",
"timestamp": "2010-07-26T21:42:06",
"content": "HOPE is over. DefCon is this weekend.Next, please. I want to see what they came up with for the DC18 “No Drama” badge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162365",
"author": "asheets",
"timestamp": "2010-07-26T22:27:14",
"content": "@allon — either way, what a damn shame to tear apart a Victoreen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162366",
"author": "blue carbuncle",
"timestamp": "2010-07-26T22:31:45",
"content": "Can I addend this to the questionaire of things I don’t care about/want to see on HAD. I totally forgot about HOPE badges lol. BTW, the new content is going in the right direction imho otherwise :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162410",
"author": "anon",
"timestamp": "2010-07-27T01:23:58",
"content": "I have a Victoreen Model 3A. It’s an amazing piece of 60’s era engineering and manufacturing. The quality of the construction coupled with the information contained in the manual show they were built to last and to be reliable. Good since they were supposed to be used by first responders in the even of a nuclear disaster of any origin.I just wish I had the balls to tear into in a figure out why it’s reading high (like 100 R/hr in my apartment). I’m pretty sure the ion chamber is good. I just don’t have a Co-60 source strong enough laying around to calibrate it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162419",
"author": "grenadier",
"timestamp": "2010-07-27T01:50:50",
"content": "@anonIf it was reading 100R/h you’d be dead. I wouldn’t bother fixing it. These things are all but useless for any practical measurement.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162426",
"author": "MS3FGX",
"timestamp": "2010-07-27T02:35:52",
"content": "I have one of those too. It was ~$20 at a computer show and I couldn’t pass it up, but they are indeed worthless beyond their use as a first response detector in the event of a nuclear blast.Basically, if the needle moves, that indicates there is enough radiation in the area that you shouldn’t be outside if you can at all help it. The high end of the 1x scale, 5 R/h, is about the highest radiation the human body can deal with. At 50 R/h (the highest this meter can detect), your well on your way to radiation sickness so the exact measurement is probably the least of your worries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162430",
"author": "anon",
"timestamp": "2010-07-27T02:45:40",
"content": "@grenadierOh I know it’s not practical; however, I do enjoy calibrated sensors and indicators.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162540",
"author": "Noobixide",
"timestamp": "2010-07-27T12:38:03",
"content": "I bought an old victoreen at the Galveston Island surplus store. Had the original manual, which has a stupidly awesome amount of detail. The insides are toast, so I am going to use it to make something one day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162625",
"author": "SkyDog",
"timestamp": "2010-07-27T17:10:09",
"content": "Heh. Nice hack! I, like many, have been waiting on my TI Launchpad kit(s) to come in. Glad to see you guys were able to throw something together and put it in an attractive case to boot. I have one of those yellow handheld devices in my office that my boss gave to me. I’d love to either fix it, or retrofit it with something interesting like this. Maybe wire in a potentiometer in the handle so I can have my own personal “idiot detector” to wander around the office with. Hmmmmm..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162953",
"author": "Johnnymoha",
"timestamp": "2010-07-28T09:47:24",
"content": "Its cool to see some local folks getting mentioned on my favorite hack site. Good job guys.^^Garner?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163872",
"author": "CrashCart",
"timestamp": "2010-07-30T19:02:30",
"content": "Thanks for the comments.This WAS a fairly easy hack I’ll admit. but the results were a lot of fun and interesting. so i stand by it.@minipimmer – yes, the case cuts the signal down, but it would still respond to badges at close (~3ft) range. when wandering around the hotel i just left the case off.@asheets – nothing about the original equipment has been destroyed. In fact, it was one of the original goals when I made this as a wifi detector. It still functions for it’s original purpose. just pop in the battery for that circuit.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.243882
|
||
https://hackaday.com/2010/07/26/ds1307-breakout-board/
|
DS1307 Breakout Board
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"adafruit",
"breakout",
"chronodot",
"ds1307",
"rtc"
] |
Adafruit’s got a handy
breakout board for the DS1307 RTC
available. This chip isn’t nearly as accurate as the DS3231 used in
the Chronodot
but it’s quite a bit cheaper. The breakout makes this easy to breadboard or plug into an Arduino and has everything you need; clock crystal, a backup battery, filtering capacitor, and pull-up resistors. Our favorite part is that Adafruit designs are open source so you can etch the board yourself if you
checkout the files from their git repository
. This will make a great addition to our
prototyping hardware collection
.
Incidentally, we were surprised to see the choice of 2.2k resistors for the I2C bus pull-ups. We were under the impression that 4.7k was a standard value here. We’d love to hear your thoughts on this in the comments.
[via
Dangerous Prototypes
]
| 28
| 28
|
[
{
"comment_id": "162232",
"author": "biozz",
"timestamp": "2010-07-26T16:05:01",
"content": "i use the 1hz crystal oscillator modified form an analog clock you covered earlier for basic operations and it saves pins",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162241",
"author": "osgeld",
"timestamp": "2010-07-26T16:25:28",
"content": "must be over engineered, they didn’t even bother soldering all the components in, and some of the ones they did solder in are coldwonder how much one could save if they offered a “I know how to solder” version",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162249",
"author": "Flavien",
"timestamp": "2010-07-26T16:50:28",
"content": "The norm allow between 1k and 4.7kUsing lower value resistors allow faster speed on the bus (particularly when it has a strong capacitance)However using 1k resistors makes problem when you mess and put 2 series in parallelI personally always put 2.2k resistors…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162253",
"author": "strider_mt2k",
"timestamp": "2010-07-26T16:57:31",
"content": "Ground pin left unsoldered on that IC?-and this is the NICE one they wanted to take pictures of? hmmm…“I know how to solder version.” FOR THE WIN!Well observed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162257",
"author": "David T",
"timestamp": "2010-07-26T17:06:53",
"content": "You are looking at the solder leakage through to the top surface. The pins will, I’m sure, be soldered just fine on the underside. Surely you guys have seen double sided PCB before!There is no standard for the I2C pull-up value. 2k2 will provide a quicker rise-time – this may be important if you are planning on running the bus at 400kHz.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162260",
"author": "Brennan",
"timestamp": "2010-07-26T17:13:48",
"content": "You guys are idiots. There are so many things wrong with your comments I don’t know where to start.The “ground wire” (I assume you mean the ground connection of the clock chip) is soldered just fine in that picture, they just used a bit too much solder on the other pins so you can see it from the top side of the board on those pins. You don’t solder an IC from the top of the board! And Osgeld, where are these mystery components that they didn’t solder in? Nope, they’re all there. It doesn’t matter if the battery connections on the side are soldered in anyway, that is just for stability.And, if you actually clicked the link you would know the pictures they used in their tutorial are different and don’t even have these non-issues you are referring to.AND, you can’t say that this was “over-engineered.” It is what it is, a simple breakout board with the necessary components needed to run the RTC chip. If you want anything less than that it won’t work correctly, and if you want anything more you might as well build it yourself.4.7k is a standard value for I2C. Lower values will raise the current consumption of the module by a little bit, but the trade off is higher I2C speeds or better stability at the same speed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162263",
"author": "Osgeld",
"timestamp": "2010-07-26T17:19:19",
"content": "look at the underside of the board, I can count 3 cold solder joints and 2 pins not soldered at allso since these parts dont need to be connected as demonstrated then why have them, they must be redundant RIGHT?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162265",
"author": "Jesse",
"timestamp": "2010-07-26T17:22:11",
"content": "This looks like a cool little product. Regarding the solder quality, this board looks fine. I have bought several products from Adafruit in the past and have never received anything but high quality products. I’m sure this board will be the same.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162266",
"author": "andres",
"timestamp": "2010-07-26T17:22:51",
"content": "wow. im by no means the best at soldering but yeah, the bottom of the board has some pretty bad/messy soldering.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162270",
"author": "Brennan",
"timestamp": "2010-07-26T17:33:19",
"content": "What pictures are you even looking at? The only pictures I can find of the bottom of the board are on the soldering instructions page. There is only one picture (from the top) on the adafruit store page unless I am missing something here. Get off your high horses, the soldering is fine. The soldering job isn’t professional, sure, but the circuit would work fine as-is. There are no cold solder joints in the pictures I have seen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162271",
"author": "David S",
"timestamp": "2010-07-26T17:35:30",
"content": "The soldering job is fine. Many of you are ridiculous.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162272",
"author": "Osgeld",
"timestamp": "2010-07-26T17:37:35",
"content": "on the linked page, and yea zoom into them, you can see friggin gap tween the pin and the solder blob on one of the battery connections, and the IC, one pin of the IC isnt even soldered, another pin is barley soldered to the pad, and looks cold at the base, and one pin of the crystal is questionable, it almost looks soldered but you can see the pad under it screaming cold jointit may be fine if its going to never experiance shock, but I would take the extra second (especially if I was using it for promotional matertials) to make sure my board doesnt fall apart if I dropped it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162273",
"author": "Dosbomber",
"timestamp": "2010-07-26T17:38:45",
"content": "What impresses me most about Adafruit projects is the clarity and follow-up information during the step-by-step construction instructions. Very precise photos of the construction in progress, plus explicit details of WHY they’re putting that component in there.Buy a kit from Cheney, Rainbow, Velkman, or any of the others, and show me where they tell you that cap Cx is inserted here to filter the voltage blah blah blah. Or that resistors Rx and Ry form a voltage divider for blah blah blah. They have nothing more than a basic insert-this-here and solder it, then insert-that-there and solder it assembly instructions. Sometimes not even that much. No learning, just assembly. Adafruit’s instructions involve actual learning of how the circuit works while you’re actually building it. You can actually learn about electronics while building an Adafruit project.I wish these were around when I was first learning electronics.. would have saved me from a lot of misinformation and aggravation.Dosbomber",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162278",
"author": "dext0rb",
"timestamp": "2010-07-26T18:14:00",
"content": "i suggest all interested parties of this kit submit them to Osgeld for soldering/quality control.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162280",
"author": "osgeld",
"timestamp": "2010-07-26T18:18:42",
"content": "least I wouldnt half ass it then take pictures of it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162282",
"author": "Brennan",
"timestamp": "2010-07-26T18:20:10",
"content": "Osgeld, have you ever soldered before, or have you just read about it? Sparkfun has some decent tutorials for beginning soldering.“you can see friggin gap tween the pin and the solder blob on one of the battery connections”If you have ever soldered a large hole like a battery connector or a barrel jack you would know the hole doesn’t have to be completely plugged with solder in order for there to be a good connection. It doesn’t matter if you can see a gap, it is still soldered.“one pin of the IC isnt even soldered”Wrong, all of the IC pins are soldered. You are just looking at a shot from the top of the board where the angle is misleading. You can’t tell if a pin has been soldered unless you see it from the top and bottom at multiple angles.“another pin is barley soldered to the pad, and looks cold at the base”How do you barley solder? Infuse wheat grain with the rosin or what? Anyway, you don’t need the entire pad covered in solder, but I agree they could have used a little more here.“and one pin of the crystal is questionable”Not at all, you are again looking at the solder that was pulled through the hole, not at the pad where the connection is made.“but you can see the pad under it screaming cold joint”You can’t say if something is a cold joint or not without testing the pin/pad/wire for continuity. To say that something is a cold joint just because it doesn’t look quite right is inacurate.it may be fine if its going to never experiance shock, but I would take the extra second (especially if I was using it for promotional matertials) to make sure my board doesnt fall apart if I dropped it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162293",
"author": "Alton",
"timestamp": "2010-07-26T18:42:23",
"content": "Who cares? I mean REALLY, what does it matter what the pictures of the solder job THEY did look like? It comes as a kit, so you can do as good or as bad a job of soldering as you feel like doing. I personally take the extra time to make sure all my connections are pretty damn good, and clean my boards afterwards, but I’m also a little OCD about my projects. I bet the one in the assembly instruction would work JUST as good as one that someone took a lot more time and patience with. As far as assembly instructions go, they’re pretty good. Like people have said, a lot of other kits you wouldn’t get this kind of detail out of. I bought the USBTinyISP from Adafruit before (as a kit), and 3 years later it’s still going strong quite happily. I found the DIRECTIONS to be quite awesome, so quit ‘yer bitchin’ (on both sides of the coin). Just my two cents worth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162312",
"author": "Raging Computer",
"timestamp": "2010-07-26T19:53:47",
"content": "I know haters gonna hate, but this is ridiculous.http://www.penny-arcade.com/comic/2004/3/19/proof is in the comments here",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162360",
"author": "mungewell",
"timestamp": "2010-07-26T22:08:54",
"content": "If he wanted to be ‘elite’ he should have used a DS1337 ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162390",
"author": "NatureTM",
"timestamp": "2010-07-27T00:22:44",
"content": "If Osgeld saw how I solder, he would probably have a stroke.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162407",
"author": "MrSarcasticSolderer",
"timestamp": "2010-07-27T01:09:44",
"content": "Ummm, isn’t the unit sold at adafruit a kit…meaning you have to solder it yourself anyway?http://www.adafruit.com/index.php?main_page=product_info&cPath=42&products_id=264Osgeld u r teh orsum :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162451",
"author": "Spork",
"timestamp": "2010-07-27T04:24:03",
"content": "Isn’t 1k8 ‘The best’ for I2C? That was my impression.Anyhow, I usually use 1k8 or 1k.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162482",
"author": "Zombie Jesus",
"timestamp": "2010-07-27T08:21:02",
"content": "Obviously they just chose 2.2k for aesthetics… how else are you going to get 3 colors in a row in I2C range?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162484",
"author": "wismann",
"timestamp": "2010-07-27T09:06:00",
"content": "Most I2C devices have a current sinking capability of 3mA, some 6mA. This limits your pull-up resistors on the lower end. On the higher end the time constant of your circuit (mainly pull up and bus capacitance) limits pu resistance. The exact value depends on the speed class you are using. You could take series resistance, wire resistance and driver resistance into account, but those are usually not relevant.Anyhow, are there none on the Arduino board? This way every device adds it’s own pull ups.Do the math, some circuits with short path and only few devices still do with 10k at 3.3V",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162496",
"author": "strider_mt2k",
"timestamp": "2010-07-27T10:06:11",
"content": "Excellent points.I found this:http://www.ehow.com/facts_5883429_seven-sins-soldering_.htmlPretty good reading, and it pointed out some stuff I was doing wrong too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162526",
"author": "Stu",
"timestamp": "2010-07-27T11:58:52",
"content": "How odd! I’m using that same chip on a project I’m working on right now! I suppose its a pretty common hobbyist chip.I’ve become quite familiar with wiring this chip up over the last few weeks, I’m just wondering what that sole capacitor is there for? I’m presuming its a +5v bypass capacitor, but I never bothered with one on my schematics – works just fine.I couldn’t find an eagle part anywhere until I passed by AdaFruits Eagle library, which has it, thanks AdaFruit!I wonder why this board doesn’t just have the SMD version of the chip (which IS in the default Eagle libraries).I love Maxim ICs, I once bought a philips RTC chip, and that involved finding the right capacitors to improve the timing! I ended up having to put variable capacitors in place for fine control. Furthermore Maxim include a cool backup battery feature, along with spare RAM in the chip and a far more condensed and easy to work with BCD time registers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162529",
"author": "Stu",
"timestamp": "2010-07-27T12:01:03",
"content": "…btw thanks to those for the tips above when choosing the right I2C resistors, I thought 4.7k was the norm, and didn’t realise you can reduce it to improve high speed 400khz I2C mode.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "187388",
"author": "willy",
"timestamp": "2010-09-28T19:54:54",
"content": "the “checkout the files from their git repository” doesn’t work, just links to “http:///”",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.318807
|
||
https://hackaday.com/2010/07/28/wifi-on-a-sprint-pixi/
|
WiFi On A Sprint Pixi
|
Mike Szczys
|
[
"Cellphone Hacks",
"Palm Pre Hacks"
] |
[
"palm",
"pre",
"sprint",
"verizon",
"wifi"
] |
[youtube=http://www.youtube.com/watch?v=kpFYoT2lYU0]
The Sprint version of the Palm Pixi doesn’t have a WiFi option but the Verizon version (called the Palm Pixi Plus) does. The hardware is almost the same and [Gitit20] figured out
how to do some hardware swapping to add WiFi
. The radio board inside the phone is fairly easy to remove. Close inspection of the Sprint radio board shows some solder pads where a WiFi chip would go. The Verizon version has this chip, and moving that radio board into the Sprint phone will enable WiFi. This is strictly a hardware hack as the device identification (IMEA) is paired with the motherboard and not the radio board.
Now we want to see someone source that WiFi chip, solder onto the board, and enable it within the OS so that we don’t need a donor phone to make this work.
[Thanks Juan]
| 21
| 21
|
[
{
"comment_id": "163077",
"author": "mike",
"timestamp": "2010-07-28T17:24:20",
"content": "lol version does suck enough to go through all that trouble to get wifi on the sprint version",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163081",
"author": "Vonskippy",
"timestamp": "2010-07-28T17:32:09",
"content": "Nice work – I’m sure that Sprint’s 143 customers will be leaping in joy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163084",
"author": "Josh",
"timestamp": "2010-07-28T17:35:58",
"content": "Good lord! Would it kill people to use some punctuation when writing in on-line forums? I fear for a human society that seems to be losing it language ability. Wasn’t that a critical step in the formation of human culture?*sigh*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163086",
"author": "xeracy",
"timestamp": "2010-07-28T17:44:20",
"content": "If i buy a car, I can get it with as many features as i am willing to pay for.If i buy a cellphone, it is guaranteed to suck, not support half the features i want, and half the ones it does include will suck.A mfg makes a good phone and the carriers decide they dont want their customers to know that quality phones exist, so they gimp the shit out of them.WTF STOP IT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163097",
"author": "Per Jensen",
"timestamp": "2010-07-28T18:10:56",
"content": "IMEA ? It’s called IMEI !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163118",
"author": "tomas316",
"timestamp": "2010-07-28T18:47:03",
"content": "I took apart some of the older palm treo phones and they seemed to be similar inside. The radio was off the main motherboard so that the radio module could be switched between cdma/gsm. The software obviously didnt like the new board, but it was a good flexible design.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163122",
"author": "bountytobefree",
"timestamp": "2010-07-28T18:52:21",
"content": "xeracy, the reason for that is the cell carriers own the roads. If GM, Ford, et al owned the roads too cars would suck as much as cellphones do. The hoods would be welded shut with half the plug wires pulled off. Stupid Americans need to pull their heads out of their asses and stop believing “Ooh, only $200 for this shiny phone!*”* With 2 year, $2500 minimum contract…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163123",
"author": "blue carbuncle",
"timestamp": "2010-07-28T18:58:10",
"content": "SDIO Wifi my man. Don’t even have to crack the thing open.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163143",
"author": "xeracy",
"timestamp": "2010-07-28T20:13:20",
"content": "@bountytobefree – you are absolutely correct. that should give us some insight to how we might want to re-organize the chunks of bandwidth that assigned to wireless phone/data providers. I would love it if wired ISPs used municipal fiber/etc, so i wouldnt be stuck with only one internet provider that provides access to my house, while my neighbor across the street has a different provider, and we have no choice in the matter. Perhaps wireless spectrum should be similar…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163178",
"author": "Wiregeek",
"timestamp": "2010-07-28T22:09:36",
"content": "@JoshThank you for making your complaint regarding the grammar and punctuation in the linked post compliant with the Internet Rules.Specifically, the subsection stating that “All spelling and grammar complaints must contain spelling and grammar errors”Now, on-topic, I’d love SDIO, but you’ll pry my 16gb sd card out of my cold dead PDA, so.. now what?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163194",
"author": "FaultyWarrior",
"timestamp": "2010-07-28T23:09:59",
"content": "@Per Jensen – I was hoping someone caught this. IMEA doesn’t exist. IMEI does. But the entire statment is wrong, since CDMA doesn’t use IMEI, ICCID, nor IMSI. GSM/UMTS does. CDMA use ESN/MIN pairing.Good hack though. I wish someone would do this for the older Verizon BlackBerry’s that were crippled with no Wi-Fi.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163213",
"author": "Dakota",
"timestamp": "2010-07-29T01:28:25",
"content": "@FaultyWarrior / @Per JensenNope. It’s a Pixi – an MEID/MIN-based device. Methinks it might also be using A-key, so in that case it’s authenticating via CAVE.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163316",
"author": "Sassan",
"timestamp": "2010-07-29T10:35:14",
"content": "Wow, this hack is almost as good as the time I hacked my car to enable leather seats by taking them from another identical car that had leather seats!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163371",
"author": "blue carbuncle",
"timestamp": "2010-07-29T14:12:56",
"content": "@wiregeek, then you are a frakking retard. Store it all on google or a home VPN. My wife’s Moto RAZR has a great time and is 6 years old. If you want Wifi, this would be the other half of the solution. Anything else and you’ll have to pay me… ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163375",
"author": "blue carbuncle",
"timestamp": "2010-07-29T14:26:06",
"content": "Sorry at above. I wish I could dictate tone. “Frakkin retard” was meant in a joking, arm punching manner. I realized that you don’t know me and it was a little vociferous so I’ll go and repost what I wanted to say in a nicer manner.We enjoy the use of our VPN and it’s 2TB of music, videos, and pr0n. Most phones can do this with MSN messenger, if you can’t do a VPN. Little less secure, but works well. Sorry for the tone wiregeek. Keep on truckin’ :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163793",
"author": "strider_mt2k",
"timestamp": "2010-07-30T13:25:20",
"content": "From what I’ve read, there should be a ton of defectives laying around somewhere for someone to cannibalize…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168337",
"author": "Tyler",
"timestamp": "2010-08-13T22:10:58",
"content": "when you do this do you still have to pay for the WIFI on the phone or do you get it for free.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168543",
"author": "sassan",
"timestamp": "2010-08-14T14:20:27",
"content": "Tyler: you’ll still have to pay your subscription to the wifi service, presumably ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "215099",
"author": "Ami",
"timestamp": "2010-11-19T21:06:30",
"content": "YOU MIGHT AS WELL BY A VERIZON PALM PIXI! xD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "342706",
"author": "Richie Rich",
"timestamp": "2011-02-26T15:04:48",
"content": "i have a palm pre from sprint(current) and a palm pre plus from verizon(old(taken apart)). can i upgrade my pre to pre plus? and how?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "342742",
"author": "Richie Rich",
"timestamp": "2011-02-26T16:13:56",
"content": "nvm, job complete. wish i recorded it. palm pre came be up graded to palm pre plus. sweet!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.523037
|
||
https://hackaday.com/2010/07/28/emulating-an-amiga-floppy-drive/
|
Emulating An Amiga Floppy Drive
|
Mike Szczys
|
[
"computer hacks"
] |
[
"amiga",
"drive",
"emulator",
"floppy",
"sd",
"ufe"
] |
[Retromaster’s]
Ultimate Floppy Emulator
is a wicked display of hardware mastery. It is the culmination of several design stages aimed at replacing an Amiga floppy drive with a modern storage solution. You may be thinking that using an SD card in place of a floppy isn’t all that interesting but this hack does much more. The board, controlled by a PIC32, patches into the Amiga keyboard and monitor. This allows you to bring up an overlay menu for controlling the emulator in order to configure which virtual floppy disk is currently ‘in the drive’. He’s even gone so far as to add a piezo speaker to mimic the sounds the original drive head would make while reading a disk.
[Thanks Gokhan]
| 32
| 32
|
[
{
"comment_id": "163033",
"author": "wawa",
"timestamp": "2010-07-28T15:56:30",
"content": "OMG i so want this right now, he says hes not got plans to release the source code and pcb layouts yet though :( And he hasnt sorted out someone to make them to sell them, but i soo badly want one to play with :(Amazing project, i approve.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163036",
"author": "biozz",
"timestamp": "2010-07-28T15:57:51",
"content": "very elaborate very smart but that peso would get real annoying real fast XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163038",
"author": "liam",
"timestamp": "2010-07-28T15:58:49",
"content": "Only an Amiga owner would understand how important that piezeo would be!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163040",
"author": "Richard",
"timestamp": "2010-07-28T16:00:56",
"content": "That’s brilliant.Simply brilliant.Retromaster, I tip my hat to you for an ingenious piece of electrickery.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163050",
"author": "nes",
"timestamp": "2010-07-28T16:26:17",
"content": "Great to see another PIC32 project posted. I believe hardware wise they have the edge over many of the ARM Cortex M3 options. If only they were more widely supported.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163060",
"author": "Mike",
"timestamp": "2010-07-28T16:44:19",
"content": "biozz: You must not have owned an Amiga.Current multicore systems can’t approach the level of awesome that a single-core Amiga with 4 MB of RAM and multiple floppy drives possesses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163063",
"author": "Devlin",
"timestamp": "2010-07-28T16:48:34",
"content": "@biozz, the floppy drive sound is part of the Amiga experience. There is nothing quite like the drive roaring before a new level or cutscene in a game, especially a game like Awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163066",
"author": "biozz",
"timestamp": "2010-07-28T16:58:55",
"content": "@Mike i own 2 (only $75 a peace on ebay) and the floppy drive is not THAT loud and that sharp",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163071",
"author": "kd5uzz",
"timestamp": "2010-07-28T17:16:21",
"content": "THIS IS NOT A HACK!This is an EPIC display of incredible skill and thoughtfulness.I am very impressed!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163073",
"author": "fartface",
"timestamp": "2010-07-28T17:20:33",
"content": "REal hack! KUDOS!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163075",
"author": "Brennan",
"timestamp": "2010-07-28T17:23:40",
"content": "@kd5uzzAt first I was like ಠ_ಠand then I was like :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163082",
"author": "Paul",
"timestamp": "2010-07-28T17:34:26",
"content": "It’s the peizo speaker that makes it awesome :DIf i bought an Amiga nowadays, it would be for the nostalgia of playing games in the pastGods, Zany Golf, Wings, Pinball Dreams anybody?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163091",
"author": "zerth",
"timestamp": "2010-07-28T17:56:35",
"content": "I have the sudden urge to find an audio sample of a 1000 booting and make it my ringtone.And play Firepower.http://hol.abime.net/558",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163125",
"author": "ChEd",
"timestamp": "2010-07-28T19:05:18",
"content": "That’s EPIC!I want one! I still have my A600 and that’d make it even more awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163130",
"author": "biozz",
"timestamp": "2010-07-28T19:21:39",
"content": "@kd5uzzyour making something work in a way it was not intended tohow is that not a hack?im quite sure that is the definition of hardware hacking",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163148",
"author": "xyxy1024",
"timestamp": "2010-07-28T20:40:09",
"content": "It’s sort of overkill to me. I believe it should instead natively boot a menu to let the user choose the image. PIC32 is WAY faster than the Amiga, the hack could at least try to use as much early-90s technology as possible. An 8051 maybe?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163150",
"author": "space",
"timestamp": "2010-07-28T20:42:07",
"content": "bravo. someone finally made proper replacement for standard industrial floppy drive. this hack is more than AMIGA / Atari ST / Amstrad CPC floppy replacement. i bet ti could be modified to work in midi boxes, keyboards, cnc machines, etc.thank you Retromaster!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163187",
"author": "vonskippy",
"timestamp": "2010-07-28T22:43:32",
"content": "Maybe for his next trick he could make self-adjusting rabbit ears for his 12″ Black & White TV.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163217",
"author": "Squirrel",
"timestamp": "2010-07-29T01:57:21",
"content": "@biozzyou obviously fail at catching a joke :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163236",
"author": "neimad",
"timestamp": "2010-07-29T04:01:41",
"content": "AWESOME hack. Great job.I used to love hardware hacking the amiga way back when. This brings back fond memories.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163277",
"author": "Kyle",
"timestamp": "2010-07-29T07:04:20",
"content": "has anyone made a fake floppy drive for x86? I really really hate floppys but I like old computers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163284",
"author": "jef",
"timestamp": "2010-07-29T07:38:43",
"content": "Another universal solution (for Atari, Amiga, Amstrad CPC, keyboards, samplers, cnc machines, PC,…):http://hxc2001.free.fr/floppy_drive_emulator/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163325",
"author": "Frank",
"timestamp": "2010-07-29T11:24:05",
"content": "Fantastic – I love my old Amiga – i’ve still got my old A500 from when i was a youngster.The floppy noise feature just tops it off for sure – it was pretty impressive to hear it on the uae emulator.Would be cool to copy floppies straight onto SD cards though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163330",
"author": "Frank",
"timestamp": "2010-07-29T11:28:49",
"content": "Maybe i should’ve watched the video – xcopy DF1: to DF0:! FTW!I gotta get me one of these!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163342",
"author": "Jay Vaughan",
"timestamp": "2010-07-29T12:18:33",
"content": "I wonder if its possible to adapt this to use it with the Oric Atmos machines? Its getting close to impossible to find drives for these old 8bit treasures, so I’ve considered using an ATMEGA to do a floppy emulator too .. but if this thing can be easily adapted, maybe that’d be a better option.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163354",
"author": "Mike",
"timestamp": "2010-07-29T13:02:09",
"content": "EPIC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163401",
"author": "walt",
"timestamp": "2010-07-29T15:33:41",
"content": "SOLD! Where do I get one?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163432",
"author": "SelfSilent",
"timestamp": "2010-07-29T18:08:27",
"content": "Uber epic hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163496",
"author": "lobatt",
"timestamp": "2010-07-29T21:46:09",
"content": "I want one for my c64!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163511",
"author": "Che",
"timestamp": "2010-07-29T22:04:25",
"content": "@Jeff Nice advertisement for your site :)But your emulator is far to slow for Retromaster’s emulator.@ Retromaster Great Job! Well done!Find someone to sell this… I am buying one-two pieces for sure",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163755",
"author": "Jef",
"timestamp": "2010-07-30T07:20:44",
"content": "@Che : Far too slow ?!?! What this means exactly ?Like all floppy emulators the speed is limited by the floppy interface : 250Kbits/s in DD mode or 500kbits/s in HD.So the loading time is the same for all floppy emulators !!!May i add another advertissement ;-) :(On screen display software already available for Atari ST and CPC users :)http://www.youtube.com/watch?v=bnyC5te6Mn0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163766",
"author": "Jef",
"timestamp": "2010-07-30T08:18:52",
"content": "Another word:Anyway retromaster’s floppy emulator is good no doubt about this.My first comment was just for the person looking for an universal floppy emulator( for cnc machines, keyboards,…)As said on his website retromaster don’t want for the moment support <> computers, but only a few one.The HxC Floppy Emulator intend to be able to replace most Floppy disk drive in any situation (with screen or without screen…), in the most possible standard way.As far i can said the 2 projects doesn’t have the same aim, this was only a small link for people looking for a more standard floppy emulator (i must admit that hackaday is the wrong place for this ;-) ).",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.849431
|
||
https://hackaday.com/2010/07/28/inductive-cellphone-charging-without-voiding-warranty/
|
Inductive Cellphone Charging Without Voiding Warranty
|
Mike Szczys
|
[
"Cellphone Hacks"
] |
[
"charging",
"hd2",
"htc",
"inductance",
"inductive",
"palm",
"touchstone"
] |
[Derek Hughes] wanted to use
inductive charging on his cellphone
without voiding the warranty. He picked up a Pixi charging backplate meant for a Palm Pre and scavenged the coil and regulator circuitry from it. To make the electrical connection with his HTC HD2 he removed the mini-USB plug from a charging cable and connected it with 30 gauge wire. The whole package will fit beneath the back plate for use with a Touchstone charger (
as we’ve seen with the HTC Evo
) but there was one problem. The metal backplate from the HD2 interferes with the inductive charging. For now he’s using tape to hold everything together while searching for a plastic case replacement.
He walks you through the hack in the video after the break. We’re usually not worried about voiding warranties, but a phone like this takes a lot of abuse and having warranty protection or even a service agreement isn’t a bad idea.
| 26
| 25
|
[
{
"comment_id": "163004",
"author": "andrew",
"timestamp": "2010-07-28T14:29:37",
"content": "Why would a phone like that take a lot of abuse?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163009",
"author": "Travis Deyle",
"timestamp": "2010-07-28T14:44:31",
"content": "Been there, done that. A while back we built a wireless charging system that just provided USB power to _any_ device:http://portal.acm.org/citation.cfm?id=1586646.1588250",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163010",
"author": "MS3FGX",
"timestamp": "2010-07-28T14:44:43",
"content": "Yeah, I don’t understand that logic either. What makes this phone more likely to be abused than any other?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163011",
"author": "liam",
"timestamp": "2010-07-28T14:47:31",
"content": "Is the backplate ferrous metal then? Aluminium might be a suitable substitute. Easy enough experiment to do, just cut up a coke can.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163022",
"author": "Mike Szczys",
"timestamp": "2010-07-28T15:12:16",
"content": "Perhaps a poor choice of wording. I meant cell phones in general, versus other electronics like a laptop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163025",
"author": "toaste",
"timestamp": "2010-07-28T15:21:58",
"content": "Even non-ferrous metals could be an issue: the alternating magnetic field from the charger’s coil would induce eddy currents in any conductor which in turn produce magnetic fields opposing the source. If you doubt it, drop a magnet down a copper pipe and observe how slowly it falls despite copper being non-ferromagnetic.http://regentsprep.org/Regents/physics/phys08/clenslaw/default.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163030",
"author": "alfcoder",
"timestamp": "2010-07-28T15:46:38",
"content": "@Travis Deyle: me too :)http://www.youtube.com/watch?v=TIhPayFBE9c",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163034",
"author": "fartface",
"timestamp": "2010-07-28T15:56:55",
"content": "Bah, why cant phone makes pull their heads out of their butts and put this in the phones?We should have had this cince 1985.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163048",
"author": "Regulus",
"timestamp": "2010-07-28T16:18:20",
"content": "Awesome!This is a hack I can stand behind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163053",
"author": "Whatnot",
"timestamp": "2010-07-28T16:38:34",
"content": "Lol at the tape, it’s so white and tawdry, such an ad hoc fix.Quite amazing too that he has clue what he’s doing it seems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163054",
"author": "Whatnot",
"timestamp": "2010-07-28T16:40:45",
"content": "What I don’t get is why they don’t use the same system on cellphones that they use on classical wireless phones in the home, 2 large metal contacts on the bottom and you put it in the stand and it recharges without fiddling with plugs or slotting it into a small connector.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163057",
"author": "nighthawk",
"timestamp": "2010-07-28T16:42:45",
"content": "the little microusb board sticking out is… kinda impractical, isnt it? you cant really put that into your pocket or anything…and @alfcoderwhere can I get the schematic or guide to make that, thats pretty sick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163072",
"author": "bob",
"timestamp": "2010-07-28T17:19:57",
"content": "I wish I could find some info on that wireless charger. How is a DC current generated? Is there a transformer on the board connected to the induced coil? I’m assuming that an AC current is being induced in the coil, which wouldn’t be able to charge the battery.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "551228",
"author": "Rick Astley",
"timestamp": "2012-01-05T04:05:34",
"content": "DC Power Supplies use step down transformers, rectifiers, filters, regulators.To charge a battery you just need a step down transformer and a full wave rectifier. A filter would be nice.",
"parent_id": "163072",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "163079",
"author": "roswellaliens",
"timestamp": "2010-07-28T17:28:20",
"content": "lol.. i had this idea a few weeks back because my nokia el cheapo phone had a flaky unreliable charging connector.one thing that might work is some shapelock carefully formed into a copy of the unusable backplate, then if you want mix in some of that “Heat-it-Up” black pigment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163105",
"author": "D_",
"timestamp": "2010-07-28T18:24:13",
"content": "Rough finish, but a good proof the hack is functional. Personally I’d like to see drop in charging bases be made available. Inductive charging is far out, but I wouldn’t want my wallet with numerous magentic strips near them, and I like to keep my wallet where my check book, phone,keys HT, and pocket knife are kept by the door.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163126",
"author": "stacyD",
"timestamp": "2010-07-28T19:09:41",
"content": "Hello there bob,Actually there is a small circuit attached to the coil via an f-pcb. It is a relatively straight forward chip-based, surface mount circuit that they conveniently covered in black epoxy.I did the same thing to my EVO, although I did mine internally and with a PIXI backcover….guys you can pick up the PIXI back covered at many radioshacks right now for $6 with tax. I really should have bought more of them so that everything could be made inductive!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163151",
"author": "Travis Deyle",
"timestamp": "2010-07-28T20:50:26",
"content": "For people looking to understand the circuit, here’s a fair overview:http://www.hizook.com/blog/2008/10/07/wirelessly-powering-swarm-robots",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163165",
"author": "Curt",
"timestamp": "2010-07-28T21:28:14",
"content": "Order a double capacity battery off of Ebay.. It comes with a plastic back that is a little deeper. Shouls accomodate the whole setup :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163259",
"author": "Simon Chester",
"timestamp": "2010-07-29T05:37:52",
"content": "“He picked up a Pixi charging backplate meant for a Palm Pre”Shouldn’t that be:“He picked up an inductive charging backplate meant for a Palm Pre”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163292",
"author": "ansil",
"timestamp": "2010-07-29T08:12:28",
"content": "you know i see this and i was wondering is the battery in this phone internal and not removable. cause otherwise why not buy another battery and just add this to the battery itself. i have about 50 different battery packs that all charge in different ways and built a diy charger for them very crudely. however when i saw afroman’s inductive article i was playing with my Lg Chocolate and did it to a separate battery.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163343",
"author": "gripen40k",
"timestamp": "2010-07-29T12:20:22",
"content": "@bobI built a super cheap wireless charger from pretty much scrap parts I had laying around. All it requires really is an oscillator and some caps.Check it out (sorry about the ible, need to move to a new site)http://www.instructables.com/id/Low-Power-Wireless-Charging/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163352",
"author": "Mike",
"timestamp": "2010-07-29T12:58:18",
"content": "“a Pixi charging backplate meant for a Palm Pre”No, it’s a Pixi charging backplate meant for a Palm Pixi. No Pre parts.Good work for adding inductive charging, but I would worry about that snagging that little dongle sticking out of the bottom. Even when you get a good plastic back, the cable part sticking out from the bottom will be your weakest link.@fartface: Palm did!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163455",
"author": "djrussell",
"timestamp": "2010-07-29T20:17:23",
"content": "@whatnot: my blackberry 8320 has that. the base is extra though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "288125",
"author": "Jeff",
"timestamp": "2010-12-22T10:59:10",
"content": "Can anyone help me out with figuring out what circuit is required to wire this directly to the battery so the plug does not have to stick out? I am attempting this on my Dell Streak.I know the phone wont recognize the charger by going this way, but I would expect I would need some form of power management so as not to overcharge the battery. Or is this already built into the Pre’s induction piggy-back circuitry with the coil?I would love to be able to internalize this in a simple way where I wouldn’t have to solder to the PDMI connector on the mainboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "322111",
"author": "FoxxCommand",
"timestamp": "2011-02-03T12:22:30",
"content": "What would happen if he hooked up the + and – cords to the + and – terminals on the battery? could he use it like that",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.583167
|
||
https://hackaday.com/2010/07/28/extra-extra-now-legal-to-jailbreak-iphone/
|
Extra Extra: Now Legal To Jailbreak IPhone
|
Jakob Griffith
|
[
"News"
] |
[
"cellphone",
"circumvention",
"company",
"copyright",
"dvd",
"exemptions",
"fine",
"illegal",
"iphone",
"jailbreak",
"legal",
"news",
"program",
"software",
"video",
"warranty"
] |
For those living under a rock, the latest ‘greatest’ news to hit hacking front page is the the Copyright Office granting
Six Exemptions Regarding the Circumvention of Access-Control Technologies
. Of the six the one of the two regarding iPhones is as follows,
“(2) Computer programs that enable wireless telephone handsets to execute software applications, where circumvention is accomplished for the sole purpose of enabling interoperability of such applications, when they have been lawfully obtained, with computer programs on the telephone handset.”
Which (along with section 3) really just means that you can unlock and crack cellphones and companies can no longer fine you $2,500. Not that many ever
have
but the threat was there. Apple however, can and still will void your warranty if you jailbreak.
The 4 other areas not involving phones are the ability to circumvent DVDs for portions of video, video games in order to better the security of said game, computer programs that require dongles but dongles are no longer available, and literary works that prevent read-aloud or rendering to a specialized format.
One tidbit I keep hearing about in these exemptions is the ability to now break DRM on
music
, as much as I wish this were true, I can’t seem to find any sources on it, sorry pirates.
Regardless, now that the world is one step closer to an open framework, whats changed? For me, I’ve been jailbroken for years so sadly nothing. If you agree with the ruling, disagree, or just want to tell about your now legal jailbreaking joys, please leave a comment.
Additional Sources:
FOXNews
and
CNNMoney
thanks to [Voyagerfan99], [Ryan Knight], and [Steve S.] respectively.
[Image credit:
Fr3d.org
]
| 33
| 33
|
[
{
"comment_id": "162990",
"author": "Laminar",
"timestamp": "2010-07-28T13:33:51",
"content": "In b4 iPhone sucks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162999",
"author": "vash sin",
"timestamp": "2010-07-28T14:18:45",
"content": "certain devices such as the palm pre and the palm pixy, come ready for your hackary straight out of the box.. Hell they come witth an opensorce pdf! No jailbraking requaired :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163001",
"author": "Christopher",
"timestamp": "2010-07-28T14:21:47",
"content": "If these exemptions apply to the DMCA’s anti-circumvention provisions, why has the media been playing up the effect on iPhone? They aren’t the only handsets that can be modified and the Library of Congress article mentions neither Apple nor iPhone. I understand Apple was involved in the lawsuit, but the coverage surrounding iPhone seems like little more than undue free advertisement.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163006",
"author": "kirov",
"timestamp": "2010-07-28T14:38:11",
"content": "this isn’t a news site; even if it was you’re 2 days late and we’ve all already seen this story.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163008",
"author": "Nick",
"timestamp": "2010-07-28T14:44:01",
"content": "^– l33t h@x0rs can complain about anything..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163013",
"author": "john",
"timestamp": "2010-07-28T14:49:34",
"content": "http://www.youtube.com/watch?v=oIP1okixlfE",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163017",
"author": "Boudico",
"timestamp": "2010-07-28T14:53:47",
"content": "Apple should be happy about this. Likely, their sales will go up because those who were hesitant about buying an iPhone (for the purposes of jailbreaking/etc) have no real roadblock now. And it may inspire others who are just starting out. Granted, the voiding of warranty is still a deterrent, but when has that really ever hindered a hacker?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163019",
"author": "Make",
"timestamp": "2010-07-28T15:03:11",
"content": "The interesting thing I see on the list of exemptions is the last one: that eBook DRM can be circumvented if the DRM inhibits screen readers from converting it into a specialized format (like braille) or if the Text-to-Speech is disabled.Many kindle books have text-to-speech disabled specifically, so how long till some hacker breaks the DRM, and we all have ePub format eBooks from Kindle’s vast library of eBooks?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163023",
"author": "fartface",
"timestamp": "2010-07-28T15:13:16",
"content": "Why not just throw out the abortion that is the DMCA?Nobody likes it but idiots and greedy asshats..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163044",
"author": "BitterTait",
"timestamp": "2010-07-28T16:07:18",
"content": "@make: Kindle DRM has been broken for a while, but that’s still awesome news. Braile books have always been limited and now vision impaired people can get access to the entire amazon ebook library.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163045",
"author": "tyco",
"timestamp": "2010-07-28T16:10:24",
"content": "I apparently do live under a rock; this is the first I’ve heard about it….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163046",
"author": "Laminar",
"timestamp": "2010-07-28T16:11:19",
"content": "@ChristopherBecause news sites realized that all they have to do is mention “Apple” and they get hundreds of venomous Apple lovers/haters driving up page hits and ad revenue.It’s why CNN had 30 different iPad articles the first time it came out, and it’s why when Apple does the tiniest thing, news sites go crazy.Like the recent article on suicide rates in Foxconn factories. They make stuff for EVERYONE, but news sites know saying “Making iPhones causes suicides” will get more hits than “Suicides at an unknown manufacturer’s plant.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163052",
"author": "Unraised",
"timestamp": "2010-07-28T16:34:48",
"content": "@BitterTaitCan you point me to a good source of information on this (Kindle DRM broken)? I tried Google but all the search results were full of crappy blogs.Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163074",
"author": "pod",
"timestamp": "2010-07-28T17:20:33",
"content": "I remember reading of it here on HAD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163080",
"author": "smyroad",
"timestamp": "2010-07-28T17:30:22",
"content": "Now that it’s legal, it’s not really jail-breaking any more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163083",
"author": "rain",
"timestamp": "2010-07-28T17:34:39",
"content": "muahahahahha",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163088",
"author": "dasich",
"timestamp": "2010-07-28T17:53:09",
"content": "Since it is no longer illegal, they should not call it “Jailbreaking” anymore. They should call it “cherry-popping”. (I would say “apple-popping” but that just didn’t sound right.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163101",
"author": "Someone",
"timestamp": "2010-07-28T18:18:07",
"content": "IMHO, why should I need to jailbreak? When you buy any product that is DRM’d / jailed, you’re encouraging a company to keep doing it. If this company is popular / making loads of money, other companies will more than likely follow suit.I’ve been recommending the Palm Pre+ (for a open garden), BlackBerry (messaging) or Android (for those who want to make the phone their own due to customization potential, or if they’re conscious about privacy issues). All come with standard micro USB, can be used as a USB drive in a pinch, and most importantly, running software on it doesn’t require authorization of a central entity (without voiding your warranty).All are capable phones and mobile computing devices, equal or better than all the other competition out there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163107",
"author": "BitterTait",
"timestamp": "2010-07-28T18:30:02",
"content": "@make, I got the walkthrough from a blog post, can’t remember which one. I know that there’s two types of DRM, both of which are cracked. unswindle is the name of the application for the first version, and topaz tools is the name of the more recent one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163127",
"author": "octel",
"timestamp": "2010-07-28T19:11:51",
"content": "ew, of all the additional sources why link to fox news?it’s not news, it’s a reactionary nationalistic trash outlet; the mouthpiece of the republican party",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163137",
"author": "crait",
"timestamp": "2010-07-28T19:53:22",
"content": "It’s always been legal… AT&T just doesn’t want you to know about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163161",
"author": "lizardb0y",
"timestamp": "2010-07-28T21:24:41",
"content": "I think it’s great that consumers’ freedoms are being recognised, but I wish that consumers would send a strong message to the market that they want those freedoms, by avoiding products – such as iPhone and Android – that deliberately restrict those freedoms in the first place. We’ll never see open products of any quality if we don’t push the vendors towards it.I realise that the majority of consumers don’t understand the problem and don’t care. What amazes me is the number of technical people – hackers if you will – who still buy into the iPhone ethos, justifying it to themselves with the excuse that someone will always work out how to jailbreak new devices eventually. Won’t they? So what’s the problem?I have a simple philosophy with regard to new devices; if I have to jailbreak (or equivalent) a device to make it do what I want, I won’t buy it. So sure, my Openmoko phone is way behind the times, I can’t run the latest game titles on my GP2X and my iAudio player has seen better years, but they work for me, not against me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163164",
"author": "DarkFader",
"timestamp": "2010-07-28T21:25:52",
"content": "@smyroad: I’d still call it “Jailbreaking” for technical and clarity reasons.Now it’s legal, people don’t need to think it’s turned into a privilege. Apple might try harder to lock things down now they know it’s legal and people are going to attempt to jailbreak it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163176",
"author": "zool",
"timestamp": "2010-07-28T22:04:04",
"content": "i don’t have an iphone but i’m assuming that even if ‘jailbraking’ is now legal, you’ll still be denied repair service from apple if you jailbrake then try to get it repaired or somethingi can just see hundreds of n00bs messing up their phones then trying to get it fixed because it’s ‘legal’ now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163195",
"author": "vashsin",
"timestamp": "2010-07-28T23:14:59",
"content": "all i gotta say ishttp://www.precentral.net/mckinney-we-support-homebrew-hp-engineers-creating-webos-apps#comments",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163202",
"author": "spray190",
"timestamp": "2010-07-29T00:29:14",
"content": "@lizardb0y: Open source hardware can be a bit hit and miss though especially where functionality is concerned, that being said I own a GP2X and love it i have also recently taken delivery of a Pandora which is simply amazing, so if your after a replacement for that GP2X that has decent hardware inside get on the preorder cue for the Pandora second batch.As for phones i have a jailbroken G1 (HTC Dream) and its a great device unfortunately there are no truly open source alternatives to it for my requirements and thats why people still buy closed devices, because they do provide what they need.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163218",
"author": "james",
"timestamp": "2010-07-29T01:59:26",
"content": "i sort of wish that jailbreaking were illegal because:i think that one of the big reasons many people jailbreak their iphone to be able to install app store apps for free. that’s super shitty, as the developers for those apps are regular schmucks (and probably HAD people themselves).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163285",
"author": "Erak",
"timestamp": "2010-07-29T07:51:35",
"content": "@BoudicoDo you really think people have hesitated about it being illegal? Did anyone really think that they would get arrested if jailbreaking their phone? I think the void of warranty is the real threshold. And remember, this is just the US, not the world.@MakeWhy would it stop hackers before just because it was considered illegal in the US? Most “illegal” DRM hacks are being done anyway, you couldn’t just distribute them as freely in the US.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163313",
"author": "Xb0xGuru",
"timestamp": "2010-07-29T10:18:54",
"content": "FYI – you can’t mess up an iPhone via software-only. If you want to take a screwdriver to it, sure – it’s going to invalidate any warranty you have. Even if you manage to Jailbreak and do internal damage such as changing permissions etc or screwing up plist entries, there’s nothing that a simple Restore via iTunes won’t resolve. If you were uber-smart, you would have saved your SHSH blobs (3GS owners) and you can just re-download the same OS version and try again.For me, this is only one part of the problem. Sure, it’s legal to enable non- ‘app store’ apps onto your iPhone, but surely the icing on the cake now should be to force Apple to allow this at factory?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167487",
"author": "Christopher",
"timestamp": "2010-08-11T05:26:53",
"content": "it is about damn time that this happened, I don’t know why so many people will now all of a sudden do it. Anyway i am happy :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168121",
"author": "Thawk",
"timestamp": "2010-08-13T06:08:23",
"content": "It has always been legal for you to “jailbreak” you can buy a HP laptop and install any software you want, hardware is hardware, they can’t demand you only run their software, ie monopoly, and they are in court over that as well lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "212229",
"author": "T. Anderson",
"timestamp": "2010-11-14T08:00:54",
"content": "How is my username [voyagerfan99] credited to the article? Where did you get the information?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "212390",
"author": "Jakob Griffith",
"timestamp": "2010-11-14T18:37:30",
"content": "@T.Anderson:http://www.computerforum.com/179911-new-regulations-make-jailbreaking-legal.htmlRegards,Jakob GriffithHaD Team",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.65567
|
||
https://hackaday.com/2010/07/27/store-update-bags-pads-and-possibly-badges/
|
Store Update: Bags, Pads, And Possibly Badges.
|
Caleb Kraft
|
[
"News"
] |
[
"shirts",
"stickers",
"store"
] |
Some new products
have worked their way into our hands and are just waiting for some awesome Hack a Day logos to be put on them. We’ve added a couple bags, some huge mouse pads as well as normal ones, and we’re considering adding the
Hack A Day badge
. You’ve seen the badges before,
when we took them to CES
. [Devlin] estimates that the cost would be $25 each before shipping. We would like to get some feedback before he starts pumping these things out. How many of you want one?
| 43
| 35
|
[
{
"comment_id": "162717",
"author": "Yamell",
"timestamp": "2010-07-27T21:47:09",
"content": "I like, is a really cool design, I do want one",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162719",
"author": "echo",
"timestamp": "2010-07-27T21:49:23",
"content": "i want one of the bags looks awsome guys =]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162737",
"author": "h3po",
"timestamp": "2010-07-27T22:21:01",
"content": "Many communities offer shirts, bags and mousepads but the thing is I don’t want to buy one of these because the quality is never good enough for everyday use, especially with these bags. It would be cool though if you’d sell the vinyl cuts to put on our own bags and shirts, so the base is individual and one could use something else than standard american apparel. And this would be cheaper for you as well, not having to get a stock of the base goods.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162743",
"author": "Patrick",
"timestamp": "2010-07-27T22:42:03",
"content": "I dig the badges, I’d wear one to work, (IT geek). But see if you can get the cost per unit down, $25 for a hunk of inanimate plastic is a bit much to +rep a web log. Mehby LED light up eyes for the skull?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162744",
"author": "Patrick",
"timestamp": "2010-07-27T22:43:11",
"content": "oh and the logo on the mousepad needs to be bigger.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162746",
"author": "Osgeld",
"timestamp": "2010-07-27T22:46:31",
"content": "yes the logo could be bigger on the next run, and is that a super large mousepad, or a super small mouse? almost looks like it would fit under my model M keyboard",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162748",
"author": "zing",
"timestamp": "2010-07-27T22:53:49",
"content": "The mousepad in that picture is 17″ x 13″!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162756",
"author": "Smerky",
"timestamp": "2010-07-27T23:14:29",
"content": "What material is the big mousepad?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162784",
"author": "Caleb Kraft",
"timestamp": "2010-07-27T23:49:11",
"content": "@smerky,rubbery material with a cloth top. The first ones will be in later this week and I’ll get a better picture.They are .2 inches thick and can be rolled up or cut to specific sizes.",
"parent_id": "162756",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162757",
"author": "Drew",
"timestamp": "2010-07-27T23:18:29",
"content": "Wow- I really needed a new large commuter bag for class- that’s exactly what I wanted, in solid black, shoulder sling with flap, and with that awesome contest-winner Hackaday circuit logo.These are really nice products Caleb- I’m picking up one of those commuter bags as soon as I get my paycheck- sweet!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162780",
"author": "Che",
"timestamp": "2010-07-27T23:33:09",
"content": "Badges? We don’t need no stinkin’ badges…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162821",
"author": "cvzero",
"timestamp": "2010-07-28T01:33:20",
"content": "25.00 for a badge ?!?!?!?!? How freaking big is it ? As much as I’d love to buy a hack-a-day logo badge 25.00 is just waaay too much to spend on such a small thing. Unless you’re planning on making them in sterling silver or something. I’d buy one if the price was 15.00 or less if we’re talking about something approx. a couple inches square. Any bigger than something that would look good on a pc case or project enclosure and I wouldn’t want the gaudy thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162839",
"author": "Osgeld",
"timestamp": "2010-07-28T02:25:08",
"content": "good point! you need pc case badges",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162840",
"author": "D1g1talDragon",
"timestamp": "2010-07-28T02:27:40",
"content": "So…wait…$25 to basically carry an ad? I love you guys, and check in several times a day, but you’re all a bunch of crazies.The bag looks like a good start though. Keep trying some new stuff! If you offer something I couldn’t “hack” together at CafePress for half the price, I’d be in just to support ya. :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162976",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T11:41:04",
"content": "@D1g1talDragon,You can’t get our cut vinyl stickers or pressed vinyl bags and mousepads at cafepress. They to DTG, so you also won’t be seeing much white on black. This is good feedback on the badge, thanks!",
"parent_id": "162840",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162842",
"author": "sarsface",
"timestamp": "2010-07-28T02:31:19",
"content": "Wow, Cafepress much?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162974",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T11:38:59",
"content": "@sarsface,Absolutely nothing in our store is made at cafepress. Every item is made by one of us. I personally make the stickers and press vinyl on to shirts/bags/mousepads. Devlin makes the badges.",
"parent_id": "162842",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162852",
"author": "Rob",
"timestamp": "2010-07-28T03:14:40",
"content": "$25? Are these being individually printed with a rapid prototyping machine? Make a silicon mold and pump them out for like 50 cents! This is hack-a-day! DIY!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162973",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T11:37:56",
"content": "@Rob,yep, individually printed on Devlin’s machine.",
"parent_id": "162852",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162866",
"author": "leonardtj",
"timestamp": "2010-07-28T03:54:54",
"content": "I totally want one, I am gonna hack some red led’s in it for eyes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162867",
"author": "leonardtj",
"timestamp": "2010-07-28T03:56:18",
"content": "hey how about some vinle decals for our cars/laptops maybe a 3×3 or 4×4",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162972",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T11:36:40",
"content": "@leonardtj,Check out the sticker section of the store. They are all cut vinyl 7 year outdoor rated.",
"parent_id": "162867",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162870",
"author": "Osgeld",
"timestamp": "2010-07-28T04:05:45",
"content": "“$25? Are these being individually printed with a rapid prototyping machine?”why yes they are, cool but still good point",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162871",
"author": "Osgeld",
"timestamp": "2010-07-28T04:07:11",
"content": "http://www.instructables.com/id/Ultra-quick-resin-cast-parts/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162877",
"author": "Joshua",
"timestamp": "2010-07-28T04:18:52",
"content": "I, like everyone else, think that $25 is crazy, no matter what logo it has been shaped into. I’d go $25 with some individually-programmable tri-color LEDs, or $15 as it is now, just because I love you guys.The bag, on the other hand, is epic, and I want one. I am going to aggressively prototype on the aggressively prototype bag.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162892",
"author": "Joe Blow",
"timestamp": "2010-07-28T05:20:21",
"content": "We need a Hack a Day Coffee Mug!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162898",
"author": "das_coach",
"timestamp": "2010-07-28T05:53:47",
"content": "i do want a mousepad and a bag, but do they ship to germany, too (and how much shipping would that be)?sorry for my bad english, greetz from germany,das_coach",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162924",
"author": "Stewart",
"timestamp": "2010-07-28T07:24:11",
"content": "The mouse pad gave me an idea. What about some HaD branded anti-static mats.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162934",
"author": "Che",
"timestamp": "2010-07-28T07:59:05",
"content": "At $25 the badges should be wifi connected and change color to alert to new HaD posts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162938",
"author": "svofski",
"timestamp": "2010-07-28T08:29:46",
"content": "$25 is the sum of a minimal Shapeways order, worldwide delivery included (sans Russia of course, who is surprised). Guess that’s the source of price estimate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162940",
"author": "Lee Johnson",
"timestamp": "2010-07-28T08:34:25",
"content": "For the badges consider using a service such as emachineshop.com to do injection moulding instead of individually printing them. The tooling cost would be quite high but if you plan on making more than a few it may be worth it. They have freeware CAD software available on their site (windows only unfortunately) which estimates the cost for an item based on the material and process you specify.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162971",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T11:33:40",
"content": "@svofski and lee johnson,Devlin makes the badges himself on his makerbot. That’s what makes them so cool! Check out the links in the post for more information on that. We realize that they are fairly expensive, that’s why we are asking instead of just producing a ton.@das_coach,Yes, we ship to germany. Just order like normal.",
"parent_id": "162940",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162994",
"author": "jukus",
"timestamp": "2010-07-28T13:47:05",
"content": "+1 large Mousemat",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163014",
"author": "Bender",
"timestamp": "2010-07-28T14:51:06",
"content": "Why not just put them up on Zazzle or Cafepress? Costs nothing to have a graphic-designed item available to anybody who wishes to purchase one…Unless, of course, you’re looking at doing a superior product of some sort–in which case, Zazzle/Cafepress/etc would still give you a free and accurate gauge of demand.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "163024",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T15:19:04",
"content": "@Bender,Neither of those sites do custom cut vinyl stickers. That’s how this all started. I personally make stickers and offered to do them for Hack a Day. The shirts and other stuff are also all from my personal equipment. You’ll also note that white on black is fairly expensive in those stores (plain t-shirts being almost $20).In short: I have all the equipment at home and do custom freelance stuff. why not use it for Hackaday. I sell to anyone, ship to anywhere, and can even customize your order if you ask really nicely.",
"parent_id": "163014",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "163090",
"author": "Nick",
"timestamp": "2010-07-28T17:54:39",
"content": "I’d buy one of those badges for maybe 5…Even better, why don’t you just host some 3d printer plans for free?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "163092",
"author": "Caleb Kraft",
"timestamp": "2010-07-28T17:57:54",
"content": "@nickthere’s a tutorial on making your own in the article. In that tutorial, there are links to the files.Here it is onthingaverse. Send us a picture when you make one!Or, you can just have one made at shapeways:http://www.shapeways.com/model/80960/large_hack_a_day_badge.html",
"parent_id": "163090",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "163094",
"author": "Domonoky",
"timestamp": "2010-07-28T18:08:55",
"content": "I printed a badge myself, costs only a few cents of plastic and a bit of waiting. :-)http://picasaweb.google.de/Domonoky/Repman#5427839503496188274",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163100",
"author": "Zelka",
"timestamp": "2010-07-28T18:17:51",
"content": "I would love to have that same badge design on a keychain!Although as it stands, it is too expensive, but maybe others would like it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163111",
"author": "Coryan",
"timestamp": "2010-07-28T18:35:32",
"content": "Wow, those badges are incredible…but $25 is a bit steep!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163393",
"author": "Cicero",
"timestamp": "2010-07-29T15:22:28",
"content": "Hoodies Hoodies Hoodies!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163403",
"author": "Will",
"timestamp": "2010-07-29T15:38:57",
"content": "I would definatly buy the bag! A hoodie is another awesome Idea! Maybe a keychain Badge thats also a wi-fi finder.. Mousepad I like it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163812",
"author": "capnboost",
"timestamp": "2010-07-30T15:14:10",
"content": "I was hoping for a case badge.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.925851
|
||
https://hackaday.com/2010/07/27/200-mile-rf-transmitter-and-high-altitude-balloon/
|
200 Mile RF Transmitter (and High Altitude Balloon)
|
Jakob Griffith
|
[
"Arduino Hacks",
"Wireless Hacks"
] |
[
"74hc240",
"attiny44a",
"octal buffer",
"wireless"
] |
If there is one thing we like, it’s a fellow hacker so enthusiastic about his or her work that they write the article practically for us by including as much detail and information as possible.
In this two part hack, [Scott]
wrote in
to let us know not only about a high school built
high altitude balloon
, but also his $5 long range RF transmitter. The former is simply GPS and video data logged over the flight, but [Scott’s] specialty comes in the latter. A 74HC240 octal buffer is using to amplify the signal (Morse code) from an ATTiny44a with a 29MHz oscillator, producing a
usable signal
as far away as 200 miles.
It is low bandwidth, but if you’re looking for a simple transmitter in your project and need something with more power (and a
smaller package
), this might be the ticket.
| 48
| 44
|
[
{
"comment_id": "162700",
"author": "yeahok",
"timestamp": "2010-07-27T21:03:37",
"content": "i like the direct labeling of the leds.pretty funny.talk about a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162705",
"author": "Addictronics",
"timestamp": "2010-07-27T21:13:50",
"content": "Perfect! I am definitely going to use this in my high altitude glider. Thanks and what a great hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162714",
"author": "Scott",
"timestamp": "2010-07-27T21:41:23",
"content": "WHAT THE HECK!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162715",
"author": "Scott",
"timestamp": "2010-07-27T21:41:52",
"content": "WHAT THE HECK! Who categorized this under arduino hacks? It’s a conspiracy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162718",
"author": "bothersaidpooh",
"timestamp": "2010-07-27T21:47:19",
"content": "yeah, i ran into this hack at ‘uni, its an accepted technique to locate a suitable canned oscillator and frequency multiply or divide it to obtain the desired overtone which is then amplified,i still need to get around to building my high altitude balloon, which has among its sensors a dual geiger tube coincidence detector for sensing cosmic ray flux at altitude.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162723",
"author": "asheets",
"timestamp": "2010-07-27T21:54:44",
"content": "Too bad that under the current 10 meter band plan (1) this freq. calls for CW, phone and image only (no data, though I guess you can convert your output to CW), (2) you have to have a general-class license to use this, and (3) you have to broadcast your call sign every 10 minutes.But good job nonetheless. For those of you interested, the 1-chip transmitter (or something similar) were available on eBay for about $1 apiece last year (but most of them were general-class units).73 de kd0gzj",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162733",
"author": "Scott",
"timestamp": "2010-07-27T22:11:32",
"content": "The metal square is a “canned oscillator”. Apply voltage (5v) and it magically outputs square waves at the frequency stamped on the top. It’s temperature-compensated, and far more temperature stable than simple oscillator designs (i.e., Colpitts oscillator), which is why I selected it for the flight. In general they’re not really intended for radio transmitters, as they produce odd harmonics out the wazoo. They’re more useful for time-source, counting, and calibration purposes. I was lucky to have one on hand in a HAM band, and being licensed (AJ4VD) it was an easy snap-in choice for this project! In general, it’s not a good idea to use these things for any kind of serious RF transmitter designs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162735",
"author": "Hitek146",
"timestamp": "2010-07-27T22:14:38",
"content": "Looking at his code, it appears as if the last comments in the ON() and OFF() functions have been swapped…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162745",
"author": "knuckles904",
"timestamp": "2010-07-27T22:45:00",
"content": "Go Gators! Great project. Was it a Gainesville high school? Good luck in dental school",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162747",
"author": "Scott",
"timestamp": "2010-07-27T22:48:30",
"content": "I’m a dental student at the University of Florida. Go gators! The rest of the students were high school students from around the country who took an introduction to aerospace engineering course at UF (in association with NASA) for AP college credit. The faculty instructors were aerospace engineering grad students at UF. They pulled me into the project at the last minute because they know I’m all about hacking together ultra-cheap (yet surprisingly functional) radio transmitters",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1342680",
"author": "SOTB",
"timestamp": "2014-04-11T23:19:54",
"content": "Believe it or not the first person to invent radio transceiver was not Marconi nor Tesla. It was a dentist from Washington DC. He invented the first wireless Morse-Code network (7 miles in downtown Wash DC for the government) in 1870’s. Earlier in 1860’s he achieved a 14 mile distance between mountains in Virginia just after the Civil War. He was Dr. Mahlon Loomis.",
"parent_id": "162747",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162752",
"author": "Gottabethatguy",
"timestamp": "2010-07-27T22:58:18",
"content": "Best day on hackaday in a long long time! Thanks guys!Oh and keep submitting those great hacks all, all the projects today are really well done, crazy, impressive, and most of all…. hacks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162762",
"author": "Drew",
"timestamp": "2010-07-27T23:28:05",
"content": "This is a fantastic day at HaD- and this is a fantastic hack.I just met a guy in my class who’s a Ham operator- I’ll ask him about this. If it carries that far, good chance you have to be a higher level Ham to legally use this.If you do have to be so, this hack may be the sole reason I become a Ham operator- if I need to be one to use this, I will go get my certification!I am extremely impressed, though, at how small he made the entire transmitter, especially since it carries for 200 miles! I cannot comprehend how it can be so small and carry that far- I’ve never seen a transmitter this powerful and this small and simple. Very, very impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162781",
"author": "Scott",
"timestamp": "2010-07-27T23:34:57",
"content": "@Drew – AWESOME! I got my HAM license for this very reason! Radio is such a fun field to hack. I’m still working on the designs of a different project (no circuit diagrams yet intentionally) but if you liked this post, you’ll love these sneak peaks:~500mW transmitter:http://www.swharden.com/blog/images/DSCN0776.JPGSignal in Belgium:http://www.swharden.com/blog/images/qrss_aj4vd_belgium.jpgNote that my “antenna” is just 20ft. of small wire hanging inside my apartment! A little more work, then I’ll write it up with circuit diagrams and try to get it on HAD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162797",
"author": "Michael Bradley",
"timestamp": "2010-07-28T00:14:46",
"content": "Just curious, why power the oscilator from the uC, why not use the built in output enable in the 74hc240?Dont get me wrong, I like it, just curious.–mike",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162833",
"author": "Scott",
"timestamp": "2010-07-28T02:04:47",
"content": "@mike – Good question! Even with the amplifier completely disabled, power to the oscillator produced a loud enough tone to be heard. Rather that trying to decipher Morse code by listening to two different intensities of audio, I chose to completely kill power to the oscillator during the silent portions. This way the students were able to hear very clear Morse code on a portable radio receiver while we worked on the transmitter in the same room (even without the amplifier the audio was overloading the receiver, so turning the amplifier on/off wouldn’t have been as exciting to listen to during development). One of the disadvantages (unexpected perks?) was the loss of frequency stability. Those canned oscillators are rock-stable, but they take half a second or so to warm up. This “warm-up stabilization” can be seen on the image captureshttp://swharden.com/tmp/balloon/strong.PNG",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162835",
"author": "Drew",
"timestamp": "2010-07-28T02:08:16",
"content": "@Scott-I will too! I don’t know how hard it is though, I know next to nothing about Ham radio outside using oil pots to dissipate heat, and that really cool project that was able to send computer data over a radio signal- it was used to send medical charts after a power outage or something in my hometown of Pittsburgh- I can’t remember the name. It was like a much more advanced morse code for computer data.I will check out the links tomorrow, can’t wait to see what else you’re up to. I’ll print out your page and show my friend the ham and see what he says- and post the result here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162844",
"author": "axodus",
"timestamp": "2010-07-28T02:37:16",
"content": "nice hack :)Is there a way to build a receiver circuit that will be as simple as this transmitter?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162845",
"author": "Scott",
"timestamp": "2010-07-28T02:38:46",
"content": "@Drew – Feel free to contact me for details. My Gmail is on my website. I’d be more than willing to tell you (and anyone else interested) how to get a HAM license. They’re not hard to get, especially since the question bank is posted online! Just be careful what question bank you study, because questions are changed every 5 years and the entry-level (technician class) exam questions change in August this year I think. My wife got her technician license after ~2 hours of studying. A few months ago her cell phone was damaged (washed with the laundry) and we communicated via 144MHz FM radio for a couple weeks lol… glad we were both licensed! You should look into it. So much fun. Awesome learning. GREAT COMMUNITY!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162846",
"author": "Scott",
"timestamp": "2010-07-28T02:48:17",
"content": "@axodus – Yes, based on SA602. This is my receiver:http://www.swharden.com/blog/2010-06-10-qrss-receiver-works-barely/http://www.swharden.com/blog/2010-06-09-minimalist-radio-receiver/It’s rockbound (single frequency dep. on crystal), and it’s not amazing, but it’s certainly functional (especially for same-room transmitters lol) and cheap! (a few bucks) It’s far toucher to perfect than a transmitter. For “real” receiving of far-off signals you have to have a perfectly tuned circuit at the fronted to reduce AM radio interference, and maximally pass the signals of your desired frequency requiring some math to get the values for the required inductance / antenna matching / capacitance (variable). I’ve done it (details on those pages above) and only recommend it for tinkering value. There are better (but more expensive) designs out there. Google for “softrock” radio receivers – they’ve got some cool stuff going on!http://www.hanssummers.com/qrssrx.htmlis a beautiful design for 10.140MHz.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162891",
"author": "therian",
"timestamp": "2010-07-28T05:15:21",
"content": "Great material.ps too much talk about legality of this, but dont forget that FCC laws are equivalent to claiming ownership of sunlight or criminalizing vocal communication without permit, simply it abuse of everyone birth given rights",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162893",
"author": "DSC",
"timestamp": "2010-07-28T05:30:48",
"content": "Use it sparingly and for a specific purpose and wait for your day in court. But have fun in the meantime:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162896",
"author": "smoothp",
"timestamp": "2010-07-28T05:43:32",
"content": "Thanks! awesome hack, now my balloon shall soar! was worried about expensive xmitters",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162947",
"author": "Ru",
"timestamp": "2010-07-28T09:11:58",
"content": "“FCC laws are equivalent to claiming ownership of sunlight or criminalizing vocal communication without permit, simply it abuse of everyone birth given rights”Have a search for ‘tragedy of the commons’ and have a think about what might happen if radio communications were unrestricted. The fact that an organisation might be an unpleasant overbearing bureaucracy with unreasonable demands and expectations does not mean that it isn’t doing a very valuable job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162965",
"author": "ejonesss",
"timestamp": "2010-07-28T10:57:54",
"content": "not just fcc but faa.i remember a mythbusters episode where they tried to bring down a plane by using a cell phone to jam the navigation electronics and they was not allowed to put it in the air.also the 3rd harmonic will be 88.4736 mhz witch is just inside the fm range.not too big of a deal since fm radio is used mostly for music and entertainment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162983",
"author": "Scott",
"timestamp": "2010-07-28T12:33:25",
"content": "MY LEGAL RATIONALE – the ‘danger’ of border-line legal radio projects increases with output power. I’m licensed to use 29MHz (license AJ4VD), which I do feel is important. Amateur radio licenses are a good thing, as they do a great job at promoting education. Now, if I were transmitting 50,000 watts in this project, the FCC would probably have a larger axe to grind. However, in this project I’m using about 0.01W (probably less than the a wireless car door unlocker keychain) and since it’s practically undetectable, I’m not overly-concerned.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162998",
"author": "therian",
"timestamp": "2010-07-28T14:09:39",
"content": "“think about what might happen if radio communications were unrestricted”interfering guys get tired of each other and change frequency. Argument about chaos pretty much outdated and apply only to worldwide low-frequency communication, there is plenty local space,for exapmle WIFI prove this with only 14 channels",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163016",
"author": "IsotopeJ",
"timestamp": "2010-07-28T14:53:38",
"content": "So much talk about the legality of this! Check out 47CFR97 for the federal regulations regarding amateur radio.I just got my technician-level license, and can’t wait to try this!btw, 200 miles is nothing in amateur radio. and the FCC actually gives you a lot of privileges with your license…such as the ability to transmit at up to 1500 Watts in certain frequencies!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163018",
"author": "Michael Bradley",
"timestamp": "2010-07-28T14:55:01",
"content": "@Scott, Thank you, this makes sense now. great project, love the simplicity!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163020",
"author": "Scott",
"timestamp": "2010-07-28T15:06:05",
"content": "@therian – Of course microwave frequencies are wide open for the taking. Use them all you want and no one will compete with you …how many hundred miles do you think you can send a message on the ~2GHz wifi frequencies? There are advantages to low frequencies (i.e., sending messages around the globe with milliwatts at the expense of bitrate), and there is very limited bandwidth down there, and thus the ability to regulate its usage is necessary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163051",
"author": "Sine Wave",
"timestamp": "2010-07-28T16:28:05",
"content": "@therian-“ps too much talk about legality of this, dont forget that FCC laws are equivalent to claiming ownership of sunlight or criminalizing vocal communication without permit”Bad analogy.No matter how you choose to use sunlight on your property, nothing you do will prevent me from being able to use it, too. On the other hand, your abuse of RF spectrum space can deny me my rights to use it, too.Even a malfunctioning street lamp or a cracked insulator on a power pole, for example, has rendered large chunks of the lower HF ham bands unusable. I know, because when it happened locally, I used test equipment to pinpoint the sources of this unintended radiation and then worked with property owners and the power company to rectify those problems. These people acted in a responsible fashion.As to the matter of vocal communication, if you think there are no rules that govern it, try yelling “fire” in a movie theater or make a joke about a bomb while you are standing in line at an airport. I can guarantee that you will be contacted by someone with a badge who will be more than happy to explain to you why you *don’t* have the right to do those things.If there is too much talk of anything, there is too much talk of “rights” without any acknowledgement of “responsibility.” Adults recognize that rights and responsibility go together, and are inseparable. Adolescents think they are entitled to use the credit card without having to pay the bill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163128",
"author": "man",
"timestamp": "2010-07-28T19:16:14",
"content": "where is the circuit diagram for this project",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163129",
"author": "Scott",
"timestamp": "2010-07-28T19:21:36",
"content": "http://www.swharden.com/blog/images/balloon_transmitter_final.png",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3446632",
"author": "Brian",
"timestamp": "2017-03-12T02:27:58",
"content": "it may be prudent to add some filtering to the output to the output of the hc240..",
"parent_id": "163129",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "163132",
"author": "lwatcdr",
"timestamp": "2010-07-28T19:31:28",
"content": "@scott couldn’t you use this to create an automatic tracking system for the 900mhz directional antenna?If you sent the gps data by CW using your radio You could calculate the location to point the 900mhz antenna using some servos.You could also slave a camera to it for imaging of the balloon.Just a though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163157",
"author": "Drew",
"timestamp": "2010-07-28T21:12:52",
"content": "I talked to my friend, he wasn’t able to give me a clear answer since he didn’t have time to read the article I printed for him yet.I did my own research- it seems the lowest level, Amateur Technician class, can use SSB(Phone)& CW (continuous wave) in the band of 28.300 – 28.500 Mhz, which is roughly 10 meters, and the range your project works in. I don’t know anything yet, so I’m not sure if the signal your transmitter is sending out is one of those signal types.Thanks very much for offering to answer questions via email, I will take you up on that this weekend- my weekdays are insanely busy- I’m fortunate enough to be learning machining, welding, electronics, and OSHA training at my local college in an experimental manufacturing boot camp of sorts, and I’m meeting people into all kinds of cool Hackaday type backgrounds other than my machining background.Two last questions here though:1. What is the signal this uses called? I know it’s using Morse code, but what signal type is that? “CW”, “SSB”, or something else?2. Would a reciever for this be possible to be nearly as small? I’d like to control an RC plane for 200 miles shooting landscape photos on mountaintops.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163186",
"author": "truthspew",
"timestamp": "2010-07-28T22:32:29",
"content": "BTW, they have their call set to GO GATORS",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163226",
"author": "Scott",
"timestamp": "2010-07-29T03:00:10",
"content": "@lwatcdr – no need to use the 900mhz dish. I’d just send GPS data directly using FSK (frequency shift keying) to send the coordinates. Having a microcontroller send RTTY (radio teletype) also seems easy! There are so many possibilities…@Drew – I can see you’ve got a lot of energy! That’s awesome. In a nutshell:1.) Don’t limit yourself to the lowest radio amateur license (“technician”). Yeah it’s a start, but go ahead and get the 2nd level (“general”), then you can use any amateur band (the lower regions of which are reserved for the highest-level licensees) and have the whole spectrum at your fingertips.2.) Begin reviewing the material to get your radio license. You’ll learn about all the operating modes (SSB, FM, AM, CW), frequencies, and much more! It’ll give you a better idea of what’s used for what and why, such as why video is best sent on higher frequencies (i.e., 900MHz) and why *continuous wave* (CW) like what I used in this project is so good for low power transmission of Morse code!3.) Controlling an RC plane 200 miles away would definitely require something more sophisticated, but not outside the realm of hobbyists! Again, read the exam prep material! IMHO the best way is to read the question bank and Google why an answer is what it is if you don’t get it.4.) depending on where you live, you probably have an active VHF repeater within range. Think of it as an IRC server for local radio operators. Once you get on the air with an inexpensive VHF radio (I started with a $65 Puxing 777 from eBay) you’ll meet a lot of people on the air who can help you learn a ton just by talking to them, and probably even let you borrow equipment of your own until you know what you want to buy! Similar to how computer gurus have tons of old computers in a closet somewhere, a lot of radio gurus have tons of old equipment they’d be happy to lend out to an eager learner!Get that license and make some contacts =o)Once you have a working knowledge of major RF concepts, the world is yours for the hacking!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163389",
"author": "lwatcdr",
"timestamp": "2010-07-29T15:10:57",
"content": "@scottWhat I was suggesting was to use your system to send the GPS signal to a ground station that would then use that date to point the 900mhz dish. That way if you lost the connection with the 900mhz for some reason it might be possible to reacquire the signal with little effort.All you would need on the ground station is a GPS module and a compass module. You could even mount it on a car or pickup truck and have a mobile ground station.I have been thinking of doing something like that with a wifi data link using an old echostar dish. The problem I had was if for some reason the dish lost lock it would have a hard time getting it back. With your transmitter I would have a good long range data source to use for dish pointing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164090",
"author": "Alan Parekh",
"timestamp": "2010-07-31T04:15:29",
"content": "Love the simple transmitter design!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "325398",
"author": "sharx",
"timestamp": "2011-02-06T20:14:40",
"content": "my project is to communicate with two computers over RF but thanks for this it is helpful and if you can help me connect it to computer i will be much great full. thanks alot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2193343",
"author": "tugabus",
"timestamp": "2014-11-29T18:55:23",
"content": "#ScottCan u crate very long distance rf transceiver ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3239599",
"author": "Sean",
"timestamp": "2016-10-22T21:35:49",
"content": "Sorry to resurrect this thread but I happned to come across this hack and find it very interesting. Im doing a HAB project with my kids (Im about a year behind schedule), hopefully we will be launching 4/17. I’ve been looking for a backup transmitter and think this will work just fine. How did you program the ATtiny chip?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3446601",
"author": "Brian",
"timestamp": "2017-03-12T02:18:25",
"content": "I plan to use msp430 launchpad utilizing QRSS cw beacon firmware..forget the LED’s..save power and weight…using the free energia programming software its like programming an arduino..as a matter of fact porting exisiting arduino code to msp430 is easy",
"parent_id": "3239599",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "3446572",
"author": "Brian",
"timestamp": "2017-03-12T02:10:00",
"content": "Using QRSS techniques, really slow morse code, where the dits are several seconds long, and QRSS DSP/FFT software processing the static you ‘hear’ at that frequency, this transmitter can be heard globally…nice project..listen for my upcomming ‘pico balloon’ launches this summer",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4251004",
"author": "Gian",
"timestamp": "2017-12-14T20:25:15",
"content": "Who wants to link Ill make one in florida to host video games?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4454002",
"author": "Krrish",
"timestamp": "2018-04-02T13:28:35",
"content": "Can I use a different oscillator?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4454859",
"author": "Brian",
"timestamp": "2018-04-02T22:02:20",
"content": "I am experimenting with the SI5351 programmable oscillator. You can get a breakout board from adafruit or digikey for $8 US.You can program it for any frequency between 8Khz to 160 Mhz. Connect it to an arduino nano. I use mine to generate QRSS (really slow CW) and use the ARGO program to decode from a receiver connected to my sound card. It has 3 outputs and each can be a different frequency and can be enabled and disable independently",
"parent_id": "4454002",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,400.127984
|
||
https://hackaday.com/2010/07/27/making-nixie-tubes-at-home/
|
Making Nixie Tubes At Home
|
Mike Szczys
|
[
"chemistry hacks",
"classic hacks"
] |
[
"home",
"manufacture",
"nixie",
"tube"
] |
[Aleksander Zawada] makes vacuum tubes in his home. One of the most challenging builds he has taken on is to produce a working Nixie tube. He
describes the process in a PDF
(Internet Archive, updated 2024), covering his success and failure. It seems the hardest part is to get the tube filled with the proper gas, at the proper pressure, and firmly seal it. In the end he managed to make a tube with three digits (0, 1, and 2) that worked for about 700 hours before burning out.
[Aleksander] joins [Jeri Ellsworth] on the short list of hackers who can pull off extreme
industrial manufacturing at home
. Kudos.
[Thanks Duncan]
| 27
| 26
|
[
{
"comment_id": "162683",
"author": "kenneth",
"timestamp": "2010-07-27T20:05:38",
"content": "thank’s Hack a Day this is great rescearch and good to see posted here , keep up the good work ,good article and inspiration to analogue tubes for valve amplifiers for example guitars , thumbs up and a great day to you guys ;O)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162688",
"author": "biozz",
"timestamp": "2010-07-27T20:16:25",
"content": "i have been wanting to make tubes for a long ass time and now i can finally start gathering parts!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162689",
"author": "svofski",
"timestamp": "2010-07-27T20:20:38",
"content": "Isn’t her name Jeri?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162695",
"author": "zool",
"timestamp": "2010-07-27T20:29:34",
"content": "Geri Ellsworth? is that Jeri’s brother?i’d like to see nixie tubes in weird shapes and funny symbols",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162697",
"author": "Mike Szczys",
"timestamp": "2010-07-27T20:36:17",
"content": "@svofski: Yes it is, thanks. Fixed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162725",
"author": "Sol",
"timestamp": "2010-07-27T21:56:53",
"content": "from the pdf, this is the spirit of the hack:”It may seem to be crazy and impossible but I try. The writers in all available books have said: “Making homemade tubes is impossible.” I believed them for a long time, but I wanted to try.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162728",
"author": "asheets",
"timestamp": "2010-07-27T22:04:19",
"content": "A Nixie is quite a challenge. I’m still waiting for this person (http://home.earthlink.net/~lenyr/) to scale up his homemade CRT a bit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162787",
"author": "Drew",
"timestamp": "2010-07-27T23:59:21",
"content": "I seem to remember seeing this PDF a while ago…Still, HaD is hacking paradise today. This is an exceptionally difficult project.I hope Aleksander is reading this, as I have some advice, because I was going to try this myself, and have done a ton of research. Forgive me if you know these already- it wasn’t clear from your PDF if you knew about these parts:The most difficult part is the glass to metal seal for sure, you got that right. 3 things that can make it much easier for you:1. Get a glass tempering oven. In my city, Pittsburgh, PA, we have the Glass Factory, a dedicated glass-blowing/casting facility and mini glassblowing college. I learned from doing some over work there glass will shatter far less if you have a tempering oven. The oven acts as a controlled cooling chamber that takes a lot of the internal cooling stress out of the glass, by slowly un-heating it over a time curve set for a glass type. If you can’t buy one, find a local shop that has one and rent time on it. Glass needs a day or more to cool properly to lower2. Use boro, or borosillicate glass. You didn’t mention what kind of glass you were using. Start with good, pure borosillicate or pyrex (trade name for a specific borosilicate glass)- and…3. This is where I think you’re having the most trouble- You’re using copper. The thing about glass to metal seals is, you need to match the thermal expansion curve to a metal with a similar curve, or one stays too big in cooling and cracks the other.Two metals with very close thermal curves to borosilicate glass are Kovar, and Tungsten. Both have been used for metal to glass seals, and believe it or not, I found both on ebay in wire spool form, perfect in size for making vaccum tubes, nixies and whatnot. Kovar is very expensive, apparently. Both should work much better than copper- sealing tighter to glass, and causing less breakage even without thermal tempering.I figure, you could always seat pins on top of the metal through the seal, and plug on your nixie internal asembly, as it were, if you wanted to. The glass connection is the tricky part. If you wanted it to last longer, you could get the internals platinum plated very, very thinly, or add a very very small drop of mercury metal to the inside of the tube to assist as a getter. Many nixies and triodes did that, I’ve read.I’ve found general Paschen’s curves for nixie gas mixture, but nothing with actual numbers on a scale to aid in plotting. Just a general picture like you found. Have you found anything more exact with values attached? This is what keeps me from attempting the nixie build, along with not having a vaccuum pump.Have you considered blow molding your nixie tubes for more consistent stresses and volume calculation?I applaud your success- you’ve gotten further than I, so forgive me if I said something you already knew and didn’t mention in your work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162794",
"author": "Drew",
"timestamp": "2010-07-28T00:07:18",
"content": "I forgot one thing- if you want to try using a steel-tungsten alloy for parts of this, and you have the capability of melting steel (who knows, maybe you have a homebuilt arc furnace- some here apparently do) try this:Tungsten melts at 6192 Degrees F, way too high to melt at home. BUT- one of my teachers has told me that you can actually dissolve tungsten into molten steel. It’s one of tungsten’s strange properties, it will completely dissolve in molten steel, and you can precipitate the tungsten out by dissolving the steel in acid. He used to work for a company that did just that apparently.It might be pointless to mention, but if you find a way to melt steel at home (build a simple arc furnace with some carbon arc welding rods), you could technically cast tungsten/steel mixes for digit annodes/cathodes, or make your own hybrid wire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162847",
"author": "r_d",
"timestamp": "2010-07-28T02:53:59",
"content": "Every one of today’s posts are excellent. Giant CO2 lasers, diy computers, vacuum/nixie tube building, and RF transmitters. Great stuff and I hope to see more like this from HaD in the future.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162851",
"author": "Ivan",
"timestamp": "2010-07-28T03:12:10",
"content": "Cool, but I need homemade transistors and LEDs :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162883",
"author": "Kyle",
"timestamp": "2010-07-28T04:33:06",
"content": "Dude! That is just cool. And I’d like to echo the sentiment I’ve seen expressed numerous times lately – these latest hacks are great! True hacks! Nicely done – this is the kind of stuff I come here for.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162888",
"author": "grenadier",
"timestamp": "2010-07-28T04:57:27",
"content": "Needs dumet seals?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162897",
"author": "Kyle, also",
"timestamp": "2010-07-28T05:47:35",
"content": "well i don’t have time to review the whole thing tonight but since my ‘brother from another mother’ posted i will at least take the time to chime in too.there is only a handful of people that could pull this off with home based resources and even fewer that would take the time to do so, that makes this a great hack!we see so many college group hacks and senior projects, not to downplay ANYONES work (i posses about half the knowledge to fully understand most the stuff here in the first place), but it gets a bit ehhhhh. you know how many RFID dorm locks can we see in between something really unique.and today has been a plethora. good job aleksander and the rest of the hackers today and thanks HaD for bringing it to all of us.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162937",
"author": "Aleksander",
"timestamp": "2010-07-28T08:26:06",
"content": "Thanks for all!This pdf is rather old. Now I have better laboratory than 2-3 years later.Usually I use soda glass. The coefficient of thermal expansion is ca. 100E-6 K^-1.I have small electric oven with big thermal capacity. That’s why cooling is very slow.I use borosilicate glass, but only for aparature. Not for tubes. In Poland is kind of this glass called “termisil” and “silvit” (this is old glass). Unfortunatelly, the coefficient of thermal expansion isn’t good for vacuum-tight connection with any metal.Sometimes I use molybdenum (kovar) glass (In Poland it’s usually kind called “ZS5Na” or “ZS5”), but rather only for vacuum gauges.Pyrex glass is very expensive; it’s good glass for aparature.I prefer “soft” soda glass, although this glass “love” glass stress.I buyed a lot of special wires with copper for vacuum- tight connection with soda glass.Preparing glass wafers with wires isn’t any problem. I’d like to prepare glass disks, but it’s difficult.Sometimes I add mercury inside nixies, but I hate mercury, because it’s poisson:/.About gas mixture: I have some luck: In my job I found a few time ago, old steel bottles 10l with neon-argon mixture (Ne-0,1%Ar -if I remember well). It’s from ca. 1989, when in my job was exeperiments about PDP displays. In the old article form 1963 I found that the pressure in nixies should be 20-30 Torr. But I fill my tubes “on eye”- for the best lighting.Having this steel botlles with gas mixture, I haven’t any problem with volume of tube.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162949",
"author": "Tachikoma",
"timestamp": "2010-07-28T09:17:10",
"content": "For more DIY vacuum projects, check:http://www.teralab.org/index.htmhttp://paillard.claude.free.fr/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162952",
"author": "elkolord",
"timestamp": "2010-07-28T09:46:14",
"content": "Just a sidenote:According to the PDF the Tube is NOT burned out, it is still working. Just the glass is getting a little bit brown.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162957",
"author": "Aleksander",
"timestamp": "2010-07-28T09:58:52",
"content": "Exactly. This tube not “dead” after 700 hours.About preparing simple neon tube in my kitchen- see this movie:http://www.youtube.com/watch?v=TJ0Pm4swoOoIt was in 2009.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162977",
"author": "arcnemisis",
"timestamp": "2010-07-28T11:42:21",
"content": "Thanks HAD and Aleksander @http://www.tubedevices.com/alek/superb work and hacking..Keep it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162986",
"author": "Khordas",
"timestamp": "2010-07-28T12:42:12",
"content": "If you’ve got the ability to alloy your metal for electrodes, an iron and thorium alloy might work too. The radioactivity from the thorium apparently makes the strike voltage a lot lower by pre-ionizing the gas a bit. Same reason tungsten welding electrodes often have thorium in them. I suppose if you were melting some tungsten into your iron, as suggested above, you might as well use the tungsten thorium alloy, for the benefit of both.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163065",
"author": "qwerty",
"timestamp": "2010-07-28T16:58:16",
"content": "Maybe it was posted here or somwhere else before but I think the fabolous video will help to understand the process of production os such lamps.Great site but in french.http://paillard.claude.free.fr/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165006",
"author": "Joe Bonasses",
"timestamp": "2010-08-03T01:05:46",
"content": "Hey Hackaday, what are the requirements to be considered being listed under “extreme industrial manufacturing at home”? You’ve got my attention now…..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305151",
"author": "zeropointmodule",
"timestamp": "2011-01-15T09:15:57",
"content": "interesting note re. tungsten.Plus its easy enough to get hold of in the form of welding rods for not that much $.has anyone run into the “microwave smelter” ? a while ago someone discovered that you can generate temperatures in excess of 2000 degrees using an unmodified domestic MW oven.-ZPM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3281169",
"author": "Phillip Remaker",
"timestamp": "2016-11-21T04:56:42",
"content": "This is now all at tubedevices.net.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6530388",
"author": "Unix_Man",
"timestamp": "2022-11-10T02:24:23",
"content": "Anyone can send me a copy of the PDF? Link is dead.Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6731406",
"author": "Andrew",
"timestamp": "2024-02-14T10:35:07",
"content": "the link is dead and goes to a porn site :D",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6731733",
"author": "Tom Nardi",
"timestamp": "2024-02-15T01:27:32",
"content": "Yep, that’s porn alright. I’ve changed the links to Internet Archive mirror.",
"parent_id": "6731406",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,400.049004
|
||
https://hackaday.com/2010/07/30/diy-picture-frame-better-than-store-bought/
|
DIY Picture Frame Better Than Store Bought
|
Mike Szczys
|
[
"home hacks"
] |
[
"capacitor",
"computer",
"dos",
"lirc",
"ms-dos",
"picture frame",
"single board"
] |
[Daniel’s]
homemade digital picture frame
looks great, it’s well-built, and it has a nice set of features. It’s not
made from a broken laptop
and he didn’t
build it around a microcontroller
. Instead, he saved a 19″ LCD monitor with a burnt out back light caused by the
extremely common blown capacitor problem
. Twenty dollars on eBay landed him a small industrial single board computer to drive the system.
The software end of things is a curious conglomeration but considering the hardware constraints [Daniel] made some great choices. He’s using MS-DOS along with LxPic for slide shows and Mplayer for video. The rest of the software gets him up on the home network and enables IR remote control via LIRC. All o this makes for a beautiful product (video after the break includes some Doom footage) and the package is pulling just 40W when in use.
| 22
| 22
|
[
{
"comment_id": "163846",
"author": "MrX",
"timestamp": "2010-07-30T17:20:49",
"content": "MS-DOS? Seriously?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163851",
"author": "Brennan",
"timestamp": "2010-07-30T17:30:15",
"content": "OK, good for him that he just happened to have a single board computer laying around. But for anyone else trying to recreate this, SBC’s are not cheap, even on ebay.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163852",
"author": "Thomas",
"timestamp": "2010-07-30T17:33:35",
"content": "Yea why pirate ms dos when he could have atleast used freedos",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163853",
"author": "Zengar",
"timestamp": "2010-07-30T17:35:24",
"content": "@Brennan: it says up there that Daniel didn’t have the SBC lying around, rather that he picked it up for $20 on Ebay.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163854",
"author": "Zengar",
"timestamp": "2010-07-30T17:37:31",
"content": "okay, that’ll teach me to trust the writeup, following the link, Daniel says that he had it just lying around. may bad, as well as Mike Szczys’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163855",
"author": "Zengar",
"timestamp": "2010-07-30T17:42:23",
"content": "And then reading further I realized that it was his first board that he just had lying around, but that the board in the final insallation was indeed bought for $20. I think I’ll shut up now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163856",
"author": "roswellaliens",
"timestamp": "2010-07-30T17:43:55",
"content": "1) locate a broken aspire one with the extemely common blown power connector fault (dead short between pin and Gnd)2) repair connector by removing the shell, pins etc then if short still present cut the board down level with the Gnd edge pin and sand until clean.3) retest, if short gone solder wires to +V and Gnd pins where the fuse sits.4) install now-fixed board with drive, flash etc and screen, etc into picture frame.Simplez :-)I am currently working on a version of this where eight identical boards (512MB/250GB) sit in a shuttle case with a 19V 20A power supply to drive them.Cooling is relatively simple, the existing fans are preserved with a piece of metal to act as the heatsink and supports for the drives and GPUs with air blowing through the case from front to back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163861",
"author": "osgeld",
"timestamp": "2010-07-30T18:08:56",
"content": "I just got a micro itx 1.6ghz atom board for <50$ on ebay so there is plenty of options out thereaside from some repairs and some nice frame work, he basicly plugged a monitor in to a PC?mk, though it does look really nice",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163901",
"author": "tidux",
"timestamp": "2010-07-30T19:49:16",
"content": "Can somebody explain how he’s running all of those programs at once on a single-tasking operating system?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164029",
"author": "Haku",
"timestamp": "2010-07-31T00:04:37",
"content": "Smashed screen Asus Eee’s and the ilk are a good source of PC mainboards for this kind of hack, they have memory/SSD/wifi already so there’s not a lot extra you need to add. Their low power consumption is welcome too.I’m looking forward to full colour e-ink displays becomming cheap and commonplace as they’d make ideal electronic picture frames because they should’t need power to hold an image.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164065",
"author": "cmholm",
"timestamp": "2010-07-31T02:35:54",
"content": "As Thomas pointed out, FreeDOS is out there, w/ TCP/IP support. To reduce power consumption further, I’d be tempted to *not* fix the tube back light, and go with the “LED LCD backlight replacement” hack.If one were willing to risk only a little more cash, considerable power savings could be realized with a (*cough*) suitable low cost micro-controller board mated to the “PICASO VGA/SVGA Graphics Controller” (3.0-3.6V @90mA) at Sparkfun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164066",
"author": "cmholm",
"timestamp": "2010-07-31T02:38:36",
"content": "Re: the “saving” I mentioned… in this case, it’d be a watts v. coding hours trade-off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164084",
"author": "Franklyn",
"timestamp": "2010-07-31T04:03:05",
"content": "what video after the break ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164110",
"author": "Osgeld",
"timestamp": "2010-07-31T06:13:39",
"content": "@cmholmonly if you like wasting your time on watching pixels draw, I have a DEC386 laptop which is doing 640×480 256 colors with IBM (ms) PC dos over a wifi bridge and has basic graphic internetthat is a 32 bit 25mhz cpu with a meg of video ram and 4 meg of system ram … and its drag ass on even basic pages / imagesas stated above I snagged a netop board with a crappy but snappy Intel integrated (shit) video atom based pci express / sata / ddr2 for < 50 bucks from a \"new pull\" ebay buy it now deal, bang for the buck, and to get the job done, its silly IMO to seek lesser systems out for this type of function, when for minimally more you can do everything a modern pc is expected toI also snagged a 17 inch Piece Of Shit LCD screen last year for 20 bucks, yellow case and holes in the base, but it works out of the box, no repair no fussnot that I am not displeased with this project, but seriously, its a flat screen connected to a PC, running MS-DOS like its a big deal, CPM and DOS were the dominate OS system for the majority of years on the PC of choice, hell my dual core x86 amd runs friggin MS-DOS 6.22 to this date nativity, and there is a reason for that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164139",
"author": "cmholm",
"timestamp": "2010-07-31T08:30:03",
"content": "@OsgeldRe: drawing speed, point well taken. I pay $0.35/kwh, so my power saving fantasies sometimes get the better of me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164141",
"author": "MoJo",
"timestamp": "2010-07-31T08:35:06",
"content": "The problem with MS DOS is that the CPU never idles. It busy loops all the time. It doesn’t power down any of the hardware either.I don’t know if FreeDOS does that as well but if he switched to an OS with proper low power states he could probably get the power consumption down by 10W.I added a LDR to an LED clock I made so that it can sense when it’s dark and reduce the brightness of the display. This project could do something like that to turn the monitor off at night when no-one is going to look at it. It would extend the life of the screen too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164191",
"author": "Einomies",
"timestamp": "2010-07-31T12:30:09",
"content": "I’d think you would turn off an LCD picture frame anyways as you turn off the lights in the house to sleep.That said, 40 Watts for a picture frame is LOTS. You could justify it if it was 4-5 Watts, but 40 is just stupid, since most of the time nobody is looking at the picture.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164313",
"author": "MS3FGX",
"timestamp": "2010-07-31T19:14:03",
"content": "JUST 40 watts? That is more than my server consumes at full load with both drives running, seems rather excessive for a picture frame. As others pointed out, looks like there are many missed opportunities for power saving here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164395",
"author": "Gibbo",
"timestamp": "2010-08-01T00:38:48",
"content": "Lies!! theres no video after the break tut tut…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164508",
"author": "mr-midnight",
"timestamp": "2010-08-01T13:09:49",
"content": "I have to agree with Einomies. I have considered buying one and flash it with some Firmware hack. Having a hacked evo T20 consuming 6.5 watts I that has a thousand more options I decided that if I want a picture frame I will just convert the screen to one :)Aside from these considerations the frame looks great and definitely competes with the frames out there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164547",
"author": "Shadyman",
"timestamp": "2010-08-01T17:45:20",
"content": "@cmholm:35c/kWh? Ouch!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "409303",
"author": "Daniel",
"timestamp": "2011-06-23T20:11:20",
"content": "MoJo: Interesting that you think I could save 10W if the cpu would idle when the entire computer uses 4-5W. The rest is used by the monitor and the shitty laptop style power supply that uses about 8W even when unplugged from picture frame… And BTW LED’s don’t have THAT much higher lumen/W output than CCFL’s. I’d rather have the even light spread produced by ccfl’s.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,399.986165
|
||
https://hackaday.com/2010/07/30/tethering-the-samsung-vibrant-without-rooting/
|
Tethering The Samsung Vibrant Without Rooting
|
Mike Szczys
|
[
"Cellphone Hacks"
] |
[
"kies",
"samsung",
"t-mobile",
"Tether",
"usb",
"vibrant"
] |
If you’ve got a Samsung Vibrant and want to take advantage of that unlimted 3G account you can
tether without rooting the phone
. This method uses a USB cable to provide internet access to Windows XP and Windows 7 computers. Samsung’s own Kies software handles the tethering, as long as you have the magic number to get connected on T-Mobile USA networks; ‘epc.tmobile.com’ for the APN name and ‘*99#’ as the phone number. [Zedomax] made the video after the break which takes you through the tethering ritual.
[youtube=http://www.youtube.com/watch?v=8jIJRu9gXvU]
[Photo credit:
Tnkgrl
]
| 12
| 12
|
[
{
"comment_id": "163835",
"author": "sixx",
"timestamp": "2010-07-30T16:31:09",
"content": "doesnt it work over wifi like it does with the galaxy?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163956",
"author": "Eric",
"timestamp": "2010-07-30T21:51:55",
"content": "No it doesn’t. Not without root.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163961",
"author": "NatureTM",
"timestamp": "2010-07-30T22:05:10",
"content": "Sure looks a lot like an iPhone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164085",
"author": "Someone",
"timestamp": "2010-07-31T04:06:42",
"content": "Can you just use June Fabrics’ PDA Net?(weird name btw)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164121",
"author": "wdfowty",
"timestamp": "2010-07-31T07:12:26",
"content": "@sixx That is a galaxy S, just the tmobs-branded version. AT&T has the captivate and Sprint has the epig 4g.@naturetm it does from that angle, but looks completely different head-on@someone PDAnet is a POS. It’s all about FroYo, usb and wifi tethering 4 all!My question is, what’s so bad about rooting? It doesn’t break the warranty, you get so many cool features…I can’t even think of a downside…It’s still all about the Nexus XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165237",
"author": "James",
"timestamp": "2010-08-03T18:39:38",
"content": "Any word of how to get this working with the AT&T version (captivate)? I don’t have one yet but I’m thinking about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167506",
"author": "keang24",
"timestamp": "2010-08-11T06:40:10",
"content": "It used to work until I rooted, now i got “Ras Creat Phone Failed”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167946",
"author": "proresearch",
"timestamp": "2010-08-12T19:19:19",
"content": "if you get ras creat phone failed, then restart program as administrator, or go to services and restart “telephony” service.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "208137",
"author": "rockjock",
"timestamp": "2010-11-05T16:46:50",
"content": "Tethering doesn’t work anymore… says “device not supported” ever since tmob update.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "213713",
"author": "adam",
"timestamp": "2010-11-17T05:24:15",
"content": "I have confirmed what “rockjock” stated. Doesn’t work anymore since the ota update. T-Mobile killed it. Just switched from AT&T and it doesn’t look like they are any less stingy when it comes to broadband sharing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "379932",
"author": "vibrams",
"timestamp": "2011-04-14T07:03:55",
"content": "if you get ras creat phone failed, then restart program as administrator, or go to services and restart “telephony” service.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "577191",
"author": "herculz",
"timestamp": "2012-02-07T09:06:40",
"content": "will this work on a sprint,epic 4g",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,400.176852
|
||
https://hackaday.com/2010/07/30/2010-ninja-party-badge/
|
2010 Ninja Party Badge
|
Mike Szczys
|
[
"cons"
] |
[
"badge",
"defcon",
"network",
"ninja",
"party"
] |
Wired took a look at
this year’s Ninja Party badges
. We were giddy about all the goodies involved in
last year’s must-have badge
that served as an invitation to the party. It was tailor-made for hacking, including an on-board disassembler.
This year’s details
are still a bit sparse but the offering is more along the lines of a market-ready product. The badges come in hand held gaming format, with a d-pad and two buttons. They can connect wirelessly with each other and with hidden base stations, allowing participants to fight in the digital realm for LED-indicated achievements. The teaser is tantalizing and we can’t wait to hear details about the real/digital gaming adventure soon to unfold.
| 19
| 19
|
[
{
"comment_id": "163800",
"author": "techrat",
"timestamp": "2010-07-30T14:02:07",
"content": "These kids have too much money and free time. But then again, they’ll be (assuming they aren’t already) working for chip designers in Silicon Valley… It’s obvious their hardware skills are top-notch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163807",
"author": "diego",
"timestamp": "2010-07-30T14:28:44",
"content": "a badge… naturally :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163808",
"author": "Brennan",
"timestamp": "2010-07-30T14:34:39",
"content": "That PCB design is just beautiful. I wish I had one of these just to play around with on my own.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163813",
"author": "dnafrequency",
"timestamp": "2010-07-30T15:21:28",
"content": "saying someone has “too much free time” after they did something cool just reeks of jealousy. i’ll bet the creators have just as much free time as you do. what do you do with your free time?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163814",
"author": "fartface",
"timestamp": "2010-07-30T15:22:26",
"content": "Uber cool….Watch out for people going to the Pirate party… They will try and snag your badge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163820",
"author": "Aron",
"timestamp": "2010-07-30T15:34:30",
"content": "No one in Ninja party is a kid.I feel next year they will be handing out full on laptops. Their party is up there next to FailBlog’s party. Many lulz.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163825",
"author": "Roman Dulgarov",
"timestamp": "2010-07-30T15:54:34",
"content": "Mmm…looks like its zigbee wireless communication.I want one! GIME GIME GIME!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163831",
"author": "snow",
"timestamp": "2010-07-30T16:22:31",
"content": "i want one ^^ very nice indeed.i hat a hard laught after seeing RTFM at the bottom of the “quick guide” :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163838",
"author": "andar_b",
"timestamp": "2010-07-30T16:42:34",
"content": "zomg…I wonder if Ninja Burger is catering? o.OLove that game XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163839",
"author": "wifigod",
"timestamp": "2010-07-30T16:44:46",
"content": "@techratThey were sponsored by Facebook and Lookout Mobile Security. I’m pretty sure they didn’t spend to much of their own money. ;-)Also, there were two teams of multiple people, with each person working on specific areas of the badge. So I’m pretty sure it wasn’t an issue of “too much free time” as much as it was a wonderful team effort.Supposedly they’re going to update their site after Defcon with a build log. I’m hoping the parts aren’t TOO hard to find, because I would LOVE to make a clone. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163865",
"author": "M4CGYV3R",
"timestamp": "2010-07-30T18:36:06",
"content": "That is a pretty epic badge.Is there any info out yet on the regular DefCon badges? Those are steadily improving too, and I love all the little hidden goodies they stick in them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163894",
"author": "RedNeckJoe",
"timestamp": "2010-07-30T19:30:23",
"content": "What about the rest of us lowly mortals ?Maybe my age is showing, but reminds me of theold “Studio 54” in NYC. Where hordes of desperatefolks would line up outside a door hoping to bejudged ‘worthy’ of being allowed admittance.This “invite only” thing reeks of “elite”-ism.(or is that 3l33t) ?Some of us anti-social types never played wellwith others and did our own thing. Wouldn’t besurprised if someone showed up with a wide areaRF jammer rendering the “wireless” aspect ofthis toy useless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163905",
"author": "Mike Szczys",
"timestamp": "2010-07-30T20:09:09",
"content": "@M4CGYV3R: Yep, I’m working on a post about the conference badges. Just trying to gather all the info I can. Look for it later today or tomorrow morning.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164079",
"author": "Shadyman",
"timestamp": "2010-07-31T03:49:29",
"content": "I notice the LCDs come from Adafruit:http://www.adafruit.com/blog/2010/07/28/defcon-ninja-party-badge-sneak-peek/— That’s also an amazing price for even 1 unit of a serial LCD display.@Brennan: I’d totally hit it, too. Here’s hoping for schematics/BOM/whatnot after the con!@Roman Dulgarov: The MC13224V is what is providing the Zigbee. Check out Redbee’s Econotag for fun :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164384",
"author": "ducksauz",
"timestamp": "2010-07-31T23:19:15",
"content": "Here’s some inside scoop on the Ninja badges, as I’m friends with a couple of the folks involved and got the scoop from them last week.First, full schematics, code, etc will get posted sometime fairly soon after Defcon is over. Keep an eye onhttp://ninjas.org/badges/defcon18.html. It will all get there, just as it did for last years badge.Second, this badge is totally hackable. Sure, the finished product is uber cool, but there is definite potential to load your own code up on the MC13224v processor. There’s an FTDI programming header on board and you can code using the OpenEmbedded or Contiki enviroments. Check outhttp://mc1322x.devl.org/for details.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164511",
"author": "mr-midnight",
"timestamp": "2010-08-01T13:24:00",
"content": "@RedNeckJoeSure most “outsiders” are jealous when they see this type of events with free goodies and high-tech toys. But in the end the people being invited to these events are on our side when it comes to developing new ideas into real life “toys”.Let them have their parties so we can get our toys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164578",
"author": "Shadyman",
"timestamp": "2010-08-01T19:27:09",
"content": "@ducksauz:Yay for ducksauz! If I was at DEFCON, I’d totally be replaying packets left and right.I figured that the schematics and other goodies would be out once I found the ninja page and saw that last year’s badge had them released :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164960",
"author": "seric",
"timestamp": "2010-08-02T22:00:12",
"content": "@RedneckJoeThere are plenty of official defcon events which all can obtain. Maybe if we were back at Tropicana or Monte Carlo with 200-400 attendees then everyone could have a badge/invite to the private parties. But that is not possible at the Defcon of today. Who is going to sponsor a party of the same caliber for 15,000-20,000 people?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165637",
"author": "Jorge",
"timestamp": "2010-08-04T22:45:58",
"content": "I actually ended up having a conversation with one of the ninjas about the hardware and he gave my buddy and me two badges.They were giving a lot of badges out at the conference. They spent some time in the Hardware Hacking Village, i know they probably gave around 10-20 out there along.The party was pretty awesome, facebook dropped $30k on alcohol alone.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,400.231874
|
||
https://hackaday.com/2010/07/29/super-simple-gaming-controller-for-android-or-iphone/
|
Super Simple Gaming Controller For Android Or IPhone
|
Mike Szczys
|
[
"Cellphone Hacks",
"home entertainment hacks",
"iphone hacks",
"Nintendo Hacks"
] |
[
"android",
"emulator",
"iphone",
"remote",
"wheel",
"wii"
] |
If you’ve got an iPhone or Android device that you use with a Wii remote when gaming, this quick hack will give you the third hand you need to manage all of that hardware. [Syanni85]
mounted his Android phone to a Wii wheel
for just a few dollars in parts. He ran across the wheel itself at the dollar store, and the phone is held in place using a universal mounting bracket. A small square pad sticks onto the back of any device and mates with a base. He cut off the unnecessary parts of the base and glued it to the back of the wheel.
If you haven’t tried using a Wii remote with your phone yet, find out how to
do it with iPhone
or
with Android
.
| 19
| 19
|
[
{
"comment_id": "163414",
"author": "pod",
"timestamp": "2010-07-29T16:13:13",
"content": "I have to admit this is a pretty smart idea",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163415",
"author": "biozz",
"timestamp": "2010-07-29T16:16:05",
"content": "would go great with the nes emulator :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163417",
"author": "Brad Hein",
"timestamp": "2010-07-29T16:54:18",
"content": "I like it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163423",
"author": "Chad B",
"timestamp": "2010-07-29T17:43:05",
"content": "NBA JAAAAAMMMMMM!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163424",
"author": "diego",
"timestamp": "2010-07-29T17:45:00",
"content": "eheheh nice! KISS rulez :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163428",
"author": "Darkrocker",
"timestamp": "2010-07-29T17:49:28",
"content": "Simple, cheap, looks great and should work great to. Probably not a hack but definitely a cool mod that’s worth the effort :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163446",
"author": "JohnSmith",
"timestamp": "2010-07-29T19:09:16",
"content": "Simple, cheap, looks good and is very much a hack. The wheel was certainly never intended for this. What more is required for something to qualify as a hack?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163449",
"author": "Errorist",
"timestamp": "2010-07-29T19:22:12",
"content": "How can you play NBA Jam without a turbo button?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163450",
"author": "Nicko01",
"timestamp": "2010-07-29T19:30:58",
"content": "This definitely qualifies as a hack. Earlier today I found out how to use a Wii remote as a controller for PSX4Droid and I was thinking about something like this.I’m sure you can get these Wii wheels used for cheap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163451",
"author": "Syanni85",
"timestamp": "2010-07-29T19:32:28",
"content": "The back trigger on the wiimote is set to turbo… So NBA Jam is EPIC and super easy to play!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163459",
"author": "japkin",
"timestamp": "2010-07-29T20:47:09",
"content": "The link in your iPhone+Wiimote story is dead. Anyone know where to find the tutorial?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163460",
"author": "Syanni85",
"timestamp": "2010-07-29T20:52:11",
"content": "Link still works for me..But here you go:http://forum.ppcgeeks.com/showthread.php?t=129886",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163461",
"author": "Syanni85",
"timestamp": "2010-07-29T20:55:23",
"content": "Oops, i link my thread at ppcgeeks. Sorry, i can’t seem to find anything even with google",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163462",
"author": "vonskippy",
"timestamp": "2010-07-29T21:06:52",
"content": "And think of how impressed your boss and co-workers will be when you pull that out of your briefcase at your next management meeting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163464",
"author": "japkin",
"timestamp": "2010-07-29T21:09:00",
"content": "Sorry, I meant the links in this story were broken:http://hackaday.com/2009/08/05/wiimote-iphone/I’ll do some searching if no one else knows. Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163598",
"author": "Jim Foster",
"timestamp": "2010-07-29T23:31:43",
"content": "Wow, simple but pretty awesome. very nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163742",
"author": "mostlymac",
"timestamp": "2010-07-30T05:54:27",
"content": "Now if you could only get that Wiimote speaker to pipe out the sound… then you could have some pseudo-surround sound.Course, I’ve never actually gotten the whole Wiimote+iDevice thing working, so maybe the speaker does work and I’m just out of the loop. Regardless, I love this little “hack” :) Great answer to the lack of physical buttons on the iPhone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163795",
"author": "strider_mt2k",
"timestamp": "2010-07-30T13:39:12",
"content": "damn damn damni920 Omnia 2 winning winmo6.5The thing would look so great running this way, but it’s the lame duck winmo dragging me back again.Next phone-Android.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398423",
"author": "MustangJohn",
"timestamp": "2011-05-27T03:26:52",
"content": "I was playing an online fps on my iPhone and the controls were difficult to use, so I was wondering if there was a way to connect my ps3 controller to my iPod. I searched around but all I could find was the wii remote, and i wanted to use sticks instead of tilt. Anyone know if this would work?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,400.285111
|
||
https://hackaday.com/2010/07/29/graphic-calculator-as-a-spectrum-analyzer/
|
Graphic Calculator As A Spectrum Analyzer
|
Mike Szczys
|
[
"Wireless Hacks"
] |
[
"calculator",
"graphing",
"i2c",
"port expander",
"texas instruments",
"ti",
"wifi"
] |
[Michael Vincent] turned his
TI-84 Plus into a spectrum analyzer
. By running some assembly code on the device the link port can be used as an I2C bus (something we’ll have to keep in mind). After being inspired by the
cell phone spectrum analyzer
he set out to build a module compatible with the calculator by using an I2C port expander to interface with a radio receiver module. Now he can sniff out signals between 2.400 and 2.495 GHz and display the finds like in the image above.
[Thanks Cecil]
| 9
| 9
|
[
{
"comment_id": "163390",
"author": "Xiver",
"timestamp": "2010-07-29T15:19:01",
"content": "Very nice. I’m going to try and duplicate this project. Thanks for the work and explaination Michael.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163437",
"author": "Erik",
"timestamp": "2010-07-29T18:19:40",
"content": "Oh this looks very nice, I might try this myself if I come across a cheap calculator. Because I have the ti83 so it will not work on mine I guess.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163471",
"author": "GCL",
"timestamp": "2010-07-29T21:18:51",
"content": "Amazing! I might try some of his other ideas.@Erik, according to his pages, it might even be portable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163645",
"author": "Ti83",
"timestamp": "2010-07-30T00:46:48",
"content": "@ErikFrom the article: “The software is for the 83+/83+ SE/84+, however with minor modifications it will work on any TI calculator.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163791",
"author": "M4CGYV3R",
"timestamp": "2010-07-30T13:22:36",
"content": "”the link port can be used as an I2C bus”Whaaaaaaaaa…?That’s friggin awesome. I’ll have to break out my 84+ and try some stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163794",
"author": "7e",
"timestamp": "2010-07-30T13:35:34",
"content": "Sorry, i just had to link to this-> :Phttp://imgs.xkcd.com/comics/1996.png",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164027",
"author": "Cecil",
"timestamp": "2010-07-30T23:53:30",
"content": "I looked at his documentation and the little bit of source and it seems that TI calcs interface is a basic Hi-Z interface.In other words it is a shared bus where any device can pull a line low. Both bits of the port are read/write so a simple bit banged I2C interface to flash, D/A, Temp or other devices is quite simple.Maybe a level shifter or buffer just in case as I have no idea on the sink levels or how the pull up’s are set up.All in all a great hack that can be widely expanded.-C",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164123",
"author": "sariel",
"timestamp": "2010-07-31T07:16:21",
"content": "this is perfect! i just acquired an 84 silver the other day. sweet hack man! just need to hack together the IO cable",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "473158",
"author": "kevin",
"timestamp": "2011-10-06T01:32:32",
"content": "i think it’s great ,but i have not a ti counter.Unlucky",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,400.332427
|
||
https://hackaday.com/2010/07/29/ice-tube-clock-gps/
|
Ice Tube Clock GPS
|
Devlin Thyne
|
[
"clock hacks",
"gps hacks"
] |
[
"ice",
"tube"
] |
Our favorite Soviet-Era display that found its way into a present-day
kit
now
displays time from orbiting satellites
. A GPS module patched into an Ice Tube Clock with
modified firmware
will be able to provide a satellite-synced time. The firmware, modified by yours truly, parses the GPS module’s NMEA RMC sentences for the time and date information and then updates the clock’s time and date. Fun was had making sure the alarm went off at the correct times when the time was updated by the GPS. Overall, it was a fun project and we look forward to seeing additional Ice Tube Clock hacks.
| 22
| 21
|
[
{
"comment_id": "163361",
"author": "MS3FGX",
"timestamp": "2010-07-29T13:33:06",
"content": "Nice job, but wouldn’t it have been cheaper, easier, and more practical/accurate to sync up with an atomic clock? I seem to recall HaD running a simple project that used one of the atomic clock radios; the module only cost something like $10 and was exceptionally easy to interface with.Bonus points for style using GPS, but certainly a downside to this build is that it won’t work unless near a window with a clear view of the sky.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163367",
"author": "pt",
"timestamp": "2010-07-29T13:56:08",
"content": "with all projects, it’s about trade offs. you can use an atomic clock but for some people they do not work in many areas, and the there are many things to design around depending on the project –here’s a project that details some of the challenges (interference, grounding, shielding, antennae needed, etc)http://duinolab.blogspot.com/search/label/C-MAX%20CMMR-6P-60for the gps it’s just getting time so the same type of fix isn’t required, we’re using ours in nyc, works great.all that said, it’s an open source hardware project – we expect there to be a variety of hacks and mods, from gps to atomic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163370",
"author": "013",
"timestamp": "2010-07-29T14:06:34",
"content": "The next feature to add would be time zone adjustment based on current location. “Never set your clock for anything again!”This has the added bonus of being easily hackable. How many people have issues with old clocks, VCRs, etc, because they had incorrect Daylight Savings Time dates, and I couldn’t find a way to correct it? That changeover in the US was maddening! I still have to go across the street to reset my neighbor’s VCR twice a year. The date only goes up to 2010 on it now, so I’ve had to loop back as well.@MS3FGX: I can pick up GPS in the middle of my house with no direct line of sight to the sky. I have a Garmin GPS18 USB and a Moto Droid, both of which get good signal. Just check your position first.Plus, with this hack, you can run a wire to the window, or if you’re really fancy, use a solar panel and a wireless transmitter to get it inside the house.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163374",
"author": "_matt",
"timestamp": "2010-07-29T14:25:23",
"content": "As one of the few lucky to not have to deal with DST (arizona), I hate when auto-set clocks don’t have the option to turn it off.Anyway, that display is awesome looking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163376",
"author": "fartface",
"timestamp": "2010-07-29T14:29:44",
"content": "VCR? wow… do they also have a hand crank phonograph?Operator Give me Falco 6 9000…..Dang it I left me bloomers at the cleaners!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163383",
"author": "Devlin Thyne",
"timestamp": "2010-07-29T14:43:25",
"content": "@MS3FGX, and to clarify what pt said:The GPS module, once it has received a time and date from the system, will keep time without a fix as long as its RTC is powered. In testing, I placed the clock and GPS in a cast iron dutch oven and it still kept time.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "163406",
"author": "MS3FGX",
"timestamp": "2010-07-29T15:52:04",
"content": "@Devlin,Well sure, it will keep time without a GPS lock…but it is just using the RTC on the chip which is no more or less accurate than any other RTC chip you could plug into this device. So what would be the advantage there? You might as well just add the ability to set the time over serial from a computer and let the onboard RTC run with it. Unless you are getting constant drift adjustments, there is no point. So the GPS module must always have a good lock to maintain accuracy.I have experimented with using GPS time on my server over NTP in the past, and found that the biggest problem was that the time accuracy seemed to change with lock quality. It looks like your code simply makes the assumption that if the date is set right, so will the time. But in practice (at least with my hardware) I noticed drifts of several minutes when the GPS had only a few locked satellites compared to a full lock.That said, when it did work, accuracy with GPS was pretty good. Looked to be somewhat more accurate than NTP when you consider network latency delays. But overall I found it not worth the trouble, so scrapped the whole thing.",
"parent_id": "163383",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "163384",
"author": "tbase",
"timestamp": "2010-07-29T14:51:41",
"content": "The iGoogle widget is showing the full size pic without expanding this article, blows out the whole page layout. Just sayin’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163386",
"author": "tbase",
"timestamp": "2010-07-29T14:53:10",
"content": "…oh yeah, and also, anyone having this same problem, go to the [v] menu and “minimize this gadget” to fix the layout until this article gets fixed or moves off the page.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163430",
"author": "polossatik",
"timestamp": "2010-07-29T17:55:54",
"content": "Does it take Leap Seconds into account?http://en.wikipedia.org/wiki/Leap_second",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163438",
"author": "tim",
"timestamp": "2010-07-29T18:27:30",
"content": "it is sad that gps doesn’t work indoor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163441",
"author": "Hirudinea",
"timestamp": "2010-07-29T18:40:48",
"content": "Hey that’s pretty neat, but shouldn’t you be getting your time from GLONASS?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163499",
"author": "error404",
"timestamp": "2010-07-29T21:47:22",
"content": "@MS3FGX: Since GPS requires a particularly good clock, I suspect that the RTC on the GPS module is likely quite a bit more accurate than the cheap one in the clock itself. But who knows…If your GPS was drifting by minutes something was more wrong than reception, I reckon. If the GPS is decoding any satellites at all it will be getting the full UTC time code. If it’s unable to decode them, it shouldn’t be using a partially decoded signal, and it certainly shouldn’t drift any more than a normal RTC.GPS itself should be quite a bit more accurate than decoding a radio time signal like WWV, but you really need a receiver designed for timing that outputs a 1PPS signal to get to the few-us accuracy that is possible. Just going by NMEA timing most receivers are only spec’d within 50ms or something, which isn’t very good. NTP can probably do better with a stable network against a stratum 1 server.But does it matter? The clock only displays time anyway, it’s not like it’s some kind of precision measuring device, so in the end I agree: cheaper = better in this situation :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163555",
"author": "roswellaliens",
"timestamp": "2010-07-29T22:47:32",
"content": "heh.. i bought a bunch of these tubes a little while ago.Maybe mount some on a bicycle wheel and make a “VFDPOV” ? :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163737",
"author": "ml",
"timestamp": "2010-07-30T04:46:13",
"content": "thats how mil tac comm gets time",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163743",
"author": "brian4120",
"timestamp": "2010-07-30T05:55:41",
"content": "I bought a lot of 5 tubes several months back, I really need to break them out one day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163756",
"author": "jeditalian",
"timestamp": "2010-07-30T07:43:27",
"content": "i have one of those gps modules.. pretty sure. its on a board, theres that one, then one for Rx and one for Tx. guess i couldnt just rip it off and wire it up..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163790",
"author": "strider_mt2k",
"timestamp": "2010-07-30T13:20:45",
"content": "What a cool project!It even looks like it should! ;)I like the idea of combining a couple of different schemes for the “never set again ever” clock idea too…and with Nixies! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163828",
"author": "Ethan",
"timestamp": "2010-07-30T16:10:34",
"content": "Nice! I happen to have just picked up a bare Ice Tube PCB just this week and should have some IV-18s on the way _and_ I have a couple of vehicle-embedded GPS pods that would all play nice together. I’ll have to see about grabbing the new firmware and hacking on it.Perfect timing. Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163857",
"author": "Orv",
"timestamp": "2010-07-30T17:54:59",
"content": "I’ve been thinking of adding this to my own Nixie clock build. It seems like it’d be easier and have fewer potential pitfalls than trying to build a VLF receiver for WWVB.What’s a good source for inexpensive GPS modules?As an aside, I think an interesting coding exercise would be to use GPS time to “rate” an internal crystal oscillator and slew it to the correct time, kind of like NTP does, so you could get consistently accurate time with no abrupt jumps. In theory, if you save the correction factor in non-volatile RAM, this should create a clock that gets more accurate over time, even when a GPS signal isn’t present.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164082",
"author": "Scoops",
"timestamp": "2010-07-31T03:53:15",
"content": "Just thinking out loud, but would it be possible to get timestamps off of SSIDs that are floating all around us these days?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164685",
"author": "elektrophreak",
"timestamp": "2010-08-02T06:47:28",
"content": "I really need a clock this accurate… NOT :-)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.227959
|
||
https://hackaday.com/2010/07/28/flipping-pancakes/
|
Flipping Pancakes
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"arm",
"flip",
"kinesthetic",
"motion tracking",
"pancake",
"robot",
"wam"
] |
[Petar and Sylvain] are
teaching this robot to flip pancakes
. It starts with some kinesthetic learning; a human operator moves the robot arm to flip a pancake while the robot records the motion. Next, motion tracking is used so that the robot can improve during its learning process. It eventually gets the hang of it, as you can see after the break, but we wonder how this will work with real batter. This is a simulated pancake so the weight and amount at of force necessary to unstick it from the pan is always the same. Still, we loved
the robotic pizza maker
and if they get this to work it’ll earn a special place in our hearts.
[Thanks Ferdinand via
Flabber
]
| 26
| 26
|
[
{
"comment_id": "163102",
"author": "MiGs",
"timestamp": "2010-07-28T18:18:57",
"content": "Impressed! It never gets tired, nor does it need to be happy to make food, and the best part is you don’t need to wear a matching shirt every time you go outside!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163104",
"author": "Anon",
"timestamp": "2010-07-28T18:22:40",
"content": "@ MiGsHaha, well you can’t have sex with it, or, can you?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163106",
"author": "Dremation",
"timestamp": "2010-07-28T18:24:27",
"content": "Great, now scramble my eggs and butter my toast and I’ll be happy. So the logic of this is using predictive outcome?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163109",
"author": "sd",
"timestamp": "2010-07-28T18:32:37",
"content": ">scramble my eggs and butter my toast and I’ll be happyThat sounds like prison lingo for something rather unpleasant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163114",
"author": "Mikey",
"timestamp": "2010-07-28T18:40:19",
"content": "@Anon, I suppose you could, but don’t you think that would make the pancakes taste funny?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163115",
"author": "andar_b",
"timestamp": "2010-07-28T18:44:21",
"content": "@AnonSoon…soon. :p But then the pancake/sex bots will make artificial pancake/sex bots to satisfy their desires, and they’ll run off together and leave us all alone. QQ",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163116",
"author": "MB",
"timestamp": "2010-07-28T18:45:06",
"content": "@SD Thank you. I will never look at my breakfast quite the same now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163117",
"author": "Nick",
"timestamp": "2010-07-28T18:46:03",
"content": "Do you guys share links with BoingBoing?They happened to have the same post several days ago",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163134",
"author": "Piku",
"timestamp": "2010-07-28T19:38:56",
"content": "Right now McDonalds are watching this and wondering how to train it to flip burgers.;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163142",
"author": "McSquid",
"timestamp": "2010-07-28T20:11:23",
"content": "@pikui doubt it as long as people are still willing to do it for $5 an hour",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163184",
"author": "fcobcn",
"timestamp": "2010-07-28T22:20:06",
"content": "WANTED: pancake cooking “personal” trainer for my bot,knowledge about spanish “tortilla de patatas” is highly bonused.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163189",
"author": "dreamer.redeemer",
"timestamp": "2010-07-28T23:03:37",
"content": "That’s pretty weak compared to the first robot arm here:http://rootproblem.blogspot.com/2010/03/technology-ii-state-of-art.htmlThis one reminds me of how little use we have for humanoid robots, given the number of humanoids already present. The emphasis is probably more about the machine learning, but there’s no information about that here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163193",
"author": "Squirrel",
"timestamp": "2010-07-28T23:07:10",
"content": "“amount at of force” typo?@Pikudoes mcdonalds even flip burgers any more? I thought they just had some machine with two heated plates that’d sandwich the burger and cook it speedily without the need for flipping",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163199",
"author": "Osgeld",
"timestamp": "2010-07-28T23:53:26",
"content": "yea most do, apparently it was too difficult to teach someone a tiny skill in life",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163365",
"author": "rob",
"timestamp": "2010-07-29T13:43:53",
"content": "@osgeldIt’s called FAST FOOD. It cooks TWICE AS FAST.Figure it out, genius.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163407",
"author": "BLuRry",
"timestamp": "2010-07-29T16:00:18",
"content": "Yay! Flips pancakes without breaking them and, most importantly, won’t spit in my food. I’m sold.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163426",
"author": "BenJ",
"timestamp": "2010-07-29T17:46:22",
"content": "It really got batter near the end of the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163454",
"author": "BeatJunkie",
"timestamp": "2010-07-29T19:53:39",
"content": "@dreamer.redeemerThank you very much for the link. I haven’t seen the first and the second vid before.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163488",
"author": "amodedoma",
"timestamp": "2010-07-29T21:38:02",
"content": "Barret Tech.’s WAM arm is to drool over. It’s a mad robot scientist’s dream come true. Go check it out!http://www.barrett.com/robot/index.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163617",
"author": "docstober",
"timestamp": "2010-07-29T23:48:42",
"content": "@PikuThe McDonald’s I was at in the late 90’s (it was a decent High School job) had a robot for making fries. Load the hopper with fries from the bags, it filled the baskets and then dropped ’em and pulled ’em. All you had to do was tell it how many pounds/hour or some such. They eventually got rid of it because of all the maintenance it needed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163651",
"author": "Todd Grigsby",
"timestamp": "2010-07-30T01:12:59",
"content": "That pancake sounds yummy… (CLANG…. CLANG….)As for McDonalds, it would be cheaper in the long run, would never need breaks, wouldn’t get sick, wouldn’t take vacation, you only need one of them, if it gets injured it doesn’t sue, etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163751",
"author": "Totti",
"timestamp": "2010-07-30T06:47:25",
"content": "50 iterations of to learn to flip pancakes might be impressive!However, as a surgery robot the 50 kills to learn how to use a scalpel might be a tiny bit to high, or ? Or imagine they use it as an autonmous operator of an atomic power plant, pilot autonomous robot, ……*booom*Well… anyhow this worked out nice for the scientific standard pancake “SSPC”… which means not it work out nice for practical usage. How about more/less weight, bigger/smaller, sticky/non-sticky, lower/higher softness pancakes.Guess this is still very tricky to achieve since it requires heavy feedback considerations.I would say McDonalds workers are save for the next few years",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163782",
"author": "Justin",
"timestamp": "2010-07-30T11:45:42",
"content": "The only comment I have is in regards to the rigidity of that pancake! Have you ever seen one that rigid?! Nope? Me either.Flippin’ a floppy pancake is a whole different ballgame, heh. Great start, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163792",
"author": "strider_mt2k",
"timestamp": "2010-07-30T13:23:17",
"content": "Waiter, there’s a Nylock nut in my soup…(Oh man…Methinks there’s an off-color joke lurking somewhere in there, too.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164041",
"author": "bob",
"timestamp": "2010-07-31T01:01:35",
"content": "Only a matter if time before machines start flipping people out of 40 story buildings as they conquer the world. We’re all doomed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164124",
"author": "wdfowty",
"timestamp": "2010-07-31T07:17:50",
"content": "Wow…What’s next??? Robots that make our cars, phones, and computers???…oh wait…",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,401.924956
|
||
https://hackaday.com/2010/08/01/multi-purpose-welding-cart/
|
Multi-purpose Welding Cart
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"cart",
"harbor freight",
"mig",
"plasma",
"welding"
] |
[Todd Harrison]
put together a welding cart
that has all kinds of tricks built-in. The carcass is a cheap rolling cart that has been reinforced with steel plate and beefier wheels. The top tray can be loaded up with fire brick for oxygen-acetylene welding or with a grate for cutting. That grate lets the slag fall through and into the red-rimmed fire-box below. Finally, there’s a steel plate to the right of the cart that rotates and slides over the top of the unit to prepare it for MIG welding. Todd walks us through his versatile invention in the video after the break. This will nicely augment
your other welding hacks
.
[youtube=http://www.youtube.com/watch?v=mR1cLIOf_Vc]
| 11
| 11
|
[
{
"comment_id": "164550",
"author": "ladz",
"timestamp": "2010-08-01T18:00:31",
"content": "Neat.Just add a removable “top hat” kind of shell to that firebrick section and you’ve got a little forge too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164566",
"author": "DrDoug",
"timestamp": "2010-08-01T18:55:47",
"content": "kudos to the camera person!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164571",
"author": "Alex",
"timestamp": "2010-08-01T19:09:21",
"content": "That kicks ass.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164587",
"author": "PhilKll",
"timestamp": "2010-08-01T20:15:02",
"content": "Wow thats awesome. I have one of those carts thats fairly old now. Looks like he took care of the problem areas, the flat parts of the shelves sag over time with that much weight on them. And the wheels, nice touch. Only wonder about the legs bending or getting wobbly, nothing some angle iron behind the sheet metal couldn’t fix, I guess.+1 for the camera crew",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164605",
"author": "D_",
"timestamp": "2010-08-01T22:33:34",
"content": "Maybe I missed it, but there is one thing missing. Angle iron with the open side facing up along one long side of the cart, with an opening at the center. Nice job all on all, but I’m left wondering if Todd couldn’t had ended up with a sturdier cart for not that much more money, if started from scratch? My dad rarely passed up a post vise at farm or other actions. No one else wanted them, and generally they go cheap. Not the most perfect vises in the world, but good enough as a sacrificial vise for welding. When one is shot toss it on the scrap metal to sell pile, and grab another from the “warehouse”. For such a little man the videographer done well, and can only improve with age and experience. Dad should tell him to go ahead and do what he think is best",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164617",
"author": "tfs",
"timestamp": "2010-08-01T23:38:01",
"content": "Ah harbor freight, how much I dislike that place. But great job for beefing up the cart and making do what you need it to do. Welding carts are great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164621",
"author": "Marzuess",
"timestamp": "2010-08-02T00:25:50",
"content": "Very nice, complete with an etch-a-sketch too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164704",
"author": "Cameron Watt",
"timestamp": "2010-08-02T08:20:07",
"content": "It’s a nice bit of work but not my cup of tea.My two cents on welder carts of any sort is that when you make up power cords to supply power to the welder be sure run a neutral line out, even if the welder itself doesn’t need it, so you can install a 110v outlet for tools on the cart itself; then there is only one cord to manage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164740",
"author": "Philip",
"timestamp": "2010-08-02T11:27:10",
"content": "That ledge around the workshop would trip me up daily…and its too clean ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164896",
"author": "Jake",
"timestamp": "2010-08-02T18:42:30",
"content": "Unless you’re looking to spend a hundred bucks (or maybe more), reinforcing one of these cheap $30 carts is better. However, if you are willing to look around you (and your neighboring cities) for auctions where shops/schools/etc are selling their stuff, you can get a much, MUCH better cart for maybe $50. I have the exact same cart in this mod, it has served me well over the last decade but is showing wear.I bought a unit that weighs probably 4 times as much at an auction (for $40, lol) that will hold my MIG welder, plasma cutter and all the crap I have fastened to the top of it, and the wheels are big enough that they don’t get stuck in the cracks in my concrete.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "183373",
"author": "Ho0d0o/Heatgap",
"timestamp": "2010-09-20T18:33:59",
"content": "Well done. This cart is kick ass. The kid did great filming as well. Awesome job man.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.091864
|
||
https://hackaday.com/2010/08/01/save-a-baby-nursery-temperature-monitor/
|
Save A Baby, Nursery Temperature Monitor
|
Jakob Griffith
|
[
"home hacks",
"LED Hacks"
] |
[
"AVR",
"baby",
"led",
"monitor",
"schematic",
"SIDS",
"temperature"
] |
Yes, you could argue this
Nursery Room Temperature Monitor
is simply an LED and an Arduino with a temperature sensor, but [Jay] really did put more thought into the process. For instance he stuck with AVR, built a wooden base and sanded globe, and even included schematics and source code. Plus,
SIDS
is no laughing matter and the more you know, the more it can be prevented. Back on point, one thing we would add is PWM for a more gradual change in color. What would you add?
[youtube
http://www.youtube.com/watch?v=NdjNMlmBXfA&feature=player_embedded%5D
| 36
| 36
|
[
{
"comment_id": "164526",
"author": "Simon",
"timestamp": "2010-08-01T15:38:57",
"content": "Another globe connected to it wirelessly (or many globes connected to a master with LCD) to report the temperature when you aren’t in the room.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164527",
"author": "Nick",
"timestamp": "2010-08-01T15:42:29",
"content": "Love it, basically a DIY version of the Grobag Egg:http://www.google.co.uk/images?q=grobag+egg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164529",
"author": "Sam",
"timestamp": "2010-08-01T15:54:00",
"content": "This is one area you do not want to do DIY. You may think you’re smart and have everything worked out, but one “bug” and there could be serious consequences: starting a fire, false sense of security because the device fails to work, strangulation on a loose cord,…. but mostly, it is the scenarios you can’t imagine or predict. I give this build an ‘A’ for the idea, and a ‘C-‘ for not buying a robustly tested commercial product.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164530",
"author": "nemo",
"timestamp": "2010-08-01T16:02:04",
"content": "@Sam-That is ridiculous. This only adds helpful information. If it fails there is not a higher risk of injury or damage than there already was present.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164533",
"author": "Tech B.",
"timestamp": "2010-08-01T16:31:24",
"content": "Maybe judge the temperature of the baby itself via thermal imaging.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164534",
"author": "macewan",
"timestamp": "2010-08-01T16:39:19",
"content": "I certainly hope a new Dad would put more thought into protecting a baby than what’s found on this page. blah… Well, no shiiit. He showed a simple hardware hack not a life lesson for pops world round.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164535",
"author": "JBot",
"timestamp": "2010-08-01T16:47:23",
"content": "@Sam: Did you read the article? This device isn’t any more a fire hazard than your average cell phone charger. Also, you’d be negligent to put it within the baby’s reach…just like blind cords, keep them away from the baby and you’ll be fine. If the device does fail to work, you can fall back on the fact that you can feel “wow, this room is warm.” You are going to be in that room just as much regardless of this device, so it wouldn’t be difficult at all to judge this.There are many ways you could cross the line and put your baby at risk with your DIY contraptions. This isn’t one of them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164536",
"author": "bothersaidpooh",
"timestamp": "2010-08-01T16:49:30",
"content": "add a humidity sensor as well maybe?alternate idea, an audible alarm when the temperature rises too high..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164538",
"author": "dnny",
"timestamp": "2010-08-01T16:53:30",
"content": "SIDS is not caused by temperature.And I agree whit Sam here.I have Philips avent baby monitor and its great for temperature monitoring, you can see the temperature from the remote whit numbers … + you can preset a alarm on wanted point.If you like to prevent SIDS, there is baby monitor systems for that.. but instead of temperature they monitor movement.A sensor mat is placed under the bassinet or cot mattress. If no movement is detected for a certain amount of time, for example, 20 seconds, an alarm sounds on the remote (parent) receiver.http://infantstoddlers.suite101.com/article.cfm/motion_sensor_baby_safety_monitors",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164541",
"author": "Sam",
"timestamp": "2010-08-01T17:18:33",
"content": "Once again, I’m not worried about the ways you think you’ve made your device safe. I’m worried about what you forgot about or failed to do. I’ve done lots of DIY projects, and they almost always require tons of testing before they work as intended. I would not leave anything in the room alone with my baby unless it has been thoroughly tested. I’m not saying commercial products are 100% safe, but they get tested by the company who made it and by the tens of thousands of parents that bought it before you.You would think that you’d be smart enough to build something as simple as a crib for your baby, but look at the crib they pulled from the market recently because of the babies that got strangled. If you used a similar design for your own crib, you’d never realize the hazards until it was too late.I’m totally fine with using your home built devices around consenting adults, but never endanger the lives of the helpless.@ nemo, If the device reports the temperature is fine, but in reality it is not, then it can cause harm. Information is only useful if it is reliable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164553",
"author": "Yui Daoren",
"timestamp": "2010-08-01T18:05:22",
"content": "“Concern Troll” alert.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164554",
"author": "Haku",
"timestamp": "2010-08-01T18:07:35",
"content": "If you make devices to monitor your baby/child and rely on them to the point where you don’t physically go in and check them with your own senses then you are stupid.Remote monitoring devices are great because they can provide peace of mind, when friends had a baby 4 years ago I gave them a wireless camera with IR LEDs and a 5″ LCD with the receiver attached to the back of it, it was a great help to them because it meant they didn’t feel compelled to constantly go and check on the baby, which meant both the baby & parents could rest in peace.But having the camera setup didn’t mean they left the baby alone completely, it was used as an aid not a substitute.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164556",
"author": "M4CGYV3R",
"timestamp": "2010-08-01T18:13:32",
"content": "You could always…I don’t know, buy a $5 thermometer and mount it near the door to check?Interesting build, but not hardly as practical as an actual quantitative thermometer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164559",
"author": "John",
"timestamp": "2010-08-01T18:23:55",
"content": "No one knows what causes SIDS. SIDS is a known unknown. The Medical field has lots of “IDEAS” about what causes an infant to “suddenly die”. BUt NO ONE KNOWS for sure. Scaring new parents into buying the useless sh*t because of fear of SIDS is the best marketing scheme since packaged beard. Babies dies, sometimes that death is SUDDEN. The exact reason for the death is UNKNOWN. kudos for creativity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164560",
"author": "Franklyn",
"timestamp": "2010-08-01T18:27:09",
"content": "I would definitely add an lcd display to get an actual reading.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164562",
"author": "Dettori",
"timestamp": "2010-08-01T18:37:01",
"content": "Fair play to you. Found out recently that we’re expecting and I’ve been trawling the web looking for cool funky home-brew ideas to geek the nursery up!The angelcare ac401d is a pretty cool system that takes care of this side of things(remote receiver with temp gauge), but if anything you’ve done here, is that you may just have started a trend of geeking the nursery! c’mon dads and dads-to-be… get inventing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164579",
"author": "Aaron",
"timestamp": "2010-08-01T19:42:10",
"content": "Sarah Hrdy did some research into SIDS, and found that something like 75% of “SIDS” cases were actually infanticide. Don’t know how an AVR’s going to prevent that, tho.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164581",
"author": "Gottabethatguy",
"timestamp": "2010-08-01T19:49:29",
"content": "Ummm, my parents didn’t have any fancy gizmo’s to gadgets to protect me. And I’m still here. Babies are way tougher than most people would think.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164584",
"author": "M H",
"timestamp": "2010-08-01T19:59:26",
"content": "What would I add – how about smell monitoring?Of course the baby will provide a lot of that monitoring and alarm function itself. But if you could work out something with a gentler alarm that would notify you before the main alarm sounds.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164588",
"author": "Travis",
"timestamp": "2010-08-01T20:17:52",
"content": "@ GottabethatguyPerhaps you’ve heard of this,http://en.wikipedia.org/wiki/Anecdotal_evidence",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164619",
"author": "Totti",
"timestamp": "2010-08-02T00:11:07",
"content": "In my opinion, and yes I’m a dad as well, all this SIDS stuff is just to scare the heck out of new parents and scrub some more money from them….Just thing logically. Move to some more hot places, more southern. There, all this rules of the perfect temperature will not work at all. At the moment I’m just sitting here in a country with 34 C and a humidity close to 100%. And guess what… they have a lot of healthy babies here. And SIDS is the same or (luckily) less an issue like in all other developed countries.As far as I know, all this heavily overpriced baby alarms didn’t proof (scientifically) at all that they might prevent SIDS.Don’t be a fool and jump on some advertisement campaign. I know people believe to think … “for my kid only the best” but believe me there are hundred of thousands other possibilities to spend your money for your kid.Just to make it not OT…. I like the idea and the construction of the hack. I can only partial share the idea that a commercial design is more save. Over the last 3-5 years I had an enormous amount of wall-plug power converters and cheap electronic melting down and dying. This really becomes significant. Don’t tell me that this cheap no-name stuff is more save then a home-made solution. Did you ever open such a thing? It scares the heck out of everyone who is aware of Ohms law. And yes even if you buy expensive stuff you could bet that at least the power-converter is again a cheap no-name product from China.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164620",
"author": "D_",
"timestamp": "2010-08-02T00:21:20",
"content": "[Shakes head]I’m not one to pass of safety/security concerns, but… Nemo is correct, a failure of this device as designed, doesn’t but the child at any greater risk, than the child would have been previously. Like most warning devices, it’s assume it’s an adjunct to other monitoring practices. Personally I feel an audible alarm would be best. Doesn’t have to scream like a fire alarm in the baby’s room, but would be a good idea to have an audible alarm in the parent’s room sufficient to wake them up. Any fire hazard posed, most likely is no greater than electronics cased in thermoplastic enclosure. Taking stated figures(at jaycollet & here in the comments) at face value; 75% of 25% of births end in infanticide? That’s an incredibly high number.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164622",
"author": "NFN_NLN",
"timestamp": "2010-08-02T00:29:13",
"content": "I built a semi-permanent rectal thermometer for added monitoring. The Arduino wraps around the baby’s leg and there is a probe going up it’s a$$.I hope to modify it to monitor flow control and viscosity in the future.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164634",
"author": "Ryan Leach",
"timestamp": "2010-08-02T01:32:24",
"content": "@ D_ where the hell did you read that SIDS happens to 1/4 of babies born? If it is true it certainly is news to me and I’d suggest it needs to be fact checked against different sources.also you trolls that are saying that a temperature controlled color LED could be dangerous need to think. its not like this is mounted to the babys head.from the linked page its powered by“9. A power source. I used an old Netgear router power supply. 5V regulated output at 2.0A.”tell me how is this any worse then the power cord connected to a baby monitor, if you even use baby monitors…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164639",
"author": "John Bokma",
"timestamp": "2010-08-02T01:48:37",
"content": "Our kids sleep with us, our recently born son and our 3 you daughter. Sleeping with the parents reduces the risk on SIDS. No need for electronic monitoring etc. Personally, I think it’s the best option. Or to paraphrase something I read sometime ago: if one carries a child for 9 months inside the body why put it away in its own room immediately after birth?Also, it makes breastfeeding way easier, no need to get up etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164649",
"author": "OpCode1300",
"timestamp": "2010-08-02T02:37:38",
"content": "first of all congrats!My first will be here any day now and I was in the same boat. php counters , IR webcam, arduino light/temp deal.now that I am on the last few weeks. i just want to see my son. most of the stuff i did at first has been reused for other stuff (reef tank) etc.just enjoy the time you have now ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164668",
"author": "carzRfun",
"timestamp": "2010-08-02T04:35:09",
"content": "@John BokmaPlus it discourages the production of additional kids that you have to monitor lol. Win win situation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164675",
"author": "sqnewton",
"timestamp": "2010-08-02T05:56:55",
"content": "I think it is a nice project for fun and certain peace of mind. I also had my baby recently and my wife and I read tons about that.The monitors are sort of lame. Some false alarms, plus, when the monitor detects that the baby stopped breathing, it is anyway too late already.From the studies that we read, the best practices to reduce the risk of SIDS are:– the baby should sleep facing up for at least the first 6 months– make sure that the air circulates. Install a small fan or anything that avoids stagnant air– use common sense in other areas (no blankets, loose clothes, etc.It is believed that the SIDS can be causes by accumulation of CO2. The infant body high CO2 “detector” isn’t mature enough to properly react to a high level of CO2. In other words, the baby won’t be able to move or wake up to reposition himself when CO2 is high, until his brain matures.Bottom line: very nice project (for fun), use common sense and safety measurements, make sure the baby sleep facing up, well air the room, and most important, enjoy this beautiful age. Congrats for your baby!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164705",
"author": "leafy",
"timestamp": "2010-08-02T08:40:19",
"content": "how about an in-cot CO2 monitor, apparently build up of CO2 around the baby, especially if face down, can be an issue. (open sided/barred cot should prevent this but a blanket could make a reservoir)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164724",
"author": "James",
"timestamp": "2010-08-02T09:34:04",
"content": "@Sam, what world are you from? This is a large thermometer. It sits in the same room as the child, not in the cot or as a toy to be played with. The baby would never come in contact with it and it’s no more liable to cause a fire than any other powered DIY project in your house, so on that token you might want to stop ever doing any DIY projects just in case. Seriously, I’m all for testing and ensuring things are safe within reason, but the key here is within reason. An adequately fused and protected PSU should prevent fire, it’s a cold project (there’s no hot items) and all it does is provide information. There’s safe and there’s paranoid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164769",
"author": "JayCollett",
"timestamp": "2010-08-02T13:12:36",
"content": "Interesting to see the discussion spawned from this. I was expecting more critique of the idea/implementation but I think this does bring up a very good topic, I think as a “maker”, I take it for granted that my stuff is FAR safer in many cases than commercial purchased stuff. I trust my designs and think I understand the conditions of use far more than folks who just pay ChinaMart for something. Would be interesting to see how many folks (a poll perhaps) don’t trust DIY electronics, never really thought about it…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164825",
"author": "Mark H",
"timestamp": "2010-08-02T15:45:24",
"content": "@JayCI trust my DIY a lot more than most off the shelf items simply because I try to think of anything possible going wrong. Often with retail items they think of what they need to add to the product to get it to pass good enough to make it to retail. Don’t trust brand names either unless you are 100% sure they are the ones that actually make the product. subbing out work is bigger than ever.For example I bought an aquarium heater. It consist of a glass tube sealed with a rubber stopper and bi-metallic switch. There is no fuse, no safety if it slips into water (wires just pass through stopper so loosely you can see light around it, if switch gets stuck no safety cutoff, it will just keep heating up till it fails. The product has a UL listed label too. (never trust a product based on the UL label, lots of those are fake)On your project I might would add a piezo buzzer as an indicator should the temp go far above an upper limit that exceeds 74, maybe 80F to let you know that things are really not right.I’m doing that with my aquarium. If something with the new digital control fails and it exceeds my limit then the buzzer will sound letting me know something is out of whack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165095",
"author": "James",
"timestamp": "2010-08-03T09:47:35",
"content": "I’m also aware of a number of cases of “approved” wall warts that have no line filter despite the approval requiring it, best case scenario this upsets your router. Worst case…something more critical can’t deal with the noise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165127",
"author": "p0s1tr0n",
"timestamp": "2010-08-03T13:31:11",
"content": "preface: I’m not a doctor, nor do I play one on tvI am the eldest (that’s right, eldest!) of eight so I do have some xp regarding bebes and their/parental needs. the temp sensor is a good idea, although an alarm for da ‘rents should be remote, not next to the young one(s). why not add one of those neato remote mics too (otherwise known as baby monitors), for when lil y’all needs to eat or is bored and wants to see you again? also, the smell sensor idea is genius! i certainly don’t want to lay in my own waste, and not being able to communicate that fact well would really frustrate me, so it occurs to me that having smell-o-vision would really lower the incidence of toddler/teen angst. a humidity sensor is a good idea too, and livin’ down south i can tell you that teh dust mites get particularly busy given certain temp/humidity ratios. and lastly, it is logical that sleeping with one’s parents provides comfort and accessibility, and would help the developing bebe’s nervous system recognize that being in the dark does not equal being abandoned, which I believe is the real cause of “that which must not be named”, no? How long to keep master or mistress child(ren) in bed? i’d say 9 mos….10 IF parent(s)=no sex life, THEN20 GOTO public place for wild sex20 IF coppers arrive bewildered, THEN30 LIST reasons=wild sex, OR40 RUN (j/k)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165128",
"author": "p0s1tr0n",
"timestamp": "2010-08-03T13:32:51",
"content": "great, my five line program has a code error in itso much for my HAD cred",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165289",
"author": "Simon",
"timestamp": "2010-08-03T20:53:50",
"content": "Sam, if a toddler were to stick it’s fingers in a plug socket it would be killed, that doesn’t mean that you should remove all danger from the toddler by taking the plugs away.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.764874
|
||
https://hackaday.com/2010/07/31/xt-ide-controller/
|
XT IDE Controller
|
Mike Szczys
|
[
"News"
] |
[
"dos",
"ide",
"isa",
"ms-dos",
"xt",
"xtide"
] |
[Geordy] wanted to use some IDE devices but he didn’t have an interface card for his XT system, which can’t handle 16-bit IDE. He looked around for 8-bit ISA controllers but they were hard to find and quite expensive. Lucky for him there’s an open source project that makes a solution to this problem.
The XTIDE project
brought together a group of vintage computing enthusiasts to design this ISA card. [Geordy] was even able to order a professional PCB from one of the forum members. He
ordered the parts an soldered it together
, costing about $30 total. He had a friend help him burn the code to the EEPROM but that’s easy enough to do
with an Arduino
,
Bus Pirate
, or one of several other methods. Now his grand plans at installing DOS 6.22 have been realized.
| 35
| 35
|
[
{
"comment_id": "164337",
"author": "MS3FGX",
"timestamp": "2010-07-31T20:32:25",
"content": "So he, uh, put together a kit that he bought online?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164341",
"author": "Brooks",
"timestamp": "2010-07-31T20:40:43",
"content": "I presume that’s why this is filed under “news”, rather than one of the many “hacks” categories.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164344",
"author": "sariel",
"timestamp": "2010-07-31T20:45:43",
"content": "@MS3FGXI think the main point that Mike was trying to get to other than this is a kit, is that you can totally make your own IDE ISA card. I remember when I was just a wee-hacker my first PC was DOS6 with about 6 ISA ports. Had I been able to keep bessie, this totally would have been a bad ass concept to use to show her and some killer soldering skills off. I say kudos to geordy and the entire community for creating such a kit. Especial props go out to the board maker. My only question now is, does it come in colors? :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164346",
"author": "Osgeld",
"timestamp": "2010-07-31T20:56:44",
"content": "Not that I have done it, but IDE is apparently reasonably easy as it is always popping up on retro computer sites usually implemented in software and a hand full of glue (logic)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164348",
"author": "James",
"timestamp": "2010-07-31T20:58:34",
"content": "The “hack” is that modern IDE hard drives are working at all in a 25 year old computer that was designed before IDE was even conceived. The interface card itself was designed by a small group of enthusiasts, plenty of credit goes to them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164349",
"author": "James",
"timestamp": "2010-07-31T21:00:23",
"content": "IDE is easy to talk to, but to get it going as a functional boot/system drive can be a bit of a trick. The real magic here is the BIOS that was written for this card, the hardware itself is very simple.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164360",
"author": "Kevin Lura",
"timestamp": "2010-07-31T22:06:25",
"content": "The software is the hack, the card simply looks great. Most hacks dont look nearly this nice, heck most commercial stuff doesnt look this nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164361",
"author": "Osgeld",
"timestamp": "2010-07-31T22:09:20",
"content": "“The “hack” is that modern IDE hard drives are working at all in a 25 year old computer that was designed before IDE was even conceived. ”eh sorta, hard drives before IDE all did the same thing so its not a new idea, just a open and documented version of it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164367",
"author": "Philippe",
"timestamp": "2010-07-31T22:19:00",
"content": "Not that I like to burst bubbles, but after exactly 12 seconds of googling, I found this link :http://www.computerpartsgalore.com/cards-controller.htmThe third line says:Acculogic\t110-00410 / sIDE IDE Interface Board / ISAOk, it’s 48$, not 30… but you’re making a nice gesture for the planet (and your fellow earthlings) by preventing something that’s probably not exactly ROHS compliant to go in a landfill.Just my two (Canadian) cents.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164383",
"author": "Geordy",
"timestamp": "2010-07-31T23:15:57",
"content": "@Phillippe: That Acculogic card is a 16-bit ISA board so it won’t fit in an XT.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164387",
"author": "Jeff D",
"timestamp": "2010-07-31T23:47:04",
"content": "What, no SATA?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164389",
"author": "nyder",
"timestamp": "2010-08-01T00:02:44",
"content": "The trick to getting the 16bit IDE to work over the 8bit ISA bus, is that the card read’s 16bits from the drive, then only sends 8bits at a time thru the isa bus.It’s a trick i’ve come across for using IDE on other 8bit systems, like the Appple II.But dang, I wish I still have an XT or something similar.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164390",
"author": "Gordo",
"timestamp": "2010-08-01T00:04:07",
"content": "dont know much but 16bits bus is really hard to control with an 8bit mcu ? shift register or some other trick should do I think",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164391",
"author": "steven-x",
"timestamp": "2010-08-01T00:15:21",
"content": "Now I feel dumb selling my XT MB on ebay.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164401",
"author": "Jason Knight",
"timestamp": "2010-08-01T01:19:06",
"content": "Makes me long for the days of heathkit — there are no good board level kits anymore for building an entire PC.XTIDE could just be the start — how about an entire XT you etch and solder yourself from plans?Back in the day I built both a HS-158 and HS-161 — You got the boards, you got the parts, you soldered it all together. The CGA card for the 161 and hercules knockoff for the 158 took a good weekend each all by themselves and I came away from the experience with a lot of knowledge about parts I didn’t normally deal with (like RAMDAC’s).The heathkit x86 based machines were interesting in that they were a passive backplane/card cage, and you put the CPU on an expansion card just like in many servers. I’d love to take on a project like that again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164409",
"author": "GCL",
"timestamp": "2010-08-01T01:56:54",
"content": "Interesting. Very interesting.@ALL:Please remember that the XT disk drive used the beginnings of the ATA interface. The AT’s controller was exactly the device indeed, it was finalized there. The Compaq Deskpro 286 contained an early model IDE drive controller. I should know I repaired a lot of them.Take look inside any XT, the drive controller its wearing has two ribbon cables, one for the data and one for the controller signals to the drive. Perhaps a few extra signals on the fat cable, its been a long while. Anyway IBM worked that into the ISA (PC/AT) style controller that was used there. And Compaq created the IDE standard by compressing them into the forty leaded wonder we know today.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164413",
"author": "Vonskippy",
"timestamp": "2010-08-01T02:44:34",
"content": "Next up, a mechanical butter churn.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164418",
"author": "RBMK",
"timestamp": "2010-08-01T04:18:32",
"content": "We have tons of this stuff here in Czech Republic. Not for 30 dollars, but for 30 crowns, which is one dollar! I have tons of MFM stuff, which is older than IDE. Good source of stepper motors, HUGE magnets and 74xxx chips…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164512",
"author": "Tomasito",
"timestamp": "2010-08-01T13:25:02",
"content": "How do you burn a parallel EEPROM with an arduino or a bus pirate? You will need a lot of shift registers… I think you missed that it is not a serial eeprom…Btw, it’s nice to see some legacy hardware from time to time ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164573",
"author": "Ugly American",
"timestamp": "2010-08-01T19:19:58",
"content": "The early Shugart interface HDs were bare drives. The controller boards had the low level control electronics (MFM or RLL) and had to know everything about the drive. There was no safety checks if you put in the wrong info. If you changed controllers or moved the drive to another machine that was faster or slower it often didn’t work and had to be low level reformatted. These were the days of Spinrite and the nightmare of trying to find identical controllers with the same ROM version on them to recover data from a drive when something failed.IDE was a huge improvement because the low level control circuits were integrated into the drive so drives could be moved from machine to machine and still work. The drives also had block remapping and some sanity checks built in to prevent hardware damage from out of bounds commands which people then figured out could be used for auto configuration.Of course, if you had the money, SCSI had all that and more but had it’s own frustrations from the poorly regulated implementations of it’s bus and terminators. Often devices from different manufacturers would refuse to work together on the same bus or even worse, they would work and then corrupt data sometimes.I have no nostalgia for the old PCs. They were terrible designs even by the standards of the day. Apple, Commodore and Atari had auto configuration hardware going back to the 70s and we were still looking up addresses and changing jumpers on PCs to set addresses and IRQs into the 90s.It’s amusing that the entire industry has now come around to smarter drives with internal block reordering on a serial bus like the old Vic20, C64 & C128 used. The implementation on the C128 worked quite well but the C64 had a hardware bug that was never fixed leading to years of frustratingly slow access and an endless parade of software hacks to speed it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164625",
"author": "D_",
"timestamp": "2010-08-02T00:53:45",
"content": "Now if HaD would find me a way to use a SD card a like a HD in my old Grid laptop that has no HD, just a 720K floppy drive. Every time I boot up that old monster, I think it finally died, until I remember how slow they are. I need to find some more floppy disks so I can get more usable DOS programs set up for it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164684",
"author": "Geordy",
"timestamp": "2010-08-02T06:34:11",
"content": "@D_: That shouldn’t be terribly hard if your Grid has an IDE controller in it already for an optional hard drive. If not, you could still do something by finding the right ISA pins and adding an IDE controller perhaps. I would suggest a compact flash card instead of SD though since a CF card uses an ATA/IDE interface already.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164706",
"author": "telefisk",
"timestamp": "2010-08-02T08:51:58",
"content": "Many 16bit isa I/O cards with serial, parallel and ide do work in a 8bit isa slot, same goes for the video cards. So he might just have beenunlucky with those he had access to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164833",
"author": "Mark H",
"timestamp": "2010-08-02T16:18:56",
"content": "Those into older hardware might be interested to know that someone still makes new motherboards with ISA support.http://www.adek.com/ATX-motherboards.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164898",
"author": "Jake",
"timestamp": "2010-08-02T18:45:19",
"content": "Lol, I started with MS-DOS 3.10 on an XT machine in about 1986. I learned BASIC on a TRS-80 when I was 8 ;)This is interesting, but there are still plenty of old XT cards out there to be had, look on eBay – I recently bought an 8-bit MFM/RLL card for about 10 bucks. Even the MFM drives themselves are still pretty cheap and available.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165075",
"author": "überRegenbogen",
"timestamp": "2010-08-03T07:34:54",
"content": "And now to annoy people by pointing out a couple of geeky nomenclature details:An ATA interface is not a disk controller. The controller is on the drive—hence Western Digital calling it IDE (Integrated Drive Electronics), to distinguish it from the older ST-507 and ST-412 systems in which the disk controller was on the card and the drive just had the servo and head electronics.8-bit ISA is equally a misnomer. XT slots are pre ISA. Only the 16-bit AT bus was ever known, officially, as ISA.:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165125",
"author": "craig g.",
"timestamp": "2010-08-03T13:27:44",
"content": ">This is interesting, but there are still plenty of old XT cards out there to be had…right, and none of them are IDE, certainly not 8 bit, and most certainly don’t support drives bigger than 1/2 a Gig, and absolutely not for less than $40. This project fits a gap between needing reliable storage and using it on old machines.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165171",
"author": "Maverick",
"timestamp": "2010-08-03T15:45:04",
"content": "@AllThis isn’t *just* an IDE interface that was made. It’s an IDE interface that allows *MODERN* IDE hard drives to be easily used in Vintage machines. Try using an IDE interface card (like the $48 card on Acculogic) to run a 100gig drive. It ain’t gonna happen. With XT-IDE, you CAN. And you can put it in your IBM XT, your Tandy 1000, or anything else with an available ISA slot. Heck, we’ve even had forum members successfully put the BIOS from the XT-IDE into an available slot on their 3Com Etherlink III network cards, and use that to boot modern hard drives from the on-board IDE interfaces in their 286/386/486 motherboards, bypassing the antiquated logic of the motherboard’s IDE Controller.That’s the trick, and the “wow” factor with this product.Research before you bash.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168011",
"author": "James",
"timestamp": "2010-08-12T22:39:26",
"content": "The XT is based on an Intel 8088. This is a 16 bit CPU, but the external bus and expansion slots are 8 bit. While *some* 16 bit ISA cards will work in an 8 bit slot, IDE adapters will not. IDE was designed to be very similar to the 16 bit AT (ISA) bus that had recently come on the scene, and as such ISA IDE “controllers” are rather simple devices with little or no onboard intelligence. Drive configuration is handled in the system BIOS which on a PC/XT has no such concept.Interfacing an IDE device, especially a modern one to a PC with 8 bit slots is not trivial. If you look at the design of the XT-IDE circuit, it loads 16 bits into a latch and then feeds them to the bus sequentially. Additionally, it also interfaces the BIOS EEPROM containing the firmware that makes it all happen. The BIOS on the motherboard was designed for floppy drives and hard drive controllers needed their own BIOS to work.There have been commercial 8 bit IDE cards but they are exceptionally rare. I have seen 2 or 3 of them in the decades I have been playing with computers and on ebay every one of them has fetched $150+. Not only that, these were ancient cards unable to work properly with many modern drives. I second the above post, research before jumping to conclusions. The PC/XT was the primitive rough draft of the modern PC. When the AT came out a few years later it was far more refined and more closely resembled a modern PC. One can also occasionally find working MFM or RLL drives and controllers, but the newest of them are decades old, they are noisy, slow, power hungry, notoriously difficult to get going, and it is difficult if not impossible to connect one to a modern PC in order to transfer software to it.I wouldn’t expect younger folks to have much interest in such primitive hardware, but the very first computer my family owned was an original IBM PC and I owe much of my current PC hardware and software knowledge to the *many* hours I spent twiddling with jumpers and dip switches, fighting IRQ, DMA, and address conflicts. Messing with drivers to get hardware working, twiddling with memory in order to free up that last 2K needed to make a certain game run, and so on. Do I want to return to those days? Hell no, but once in a while I still enjoy a little nostalgia.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168659",
"author": "überRegenbogen",
"timestamp": "2010-08-14T21:31:23",
"content": "Ugh. Another nomenclature error run amok to throw a rock at:MFM (modified frequency modulation) and RLL (run length limited) are not interfaces; they are encoding methods. They are not commensurate terms with [P]ATA (aka IDE). Indeed, ATA drives can be MFM, RLL, or any other sort of encoding (it could be a monk with a quill and paper, for all the interface cares); but it’s for the drive’s inbuilt controller to worry about—not the ATA interface. That’s one of various pesky details that SCSI and ATA got out of our hair. [And yes, the proper generic name for IDE (which was a Western Digital trademark) is ATA or PATA (the specifically parallel version of the term to distinguish it from SATA).]The interfaces commonly associated with MFM and RLL hard drives are ST-412 and ST-507 (the latter being the basis of ESDI). (These actually were controllers—directly controlling the platter and head servos, and sending signals to the heads—which ATA and SCSI interfaces are not.)The XT BIOS was extensible and configurable. Hard drive interfaces did have firmware on them, which was configurable via jumpers or DIP-switches, or utilities run from disk, until inbuilt configuration facilities came about (which was after the earliest AT machines).[Meanwhile, users of non-IBMoid platforms didn’t have to screw with all that backassward manual intervention crap that IBM—by sheer brand momentum—had inflicted upon the world of personal computers.]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "331023",
"author": "Dark_Rein",
"timestamp": "2011-02-12T06:42:42",
"content": "most 8 bit xt system with hard drive cards were MFM Drives like the 10 and the 20 mb hard drives that were so large we would never fill(LOL).MFM is the same protocal as the floppy drives the I/O sytem allowed it to use the drive as a larger space. Apple to some point used them into the 80’s im not sure if they have ever changed but MFM drive I/O was why PC and Mac drives were not so compatable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "338670",
"author": "überRegenbogen",
"timestamp": "2011-02-21T12:53:29",
"content": "Again, MFM is not a protocol. (See above.) The protocol between the controller and the drive is a combination of head servo control signals, head selection control signals, and the data signal. While similar in nature, the signalling systems for a hard drive and a floppy drive are not interchangable.ATA, like SCSI, is an integrated drive electronics arrangement (hence WD’s IDE branding), meaning that the controller is part of the drive assembly itself. The interface hardware at the host end is no longer a controller, but a higher lever beast, that speaks a protocol of data blocks and locations, rather than head positions and bit streams. (People just keep calling it a controller out of habit, or not knowing any better.)Apple double density floppies (of either size) use GCR (group code recording) encoding, which IBMoid floppy drives don’t do. Come high density, in the late ’80s, they adopted the same MFM encoding as MS-DOS HD microfloppies, to allow intercompatiblity (at the expense of a little capacity).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "566681",
"author": "Alex",
"timestamp": "2012-01-24T23:41:16",
"content": "Thats all good but does anyone know where I can find an XT 8 bit ID card? The old harley clutch drives are crap and when I buy them they dont boot. I can access them, spinrite them but still, no boot. Im wanting to get my old IDE drives onto my Tandy 1000. For some reason the kids are turned onto 8 bit games these days.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "581378",
"author": "Maverick",
"timestamp": "2012-02-12T23:17:31",
"content": "Alex, You didn’t read the initial post here, did you? :) Go visithttp://www.vintage-computer.com, then PM Andrew Lynch to see about getting an XT-IDE v2 PCB (roughly $15 shipped). Then about $25-30 in parts later, you’ll have yourself everything you need to solder this together.Note that v2 of this card adds a fix found by Chuck Guzis of Sydex that speeds up the disk access immensely (not that it was that slow to begin with – certainly faster than anything we had back in the 8088/80286 days). It also adds an on-board power molex connector, allowing for easier use in Tandy models and IBM 8525/8530 models (or adapting for hardcard usage).Also note that there are some other concurrent projects paralleling the work done on the original XT-IDE. See the forum for more details.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1762896",
"author": "kasinath",
"timestamp": "2014-08-29T02:29:05",
"content": "How about designing a SATA controller for HDD",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.044609
|
||
https://hackaday.com/2010/07/31/defcon-18-official-badges/
|
DefCon 18 Official Badges
|
Mike Szczys
|
[
"cons"
] |
[
"badge",
"defcon",
"epic",
"joe grand",
"official"
] |
The details are out for the
DefCon 18 badges
. The new design has a lot of goodies packed into it, most notably a 128×32 LCD display. You can’t see it in the image above because it’s on the other side of the badge; the ribbon cable passes through a slit in the substrate to reach the connector on the back. The board has a mini-USB connector and is meant to get even the unseasoned novice up and running with some firmware tweaks. The Freescale processor (which is the same chip as
last year’s badge
) is running a bootloader that can be accessed and flashed using a terminal program. Yeah… impressive.
But it doesn’t stop with the component selection or firmware mastery, these badges are beautiful too. What you see above is the prototype, but the 7780 badges produced come in seven different flavors (as usual), laser etched on a PCB that uses Aluminum as the substrate. Line up all the badges side-to-side and you get a graphic art storyboard. [Joe] outdid himself this year, and he’s been nice enough to share the development details (
PDF
) which we spent way too much time drooling over.
[Thanks Kim]
| 18
| 17
|
[
{
"comment_id": "164238",
"author": "Landon",
"timestamp": "2010-07-31T16:12:26",
"content": "looks beautiful, i wonder what the picture is gonna be with them all lined up together.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164241",
"author": "ahmad",
"timestamp": "2010-07-31T16:20:15",
"content": "DO WANT",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164246",
"author": "Digital",
"timestamp": "2010-07-31T16:45:37",
"content": "the picture will probably be the goatse guy",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "164254",
"author": "Mike Szczys",
"timestamp": "2010-07-31T16:57:01",
"content": "It’s not like they’re keeping this stuff secret. There’sa picture of the etched boardsin that PDF I linked to.",
"parent_id": "164246",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164310",
"author": "Spork",
"timestamp": "2010-07-31T19:03:14",
"content": "Really bummed I missed it this year, DEFCON is the best convention ever. The badges are just one of the many things I’ll be without this year.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164319",
"author": "Addidis",
"timestamp": "2010-07-31T19:46:27",
"content": "Also drooling over these. But never been lucky enough to make it to any conventions… Looks like a nice little dev board.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164340",
"author": "prodigy",
"timestamp": "2010-07-31T20:40:29",
"content": "These look very cool. I wish I could attend! I have never been able to attend a convention either.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164351",
"author": "M4CGYV3R",
"timestamp": "2010-07-31T21:06:31",
"content": "First link is down. Can’t see anything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164394",
"author": "Greenbelly",
"timestamp": "2010-08-01T00:28:53",
"content": "I need a freaking Ninja badge. They’re soooo kooooool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164403",
"author": "M4CGYV3R",
"timestamp": "2010-08-01T01:22:24",
"content": "Loaded now. Looks like the only real neat secret thing in the default badge this year is the Ninja unlock that you already covered.An interesting point about this is that to validate all you need to do is set your ‘tumblers’ (ie, bits in a 24-bit int) such that the following check returns true:uint16_t a = (uint16_t)(val & 0xfff);uint16_t b = (uint16_t)(val >> 12);if((a ^ b) == 0x916) //returns if badge validAll in all not nearly as interesting as the secret website from last year, but I have yet to review all the disassembly for secret goodies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164405",
"author": "M4CGYV3R",
"timestamp": "2010-08-01T01:34:22",
"content": "Spoke too soon. Found this encoded url in the ASM files as a giant block of binary. Still trying to figure out the cypher.jjj.unpxrearjf.pbz/qrspbaonqtr.ugzy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164407",
"author": "M4CGYV3R",
"timestamp": "2010-08-01T01:36:55",
"content": "**SPOILER**Ceasar Shift Cipher, Shifted 13 places, decoded URL is:http://www.hackernews.com/defconbadge.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164435",
"author": "Drone",
"timestamp": "2010-08-01T07:36:42",
"content": "Where’s the Arduino?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164510",
"author": "blue carbuncle",
"timestamp": "2010-08-01T13:16:27",
"content": "@M4CGYV3R nice work man :) That was fast :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164514",
"author": "Scott",
"timestamp": "2010-08-01T13:45:28",
"content": "lol @Drone – what irony",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164736",
"author": "saimhe",
"timestamp": "2010-08-02T10:18:46",
"content": "@M4CGYV3RBetter known as “ROT13”. Even Outlook Express has a decoder, however I couldn’t apply it without a working NNTP server.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165241",
"author": "wutbadge",
"timestamp": "2010-08-03T18:55:25",
"content": "Hey Joe, how about you actually make enough badges for once year? $140 for laminated paper? No lanyard? No Thanks defcon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166615",
"author": "bootdisc",
"timestamp": "2010-08-07T22:27:54",
"content": "Defcon 18 was one of the better con’s I have attended. The badges were in vary short supply and only people who showed early Thursday got one. Rest of us got these shit paper badges. Defcon 19 will be at the rio so that’ll be a big improvement.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.280306
|
||
https://hackaday.com/2010/07/30/scoreboard-from-scratch/
|
Scoreboard From Scratch
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"atmega328",
"iphone",
"pcb",
"scoreboard",
"wifi",
"wifly"
] |
[Kenneth] built this
scoreboard for use at a ballpark
that lacks such luxuries. We think this a phenomenal application for his skill and his pocketbook. He laid out PCBs for each digit in Eagle and etched them himself, then installed the indicators for home score, visitor score, inning, balls, strikes, and outs in a laser cut case. A pretty beefy battery along with the folding stand make this quite portable.
In the demo video after the break he’s connected to the scoreboard via telnet to update the score. This trick is accomplished using
SparkFun’s WiFly GSX
breakout board to set up an adhoc wireless network. The goal is to write an iPhone app that will be used to control the board in the field (or the outfield as it were).
This could definitely be
used for different types of scoring during the off season
.
[youtube=http://www.youtube.com/watch?v=Ccw5WhbPVZ4]
| 22
| 21
|
[
{
"comment_id": "163917",
"author": "vonskippy",
"timestamp": "2010-07-30T20:31:25",
"content": "Too bad no actual photo’s of the thing in use – outdoors – in the sun – from 50 feet away.Looks way too small to score anything but a ping pong match.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163928",
"author": "Hirudinea",
"timestamp": "2010-07-30T20:43:07",
"content": "Does it play that “Charge” song?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163932",
"author": "Mike",
"timestamp": "2010-07-30T20:49:20",
"content": "I think this is neat. Like vonskippy states, how well does it operate in the sun? As far as size goes it doesn’t have to go in the outfield, could be place by one of the dugouts.I would be interested in making one. Until an app is made I know Android has a telnet app and I am sure the Iphone does and that could be used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163943",
"author": "Fresh",
"timestamp": "2010-07-30T21:15:05",
"content": "That would be perfect for Hardcourt Bike polo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163950",
"author": "Erik Johnson",
"timestamp": "2010-07-30T21:28:32",
"content": "Now make it spin violently so it has a 360deg viewing angle!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163954",
"author": "osgeld",
"timestamp": "2010-07-30T21:46:33",
"content": "well depends on the situation, if this is kids thing and its going to be ziptied to the fence so the parents can keep track of, its probably more than fineif its going to the local high school baseball feild, then you may have the issues mentioned above",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163984",
"author": "bobdole",
"timestamp": "2010-07-30T22:53:35",
"content": "Mike… English isn’t your native language, is it?“[Kenneth] built this scoreboard for use at a ballpark that lacks such luxuries.”Which such luxuries? That maxes no sense. The word “such” is referring to something specific in the previous sentence. There is no previous sentence.You do this all the time. Almost every single one of your articles has glaring grammatical errors. Please take an English course. I hate to be so picky, but when I have to read something four times to understand what you’re trying to say, it really takes away from the article. This has been an ongoing complaint every single time I visit this site, I just usually hold my tongue about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163988",
"author": "kernelcode",
"timestamp": "2010-07-30T23:10:58",
"content": "@bobdole: The ball park lacks the luxury of a scoreboard. Seems fairly straightforward to me, but then English is my native language.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "164037",
"author": "Hip",
"timestamp": "2010-07-31T00:41:45",
"content": "I second that good chap! Jolly good show!",
"parent_id": "163988",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "164026",
"author": "Lord Sutch",
"timestamp": "2010-07-30T23:51:42",
"content": "Your article is fine. If you need to read it four times to “get it”, you may have problems of your own. Btw Nice Scoreboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164035",
"author": "Hip",
"timestamp": "2010-07-31T00:40:10",
"content": "@bobdole – didn,t you no that such thingos are not of a worry four all of us’? Yourre commment is unwelkome; and rudeness. Apologuys then!!! Dick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164042",
"author": "error404",
"timestamp": "2010-07-31T01:06:36",
"content": "@bobdole: The quoted sentence is fine. English isn’t your native language, is it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164051",
"author": "Hitek146",
"timestamp": "2010-07-31T01:47:54",
"content": "“Looks way too small to score anything but a ping pong match.”LOL… I was going to do something similar to this for my hometown ball teams, but using a much larger 10 x 80(or so)LED matrix display. Thankfully, before I could start, the school got sponsored for a new RGB display. Sweet! I particularly like the idea of the iPhone front end…You editors have been doing a wonderful job lately with the addiditonal posts. I think that most of the people that were reluctant to see more posts were worried about the fact that the editors were already struggling to gather hack-worthy posts as it was, and that any new posts would be inferior, since they apparently couldn’t be found before. I am glad that we were wrong. Keep up the good work!also, LOL @ Hip… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164054",
"author": "Hitek146",
"timestamp": "2010-07-31T01:57:49",
"content": "-addiditonal+additional:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164067",
"author": "Chris",
"timestamp": "2010-07-31T02:38:59",
"content": "@bobdole: its fairly simple to infer what he meant. If he was writing a technical paper or a book then yes it may need to be changed, but for a blog site like this its just fine. stop being a grammar nazi.also “That maxes no sense” whats up with this? k and x are nowhere near each other lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164069",
"author": "bobdole",
"timestamp": "2010-07-31T02:46:36",
"content": "Okay, I’ll eat my hat. Sorry Mike, I guess I didn’t have enough coffee this morning. My bad. Upon re-reading that sentence it does indeed make sense. I was just venting my previous frustrations with your grammar in the past.@chris: yes, actually, k and x are right next to each other on a dvorak keyboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164078",
"author": "David",
"timestamp": "2010-07-31T03:36:04",
"content": "Worst case scenario i’m sure this would scale pretty easily with an upgrade to the power supply.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164102",
"author": "Spork",
"timestamp": "2010-07-31T05:27:07",
"content": "Firstly, this is an amazing project. I seriously want to get out the etching solution and start making my own scoreboard. I really have no use for one, this project is just that inspiring to me. Great job, very professional look. I am quite impressed.As for HaD,@bobdoleWow, I was ready to point and laugh like everyone else, but the apology and the fact that you use a dvorak layout as well just scored you points.@MikeI think it made perfect sense. The luxuries are that of a scoreboard and implied anything else pricey that the field may be lacking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164104",
"author": "Osgeld",
"timestamp": "2010-07-31T05:45:17",
"content": "good form bob",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164188",
"author": "strider_mt2k",
"timestamp": "2010-07-31T12:22:51",
"content": "Indeed, good form!!Civility FTW!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164214",
"author": "Kyle, also",
"timestamp": "2010-07-31T14:46:19",
"content": "@bobdole, The story is clear and concise, it conveys the appropriate information summarily and attributes the work correctly. AS almost all HaD submissions do.Such:–adjective1.of the kind, character, degree, extent, etc., of that or those indicated or implied.He implied prior to using the word that ‘such’ was in fact a scoreboard. It does not need to be in a previous sentence however the first sentence could really be two. You say you read it 4 times before it made sense and then in your apology say when you read it a second time it made sense? Which is it 4 times before you started your tyraid or was it just once and as soon as you found a flaw you let mike have it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164396",
"author": "Hoopstar",
"timestamp": "2010-08-01T00:43:50",
"content": "talk about re-inventing the wheel..http://www.siliconchip.com.au/cms/A_103978/article.html",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.482818
|
||
https://hackaday.com/2010/07/30/building-a-better-water-rocket-launchpad/
|
Building A Better Water Rocket Launchpad
|
Mike Szczys
|
[
"Toy Hacks"
] |
[
"2-liter",
"bottle",
"launcher",
"pressurized",
"PVC",
"water rocket"
] |
School will be starting again in a few weeks but it’s not too late to enjoy a little time with your kids. This
water rocket launcher
lets you do just that. Built using the frame from an old grill, a soda bottle takes its place on the upturned PVC pipe. There’s a connection for your garden hose that allows you to inject water into the bottle. From there, a compressor connection pressurizes the bottle in preparation for launch. Watch it happen in the video after the break. That bottle could use some fins and a nose cone but there’s no denying the delight the kids are enjoying when they chase after the downed craft.
If you’ve already got a compressor and some empty 2-liter bottles you might also pick up some extra PVC to make this
pressurized water cannon
.
| 13
| 13
|
[
{
"comment_id": "163891",
"author": "sojcny",
"timestamp": "2010-07-30T19:24:48",
"content": "“not to let to enjoy” -> not too late to enjoy and there is no video after the break.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163902",
"author": "Steve",
"timestamp": "2010-07-30T19:53:50",
"content": "Good job setting it off so close to the kids. Even better it almost smacked him in the head.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163903",
"author": "deathventure",
"timestamp": "2010-07-30T20:01:37",
"content": "There is such a thing as too much safety. I would prefer the kids learn the hard way cause they learn it faster. Kids now don’t have any sense and I think that’s part of the problem. Eventually all playgrounds will be covered in fluffy white pillows.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163904",
"author": "Mike Szczys",
"timestamp": "2010-07-30T20:07:16",
"content": "Yep, I’d probably use a rope and let the kids do the launching… but I’m sure he’ll make some refinements over time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163918",
"author": "Hirudinea",
"timestamp": "2010-07-30T20:32:04",
"content": "WE MUST NOT ALLOW THIS TECHNOLOGY INTO THE HANDS OF TERRORISTS!!!! Nah, but really its nice but he should have put up some launch rails to help control the rockets trajectory.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163941",
"author": "mark",
"timestamp": "2010-07-30T21:12:07",
"content": "http://www.aircommandrockets.com/I love these guys. I’ve been following their progress for over a year and they definitely have made the coolest water rockets I’ve ever seen. They have single- and multi-nozzle water rocket launchers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163944",
"author": "PolyJetter",
"timestamp": "2010-07-30T21:18:03",
"content": "I seem to recall something about not using PVC with compressed air… something about shards of sharp PVC if it bursts or has any kind of impact (which causes it to burst)?Not really much PVC in this build though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163963",
"author": "tomas316",
"timestamp": "2010-07-30T22:09:05",
"content": "I just cut a hole in the 2 liter lid and cut the valve out of a bike tube and poked it through, went down to the co-op and filled it with water/air and twisted the cap off and watched it take off! I suffered no injuries as a result of a hot summers day of fun!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164031",
"author": "Jak_o_Shadows",
"timestamp": "2010-07-31T00:21:12",
"content": "System seems pretty good. Thing is, it gets kinda hard to do if you don’t have an air compressor and have to pressurize it by hand.Actually, the best (simplest and effective) fin system i’ve found is cutting the flat circular middle section out of another bottle, using straws/skewers/coat-hanger wire to attach it below the bottle, in line with it. I found about 30cm good. Duct tape it all up (pro tip: Don’t use masking tape). It goes up straight, comes down fairly straight. Recovers fairly well from bad launching angles as well.Pity his system can’t accommodate this, but still a good job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164261",
"author": "tim",
"timestamp": "2010-07-31T17:19:33",
"content": "ok, now where is your God ?http://www.aircommandrockets.com/images/day78/Day78_02_s.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164567",
"author": "The DON",
"timestamp": "2010-08-01T19:00:23",
"content": "Like thomas316, I drilled a hole in the cap of ‘pop’ bottles, and used a bicycle/car tyre pump which had a pressure guage built in.The interesting point I found was that at 120 psi, the rocket expelled all the water too quickly and didn’t go as far as when the pressure was 40 psi.Unfortunately, I couldn’t control the release pressure as the bottles would release themselves due to the pressure.Lots of fun though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164812",
"author": "Buzzkill",
"timestamp": "2010-08-02T15:16:52",
"content": "A couple things. Make sure you only use carbonated water bottles. Regular bottled water bottles will explode under very little pressure. They do send shrapnel and are vey loud.The internal seal design launchers work better as the length of the neck of the bottle varies from bottle type to bottle type which requires frequent adjustment if you are using a bottom seal like the launcher here uses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "213641",
"author": "Rick Autry",
"timestamp": "2010-11-17T02:19:19",
"content": "Sorry,(to your intended YOUNG audience for this hack), but REAL MEN MAKE FIRE!Applause to your well thought out design work,but Looks Like A REAL Rocket Extinguisher To Me.’Cmon folks,if you want to get to the planets, you gotta BURN Stuff. Hey, sofar, Issac reigns supreme. HEY,You, AMAZE ME!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,401.972517
|
||
https://hackaday.com/2010/07/30/elegant-wearable-computer/
|
Elegant Wearable Computer
|
Jakob Griffith
|
[
"Wearable Hacks"
] |
[
"aa",
"angstrom",
"battery",
"beagleboard",
"computer",
"display",
"linux",
"myvu",
"sun glasses",
"wearable"
] |
[Jason Statham]
[Martin Magnusson] wrote in to tell us about his adventure in
building a wearable computer
. The device in its current state is a
Beagleboard
running Angstrom Linux tethered to an iPhone for internet. A bluetooth keyboard allows for input, while output is displayed on
monocle-ized Myvu
. And last but not least, the entire setup is powered by 4 AA batteries for 3 hours of life.
Its not as small as some of the wearable computers
we’ve seen before
, but if you wanted to whip out your own it sure takes a lot less soldering.
| 50
| 50
|
[
{
"comment_id": "163862",
"author": "Vonskippy",
"timestamp": "2010-07-30T18:15:40",
"content": "Do you actually know what the word “elegant” means?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163867",
"author": "Erik Johnson",
"timestamp": "2010-07-30T18:39:53",
"content": "@Vonskippy I know it doesn’t mean having an obvious protrusion on your face obstructing your vision.Other than that misrepresentation, I like how he powers it through the USB hub first, then the board and periph.’s just draw from there",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163873",
"author": "kirov",
"timestamp": "2010-07-30T19:03:58",
"content": "and then you go blind by age 30",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163906",
"author": "xorpunk",
"timestamp": "2010-07-30T20:10:30",
"content": "@kirov: I don’t think they researched why this display technology failed in the 90s ^^. It just looks cool. He’s suppose to be a wealthy A.I. researcher according to his blog..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163914",
"author": "Mikey",
"timestamp": "2010-07-30T20:29:57",
"content": "I agree with @Vonskippy, this looks anything BUT elegant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163915",
"author": "Ferdinand",
"timestamp": "2010-07-30T20:30:14",
"content": "Nice setup so far, but a diode in series with the battery? You have to be kidding me. At least buy a MintyBoost – or, even better, build a switchmode power supply yourself. It’s not that hard, try a MC34063 for instance.-Ferdinand",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163916",
"author": "Mikey",
"timestamp": "2010-07-30T20:30:36",
"content": "@Vonskippy, I agree this looks anything BUT elegant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163921",
"author": "Mikey",
"timestamp": "2010-07-30T20:36:42",
"content": "Dunno why my comments are getting eaten, but for the last time:“@Vonskippy, I totally agree, this is anything BUT elegant.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163922",
"author": "Jody",
"timestamp": "2010-07-30T20:37:19",
"content": "Inigo Montoya: You keep using that word. I do not think it means what you think it means.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163924",
"author": "xeracy",
"timestamp": "2010-07-30T20:40:52",
"content": "I took apart a pair of videoglasses i got on woot and there is a board between the two lensed video screens. it is easy enough to dis connect, but i dont see where he would have stashed that bit of hardware in the monacle…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163925",
"author": "Arrangemonk",
"timestamp": "2010-07-30T20:41:14",
"content": "since iphone jailbreaking is legal, why not make an ap to use the iphone as keyboard /input too?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163937",
"author": "Alex",
"timestamp": "2010-07-30T21:03:04",
"content": "Electronic birth control…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163938",
"author": "ChalkBored",
"timestamp": "2010-07-30T21:07:43",
"content": "Or use the phone for everything, and not have to carry a purse around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163964",
"author": "jsngrimm",
"timestamp": "2010-07-30T22:12:05",
"content": "ok, its not that elegant looking, but you can run Ubuntu from sd card on those beagleboards! full wearable desktop pc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163969",
"author": "steeve",
"timestamp": "2010-07-30T22:25:29",
"content": "This dude will so not get laid… But he can watch pr0n from the internetz on his goggles",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163977",
"author": "Squirrel",
"timestamp": "2010-07-30T22:37:29",
"content": "@vonskippy – elegance – a quality of neatness and ingenious simplicity in the solution of a problemSo elegant looking? NoElegant design? I’d say yes (especially like what Erik J said about it being powered solely through the USB hub)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163992",
"author": "D_",
"timestamp": "2010-07-30T23:23:03",
"content": "The best I learned from this article is the existence of the beagleboard, this is the first I seen of it. I need to investigate it a bit further yet. At first glance it would seem to be better to put that $150 towards a netbook, for my desires.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164023",
"author": "zool",
"timestamp": "2010-07-30T23:42:55",
"content": "why does that guy look pissed off?maybe he was reading the comments on HAD :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164028",
"author": "xeracy",
"timestamp": "2010-07-30T23:58:42",
"content": "@Arrangemonk & ChalkBored: “I’m trying to replace the iPhone with a general purpose computer. After some research I discovered the beagleboard”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164032",
"author": "zerth",
"timestamp": "2010-07-31T00:30:10",
"content": "@D_Definitely look at the new MX version of the beagleboard: double the MIPs and quadruple the RAM for just $30 more.But definitely consider how you would be using it. A netbook already has a battery, charging system, input and display done. The beagle is just the base.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164033",
"author": "McAWK",
"timestamp": "2010-07-31T00:32:13",
"content": "(Lol at everyone’s reaction to ‘elegant’),http://farm1.static.flickr.com/66/176217092_d892efbdf9.jpgoooooooh, how far we have fallen!Granted this is just a test/mockup thing at this stage, but I think it is pretty neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164045",
"author": "john",
"timestamp": "2010-07-31T01:19:10",
"content": "borg fail",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164093",
"author": "Alex",
"timestamp": "2010-07-31T04:34:30",
"content": "Not one mention of being a gargoyle?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164130",
"author": "Gilbert Wham",
"timestamp": "2010-07-31T07:42:44",
"content": "@alex: They don’t know what you mean. Anyway, if he was, his shirt would be magnolia like the wall…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164138",
"author": "roswellaliens",
"timestamp": "2010-07-31T08:29:53",
"content": "maybe encase the myvu display module in black powder paint-doped shapelock? would look a lot neater and prevent any damage to the fragile connectors as well as being removable if something does go wrong.on the flip side, has anyone managed to drive one of these displays from a micro yet? i had a look a little while back and to get it to initialise isn’t too hard (record and play back the init signals) then just drive it with the appropriate RGB+sync digital signals.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164144",
"author": "bothersaidpooh",
"timestamp": "2010-07-31T08:43:30",
"content": "interestingly the aspire one aoa150 motherboards frequently break with BIOS and/or power connector problems, both of which can easily be fixed.The video out port can be “kludged” using a 2404 e2prom soldered to the relevant pins on the back of the VGA connector so the output is “always on”.to obtain the code find a broken lcd monitor with one of these and salvage the chip then copy code onto spare chip(s) from old motherboards or graphics cards.rumour has it that you can simulate TV-Out on the A1 by hacking the description code in this chip to specify a compatible sync range.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164174",
"author": "turn.self.off",
"timestamp": "2010-07-31T11:20:19",
"content": "i could have sworn i recently read about either vuzix or myvu presenting a product that allowed one to look away from the screen without taking the glasses of entirely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164190",
"author": "strider_mt2k",
"timestamp": "2010-07-31T12:29:33",
"content": "So, uh…what do you use it for, other that looking like someone who is in need of human companionship?Is it for finding human companionship?-because if you lose the hardware and the sour puss you might get somewhere with that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164215",
"author": "Pouncer",
"timestamp": "2010-07-31T14:50:00",
"content": "I want to be able to promote/vote Alex’s comment!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164258",
"author": "Patrick",
"timestamp": "2010-07-31T17:16:21",
"content": "To everyone hating on the eye-piece: What would you suggest? A big harness around your shoulders that holds a flat panel in front of your head?El-e-gant -(adj.): gracefully concise and simpleLooks more graceful and simple than any other design I’ve seen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164270",
"author": "mowcius",
"timestamp": "2010-07-31T18:09:01",
"content": "Well I dunno what site everyone else thinks they are on but I love this!This is just the kind of thing I like to see appear in my RSS feed :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164338",
"author": "Greycode",
"timestamp": "2010-07-31T20:38:22",
"content": "I got to go with strider_mt2k on this, the mad scientist runway model look is kind of “ghey.” He has a picture of him without the hardware and in the exact same pose. Almost kind of looks like the henchman to “Le Chiffre.”And to what I would suggest would be a full blown Myvu, or whatever company that you would like the style of the current glasses. They have managed to hide the monitor a little bit better. At the very least, go for symmetry and put one on the other side, even if it is a dummy. That will slightly minimize the “Evil mad runway model scientist henchman with a monocle” look. Because that look is going to get you killed by Bond even if you are not a henchman. Probably because Bond is going to assume that anyone who looks like that is up to no good anyways.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164362",
"author": "steeve",
"timestamp": "2010-07-31T22:09:28",
"content": "Vote for him!http://cheezburger.com/View/3815631104",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164388",
"author": "ali1234",
"timestamp": "2010-07-31T23:50:59",
"content": "@bothersaidpooh it’s true that the AAO can output a PAL signal on the VGA port but it is still RGB and not composite – unless you have a TV with SCART on it. You need to hack the driver to reduce the minimum pixel clock and use a custom X modeline and an adapter cable like this:http://www.nexusuk.org/projects/vga2scart/This trick can be done with most video cards available today since they are all generic enough to produce all kinds of whacky out-of-spec signals.Also I think the guy looks more like John Malkovich.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164399",
"author": "Vonskippy",
"timestamp": "2010-08-01T01:05:10",
"content": "I think he should grow one of those teeny tiny goatees – that would rock his evil henchman look.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164449",
"author": "Erik J",
"timestamp": "2010-08-01T09:55:35",
"content": "You are all narrow minded he will RUULE THE WORLD. Seriously those are cool glasses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164524",
"author": "steeve",
"timestamp": "2010-08-01T15:07:09",
"content": "Yep, definetly cool. I mean at least if you also like to wear pink stockings…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164563",
"author": "hunnter",
"timestamp": "2010-08-01T18:39:28",
"content": "What i would prefer to see is the eyepiece on the inside of the eye so as not to obstruct the lower-right section of my eyesight.But considering the size of the eyepiece, it might not be that possible really, or allow for that much of a visibility increase.Other than that, pretty damn good.Especially the running times.With a buffer and the batteries being made in to packs, you could make 2 battery packs and just swap them for roughly 6 hours on the go without powering down. (or more if you spend a lot of time out)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164868",
"author": "OjM",
"timestamp": "2010-08-02T17:28:21",
"content": "I made a similar set a year ago. It even has the plexi on beagleboard. Also mine has the display inside the sunglasses to look less like a borg.See my articles (blog) here:http://www.linux.com/community/profile?userid=669",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164930",
"author": "OjM",
"timestamp": "2010-08-02T20:00:29",
"content": "Meh, this works better as a blog page than my profile page. Linux.com is still a bit hard to navigate…http://www.linux.com/community/blogs/blogger/OjM/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164935",
"author": "OjM",
"timestamp": "2010-08-02T20:15:19",
"content": "“And to what I would suggest would be a full blown Myvu, or whatever company that you would like the style of the current glasses.”As a wearable computer, monocular is the only way to go. Wanna get hit by a car? Also, I tried the thing before breaking it. It’s darn heavy and sucks in so many ways… I only bought it because of the displays were cheaper to pry from it, than it would have been to buy the display from manufacturer.PS. I shaved my goatee today.“They have managed to hide the monitor a little bit better.”Have you SEEN the Myvu Crystal? I’d rather go out with display like this than the Crystal… Really, it’s only intended as something to watch your movies from when you are on the plane or something, it’s NOT good to use when you are walking, running, working…“At the very least, go for symmetry and put one on the other side, even if it is a dummy.”You do not want to have anything over the other eye… Understand? The users to dead users ratio is more important here than the coolness factor.“That will slightly minimize the “Evil mad runway model scientist henchman with a monocle” look. Because that look is going to get you killed by Bond even if you are not a henchman.”Wearable computer is all about not getting in your way, and actually help when doing other things. That’s not possible with both eyes looking on the monitor all the time. If you are going to have to put the glasses on to see the cake recept every 2 minutes, you are better off with a tablet on fridge. One of the advantages of wearable is that they can be always on, always ready to use and not needing to put the stupid display away.“Probably because Bond is going to assume that anyone who looks like that is up to no good anyways.”I have only one thing to say to that. It’s the SuperVillain who got that kind of stuff:http://www.ubergeek.tv/article.php?pid=54Oh noes, I’ve got something else too, it could be a lot worse…http://igargoyle.com/archives/lol_mann.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164963",
"author": "OjM",
"timestamp": "2010-08-02T22:11:10",
"content": "“What i would prefer to see is the eyepiece on the inside of the eye so as not to obstruct the lower-right section of my eyesight.But considering the size of the eyepiece, it might not be that possible really, or allow for that much of a visibility increase.”If you mean that the display should be inside of the glasses, that’s exactly what I have done on my blog above. It’s not optimal, but it’s usable and the display is hidden well. Should change the chord to old telephone cord to get the matrix-look. The sunglasses may look a bit odd being a bit further away from my face, but it must be a less odd than having it on front.I could also get the big optic piece off and use a small magnifying lense and stuff, that would make it a lot smaller as the display itself is pretty flat. A see-through display would also be not that hard to do, Don Papp has done it before and I’ll try it someday too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165158",
"author": "Divergent Reality",
"timestamp": "2010-08-03T15:03:01",
"content": "Compared to other attempts at wearable computing, this is relatively elegant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165185",
"author": "OjM",
"timestamp": "2010-08-03T16:12:07",
"content": "Definitely yes, but we have to remember that Steve Mann had a completely hidden system in 90’s.Check Wikipedia article for wearable computer for pic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165323",
"author": "joe",
"timestamp": "2010-08-03T23:02:20",
"content": "why dont you get a notebook?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165835",
"author": "OjM",
"timestamp": "2010-08-05T16:43:01",
"content": "Because a wearable gives possibility to augmented senses, like nightvision for example… Or you could see someone stealing something from a shop, and say “computer record everything that happened in the last 5 minutes”.Could your notebook do that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166268",
"author": "LittleBit",
"timestamp": "2010-08-06T19:39:16",
"content": "I think it looks kinda freaky, like a borg, but not fully assimilated. Yett an enhanced humanoid with access to the Collective’s resources. He’s probably using that eye thingy to watch me in the shower or something!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166928",
"author": "bionicghost",
"timestamp": "2010-08-09T01:28:11",
"content": "“computer record everything that happened in the last 5 minutes”You should say: computer, record now.Wearables still can’t take video of the past.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166941",
"author": "zerth",
"timestamp": "2010-08-09T02:39:04",
"content": "@bionicghost:I used to have a video camera that did that, continually storing the last few minutes in a buffer that dumped to disk when I hit record. Awesome when somebody jumped their cue.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167130",
"author": "OjM",
"timestamp": "2010-08-09T19:07:51",
"content": "@bionicghostYeah, you just seem to lack some imagination. :)If one wanted, real-life adblocker would also be possible to do. Possibilities are endless…",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.420688
|
||
https://hackaday.com/2010/07/26/long-arms-required-electronic-trombone-2/
|
Long Arms Required, Electronic Trombone
|
Jakob Griffith
|
[
"digital audio hacks"
] |
[
"aluminum",
"bluetooth",
"circuit bending",
"competition",
"electronic",
"music",
"slide",
"tomas henriques",
"trombone",
"violin"
] |
[youtube
http://www.youtube.com/watch?v=0sX4Dleqz_0&feature=player_embedded%5D
Sadly, the video above is the only information we were able to find on the “Double Slide Controller” trombone, built by composer Tomás Henriques. As well as, the instrument took first place in the Georgia Tech Center
Guthman Musical Instruments Competition
. Right in front of a
Bluetooth bow for violins
, and a
circuit bending group
from New York, and…wait; it beat out our
favorite modified didgeridoo
? Better luck next year.
| 23
| 23
|
[
{
"comment_id": "162218",
"author": "omnomnomnom",
"timestamp": "2010-07-26T15:02:34",
"content": "It sounds great! Good work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162224",
"author": "Bob",
"timestamp": "2010-07-26T15:28:02",
"content": "sounds more like electric bagpipes!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162225",
"author": "Sytec",
"timestamp": "2010-07-26T15:35:19",
"content": "Wow, I’am amaze. This is the future, imagine a full orkestra with this kind of instrument…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162233",
"author": "t&p",
"timestamp": "2010-07-26T16:05:50",
"content": "WOW! that looks fun to play!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162245",
"author": "Aphex13",
"timestamp": "2010-07-26T16:38:26",
"content": "Wow, just wow. Amazing work. Anyone have any more details on the build?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162246",
"author": "Nick",
"timestamp": "2010-07-26T16:39:21",
"content": "It *almost* looks he’s using two nunchucks for the slides.This is awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162268",
"author": "Phate",
"timestamp": "2010-07-26T17:29:09",
"content": "It’s a MIDI/OSC controller. I spotted Native Instrument’s Massive running on that there laptop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162347",
"author": "zool",
"timestamp": "2010-07-26T21:33:12",
"content": "lol the crowd looks so enthusiasticsounded kind of like the begining of “shine on you crazy diamond”my guess as to what he’s doing is using two ribbon controlers (soft pots) for pitch bend then the buttons on the grips send note on msgs.. the joystick either controls knobs in the softsynth or selects different knobs or program changesalso a breath controlleri don’t know what the main board is, but the smaller board looks like a MidiTron",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162364",
"author": "spyder_21",
"timestamp": "2010-07-26T22:25:28",
"content": "Ok not to be a downer here, but am I the only one who thought it sucked.I like the part about the electronic trombone, but that background music (if that is what you would call it) drowned out the trombone sound, and still played even though he was doing nothing. Sounded like too much re-verb.Take that out, and only play the sound he is playing and maybe it would of sounded better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162392",
"author": "t3nigga",
"timestamp": "2010-07-27T00:24:20",
"content": "most of the work is being done by ni massive.. the trombone is just outputting simple midi data…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162394",
"author": "Jordan",
"timestamp": "2010-07-27T00:34:08",
"content": "Geez hackaday, don’t use the internet much do ya?! ;-) There is more information on youtube:http://www.youtube.com/user/thenriques1videooutThe Double Slide Controller is a new electronic instrument whose playing technique is based on the acoustic slide trombone. It has 2 independent slides and two versatile hand controllers that allow free motion in three spatial dimensions. In this clip the right hand slide is generating the pitches which are triggered by the breath of the player while the left hand slide is controlling the pitch of some drone tones.Several sensors built into the hand controllers allow the player to modify in real time the sound of the drone tones.In this example the software (MAXMSP) directs the melodic material via MIDI to a Yamaha VL-70m synth while the sustained notes are produced by a softsynth (NI Massive).One can also hear some delay+echo type effects on the main melody. These are controlled by a joystick on the right hand controller",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162397",
"author": "aztraph",
"timestamp": "2010-07-27T00:47:14",
"content": "pure awesomeness, i wanna see it in a jam session",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162409",
"author": "Dave",
"timestamp": "2010-07-27T01:23:16",
"content": "Why do they always have to have instruments like this play the crappiest music? I play trombone, and it is a full ranged instrument with a beautiful tone. This thing sounds like crap. Sure the tech is impressive, but it’s like a car that is technologically impressive, but is hideous to look at (Prius what?) Any MIDI instrument could play that bunk. Gimme an example of technology that stimulates BOTH sides of my brain, please.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162413",
"author": "The Clerk",
"timestamp": "2010-07-27T01:30:39",
"content": "I agree, this music is kinda crap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162421",
"author": "bigbob",
"timestamp": "2010-07-27T02:04:29",
"content": "@spyder_21 and everybody below, I totally agree. The music sucked big time. If he was just to make it play regular music it would be so much more appealing. If he wants it to play that garbage then go ahead, after he showcases the real musical abilities.Did anybody think it sounded like the menu to Halo when it just loops endlessly?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162425",
"author": "Jayjlow",
"timestamp": "2010-07-27T02:33:29",
"content": "sounds like a holophonor .. haha",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162470",
"author": "Tom",
"timestamp": "2010-07-27T06:05:50",
"content": "I like the music. Think, early 70s and every one is high…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162483",
"author": "MrTaco",
"timestamp": "2010-07-27T08:40:07",
"content": "If it’s an electric trombone, then why does he appear to be blowing on a reed-type mouthpiece? :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162575",
"author": "Jake-san",
"timestamp": "2010-07-27T14:15:19",
"content": "Impressive instrument, but when is the music going to start?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162694",
"author": "Dane",
"timestamp": "2010-07-27T20:28:37",
"content": "The K-Bow sounded more impressive to me. Honestly, I’m not really a huge fan of the midi-controller genre of instrument. As many have said, the real instruments themselves sound beautiful. I would personally like to see more electronic control of either existing instruments or instruments made to work with the control. Things like the auto-strumming instrument featured a long while back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162838",
"author": "Zane",
"timestamp": "2010-07-28T02:24:55",
"content": "Would have been nice to see what Jhon Balance could have done with this if he were still alive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162894",
"author": "therian",
"timestamp": "2010-07-28T05:32:16",
"content": "Dislike that it use MIDI, instruments should be analog otherwise all musicians will sound the same and there is no room for talent just playing the notes",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162931",
"author": "Jason Knight",
"timestamp": "2010-07-28T07:45:10",
"content": "I’d be more impressed if he played MUSIC on it, and not just out of tune industrial noise. (which is probably why the audience was half asleep) Pretty much sounds like a whole lot of nothing.Oh, and those of you pissing on midi apparently never heard of pitch bend, channel aftertouch, and the dozen other properties you can send like flutter tongue, growl, modulation, etc.See the EWI USB when combined with a good softsynth like “The Sax Brothers”. It sends midi over USB and has no problems with each musician sounding ‘unique’.http://www.youtube.com/watch?v=Y6bWKpF10NQhttp://www.youtube.com/watch?v=F8nFUO1hCv0http://www.youtube.com/watch?v=M6D4qpY_65M— this guy is on a Yamaha WX he kitbashed using clarinet parts to ‘look’ more like a real instrument.There’s more to midi than just sending note-on, note-off; were that more people using it REALIZED THAT!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.337567
|
||
https://hackaday.com/2010/07/25/hackaday-links-july-25-2010/
|
Hackaday Links: July 25, 2010
|
Mike Szczys
|
[
"Hackaday links"
] |
[
"blackberry",
"host",
"radio",
"splice",
"time-lapse"
] |
Radio Receiver
If you never got the chance to build one as a kid [JoOngle] takes you through the steps to
build your own radio receiver
. Details are a bit scarce but it’s nothing your friend Google can’t help you out with.
Fixing a Blackberry trackball
If your Blackberry trackball stops working well you can
try this non-technical fix
. Remember when mice used to have a ball in them and you would need to clean out the gunk from time to time? Forcefully skidding your Blackberry across a piece of paper does a similar service.
Linux time lapse
Open source can be a great help to small businesses. Here’s a way to use a
Linux machine to make time-lapse movies from surveillance camera
feeds. We especially enjoy the use of a desktop wallpaper that has the terminal commands necessary to start recording.
Host a webpage with Dropbox
Here’s a way to
host a simple webpage using Dropbox
. It’s one of those easy ideas that you wouldn’t come up with yourself. When you place an HTML file in your Dropbox you can get a public URL which will be built as a webpage when visited with a browser.
Inline splicing
To round out the weekend here’s [Osgeld’s] tips on
inline wire splicing
. We laughed as he recounted spearing himself with stray strands. This is pretty simple stuff but he’s explained it well and who’s to pass up a good tip?
| 20
| 20
|
[
{
"comment_id": "162025",
"author": "Joe",
"timestamp": "2010-07-25T20:36:18",
"content": "Sorry, but the splice instructions are wrong.For stranded wire, as shown in the tutorial, you should open the strands and mesh them into each other before twisting together. This is much stronger and not prone to uncurling, as a simple twist is.For solid wire, look up the “Western Union” splice, which uses two different twists for strength and stability.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162026",
"author": "Spork",
"timestamp": "2010-07-25T20:37:52",
"content": "The radio video was pretty good, but as noted it’s better to read more about it if you’re truly interested.On wire splicing, the ‘pigtail’ method is preferred for gang boxes where you use a twist connector and it doesn’t need to look pretty, but does need to come apart quickly/easily.The method shown is definitely the preferred method for small electronics or anything that is to be a ‘finished product’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162029",
"author": "Spork",
"timestamp": "2010-07-25T20:47:28",
"content": "@Joe, I have to disagree with the meshing of individual strands. The method described is plenty strong and does not slip apart when done correctly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162032",
"author": "kiernan",
"timestamp": "2010-07-25T21:14:47",
"content": "Please, no more instructables. Are there not any open sites to direct traffic to?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162035",
"author": "xorpunk",
"timestamp": "2010-07-25T21:23:41",
"content": "dropbox pages literally take like 30 minutes to knock offline, and that’s just a single attack machine not ddos. Of course this is the case with all ‘free’ webhosting.Just thought I’d mention it. People get these cheap or free hosts and act like it’s a sophisticated attack when it ends up tanked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162041",
"author": "Jake",
"timestamp": "2010-07-25T21:36:55",
"content": "I agree with Spork, this method is more than adequate for this kind of wire splicing, especially when combined with a nice adhesive-lined heat shrink.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162051",
"author": "nubie",
"timestamp": "2010-07-25T22:44:50",
"content": "Forget “spearing yourself on stray strands”.I was wiring Co-ax one day and a small coil with a stripped end slipped out of the attic and the core actually got stuck (embedded) in my scalp.It must have been bent like a hook at the end, cause I couldn’t pull it out at first.Moral? Watch out wiring heavy sharp wire overhead.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162052",
"author": "mostlymac",
"timestamp": "2010-07-25T22:45:30",
"content": "I never seem to have a soldering iron on hand, so I abuse the in-line splice. With single strand, I use the Western Union (which just came to me naturally, it’s the most logical means in my mind), but with stranded wire, I prefer to mesh the two together, then twist (and shout).As for the other links, I had an awesome radio kit that I built as a kid. Global Electronics I think. It had everything to kick start an engineer’s imagination, and I wish that I would have bought the fire/police scanner kit as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162053",
"author": "Alex",
"timestamp": "2010-07-25T22:52:18",
"content": "If I recall correctly Blackberry trackballs (at least Pearl and Curve) are removable and cleanable. I consists of the trackball in a squarish assembly with rollers and magnets. All of the assembly is quite submersible in rubbing alcohol. All that is needed is to pop off the ring with the appropriate prying tool of your choice and the assembly will lift out. I could be wrong on some models, but I can personally confirm this on the Pearl and Curve series. Other series may have this too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162057",
"author": "DETN8R",
"timestamp": "2010-07-25T23:09:15",
"content": "The simple hook and solder method for wire is an IPC standard.Tin and hook the wires to each other then add more solder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162062",
"author": "jh",
"timestamp": "2010-07-25T23:48:25",
"content": "@DETN8RI add a twist (hook the wires together and then twist the overlap back on wire). I also don’t solder before hooking, just twist the strands together. Then solder the joint solid and wrap with tape/shrink wrap. Have yet to have any of those joints give up… and some are going on 15 years old.Usually the wire gives out from movement/vibration before the joint will, even with the simple twist shown here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162078",
"author": "SleighBoy",
"timestamp": "2010-07-26T01:58:12",
"content": "Capturing video from a cam via one shell script is all fine and dandy, but since it is already on a *nix system, Motion (http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome) will do a lot more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162082",
"author": "Stephen",
"timestamp": "2010-07-26T02:26:29",
"content": "Sounds like they’re laughing at your pain there, Osgeld :P.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162161",
"author": "cgmark",
"timestamp": "2010-07-26T10:01:21",
"content": "The radio in the link is basically parts from a regular radio on a circuit board. The real hack is making a foxhole radio. Only parts you need are wire, razor blade, safety pin, pencil, and earphone . No battery or other power required.You can learn a ton about how a radio works by building one. When the zombie apocalypse happens and there is no power, you will be able to hear how close they are getting!http://www.youtube.com/watch?v=skKmwT0EccE&feature=fvwFor wire connections I twist the strands together with pliers to make an almost single conductor then us the western union method to join the wires. The wire will break usually before the connection will. No solder needed. Called western union because it is what was used over 100 years ago on telegraph wires so you know it is a strong connection. I was taught this method as a kid by a guy that was a ham.It also the method required in the military when joining wires.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162177",
"author": "mowcius",
"timestamp": "2010-07-26T11:30:14",
"content": "Oh Osgeld, you really must be bored sometimes :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162204",
"author": "woutervddn",
"timestamp": "2010-07-26T13:03:47",
"content": "@kiernan: Instructables is free. I have an account there and I tell you it’s damn handy for some tutorials.+ I’ve never got unnecessary mails on instructables.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162259",
"author": "pod",
"timestamp": "2010-07-26T17:11:57",
"content": "the blackberry tip is exactly the same as the one you posted long time ago about fixing the “broken” one button apple mouse scrolling ball",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162303",
"author": "walt",
"timestamp": "2010-07-26T19:31:09",
"content": "Please, no more instructables!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162841",
"author": "The Steven",
"timestamp": "2010-07-28T02:30:14",
"content": "It’s good to know that I’m not the only one that knows this as a “Western Union Splice”http://www.tpub.com/neets/book4/12a.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406148",
"author": "Andrei Cociuba",
"timestamp": "2011-06-15T15:18:43",
"content": "just a quick example of dropbox website hosting.http://dl.dropbox.com/u/4092999/main.htmlit will soon add some of my tinkerings to it, but i think it looks pretty enough for half an hour worth of work",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.560226
|
||
https://hackaday.com/2010/07/25/alternative-morse-code-keys/
|
Alternative Morse Code Keys
|
Mike Szczys
|
[
"Wireless Hacks"
] |
[
"cw",
"key",
"morse code",
"radio"
] |
Add a bit of interest to your radio equipment with one of these
unorthodox CW keys
. [OH6DC] has been hard at work posting almost sixty of these hacks. Above you can see an alarm clock whose snooze button acts as the key, and a nail clipper used as a key. There’s a banana , a cross-country ski shoe , and a toaster key. The rest you’ll have to see for yourself. Any of these would work perfectly with that
Morse code keyboard
you’ve been wanting to build.
| 18
| 18
|
[
{
"comment_id": "161997",
"author": "anon",
"timestamp": "2010-07-25T18:11:53",
"content": "Why?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162004",
"author": "baobrien",
"timestamp": "2010-07-25T18:33:29",
"content": "Banana!?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162007",
"author": "biozz",
"timestamp": "2010-07-25T19:00:44",
"content": "ill take 3 of whatever he was on when he came up with all of this stuff",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162010",
"author": "Jake",
"timestamp": "2010-07-25T19:10:41",
"content": "I was sad when they dropped the code requirements for HAM licenses :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162013",
"author": "maybe",
"timestamp": "2010-07-25T19:27:01",
"content": "1. Look around2. First 60 objects noticed plus contacts/wire3. ?????4. PROFIT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162014",
"author": "r_d",
"timestamp": "2010-07-25T19:29:49",
"content": "Wow. I just started writing a morse code virtual keyboard earlier this week.I don’t know morse yet, but the plan is to show which keys are accessible by a dot or a dash and provide enough feedback (i.e. timing bar, etc.) so that anyone (such as myself) can pick it up and learn by doing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162024",
"author": "ehrichweiss",
"timestamp": "2010-07-25T20:02:18",
"content": "@baobrien, aren’t you glad he didn’t say ‘orange’ again..:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162027",
"author": "joe57005",
"timestamp": "2010-07-25T20:44:11",
"content": "i bet macguiver sucked at morse code",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162033",
"author": "xorpunk",
"timestamp": "2010-07-25T21:20:13",
"content": "dropbox pages literally take like 30 minutes to knock offline, and that’s just a single attack machine not ddos. Of course this is the case with all ‘free’ webhosting.Just thought I’d mention it. People get these cheap or free hosts and act like it’s a sophisticated attack when it ends up tanked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162036",
"author": "xorpunk",
"timestamp": "2010-07-25T21:24:24",
"content": "oops clicked wrong link, delete that comment. do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162050",
"author": "someham",
"timestamp": "2010-07-25T22:38:40",
"content": "In a pinch I’ve been known to use a rubber band, and spoon, some aluminum foil, and the wire and plug from some old headphones. Works every time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162055",
"author": "hpux735",
"timestamp": "2010-07-25T23:01:21",
"content": "@jakeI’m actually kinda happy they did. I never cared much about HF until now. I have technician, and since they dropped the requirement I can use RTTY and SSTV on 10M, and I can use morse on 80, 40, and 15. I think that working in HF is going to make me _want_ to learn Morse code. Before it would have been an obligation, and I wouldn’t have enjoyed learning it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162075",
"author": "pelrun",
"timestamp": "2010-07-26T01:42:06",
"content": "I LOVE YOU CW GUN!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162128",
"author": "Fwirt",
"timestamp": "2010-07-26T06:27:54",
"content": "Why not just use a real key? It’s bound to work better. Honestly, this is more like, “How to turn most household objects into momentary switches using tinfoil.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162154",
"author": "Chris",
"timestamp": "2010-07-26T08:58:45",
"content": "It would have been so easy to make that nail clipper not blow ass, and even function as a nail clipper at the same time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162346",
"author": "tim",
"timestamp": "2010-07-26T21:26:28",
"content": "Now that’s hacking,pure McGyver style",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162420",
"author": "Ryan",
"timestamp": "2010-07-27T01:52:52",
"content": "I’d tap that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "181629",
"author": "Elizabeth",
"timestamp": "2010-09-15T16:45:19",
"content": "I want the nail clippers. Seriously, CW in my pocket, how cool would that be?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.818276
|
||
https://hackaday.com/2010/07/25/guitar-effect-shield-for-maple/
|
Guitar Effect Shield For Maple
|
Mike Szczys
|
[
"digital audio hacks"
] |
[
"arm",
"effect",
"filter",
"guitar",
"maple"
] |
[Okie] designed this
audio effect shield for Maple
. You’ll remember that
Maple is a prototyping system
built around an ARM processor, so there’s plenty of power and speed under the hood. First and foremost, the shield provides input and output filters to keep noise out of the system. From there a set of potentiometers let you change the effect, with the manipulation like echo, distortion, and ring modulation happening in the firmware.
| 10
| 10
|
[
{
"comment_id": "161986",
"author": "Javajunkie",
"timestamp": "2010-07-25T17:21:42",
"content": "And now to design an arduino equivalent.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161996",
"author": "WeAreTheScientist",
"timestamp": "2010-07-25T18:00:10",
"content": "Yippie-do-da!I have no idea what this does… But being a guitarist I feel that I must celebrate the marvellous instrument’s rare appearance on HaD.Peace.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162019",
"author": "qwerty",
"timestamp": "2010-07-25T19:47:00",
"content": "Most of the noise you hear in the samples is not due to the conversion but rather to the opamp being used. For these applications a very low noise one is preferable, along with multiple cells filters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162034",
"author": "zool",
"timestamp": "2010-07-25T21:22:50",
"content": "looked at this and thought cool!, then listened to it, :/ not what i was expectingi’ve heard similar things but was expecting more because of the arm processor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162121",
"author": "Eric Clapton Fan",
"timestamp": "2010-07-26T04:50:01",
"content": "Travis is a high school teacher and coach in a small South Texas town for eleven years. His love for gadgets began at a very early age, and he has been a cross between a jock and a geek for most of his life. He has two boys (ages 5 and 2), and a wonderful wife who lets him be a gadget freak",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162195",
"author": "Woofpickle",
"timestamp": "2010-07-26T12:16:33",
"content": "As someone who has had a blackberry, and completely disassembled it to try and get it to work again: Your fix is meaningless if the springs in the rollers have corroded away.Water damage and smart phones…Who’da thunk it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162196",
"author": "M4CGYV3R",
"timestamp": "2010-07-26T12:17:24",
"content": "Seems like you would be better off using a DSP or some simple components(resistors, caps) in the right order. I’ve built entire envelope followers, wah pedals, and things of that like without ever using an IC bigger than a transistor.Also, if they’re not building the Maple thing themselves, it’s no better than an arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162417",
"author": "DeFex",
"timestamp": "2010-07-27T01:45:51",
"content": "For about the same as a maple and the added work you could get a spin semiconductor dev board for their little DSP, which is quite easy to program and sounds really good.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164645",
"author": "noah vawter",
"timestamp": "2010-08-02T02:16:57",
"content": "@defex, yeah, if you know what you are doing, you can always make something cheaper and more specific. I’m excited about the Maple guitar effects because it’s still affordable, and it will get lots of users’ and players’ eyes in one place developing at the same time. If ya didn’t know, it’s lets you use virtually the same dev environment as Arduino. Thanks for the links tohttp://diystompboxes.comandhttp://spinsemi.comI’m always interested in new DSP hardware and DIY music equipment!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167168",
"author": "Rehearsal Space",
"timestamp": "2010-08-09T23:36:31",
"content": "they were talking about this over at the puntz website. it was beginning to develop into a firey conversation.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.037782
|
||
https://hackaday.com/2010/07/25/extremely-organized-prototyping/
|
Extremely Organized Prototyping
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"briefcase",
"organize",
"pic",
"prototyping"
] |
We’ve got a couple of very high-tech shoe boxes in which we store our prototyping accessories. You’ll find a collection of LCD modules, chips on breakout boards, switches soldered to homemade boards for easy breadboarding, and much more. That is assuming you can find anything in that mess of components.
[Shahriar] took a different approach. He’s mounted
all of his prototyping gear inside of a briefcase
. This large collection of high-end boards include PIC prototyping, various LCD screens, and a large portion of SparkFun’s stocked boards. It’s much more advanced than
the Arduino to-go platform
, and you can see a full walk through of the system after the break.
[youtube=http://www.youtube.com/watch?v=Bw9w8wbnYNE]
Short overview
[youtube=http://www.youtube.com/watch?v=iKyCSCaQ3tQ]
Full monte
| 55
| 50
|
[
{
"comment_id": "161966",
"author": "SS",
"timestamp": "2010-07-25T15:39:31",
"content": "ADD or extreme OCD?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161972",
"author": "biozz",
"timestamp": "2010-07-25T15:50:50",
"content": "i like it … but personally i use a book shelf to hold all my proto stuff and pull them down as neededid like to see him prototype with this on an airplane and better yet see the face on the guy next to him XD",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162859",
"author": "Ivan",
"timestamp": "2010-07-28T03:22:42",
"content": "He would never get into a plane with those things: security would think it’s a bomb.",
"parent_id": "161972",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161975",
"author": "spiritplumber",
"timestamp": "2010-07-25T16:01:57",
"content": "We finally know what’s in the TF2 briefcases!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161976",
"author": "Syr",
"timestamp": "2010-07-25T16:17:05",
"content": "Airport security would like a word with you, please follow me…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161978",
"author": "Shahriar",
"timestamp": "2010-07-25T16:27:28",
"content": "The purpose here was (as explained in the video) to create a library of code for these components and share it with others. The purpose it not to just store these parts, but to have them readily available and interconnected.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161979",
"author": "CER",
"timestamp": "2010-07-25T16:30:29",
"content": "This is a great project. Nice job on keeping everything so neat! I’ve made a development board myself and I know how much time it saves in prototyping. I can’t image how much better a full kit is. I can’t imagine adding too much more to that.What do you do if you need the RFID reader on the ds PIC? It seems a little complicated to do all that wireless when a jumper wire would suffice.I’m really looking forward to seeing your libraries develop. Are you programing the PICs in C or assembly? If C, are you using the HiTech or Microchip C?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161980",
"author": "Pookie",
"timestamp": "2010-07-25T16:32:42",
"content": "This would be fun to take thru airport security",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161982",
"author": "Jake",
"timestamp": "2010-07-25T16:37:12",
"content": "OK so be basically stuck a bunch of pre-made boards in a suitcase… Why is this relevant? Sorry, HAD, but I have known hundreds of engineers and I doubt a single one of them would have any interest in doing something like this! It makes no sense, no one is going to set a bulky aluminum suitcase full of crap on their desk when they want to mess with their DSPIC development board!!!I mean, if he had any relevant project mentioned that used ALL of this crap in both boxes, and showed it working, then maybe I’d accept it as a valid project… This looks like a kid with a bunch of money and some gorilla glue, who didn’t know how to make something with all this stuff, so he glued it in a box and called it a project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161983",
"author": "M4CGYV3R",
"timestamp": "2010-07-25T16:55:29",
"content": "That is an impressive case of stuff. I, too, want to see you try to bring that through an airport. I suggest showing up a few hours early and telling them before you even put it on the belt.Also, when adding new stuff, stay clear of Arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161984",
"author": "mowcius",
"timestamp": "2010-07-25T17:05:19",
"content": "Someone has too much money if he has all of that for prototyping…Has he done anything interesting with it all or is it just a massive box of possibility?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161998",
"author": "chris",
"timestamp": "2010-07-25T18:17:39",
"content": "that’s got to be at least $1,000 in boards per case. I want one though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161999",
"author": "chris",
"timestamp": "2010-07-25T18:20:29",
"content": "i use stacks of those craft cases with all the sections for my parts, along with a few drawers, bookshelves, and shoe boxes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162000",
"author": "Michael Bradley",
"timestamp": "2010-07-25T18:29:29",
"content": "Looks realy neat and cool, however, I have to agree with Jake.I personaly hate those dev boards with a bazillion items attached, there is always a set of pins I need but cant use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162001",
"author": "supershwa",
"timestamp": "2010-07-25T18:31:04",
"content": "I think Jake’s jealousy has him on an angry rant – he does make a point that this isn’t a 100% working hack/project, but it’s definitely a VERY IMPRESSIVE portable electronics workstation, probably best for the dedicated hobbyist or engineer who isn’t bored of his day job…once a “hobby” becomes a “job”, it’s not as much fun anymore.Folks, don’t whine that this guy has spent “too much” money on this — if you’re all such engineering and programming geniuses why in the heck aren’t you selling your cool projects to high bidders so you can afford your own briefcases of prototyping madness?Don’t be upset at Shahriar for having more money to spend than others…this is AWESOME, and deserves praise and respect!Very cool Shahriar — I love taking my work with me when I travel as it appears you do (a few hours of work here and there in Hawaii or MX helps make extra coin for those late night luaus and bar-hopping expeditions!)Be sure to update us on your future projects that are birthed from your briefcase duo!Uber praise and respect! ;p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162008",
"author": "Jake",
"timestamp": "2010-07-25T19:05:28",
"content": "@supershwaNo, that’s not it at all – This kid has a bunch of pristine dev boards and accessories in suitcases. That makes no sense! When I am working with a dev board, I don’t want a bunch of other stuff that is irrelevant to the current project cluttering around me. To me, it makes no sense to put things together like this, and I don’t know a single engineer who’d think this is a good idea. Furthermore, what if you need to solder to those boards? What if you need to etch your own board and interface it with them? The briefcase clutter suddenly becomes a huge problemYour statement seems to imply that this OCD person’s dream is a marketable concept that is capable of making money – I just isn’t.It looks to me like he enjoys looking at his dev boards and wants to be able to carry them around and show them to people to get some oohs and aahs. That’s fine, but it’s just not practical. I don’t have a single development board left that doesn’t have random wires and parts glued or soldered to it from projects of the past. I don’t carry around my entire collection when all I need is a single FPGA board. I can’t effectively use these tools if they are fastened in to a re-tasked briefcase. His boards are virgin – It’s my guess that he’s probably in college and is still learning how to use and interface them, and likes to look at them and touch them and have them all in one place. That is fine, just don’t act like this is some breakthrough! It’s not even a hack!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162009",
"author": "Jake",
"timestamp": "2010-07-25T19:08:29",
"content": "@ChrisMe too, it has worked well. I get the snap-top plastic cases for all my passives (Save big money at menards!) and have a few file cabinets that I’ve gotten at auctions. One piece of advice – If you use file cabinets to store things, put a piece of plywood in the bottom! I had a newer (read: cheaper, wal-mart special) cabinet that had rather thin metal in the bottom, it collapsed under the weight of the stuff that was in it, and I damn near had to flip the cabinet upside down to get it to open back up. They just don’t make things like they used to!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162012",
"author": "Squirrel",
"timestamp": "2010-07-25T19:25:50",
"content": "More advanced hardware than the A2G? YesMore advanced hackery than the A2G? NoInteresting concept. Would like to see a project that actually uses all of those components, though.@Jake I more or less agree with you, but the one advantage this has over your setup is its portability",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162016",
"author": "Jake",
"timestamp": "2010-07-25T19:34:44",
"content": "@SquirrelDude, you’d be surprised to see what I can fit in an old lunchbox =P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162017",
"author": "Jerome Demers",
"timestamp": "2010-07-25T19:38:46",
"content": "the nightmare of any bomb squad!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162043",
"author": "ab",
"timestamp": "2010-07-25T21:56:19",
"content": "Ahh, maybe it is just a bunch of devices in boxes, but for others it may be an idea for workplace/hobby organization. Of course the practical usage will show if this is useful. Therefore let him learn on his own instead of criticizing him personally and don´t criticize just for showing it. I don´t know the intended group of readers for HAD, but usually all are in different places on their personal learning curve.Not every try to avoid chaos is OCD or ADS. Some protection to those boards is necessary or they die by pieces of metal lying on the desk.I think it´s a nice idea to have them in those boxes and have some system how to store the equipment – which does not mean the way shown here is the best.First, because it´s (at least for some people) nice to start something from a nice and tidy state and second, because… when people without any clue of how this stuff works need to look at it and maybe pay for whatever you do they look for spruceness and order instead of practical usage.It strongly depends on your way how to start with something. Some people yank the exactly fitting piece out of a heap and assemble a complete device in this way, others spend their spare time in sorting the heap before they start and create a new heap that they call project.Regarding the airport security stuff: they have no problems with wires and electronics, they´ve somehow gotten smart enough to know bombs usually need explosives (because… honestly, a cell phone contains enough electronics to achieve the same result).wbr",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162046",
"author": "Brennan",
"timestamp": "2010-07-25T22:13:41",
"content": "@Jerome DemersIf you’re trying to defuse a bomb, you could always Harrison Ford’s logic from Air Force One. Clearly the red/white/blue wires can’t be it since he’s the president so cut the green one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162047",
"author": "Shahriar",
"timestamp": "2010-07-25T22:23:32",
"content": "@supershwaIts nice to see the internet anonymity at its best! I didn’t know that you could figure out my whole life by just looking at these suitcases! How nice of you.To answer your unjustified assumptions, no I am not a kid, in fact I have a Ph.D. in Electrical Eng. If you would like to see my publications please, send me an email and I will gladly give you my full info. If you need my consultation for you next mm-wave mixed-signal IC, I charge $200 an hour.Second, had you actually watched the video, you would realize that I don’t plan to “sell” and make money out of this, this is a TOY and just for me. However, I felt that I would share the library of code that I am working on. What a horrible thing to do!Third, yes I do make enough money to afford all this. I don’t see this as a problem.Fourth, I have made hundreds of projects, most of them as gifts and many are lying around my place.Good luck,",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162049",
"author": "Shahriar",
"timestamp": "2010-07-25T22:35:03",
"content": "My above comment was meant for Jake.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162056",
"author": "Geoist",
"timestamp": "2010-07-25T23:05:30",
"content": "Wouldnt want to walk through an airport with those!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162063",
"author": "Tetrafluoroethane",
"timestamp": "2010-07-25T23:55:15",
"content": "I have to agree with the doubters here. Nobody I know who actually does prototyping keeps all their stuff bundled up like this. Here the focus is on the set up, not on actually doing something useful with it. Every well-used prototype board I have seen looks like Jake’s: horribly abused and mangled for the sake of making something work. Not to mention it is pretty rare (in my experience) to need to prototype anywhere other than your lab. Unless, that is, you carry a van full of all your other parts around with you as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162068",
"author": "MrCung",
"timestamp": "2010-07-26T00:31:09",
"content": "@Jake – I totally agree, not saying that I wouldn’t like to have the thing, but comon this is not very practical.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162079",
"author": "Jake",
"timestamp": "2010-07-26T01:59:15",
"content": "Maybe he likes to do his prototyping *IN A VAN, DOWN BY THE RIVER!*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162119",
"author": "Brian",
"timestamp": "2010-07-26T04:41:46",
"content": "sure, it may be a bit over the top, but it looks convinient for storage. How nice it must be to just pull out one “tool” for most of your prototyping needs, and sure, you will need breakout boards for other components and stuff, but having a breakout board for many hard-to-prototype-with parts (smt, potentiometers, led/resistor combos) makes it so much easier, less of a pain, and a lot less stress on where an error can be. Granted, I feel like this isn’t the best execution, but it would certainly be handy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162130",
"author": "Jake",
"timestamp": "2010-07-26T06:42:40",
"content": "Brian, I don’t think the point of these suitcases is to pull anything out – The wiring is all zip-tied in, he seems to want to keep these boards all together and inside the suitcases…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162142",
"author": "James",
"timestamp": "2010-07-26T08:25:26",
"content": "He’ll struggle to use the DSPIC boards SD card slot in future if it’s glued in.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162160",
"author": "strider_mt2k",
"timestamp": "2010-07-26T09:54:50",
"content": "It seems like Hack a Day commenting is settling into a contest to see who can be the biggest douche to the person/project in question.That’s a sad commentary indeed.It’s clean, looks cool, and if it works-it’s good!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162182",
"author": "click",
"timestamp": "2010-07-26T12:02:42",
"content": "hmm, this is a pretty different approach then I use to take, I usually come up with something I want to do, and then get the get the hardware necessary to get there, sure, if I suddenly got a bunch of money, I have a lot of things id like to buy, but I don’t think I would get it all at once.It would be frustrating program one of the boards when you have so many other things taking attention. But maybe thats part of the challenge.Also, some stuff just don’t make sense, why is the accelerometer mounted inside the case? Imagine trying to debug your code swinging the case around while looking at one of the many lcd:s :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162197",
"author": "Brian",
"timestamp": "2010-07-26T12:24:37",
"content": "@clickyeah i have no idea why he put an acccelerometer in there, that just makes no sense :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162208",
"author": "Shahriar",
"timestamp": "2010-07-26T13:27:28",
"content": "With regards to the accelerometer, you have to consider that the box runs on battery as well. One of the things that I did with it was to write a ‘logger’ and then have the suitcase in my car on the way to work. Then at work I could download the log and see my acceleration to way to work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162214",
"author": "chris",
"timestamp": "2010-07-26T14:41:57",
"content": "@strider_mt2ki agree. i actually like it really, its a cool way of combining all his development boards and keeping them safe. though it would be better if you could pull them out and use them individually. He could put an etched PCB on the bottom with headers, that all the boards and parts plug into. then when he only needed one board, he could just pull it out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162215",
"author": "Dick",
"timestamp": "2010-07-26T14:51:17",
"content": "@JakeWho the hell are you? What projects have you done and why should we care what you think?Shahriar has gone ahead and put some time and effort into giving us a look at his interesting development setup and all you can do is level completely unsubstantial and ill-informed criticism.@ShahriarPlease ignore Jake’s comments and those who agree with him. They’re intentionally trolling, haven’t watched the videos, and/or haven’t put in any thought into the potential of your development environment.I’d love to see more in depth info on how you put it all together and how you intend to use it for future projects. Cheers!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162216",
"author": "Dick",
"timestamp": "2010-07-26T15:00:12",
"content": "…after getting more feedback that is",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162228",
"author": "Jake",
"timestamp": "2010-07-26T15:44:39",
"content": "@DickI assure you that my feedback is not ill-informed. I’ve been working in an APD group for about 3 years now, and hardly a week goes by where I am not hacking up some development board, or some board from an old project, trying to make it do what we need it to do. If you ever get in to development, you’ll see that my statements are true!Myself and those who agree with me just have a different viewpoint than you guys – We are apparently the ones that are working in the “real world”, while you guys are in the “liking to look at cool stuff” stage or something? That is fine, but just understand that I in fact *do* know what I am talking about; I would never fasten a bunch of virgin dev boards in suitcases like this, nor would any of my fellow engineers. It makes no sense from a development standpoint. It is, however, completely acceptable if you have friends who like to look at circuit boards and LCD screens that flash clever little messages when you press buttons ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162234",
"author": "chris",
"timestamp": "2010-07-26T16:09:47",
"content": "@JakeWell not everyone is the same as everyone else, and not everyone thinks the same as everyone else. Shahriar was just showing it off, its not like hes forcing everyone to use it. if you don’t like it don’t build it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162243",
"author": "Dick",
"timestamp": "2010-07-26T16:33:19",
"content": "Bully for you Jake, maybe you’d like to contribute your own development environment instead of making juvenile insults.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162244",
"author": "Jake",
"timestamp": "2010-07-26T16:37:45",
"content": "@chrisI guess my only point here is that this isn’t a hack and I don’t see this “platform” being useful for anything other than looking at!!!@DickI don’t feel like I am insulting here, just giving some criticism that is hopefully constructive? I am dead serious when I say that I’ve never known an engineer that would think this is a good idea. If you don’t believe me, look for some pictures of a hardware engineers work area. I promise that you’ll never see suitcases full of neatly organized, virgin development boards ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162254",
"author": "strider_mt2k",
"timestamp": "2010-07-26T17:02:14",
"content": "Wire ties can be cut, and projects can evolve.Cut the wire ties binding your sphincters up!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162255",
"author": "Dosbomber",
"timestamp": "2010-07-26T17:04:58",
"content": "@Jake:“If you use file cabinets to store things, put a piece of plywood in the bottom! I had a newer (read: cheaper, wal-mart special) cabinet that had rather thin metal in the bottom, it collapsed under the weight of the stuff that was in it, and I damn near had to flip the cabinet upside down to get it to open back up. They just don’t make things like they used to!!!”That’s for sure.. the real story there is if you want something of some decent quality, don’t find it at Wally-World. I got a 4-drawer cabinet at Staples a few years ago, and have stored almost everything in there. They’re so flexible! From electronics boards to tools to a fair number of heavy gold and silver coins without a single problem with metal warping from excess weight (rarely ever kept paper files in there though, ironically). The damn thing must be bullet proof (note: I have never tested its bullet-proofness, however I have kept thousands of rounds of ammunition in there already).Relevant to this topic, maybe smaller boxes with more product-specific contents would be more my thing, but whatever works for him is fine for him.Personally, I do all my prototyping on a repurposed cafeteria-style plastic lunch tray with some velcro strips (soft loop side) stuck to the top, with a double-wide breadboard in the center. Any accessory boards I need for that project are in modular form with velcro (hook side) on the bottom so I can stick them anywhere. Works great for me.Dosbomber",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162256",
"author": "Dick",
"timestamp": "2010-07-26T17:06:04",
"content": "@JakeYou’re certainly being very critical, but I wouldn’t call it constructive criticism.I must say I have no idea why you’re focusing on the professional applications of this particular HAD entry. Most HAD posts are from/for hackers and hobbyists, not professional engineers.This is interesting to me as an educational project. One can learn a lot in the process of linking up several different devices and learning how to interface and create code libraries for them. Yes, the ultimate practicality of such a setup is debatable, but since when has that been a major issue on HAD? As it is, it’s fun and educational, and that’s good enough.Maybe you can lend your expert opinion on the Daft Punk Helmet replica, and explain why no hardware engineer would ever put that on his desk. In fact there are hundreds of articles like that on HAD, and I’ve always asked myself why any self-respecting engineer would want to sully their hands with things so useless to them. I’m sure you can do HAD a real service by pointing out all the things that are useless in the professional world of electronics, so that should any unsuspecting engineers come to HAD looking for ideas on how to setup their companies’ labs they won’t be led astray.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162261",
"author": "Caleb Kraft",
"timestamp": "2010-07-26T17:15:42",
"content": "Ok guys, you’ve each had your say. enough bickering about who knows more or who works more. Stay on topic please.",
"parent_id": "162256",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162275",
"author": "Jake",
"timestamp": "2010-07-26T17:56:17",
"content": "@DickYour name says it all ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162299",
"author": "mongrelbitch",
"timestamp": "2010-07-26T19:16:28",
"content": "“once a “hobby” becomes a “job”, it’s not as much fun anymore.”Guess this is why I can’t get a job and being alcoholic since years cause I dont want to grow up and accept the truth in this :(But hey I have 6-7 years more left before I kill myself with alcohol and drugs so I can say I was right.You fucking drones go back to the factory and have fun thinking about ur lives on 40-50 yo. I already lived a full one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162355",
"author": "GroverDill",
"timestamp": "2010-07-26T21:55:45",
"content": "This is AWESOME. I think what some of the other commenters are missing is that this is perfect for embedded software development. Maybe it’s less useful from a hardware development standpoint, but who cares? The point of these development boards is that you don’t want to bother with all of the minute details of hardware interfacing while you’re getting your software written.Assuming that this guy can change around the modules in his suitcases to fit whatever project he’s most interested in at a given time (and let’s be honest, of course he can), then this is a very good prototyping solution. I frankly don’t see a downside, especially if the alternative is a bunch of bare circuit boards spread across a messy workbench with jumpers strewn everywhere to connect things together.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162391",
"author": "KnightFire",
"timestamp": "2010-07-27T00:24:05",
"content": "Ah… where to buy a (TF2) briefcase similar to those – in Canada?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162395",
"author": "NatureTM",
"timestamp": "2010-07-27T00:35:06",
"content": "Whooooh! James Bond meets EE nerd! Awesoooome!I think this just made electronics cool. I can totally see J. Timberlake carrying one of these around. I want!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162580",
"author": "fedeortiz12",
"timestamp": "2010-07-27T14:41:56",
"content": "I think this is just wonderful!! But it might be good for some people only. For example I study Electronic Engineering 1200km from my hometown and when I go back and visit I always take some stuff with me to keep working on some project and ALWAYS forget something!!It really pisses me off!!But again, I see how this might seem too much for someone…I would like to see something like this but with oscilloscope, function generator, variable power supply, a 50watt 0,01ohm resistor, multimeter… what am I missing?Either way, nice piece of equipment!! Keep it up!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.991708
|
||
https://hackaday.com/2010/07/24/daft-punk-helmet-replica-finally-completed/
|
Daft Punk Helmet Replica Finally Completed
|
Mike Szczys
|
[
"Wearable Hacks"
] |
[
"costume",
"daft punk",
"helmet",
"replica",
"sculpting",
"vacuum forming"
] |
[Harrison Krix]
finished his Daft Punk Helmet
replica and posted about it this week. We took a look at
his work back in October
but he’s come a long way to pull off a legendary build. Take three minutes after the break and see 17 months worth of work. So many skills were pulled together to make this happen; sculpting, mold making, painting, electronic design, mechanical design, and bad-ass-ery. Crammed in along with your noggin are a bag-full of LED boards but the Arduino that controls it all resides outside, in a project box tethered to the helmet. This is a masterpiece of socially-unwearable geek fashion.
[youtube=http://www.youtube.com/watch?v=H0TBZeCgL0E&feature=player_embedded]
[Thanks Eric & Kirov]
| 65
| 50
|
[
{
"comment_id": "161792",
"author": "Tech B.",
"timestamp": "2010-07-24T18:06:27",
"content": "This makes me want to build one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161794",
"author": "r2d2",
"timestamp": "2010-07-24T18:23:55",
"content": "OMFG!!! i just jizzed my pants, this is a masterpice, Q_Q BRAVO!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161795",
"author": "Zack-0",
"timestamp": "2010-07-24T18:24:26",
"content": "Man, this is awesome.I rate this 15/10.10/10 for the helmet plus other 5 points for the video-making.You’re an Artist!!ps:forgive my poor english",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161796",
"author": "Fallen",
"timestamp": "2010-07-24T18:25:46",
"content": "This is incredible!Very awesome build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161798",
"author": "RBRat3",
"timestamp": "2010-07-24T18:55:46",
"content": "Nice work… From what I saw in the video there were multiple castings so it would seem he was making more than one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161801",
"author": "rain",
"timestamp": "2010-07-24T19:03:02",
"content": "wow!! SOB!! lol :)please make cysis mask…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161802",
"author": "Dmitry Grinberg",
"timestamp": "2010-07-24T19:03:53",
"content": "This is the most awesome thing since Y2K!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161803",
"author": "Foxdie",
"timestamp": "2010-07-24T19:22:43",
"content": "A lot of love went into that helmet, he’s a true DP fan :)Undoubtedly when Daft Punk tour next year in 2011 he’ll be right there funking out!I’ll shake his hand if I see him :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161806",
"author": "bitflusher",
"timestamp": "2010-07-24T19:35:43",
"content": "awsome build!cannot imagine putting that much work in a helmet but it worked out to be perfect.projects like this are ofcourse all about the build and not about using it because it will be on a shelve somewhere to be shown to other geeks only once in a while. so the movie shows the important part of the project 99% build 1% usage!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161810",
"author": "Mike",
"timestamp": "2010-07-24T19:49:48",
"content": "For sale on ebay in 5…4…3…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161811",
"author": "biozz",
"timestamp": "2010-07-24T19:56:52",
"content": "if i learn how to DJ blindfolded i may make something like this",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161816",
"author": "Hirudinea",
"timestamp": "2010-07-24T20:08:04",
"content": "SUCK IT BOBA FETT!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161818",
"author": "Rob",
"timestamp": "2010-07-24T20:19:06",
"content": "Amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161819",
"author": "Hitek146",
"timestamp": "2010-07-24T20:21:51",
"content": "As lame as Daft Punk is, this is a beautiful piece of of art…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161826",
"author": "smth",
"timestamp": "2010-07-24T20:47:41",
"content": "omg! sweet :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161832",
"author": "sean",
"timestamp": "2010-07-24T21:15:33",
"content": "the epiphany of working hard to build something beautiful. Well, well done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161834",
"author": "anon",
"timestamp": "2010-07-24T21:31:53",
"content": "wow, super amazing. really great build and the craftsmanship is amazing as well. Your copious amount of hard work payed off with this fucking awesome piece of useless art.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161839",
"author": "Mr_Bishop",
"timestamp": "2010-07-24T22:11:16",
"content": "Thank you for posting this, because of the video I saw (up top side), I decided to look into the group Draft Punk and have thus discovered a new genre to love “House”. Not to mention that helmet is sweet. I wonder if he can see through it, adding a LCD panel or something similar, internal noise canceling speakers (Bose,ect) and Bluetooth 4 to handle all the video+audio goodness would make this the most amazing Wearable Video Display ever. seriously this helmit in and of its self has given me many ideas. I really wish i had the tools to develop something similar to this bad boy.sexy underwater, space worthy HUD. lol but that just a dream of mine (for now).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161841",
"author": "Perry",
"timestamp": "2010-07-24T22:35:16",
"content": "I WANT THIS SO FREAKING MUCH!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161844",
"author": "M4CGYV3R",
"timestamp": "2010-07-24T22:50:10",
"content": "@Mr_BishopWelcome to the Electronic Music Generation.If you enjoyed House music, I highly recommend Electro, Breakbeat, Dubstep, and Downtempo.This helmet is off the hook. I looked into some of that plastic chroming treatment, and like his first try everyone I talked to was just a dick about nickel-and-diming me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161849",
"author": "Hans",
"timestamp": "2010-07-24T23:00:39",
"content": "Color me stupid…but what video is this from?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161864",
"author": "ben",
"timestamp": "2010-07-25T00:45:14",
"content": "one of the most epic fucking builds i’ve ever seen…^ the profanity helps me express just how awesome this is.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161867",
"author": "mess_maker",
"timestamp": "2010-07-25T00:49:22",
"content": "Bravo on the helmet, that is sweet.p.s. @Zack-0 your english is very good, had you not said anything I wouldn’t have thought you had any reason to apologize. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161869",
"author": "mjrippe",
"timestamp": "2010-07-25T01:04:08",
"content": "Nice f*cking work! This is a true build-it-because-I-want-to hack, the best kind of build IMHO. Really pro quality!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161872",
"author": "Peter",
"timestamp": "2010-07-25T01:20:12",
"content": "That is one of the most beautiful hacks I have ever seen. Lights, shiny gold, LIGHTS, if I had 23,000 (what it’s probably worth) I’d buy it, that is, if he’d even sell it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161873",
"author": "Decius",
"timestamp": "2010-07-25T01:37:50",
"content": "If he has all the molds for the project, I don’t see why he doesn’t build another one to sell. With the quality of the build this thing looks amazing, I wonder how much it cost to make? ;oHe might be onto something :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161874",
"author": "sM10sM20",
"timestamp": "2010-07-25T01:45:43",
"content": "About 5 months back I had the urge to make myself a Daft Punk helmet, didn’t turn out this well, not much else to say…Truly professional work.-sM10sM20",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161877",
"author": "strider_mt2k",
"timestamp": "2010-07-25T02:20:36",
"content": "This made me look these guys up and enjoy their sounds as well.Wow.-all round wow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161878",
"author": "Edward",
"timestamp": "2010-07-25T02:25:53",
"content": "Where can I see the original?Awesome build and results!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161881",
"author": "Digital",
"timestamp": "2010-07-25T02:47:57",
"content": "fistly: give me his paypal address I want to send him some money just for sharing that with us.secondly: He just got a job as a hollywood artist for sure.that was absolutely amazing. no other words to describe it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161886",
"author": "raith",
"timestamp": "2010-07-25T03:22:49",
"content": "@Foxdie you might not want to abbreviate that…it could be taken waaaay out of context.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161887",
"author": "zool",
"timestamp": "2010-07-25T03:43:17",
"content": "while i agree that it’s cool, i wonder why he chose to add the different lights on the bottom and not have an led display in fronti can see not having the display for being able to see out of the helmet but if you’re going for a replica why not make it exactly the same?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161888",
"author": "tikka",
"timestamp": "2010-07-25T03:52:55",
"content": "Incredible!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161903",
"author": "Vonskippy",
"timestamp": "2010-07-25T07:27:07",
"content": "Kid’s today and their hippie music.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161938",
"author": "Pantera4EVR",
"timestamp": "2010-07-25T12:11:16",
"content": "Props for a good build. Respect.However, the underlying roots are another story. The assault on our auditory senses by that mindless genre of no-talent-required ‘music’ (and i use the term very loosely) is, a throw back to the neanderthal cave dwellers.METAL RULES f all of u cissy boy metro-sexuals and your punk club music.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161954",
"author": "fartface",
"timestamp": "2010-07-25T14:29:11",
"content": "A real hack…. Nice!Rockin’ cool build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161964",
"author": "Brennan",
"timestamp": "2010-07-25T15:22:14",
"content": "Sweet hack, but I can’t help think that he could have made the electronics fit inside the helmet. If all you’re doing is controlling LEDs it would be easy to make a custom board and fit it inside the helmet. But that’s something to do for the next build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161965",
"author": "Ben Ryves",
"timestamp": "2010-07-25T15:32:11",
"content": "As much as some people seem to dislike Daft Punk (and, to be honest, I’m one of them) there’s no disputing that this is an extremely impressive piece of work. Excellent!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161967",
"author": "caps",
"timestamp": "2010-07-25T15:44:58",
"content": "…and cue law suit.Anyways, does anyone else think it looks a little big?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161969",
"author": "JDN",
"timestamp": "2010-07-25T15:46:35",
"content": "Very nice indeed.To add to Brennan’s comment, for the next build (or retrofit), SMT LEDs on a flexible PCB would save space and weight, although might be pricy. And use RGB LEDs instead of tinted translucent panels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161971",
"author": "M4CGYV3R",
"timestamp": "2010-07-25T15:49:19",
"content": "@Pantera4EVRHahahahaha! I’m sorry you don’t like or appreciate good music, you ancient metalhead wannabe. Any retard can play a power chord over and over and scream into a microphone. It takes talent to develop melodies and beats and make them fit together.Perhaps when your hearing returns and your neck problems subside you could give something not brain-dead a chance, hm?Troll for a troll.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161981",
"author": "DeadlyFoez",
"timestamp": "2010-07-25T16:34:15",
"content": "Great job on the build. Obviously too a lot of effort and looks perfect.But IMHO, I think it is rather lame and not even close to a hack. IDK WTF daft punk is, but I am certainly staying away from it now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161985",
"author": "Edward",
"timestamp": "2010-07-25T17:18:55",
"content": "@caps“…and cue law suit.”…and cue Daft Punk hiring him",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161987",
"author": "Pn2bade",
"timestamp": "2010-07-25T17:36:40",
"content": "Pretty cool. @1:09 it looks like a Big Daddy lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162018",
"author": "loki",
"timestamp": "2010-07-25T19:39:01",
"content": "This is so epic. Great work, I love the detail and thanks for the vid!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162061",
"author": "emily",
"timestamp": "2010-07-25T23:40:14",
"content": "@RBRat3 He did make more than one because the chroming was a trial-and-error process that ended up eating probably 7 or 8 casts. He also sold several raw casts in order to help pay for our wedding.@Decius It cost a lot; I doubt he really made any money off the commission. He makes stuff like this because it’s fun, but he wouldn’t consider it fun to just churn out the same thing over and over. He explains this at his FAQhere.@zool The lighting design was directly lifted from the Discovery-era helmets, per request of the client (seehere); the LED panel in front was omitted, also per request of the client, in order to retain vision.@Brennan The external box is not just for the arduino but also for the 6 AAs that run the lights. The client preferred having the display controls off the helmet.@caps It does look big because it was scaled to fit his client, who is 6’3″, while Harrison is only about 5’8″.Thanks to everyone else for all the nice comments!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162070",
"author": "hayden",
"timestamp": "2010-07-26T00:47:17",
"content": "If someone was standing in front of me when i saw this, they would be dead because i blew so hard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162073",
"author": "Gregman",
"timestamp": "2010-07-26T01:06:15",
"content": "@caps & @EdwardHe was commissioned by Guy (of Daft Punk) to build this replica helmet. He mentions it several times on his website (if you’re the kind of person who reads those things). He hints that Thomas (the other half of Daft Punk) has asked him to build his helmet as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162074",
"author": "Heatgap/Ho0d0o",
"timestamp": "2010-07-26T01:38:12",
"content": "FUCKING EPIC@!!!11 So sweet! The only thing that makes it better is the high speed build video!! Epic post HaD!! Epic friggin post!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162118",
"author": "Bob Nobody",
"timestamp": "2010-07-26T04:30:50",
"content": "I’m not an arduinon hater. Though, doesn’t it seem odd that he would do such a good job fabricating the helmet, but still use an arduino and have it outside the helmet.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,402.906365
|
||
https://hackaday.com/2010/07/24/adding-mute-to-a-bluetooth-headset/
|
Adding Mute To A Bluetooth Headset
|
Mike Szczys
|
[
"Cellphone Hacks"
] |
[
"bluetooth",
"motorcycle",
"mute",
"spdt"
] |
[Jared] often needs to be on conference calls for work during his motorcycle commute. He’s got a bluetooth headset that cancels noise but it didn’t have a mute feature. He cracked open the speaker and microphone portion of the apparatus but there wasn’t enough room for a switch. The base unit which houses the noise cancelling hardware had plenty of room. He
added a single pole double throw (SPDT) switch
to the positive wire from the microphone, allowing him to disconnect it as a mute function would. He mentions the need to seal the unit with silicone after the hack in order to keep out the elements. We might have opted for a weather-proof switch as well.
This simple hack makes a nice addition to any
Bluetooth projects
you’re working on.
| 25
| 25
|
[
{
"comment_id": "161778",
"author": "JerTheRipper",
"timestamp": "2010-07-24T16:10:49",
"content": "I wish I had a job where I could do conference calls from my motorcycle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161781",
"author": "4104480",
"timestamp": "2010-07-24T17:07:15",
"content": "HE should add some C4 to it as well so he can blow his damb head off on fail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161786",
"author": "Ford",
"timestamp": "2010-07-24T17:28:21",
"content": "I’m pretty sure that switch can be made waterproof, too. There’s a switch company that sells little silicone boots that fit over the top of the switch and thread onto the body of it.Lemme see… here it is: NKK Switches. For example, Digikey # 360-1750-ND",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161790",
"author": "Matt",
"timestamp": "2010-07-24T17:57:58",
"content": "What a good idea. The mute switch will spare the conference call participants from hearing Jared’s death from riding with 50% of his attention on the road.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161815",
"author": "dan",
"timestamp": "2010-07-24T20:04:14",
"content": "Why is it that every comments thread is always peppered with people whinging about safety? It’s not like this guy has invented the concept of radio communication whilst biking. Your comment adds nothing to the article. Life can be dangerous – just shut up and get on with yours.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161820",
"author": "Jack Wood",
"timestamp": "2010-07-24T20:23:46",
"content": "Jared should really find a better way to arrange his morning, before he gets himself or someone else killed.dan, your sociopathy adds even less to this post.Matt and I are actually worried about people’s safety. I don’t know if you or Matt have lost anyone to an impaired driver, but I have, and I’d like to spare other families that pain.http://www.unews.utah.edu/p/?r=062206-1This study and others confirm that talking on a cell phone is as inhibiting to the driver as being intoxicated, and reports of serious and even fatal accidents occurring because of a distracted driver abound.Life being dangerous doesn’t justify doing nothing to stop preventable death. I’m sorry that you don’t find that worth reading, but please stow it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161828",
"author": "Matt",
"timestamp": "2010-07-24T20:54:12",
"content": "There’s the rub. I have to share my life with a guy whose activities increase the danger for those around him.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161833",
"author": "anon",
"timestamp": "2010-07-24T21:17:05",
"content": "Motorcycles are only dangerous for the rider.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161852",
"author": "bward",
"timestamp": "2010-07-24T23:27:12",
"content": "if you add in a bypass cap. you can get rid of that clicking noise when throwing the switch",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161853",
"author": "Waaa",
"timestamp": "2010-07-24T23:32:58",
"content": "All i seem to read on theese comments is WAA WAAAA WAAA someone please think of the children, what if he hurts himself, what if he hurts someone else, OMG CALL THE CYBERPOLICE.Life is full of danger, if your scared of motorcyclists with headsets just dont go outside, theres plenty of things to do inside, like post whingey comments on HaD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161876",
"author": "biozz",
"timestamp": "2010-07-25T02:20:03",
"content": "am i the only one who thinks “DUH!” on this one?do you really need a write up on this one?“add a switch to the microphone” is all you need to say as a general mute button to every single microphone in existence XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161921",
"author": "ino",
"timestamp": "2010-07-25T09:01:50",
"content": "when people will learn that riding is the only thing you should do while on your bike?Anything else is pushing your luck waayyy too far.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161932",
"author": "blue carbuncle",
"timestamp": "2010-07-25T10:59:57",
"content": "Maybe Joe could leave the house earlier and stop in for breakfast somewhere and accept his conference call there. Many of these food eateries also dispense napkins, which are great calculators :) Glad he figured out how to fix a problem and I’ll leave it at that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161941",
"author": "the steven",
"timestamp": "2010-07-25T12:22:59",
"content": "Good idea, might try it, I used the Scala FM on my Nolan 102 when I found out the Nolan kit would be over $300.00 to do the same thing…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161943",
"author": "the Steven",
"timestamp": "2010-07-25T12:46:17",
"content": "It’s still a hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161956",
"author": "fartface",
"timestamp": "2010-07-25T14:43:22",
"content": "First all the idiots that cant understand how to listen and ride at once, That’s why you suck at riding a bike, you cant walk and chew gum.Second, if you have a job where you have conference calls, you CAN do that while riding.. I have the step up of this bluetooth helmet adapter and it has a mute in it already, but this is a great idea.What is stupid is the morons that ride the motorcycle in shorts and a t-shirt (you are just a complete idiot) or wear earbuds while riding. Plug your ears? what dork thinks that is a good idea? These have a speaker that sits near your ears. you can hear perfectly unless someone is screaming in your ears.That’s almost as stupid as the retards that think loud pipes save lives.This guy did a good job, and I have ridden at highway speeds with a composite helmet and the person on the other end cant tell I am on the bike. It works great, I can answer and even dial without taking my attention off the road (because I have an IQ over 80 and can do two things at once like press a button on the side of my helmet and say “call office”) Add in a bonus of that my IQ is high enough to not be a moron and speed and tailgate I end up a safer driver and rider than 90% of the others on the road.The brain dead retards that tailgate cars or speed are the cause of the problems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161973",
"author": "M4CGYV3R",
"timestamp": "2010-07-25T15:55:49",
"content": "So wait…There’s a wired-in base unit on a Bluetooth headset?That seems to sort of defeat the purpose of having a Bluetooth headset at all, no? Wouldn’t it be just as easy to plug your cell into the base unit where you don’t have to hold it as it would be to BT pair it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162174",
"author": "octel",
"timestamp": "2010-07-26T11:13:14",
"content": "@fartfacefailing to walk and chew gum simultaneously does not result in fiery car crashes often involving multiple vehicles and/or pedestrianslow-effort troll, i give it a 5/10",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162213",
"author": "djrussell",
"timestamp": "2010-07-26T14:12:53",
"content": "@ M4CGYV3R, everything you saw there attaches to the helmet. you get to keep your cell safe in a weatherproof pocket or bag.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162348",
"author": "Masta Squidge",
"timestamp": "2010-07-26T21:33:35",
"content": "I am willing to bet that every idiot on here who is crying about this guy talking on the phone while on his bike has never ridden a bike.Also note that motorcyclists, on the whole, are much safer drivers than most people who don’t ride. The reason being that most of us have taken a class on it, and we have to dodge idiots in cars who can’t pay attention with or without the phone.My insurance agent told me that close to 90% of all motorcycle accidents are caused by the person in the 4+ wheeled vehicle, NOT the guy on the bike.And for that matter, who told you clowns that riding a motorcycle is somehow more dangerous or more difficult to do than driving a car?TLDR: Shut up about him using the phone on his motorcycle, I bet this weeks paycheck he is a safer driver than you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162713",
"author": "Shane",
"timestamp": "2010-07-27T21:38:18",
"content": "I highly doubt that he gets alot of breathing though this mic unless the noise cancellation is broken, or he’s just a really heavy breather.I use a scala and haven’t had a problem with that during calls, but I do have that problem with the radio. In some cases with the visor up or vents open it will catch wind enough to cut out the radio.Thanks for the great shots of the insides, I didn’t want to break the weather proofing just to have a look. I want to extend/replace the fm ant with something that works better, maybe a loop around the helmet?The scala is the best bike to bike headset I’ve tried, and bluetooth and radio are just bonus features. Using the scala in multi rider situations helps to make riding safer, and more enjoyable.Most of the people complaining just either don’t get it, or failed their mc course. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162716",
"author": "Shane",
"timestamp": "2010-07-27T21:42:42",
"content": "@M4CGYV3RIts a two piece system,You have a egg like shaped module that contains most of the electronics and controls. You can pull that off the helmet to charge and keep safe.That part clicks into part 2 which is attached to the helmet, it has the mic and external audio input jack.It’s still paired via bt to a phone if needed.Just the mic and module are two parts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163695",
"author": "anon",
"timestamp": "2010-07-30T03:11:07",
"content": "this guy should wake up earlier so he doesnt have to have a conference call while driving on a motorcycle",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165546",
"author": "MayorMike",
"timestamp": "2010-08-04T18:29:54",
"content": "Just want to say thanks to Jared for his parts help with my Bluetooth Handgun project:http://www.wired.com/gadgetlab/2010/08/suicidal-bluetooth-headset-looks-like-gun/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "749326",
"author": "Milo Nisly",
"timestamp": "2012-08-23T08:23:50",
"content": "I am going to bookmark your website for future reference. Keep up the awesome work!.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.10085
|
||
https://hackaday.com/2010/07/24/teensy-credit-card-reader/
|
Teensy Credit Card Reader
|
Mike Szczys
|
[
"classic hacks",
"Peripherals Hacks"
] |
[
"credit card",
"magnetic",
"magstripe",
"reader",
"Teensy"
] |
Here’s a hack that makes business sense. [PT] recalls last year’s HOPE conference when their booth was using a virtual credit card terminal for purchases that required manual entry of card information. This year they’ll have the same virtual terminal but
this magnetic stripe reader
will fill it out automatically.
A magstripe reader (reading only,
no funny business
here) from Mouser grabs data from the card. A Teensy microcontroller board, which identifies itself as a USB keyboard, automatically fills out the virtual terminal from the parsed data. The real question, are his customers comfortable sliding their plastic through a hacked reader?
| 26
| 26
|
[
{
"comment_id": "161751",
"author": "Kirby",
"timestamp": "2010-07-24T13:17:29",
"content": "Are there any magnet based cards left?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161752",
"author": "blue carbuncle",
"timestamp": "2010-07-24T13:37:11",
"content": "Like I’m sticking my credit card in anything that looks like that lol. Other than that, I don’t have too much positive to say for this project or whatever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161753",
"author": "NatureTM",
"timestamp": "2010-07-24T13:50:54",
"content": "Well, since you’re giving them access to your information either way, it boils down to the usual, “do I trust this person/party?”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161754",
"author": "GeekDoc",
"timestamp": "2010-07-24T13:55:09",
"content": "So, basically serial to USB converter.A “keyboard wedge” reader probably would have cost the same as the reader/Teensy combo, but where’s the fun in that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161755",
"author": "PinkFreud",
"timestamp": "2010-07-24T13:57:47",
"content": "As small as the Teensy board is, a slicker hack would have shortened the cable and embedded it inside the card reader, showing only the USB port.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161757",
"author": "GeekDoc",
"timestamp": "2010-07-24T14:01:33",
"content": "Oops. Guess I should read the original story before posting a comment. I see a bit more parsing was needed than just the raw dump from the card.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161761",
"author": "caps",
"timestamp": "2010-07-24T14:23:59",
"content": "Why was this removed from the front page?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161762",
"author": "caps",
"timestamp": "2010-07-24T14:24:34",
"content": "And now it’s back again :S",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161765",
"author": "caps",
"timestamp": "2010-07-24T14:50:38",
"content": "And now it’s gone again. :SS",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161766",
"author": "caps",
"timestamp": "2010-07-24T14:51:10",
"content": "And now it’s back again :SSS. What is going on here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161771",
"author": "Jayson",
"timestamp": "2010-07-24T15:20:14",
"content": "@KirbyYeah California State IDs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161774",
"author": "Spork",
"timestamp": "2010-07-24T15:47:52",
"content": "@JaysonAlong with Credit/Debit cards, security cards for buildings (HID still makes mag stripe cards), and lets not forget laundry/parking meter cards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161777",
"author": "MS3FGX",
"timestamp": "2010-07-24T16:07:10",
"content": "Just for the record, HOPE is every two years, and has already past for 2010. The wording of the post makes it seem that it is an upcoming annual event.As for the project itself, it is clever that they put all of the required key presses in the micro code (I.E. entering Tab to switch between fields), but of course this device is now only good for this single purpose. It seems there are more elegant ways to handle mobile credit card transactions (Square?).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161780",
"author": "Manfre",
"timestamp": "2010-07-24T16:59:21",
"content": "@carbuncle, Why not? They’re a electronics kit company that you would be handing your credit card to them anyway. If you don’t trust a business enough to use your card, then cash is the only safe option. It’s not like it’s attached to a gas pump or atm.@MS3FGX, paying a second credit card processor is never an elegant solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161782",
"author": "indiqq",
"timestamp": "2010-07-24T17:09:55",
"content": "You can buy MSR from ebay < 600$ but its kinda obvious what are these used for lulz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161788",
"author": "Paul",
"timestamp": "2010-07-24T17:42:47",
"content": "Why must every article instantly attract such negativity?What’s up with all the complaining about aesthetics? Why comment that the materials cost the same or more than some fixed function, not easily modified off-the-shelf product?Why even read Hack A Day? Really, why?As far as hacks go, I personally think this one is pretty awesome. Not only does it give access to info that wasn’t possible with the other solution, but it customizes keystrokes so it directly manipulates a web form. How many off-the-shelf products do that?!@MS3FGX: as to being “single purpose”, it’s easily hackable by just editing the code. Keyboard.print(…) Imagine that, hacking things!It also uses Teensy (full disclosure, I’m the guy who designed Teensy and hacked Arduino to do non-serial devices… something that had been repeatedly called impractical and “too difficult” on the Arduino forums), so of course I think the Teensy-factor using the Arduino IDE is pretty awesome too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161793",
"author": "MS3FGX",
"timestamp": "2010-07-24T18:10:26",
"content": "@ManfireThey are paying a service fee to use the virtual credit card terminal already. This device simply saves them from typing in card information manually, it doesn’t magically allow them to process credit card transactions independently.@PaulOr they could have simply used the original USB HID magstripe reader and interpreted the incoming data in software PC-side, involving no modification to the reader at all. Why have to modify the firmware on the device because a field changed on the form you want to fill out? You are going to have to write parsing software either way, so why not do it on the PC where it is more easily modifiable and can work with any HID card reader on the market?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161799",
"author": "Osgeld",
"timestamp": "2010-07-24T18:59:56",
"content": "“What’s up with all the complaining about aesthetics?”what complaining about the aesthetics? what 1 guy said it would be cooler if it were all shoved into 1 case?sounds like your just tooting your high n mighty horn for the sole reason of starting somethingnot every comment is going to be “atta boy!” and if they were we would not have a reason to try harder",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161845",
"author": "M4CGYV3R",
"timestamp": "2010-07-24T22:51:35",
"content": "Pardon me if I don’t step right up to swipe my card at a hacker/tech-head conference using a home made magstripe reader.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161846",
"author": "chango",
"timestamp": "2010-07-24T22:55:43",
"content": "@Paul Thanks for your work on Teensy. It’s my go-to for quick projects and what I like to recommend when someone wants to get their feet wet in embedded.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161858",
"author": "Jamie",
"timestamp": "2010-07-25T00:00:53",
"content": "Most credit card processors offer two rates to reflect different fraud risks: 1) when the merchant has physical possession of the card and swipes it, and 2) “card not present” transactions conducted over the phone and online. The fee for processing physical cards is typically 1.5-2% of the sale price and “card not present” rates are 2.5-3.0%.So, basically this hack allows to pay more for credit card processing than is necessary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161860",
"author": "Shadyman",
"timestamp": "2010-07-25T00:31:09",
"content": "@Jamie: Also, Credit Card processors typically group sellers by volume, giving high-volume sellers a lower rate, like 1.5-2%, while low-volume ones a higher rate, like 2.5-3%.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "178249",
"author": "hevymetaldan",
"timestamp": "2010-09-07T13:57:58",
"content": "Wow, personally I can’t wait until the teensy++ is back in stock, they’re going for $100 on ebay! (addhttp://) cgi.ebay.com/Teensy-USB-Development-Board-/260660298213?pt=LH_DefaultDomain_0&hash=item3cb09081e5@MostofYOU There is a big difference between constructive criticism, and flaming. My last project got flamed up and down, as did the comment pages most other places I posted. I appreciate suggestions for improvment, like fitting it into a case, but on this site and others the community targeted needs to stop with all of the “dude ur dumb” type posts… nice project though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "196560",
"author": "Alexander Mills",
"timestamp": "2010-10-14T02:55:49",
"content": "Uh, Ladyada is a GIRL. Geeze, make better use of your pronouns.“The real question, are his customers comfortable sliding their plastic through a hacked reader?”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "213674",
"author": "kunutherockstar",
"timestamp": "2010-11-17T04:01:10",
"content": "earn it yourself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304004",
"author": "David",
"timestamp": "2011-01-14T02:54:31",
"content": "Although this hack undoubtedly works, it is not compliant with the PCI Data Security Standards for virtual terminals (SAQ C-vt)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.162383
|
||
https://hackaday.com/2010/07/23/20-channel-dmx-controller/
|
20-channel DMX Controller
|
Mike Szczys
|
[
"home hacks"
] |
[
"AVR",
"christmas",
"dmx",
"halloween",
"lights"
] |
[Joshua] shares his details on building this
20-channel DMX controller
. He’s sourced some extension cords to cut up for the complicated wiring project. He plans to drive 120V lights with the system so he’s also using the extension cords to connect a bunch of outlet boxes to the main controller. Inside you’ll find a set of AVR chips ready for your commands. Instead of using jumpers or DIP switches to set their addresses he set them in the firmware and burned a different version to each chip. The key here is writing the address right on the chips to prevent any confusion.
This will be used of Halloween and Christmas displays. We love
Halloween hacks
just about as much as we love
Christmas hacks
, so hit the basement and don’t forget to
share the result of your labors
with us.
| 29
| 27
|
[
{
"comment_id": "161569",
"author": "poiso",
"timestamp": "2010-07-23T21:14:17",
"content": "While cool these things always make me cringe, Those outlet boxes + extension cords makes me question the safety of a setup like this.especially if it is planned on being used outside, or inside.If I was going to use something like this outside I would employ some type of weatherproof outlet boxes and GFCI outlets.this may add some considerable cost to a project like this but when it comes to safety I think it is worth the extra money.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161571",
"author": "Michael",
"timestamp": "2010-07-23T21:16:31",
"content": "This looks kind of crazy, also: no arduino! Also: first post!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161572",
"author": "atrain",
"timestamp": "2010-07-23T21:17:41",
"content": "Nice build. I personally don’t like the use as the ground cable as neutral and the neutral cable being used as a hot. Should have gone to a hardware store and bought a 4 conductor wire. (black-red-white-gnd)Also, would be cool if it supported triac-dimming.And if the site was readable :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161573",
"author": "atrain",
"timestamp": "2010-07-23T21:20:23",
"content": "@poiso:Good call on GFCI. Though, since this this runs off only 2 circuits, might as well put 2 upstream rather than buying a pile of them.But yes, weatherproofed boxes are a great idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161577",
"author": "Dan",
"timestamp": "2010-07-23T21:25:35",
"content": "Am I missing something here? DMX has 512 channels, right? So, is this even DMX? Why not run all the power separate from the controller channels? This seems a little backwards from any professional hardware I’ve used…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161581",
"author": "osgeld",
"timestamp": "2010-07-23T21:36:53",
"content": "“This seems a little backwards from any professional hardware I’ve used…”I bet any professional hardware you have used was not built on the kitchen table eitherGood stuff, and I am not sure what the big deal is about the extension cords, and that short length, take a trip to your local stage before or after shows you see the same thing (although usually bigger boxes and thicker cords to hold those bigger boxes)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161583",
"author": "Pete S",
"timestamp": "2010-07-23T21:43:53",
"content": "I don’t get it 100% either. Normally the DMX controller is the master, for instance a programmable light board or a computer.The DMX interface itself is a serial RS485 multidrop with a slightly odd clock frequency that I can’t remember right now.Anyway to the controller, slaves like DMX dimmer packs and other DMX controllable units would be attached, normally daisy chained, with one in and one out XLR type connector for each unit.Since RS485 can be transmitted over some distance the DMX “slaves” can be placed where needed. The last unit will be terminated with a resistor usually inside an XLR connector.When you are controlling lights for instance with a dimmer pack, the dimmer always lets some current through the light. That because tungsten and halogen lights don’t last long if you turn them completely off and then on repeatedly.So I guess this should really be called a DMX relay and not a DMX controller.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161584",
"author": "GeneralFault",
"timestamp": "2010-07-23T21:44:45",
"content": "Neat and useful project. But the web site is something to behold. Honestly… blue text on a black and green background! Did he learn HTML in 1991 and never return to the web?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161585",
"author": "Braveit1",
"timestamp": "2010-07-23T21:59:31",
"content": "There is an entire website for people who build their own Christmas light controllers.http://doityourselfchristmas.comDMX is one option but there are many more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161587",
"author": "biozz",
"timestamp": "2010-07-23T22:16:25",
"content": "XD HTML programming 101 … never use a background with small random lines and always use text that is highly contrasted to the background XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161591",
"author": "Degats",
"timestamp": "2010-07-23T22:24:03",
"content": "“I bet any professional hardware you have used was not built on the kitchen table either”You’d be amazed….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161594",
"author": "imMute",
"timestamp": "2010-07-23T22:29:00",
"content": "1) If this project even uses DMX, it shouldn’t be labeled as such.– Each channel is either on or off. Not DMX2) He has twice as many relays as he needs– Neutrals can also be bridged together.3) Website is impossible to read.On the plus side1) Nice PCBs2) Shitton of pictures (almost make up for the lack of readable text)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161595",
"author": "Pookey",
"timestamp": "2010-07-23T22:46:25",
"content": "I applaud the built spirit. Some of the execution, however, makes me cringe.Get rid of the extension cord wire. As someone else already said, find some decent four-conductor cable. Most hardware stores have it.Red and blacks are ok for hot.White for neutral.Green for ground ONLY. BTW, make sure you have ground continuity from your outlets all the way back to your source.Get some waterproof outlet boxes.I’ve been told that if you Macguyver something that is not to code, and you end up killing someone or burning your house down, your insurance may not pay up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161621",
"author": "tim",
"timestamp": "2010-07-24T01:49:21",
"content": "i don’t get it ?isn’t DMX for dimming ?i only see relays on the power board",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161638",
"author": "adolf",
"timestamp": "2010-07-24T02:43:35",
"content": "“Not to code”?WTF?No part of the NEC specifically covers strange homebuilt gadgetry that one plugs into a wall outlet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161644",
"author": "matt",
"timestamp": "2010-07-24T02:55:50",
"content": "why even use the extention cords, there only a few feet long, why not just mount all the outlets in a nice box.would make it more portable and easier to use. would be less of a mess to.but I like the work he did, if he added fading and such it could be a powerful tool.how many watts per channel?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161678",
"author": "catzburg",
"timestamp": "2010-07-24T04:16:37",
"content": "Not that I disagree with the 4 wire and ground wire comments, but if this is strictly for Christmas lights then they tend not to have a ground anyway.Also the colours don’t matter, who cares if ground is green, if no one else is going to look at it then you can use whatever wire you want for whatever. Just be consistant",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161688",
"author": "GhettoDuk",
"timestamp": "2010-07-24T04:38:47",
"content": "DMX is an electrical spec and protocol for controlling lights and other stage devices. It is packets of up to 512 8-bit “channels” that a device can interpret in any way. Fog machines and light truss wenches understand DMX these days. A dimmer pack is just one of many types of devices that use the protocol.What this guy built is a switcher or relay pack, not a controller. Looks great. Triac dimming is much more complicated than switching, especially at 20 channels. I think he should have gone for 24 channels to fully utilize 3 dmx channels (24-bits), and he could have used better wiring with fuses, but I bet this box is going to make one awesome Christmas display.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161689",
"author": "Buzzkill",
"timestamp": "2010-07-24T04:39:38",
"content": "Dmx is broken into universes. Each universe has up to 512 channels. A single fixture can use several channels. An inteli-light for example. You have channels for x and y axis, filters, and light control. The diyc site mentioned has been offering plans to build light control systems for several years. I have 96 channels built from the plans at DIYC. Each channel is designed to handle 1-2 amps of lighting. But even at that you can see that the amps can quickly add up. The switch to LEDs has helped immensely though. The systems I have built have worked incredibly well for Christmas and Halloween. A little common sense goes a long way towards keeping the systems safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161734",
"author": "cgmark",
"timestamp": "2010-07-24T10:06:58",
"content": "Cool project. Have to remember to add up total load on all the controlled devices + power on surge currents to pick the right size wire for the main power plug. The two plugs as shown in the photos with that wire size is not enough for 20 outlets unless all outlets are under 1A and even then you may have issues because some circuits have breakers that trip at 15A.Really need something like a 10AWG sized wire for the plug if you plan to have any length to the wire going to the wall outlet.Something else to consider is using opto isolated relay drivers so that if something does go wrong , a relay shorts out for instance, the current will not run back through the setup controlling everything. A part like the 4n25 only cost about 30 cents and could be put on a board in between the wires that go to the relay control . Well worth the time and cost for what it adds.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161735",
"author": "cgmark",
"timestamp": "2010-07-24T10:11:54",
"content": "Something else I just noticed. The relay control board and the 120VAC side are both in the same box that when closed will put them right on top of each others. That is a BAD idea. If anything shorts or a wire pulls out of a screw whatever is connected to that setup controlling it will fry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161739",
"author": "strider_mt2k",
"timestamp": "2010-07-24T10:57:00",
"content": "Oh you KNOW this is backing up into the mains.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161760",
"author": "PinkFreud",
"timestamp": "2010-07-24T14:16:44",
"content": "Please change the title, as this is not a DMX controller, but only a DMX relay board.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161783",
"author": "Mythgarr",
"timestamp": "2010-07-24T17:12:43",
"content": "@catzburg “Also the colours don’t matter, who cares if ground is green”It also doesn’t _REALLY_ matter that you pair up the “right” color wires in a Cat5 cord, or that you use black for positive polarity in your car, or that you use blue for hot water and red for cold, or even that you have personally renamed backslash to “sloppy joe”. None of those things would prevent anything from working as long as you were the only one that ever used, maintained, or created your equipment.Adhering to standards saves you headaches in the long run and in many cases prevents potential safety hazards, but it IS entirely up to you whether you want to use them or not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161904",
"author": "Hip",
"timestamp": "2010-07-25T07:31:36",
"content": "dmx is the perfect protocol for a project like this, and those who think it’s not have no idea about professional lighting control… and should shut their little blogging fingers in the door of their car. Dmx does much more than dimming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161905",
"author": "Hip",
"timestamp": "2010-07-25T07:34:14",
"content": "Oh yeah, and it is a controller… It’s controlling the relays! So dmx controller is an appropriate title, even though this devices does not generate dmx.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "161957",
"author": "mre",
"timestamp": "2010-07-25T14:45:43",
"content": "Nwgative.In DMX, “Controller” specifically refers to a signal generating device. This is an accessory. In particular, “20 channel relay pack”.",
"parent_id": "161905",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "162042",
"author": "Hip",
"timestamp": "2010-07-25T21:41:56",
"content": "Yeah well my boss is a controller and his title is director…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "162158",
"author": "mre",
"timestamp": "2010-07-26T09:51:56",
"content": "Hah More of social engineering problem (>_<)",
"parent_id": "162042",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,403.372038
|
||
https://hackaday.com/2010/07/23/spirograph-generator/
|
Spirograph Generator
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"propeller",
"spirograph",
"stepper"
] |
The
Agnewgraph I
can turn out a pretty nice Spirograph drawing. Instead of relying on meticulously acurate CNC hardware, it uses a Spirograph stencil similiar to
that business card we’re so fond of
. The key to the [Mpark’s] design is an analog joystick which is attached to the pen. As the pen follows the plastic guide around, a Propeller microcontroller calculates the angle of travel based on that joystick. These measurements are used to decide how to move the two stepper motors that provide horizontal and vertical motion to the frame. We’ve attached a video after the break just in case our rough description didn’t do it for you.
[youtube=http://www.youtube.com/watch?v=U2KsvADOGDw]
| 8
| 8
|
[
{
"comment_id": "161558",
"author": "compukidmike",
"timestamp": "2010-07-23T20:33:00",
"content": "Nice work, even if it is excruciatingly slow! I have to wonder if the control algorithm can be sped up, or if it’s a limitation of the motors chosen, or if it has a tendency to make mistakes if it goes faster. Regardless, it’s a very unique control method which seems to work well. Now to figure out what else to use it in…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161560",
"author": "Concino",
"timestamp": "2010-07-23T20:41:31",
"content": "There is gotta be an easier way to do this. How about a bot with 4 unidirectional wheels standing on top of the Spirograph generator with same pen holding mechanism?I don’t know why but it seems so overly complicated to me at first look.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161561",
"author": "AP",
"timestamp": "2010-07-23T20:43:51",
"content": "That’s extremely clever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161576",
"author": "Colin",
"timestamp": "2010-07-23T21:25:25",
"content": "I agree, way too complicated for it’s purpose. Think of how you used to draw them as a kid, you sorta just made a circle with your hand and let the pen go where it wanted (following the “gear”) so why wouldn’t a robot just copy the same thing?All in all, though, cool nonetheless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161582",
"author": "Andy",
"timestamp": "2010-07-23T21:42:06",
"content": "This is really ghetto with the string and rubber-bands, but still, nice work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161612",
"author": "mpark",
"timestamp": "2010-07-24T00:49:08",
"content": "“you sorta just made a circle with your hand and let the pen go where it wanted”—well, that’s pretty much what Agnewgraph does. But you have to be able to follow the pen and adjust your circle. It’s a little harder than I think you think it is.Can’t argue with the “ghetto” comment though :) Hey, it’s a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161942",
"author": "Maya Posch",
"timestamp": "2010-07-25T12:26:14",
"content": "I have the feeling that this robot may be better at Spiro than I was in the past. I still have nightmares of slipping out of the proper drawing pattern and having my figure screwed up :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162473",
"author": "Peter",
"timestamp": "2010-07-27T06:21:26",
"content": "Nice. But does it have to resign from the office of vice-president due to bribes and tax evasion, only to have the rest of the administration crumble under an unrelated scandal a year later?Should be a feature in the next release, I think.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.308735
|
||
https://hackaday.com/2010/07/23/terminal-node-controller-in-a-router/
|
Terminal Node Controller In A Router
|
Mike Szczys
|
[
"Radio Hacks",
"Wireless Hacks"
] |
[
"APRS",
"dlink",
"dls-502t",
"radio",
"terminal node controller",
"tnc"
] |
[Andrew] used
a DSL router to make his own Terminal Node Controller
. This will become part of an
APRS-IS
network, an Internet-based network built by amateur radio operators. The router used here is a Dlink DSL-502T with an AVR based TNC module attached to the serial port header. The phone line connector and its accompanying hardware have been removed to make room for the TNC module, which is supplied with 12V via that red wire. When the router boots up it sends data to the serial port header so the firmware on the TNC needed some tweaking to accommodate this (yay for open source).
Want some more APRS goodness? Check out this
AVR APRS tracker
.
| 17
| 17
|
[
{
"comment_id": "161523",
"author": "andrew",
"timestamp": "2010-07-23T17:37:30",
"content": "this is awesome! i love amateur radio, it seems like such an underutilized area these days.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161528",
"author": "hpux735",
"timestamp": "2010-07-23T17:51:22",
"content": "WOOOOOO!!!!!HAM RADIO HACK! I love it, keep ’em coming!To the roots of electronics hacking!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161531",
"author": "Brad Hein",
"timestamp": "2010-07-23T18:00:25",
"content": "Bravo! Bravo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161539",
"author": "fartface",
"timestamp": "2010-07-23T18:30:29",
"content": "not new… Lots of guys have done this. It’s been a atricle in ARRL 4 years ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161551",
"author": "M4CGYV3R",
"timestamp": "2010-07-23T19:43:31",
"content": "Now that’s a great mod. Wish I understood how APRS worked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161556",
"author": "Shadyman",
"timestamp": "2010-07-23T20:10:30",
"content": "@M4CGYV3R: Think of APRS as text messaging over a mesh network.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161570",
"author": "WA3FKG",
"timestamp": "2010-07-23T21:16:00",
"content": "Think of APRS as twitter without wires. It the network gets built out sufficiently it could be a real asset for both amateur radio and for the community when emergency communications are needed.It also can act as an automatic position reporting system and that is what lots of hams use it for but it was not the intent of the guy who invented it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161580",
"author": "Leigh",
"timestamp": "2010-07-23T21:34:28",
"content": "Here’s one from a few years ago in an WRT54G:http://www.dimebank.com/cak/k6dbg/k6dbg_igate.htmlAnd shown at the 2009 SF Maker Faire:http://www.youtube.com/watch?v=VZS0bdYmtik",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161599",
"author": "hpux735",
"timestamp": "2010-07-23T23:43:29",
"content": "@fartface If this site required only new hacks, we’d never see another nixie tube or LED hack. I’m not saying that is a *bad* thing, but — there would almost never be any content!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161705",
"author": "JAQ",
"timestamp": "2010-07-24T05:51:55",
"content": "Agree there is nothing really new here but for those who have access to DSL-502T’s and want to build IGates all the detail on other blog including how to build the OpenWRT images might be useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161738",
"author": "cgmark",
"timestamp": "2010-07-24T10:44:44",
"content": "Nice to see that the hams are still at it.I remember using RTTY back in the 80’s.RTTY was a way computers could communicate using a serial interface using amateur radio . Wireless networking years before the internet. Sending text messages back and forth over a distance of 5000 miles was pretty awesome then and still is now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161740",
"author": "strider_mt2k",
"timestamp": "2010-07-24T10:58:36",
"content": "Amateur Radio ROCKS!73 DE N2NLQ!Nice work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161750",
"author": "Shawn",
"timestamp": "2010-07-24T13:14:50",
"content": "This is awesome. Amateur radio is such a wonderful tool for experimentation. I hope that posts like this will bring more people to the hobby.Amateur radio provides such a vast area for experimentation and hacking that it is suprising that I don’t see more of us taking advantage. It really is sad.Good job guys.73 KJ4KNW",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161882",
"author": "NrussBucket",
"timestamp": "2010-07-25T02:54:45",
"content": "I wish i had my Grandfathers old ham radio this look like a wonderful way to communicate with a computer from rural camp grounds thanks for the post guys ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162262",
"author": "asheets",
"timestamp": "2010-07-26T17:18:04",
"content": "I’m a new ham, and I wish I could find a nice how-to document for APRS.73 de kd0gzj",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162761",
"author": "Leigh",
"timestamp": "2010-07-27T23:27:24",
"content": "@asheets what would you like to do with APRS?There’s multiple starting points.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164943",
"author": "asheets",
"timestamp": "2010-08-02T20:42:39",
"content": "@Leigh — I found a “Homer” to help me out. The 1st thing I’m going to do is set up an inbound i-Gate. Looks like I won’t need the TNC, since I’ve found several pieces of code that use the soundcard as a decent substitute. The setup will go well with my already-running 10M propagation beacon.Looks like this will be a good complement to my CWOP, just as soon as I can get my weather station fixed and calibrated again.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.423974
|
||
https://hackaday.com/2010/07/23/a-bicycle-build-for-2-0/
|
A Bicycle Build For… 2.0
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"bicycle",
"electric",
"kinetic",
"tandem"
] |
Here’s
an interesting way to fill the second seat on your tandem
bicycle. It seems no one ever wants to be
the stoker
, so this gentleman decided to
build
his riding partner. JouleS powers the bicycle from the back using the same motions a human would. It’s not the easiest way to make an electric bicycle but
the mechanics that went into it
are quite beautiful. See the old boy pedaling away after the beak.
[youtube=http://www.youtube.com/watch?v=HcW-VzpgcE8]
[Thanks Mowcius]
| 24
| 24
|
[
{
"comment_id": "161490",
"author": "Wraith",
"timestamp": "2010-07-23T15:36:02",
"content": "While I can appreciate the work and engineering that went into this, I think I’d rather just pick up a stokemonkey. Plus you wouldn’t need the training wheels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161495",
"author": "Brennan",
"timestamp": "2010-07-23T15:51:45",
"content": "Wow, that’s a really cool and original concept. The motion is shockingly fluid. He must get some crazy attention going down the block with that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161499",
"author": "fartface",
"timestamp": "2010-07-23T15:59:59",
"content": "The cool things you can make when you have unrestricted access to a plasma/waterjet/laser cutter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161502",
"author": "redbeard",
"timestamp": "2010-07-23T16:08:18",
"content": "daisy bell. perfect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161503",
"author": "biozz",
"timestamp": "2010-07-23T16:09:28",
"content": "any one else find this kinda’ sad? XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161505",
"author": "Garret",
"timestamp": "2010-07-23T16:12:46",
"content": "wat",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161506",
"author": "Mike",
"timestamp": "2010-07-23T16:17:55",
"content": "@biozz: At first I thought “That’s a pretty sweet idea and build” but after watching the video of a man slowly riding a tandem bicycle with a robot, I couldn’t help but think it is a little sad!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161509",
"author": "Itwork4me",
"timestamp": "2010-07-23T16:30:24",
"content": "He’s obviously not interested in taking anyone back to his pad…on that note. Contact the RealDoll company and see if they’ll hook ya up with some skins…then you could do the naked bicycle run and have them all play ‘Bicycle Race’, by Queen…I want to ride my bicycle!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161513",
"author": "greenyooper",
"timestamp": "2010-07-23T16:49:22",
"content": "Unique idea, nice execution – definitely worthy of HAD. Needs to crank up the speed and lose the training wheels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161515",
"author": "Vonskippy",
"timestamp": "2010-07-23T17:05:16",
"content": "Neat – but hugely inefficient. And the kiddie wheels have to go.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161516",
"author": "nanomonkey",
"timestamp": "2010-07-23T17:08:36",
"content": "I personally enjoy this one better:http://www.youtube.com/watch?v=z6W7SLpdNaUA burning rider on the back of your tandem tends to make you ride faster.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161517",
"author": "zerth",
"timestamp": "2010-07-23T17:09:47",
"content": "The things people will do to get in the carpool lane…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161524",
"author": "kristian",
"timestamp": "2010-07-23T17:43:05",
"content": "it looks like it would really limit the first rider tho, since you can’t pedal faster than the bot. anyone else think that this would be a good day for a CVT? it just needs some way for the second rider to add power to the drive train at any speed. then you could lose the training wheels :Por, on the other hand, build another wooden person on the front that steers and leaves the pedaling to the guy in the back :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161544",
"author": "Bryan",
"timestamp": "2010-07-23T18:58:20",
"content": "while this is a fascinating engineering and machining project, that is a whole lot of 1/4 inch aluminum. the robot rider probably set the center of gravity much higher and further back making it impossible to balance without training wheels. hell if hes spending that much on aluminum why not shell out for some carbon-fiber-balsa composite board, or at least machine some strategic holes to reduce weight. otherwise its still pretty cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161547",
"author": "Eric",
"timestamp": "2010-07-23T19:25:42",
"content": "I find it unfortunate that the wording of the article leads us to believe that the man has no riding partner and that is the reason for this build. SPECULATION.This is art, and it is amazing. It just needs a speed controller, and for the training wheels, maybe some that flip up like on that Swiss motorcycle thingamabob. EcoMobile I think.http://www.youtube.com/watch?v=VbdkZB9-Sd4<–that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161548",
"author": "Lucky",
"timestamp": "2010-07-23T19:28:01",
"content": "Being that this hack is not about efficiency but, rather “because I can” I think it’s great. Totally impractical, inefficient and uneconomical but, beautifully executed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161553",
"author": "M4CGYV3R",
"timestamp": "2010-07-23T19:53:16",
"content": "I see one video but for the life of me can’t find one after a beak. Am I missing a bird somewhere?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161566",
"author": "LWATCDR",
"timestamp": "2010-07-23T21:02:26",
"content": "From a practical point of view this is dumb as a box or rocks. From a hack/art point of view it is just a little short of brilliant!The only way it could be any better IHMO would be if the robot was made of brass and was steam powered!Over all I would give it a 9.5 on the hack scale.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161600",
"author": "Hirudinea",
"timestamp": "2010-07-23T23:51:11",
"content": "Clever, well executed and, frankly, a little bit creapy, I givbe it a 12 out of 10!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161702",
"author": "Tom",
"timestamp": "2010-07-24T05:28:36",
"content": "A higher center of gravity actually makes a bike easier to balance, because it doesn’t fall over as quickly so you have more time to steer the wheels back under the center of gravity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161722",
"author": "BalrogBonanza",
"timestamp": "2010-07-24T07:47:52",
"content": "There was a guy in my town who built one of these a few years back out of mannequin parts, but his didn’t supply power. it just looked cool and moved physically to match the front seat rider’s movements.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161736",
"author": "John Burton",
"timestamp": "2010-07-24T10:22:30",
"content": "Completely pointless – but a really nice work of art :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161764",
"author": "davo",
"timestamp": "2010-07-24T14:35:27",
"content": "lol, i like the engineering, but its pointless",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162328",
"author": "Chris",
"timestamp": "2010-07-26T20:25:32",
"content": "Beautiful and very impressively designed to be so smooth.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.541819
|
||
https://hackaday.com/2010/07/22/all-thats-needed-is-a-retro-paintjob-minimame/
|
All That’s Needed Is A Retro Paintjob, MiniMAME
|
Jakob Griffith
|
[
"home entertainment hacks"
] |
[
"cabinet",
"fun",
"game",
"light",
"mame",
"mini",
"netbook"
] |
[Tim’s] miniMAME
‘s construction follows the “light and cheap” approach, using foam core board and hot glue. Sure it won’t last a nuclear attack, but at least it’s light enough to carry to a friend’s house.
With a removable netbook at the core, CCFLs, speakers, trackball, and mini arcade fighting stick,
the project
completely surpassed our expectations. For those looking to
build a miniMAME
, [Tim] includes lots of pictures, details, and plans allowing anyone to make their own in about an afternoon.
| 22
| 22
|
[
{
"comment_id": "161381",
"author": "Paul",
"timestamp": "2010-07-23T01:56:35",
"content": "love it :)it makes Mame cabinets alot more accessible, not to mention that I own that exact same netbooknice work cutting an acrylic cover for the ‘control deck’, makes a big difference although cutting in acrylic accurately can be annoying/hard",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161388",
"author": "Decius",
"timestamp": "2010-07-23T03:35:49",
"content": "@Paulyes indeed.Props to the build!. Retro gaming will never die :o",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161389",
"author": "kirov",
"timestamp": "2010-07-23T03:37:05",
"content": "hackaday, why must you keep posting these miniature arcade cabinets? you’ve featured at least a dozen before, they aren’t functional and are ugly as sin.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161392",
"author": "m1ndtr1p",
"timestamp": "2010-07-23T03:43:47",
"content": "@kirovThey sure seem functional to me…You could always, you know, not bother clicking on the article if you’re not interested in it. That’s usually what people with at least a little common sense do when they’re not interested in something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161395",
"author": "Doug",
"timestamp": "2010-07-23T03:46:33",
"content": "Cool Hack, I dig the pictures of each step. I usually forget to take pictures of the progression in my own projects.When did Hackaday pick up so many complainers? Egads, and the editors thought they were doing something wrong… It’s all in the commentors :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161400",
"author": "Osgeld",
"timestamp": "2010-07-23T04:32:15",
"content": "Ok I love the entire idea of it but for your foam boarders out in the world, there is a better solutionfor a few bucks at your local big box hardware store you can get fine tooth hand saws, or even coping saws, these tools will last a lifetime if not abused, and blades are cheapget some 1×1 or 1×2 pine stock for framework, you will burn through it like nothing by hand poweralso while your there scope out the super thin plywood paneling, if you cant find something you want to hand saw with lazy arse effort check out your craft store for balsa woodits stronger, finishes nicer and holds up better over time, with minimal investment in inexpensive hand tools",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161427",
"author": "Glen",
"timestamp": "2010-07-23T07:43:39",
"content": "Vey nice build and a great way to repurpose a netbook (and not destroy it in the process)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161428",
"author": "Punkguyta",
"timestamp": "2010-07-23T07:48:25",
"content": "my gf’s bro owns that exact same netbook two! LOL I have a lenovo netbook, it pwns all of you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161438",
"author": "strider_mt2k",
"timestamp": "2010-07-23T09:31:00",
"content": "I use my netbook for retro gaming sometimes too.This is pretty nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161454",
"author": "fartface",
"timestamp": "2010-07-23T11:52:08",
"content": "Guys, stop building out of foam board. go to a sign shop and get the stuff they use. It’s easy to bend with a hairdryer really easy to cut and is 8000X stronger and durable. It’s like foamboard but made of plastic. works GREAT.Go past the paper mockup stages and build it in something that will last more than 30 minutes. You will suddenly become a uber haxor instead of staying in the newbie category.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161474",
"author": "M4CGYV3R",
"timestamp": "2010-07-23T13:45:58",
"content": "Yeah, take THAT iPad arcade. You know where to stick it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161481",
"author": "timthegeek",
"timestamp": "2010-07-23T15:04:12",
"content": "Signshop material, you mean Coroplast? I’m gonna build a kayak outta that stuff next. It wasnt appropriate for this build. This is a mockup of one that will be cnc’d from acrylic or polycarbonate, thus the foamcore was cheap and available. Walmart @ 12:30AM.. lol try and find an open sign shop wher you really need an extra piece to finish.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161487",
"author": "Whatnot",
"timestamp": "2010-07-23T15:26:38",
"content": "No offense but I think hackaday might be overdoing the articles on retro, I don’t mind an occasional thing on it but it seem like 25% is on retro, 35%+ if you count nixie tubes :)And is that what technology and hacks are about? Retro?But if people really like it then so be it, I for me like it in moderation and not quite so much of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161494",
"author": "timthegeek",
"timestamp": "2010-07-23T15:48:54",
"content": "IDK about retro, netbooks have only been around for a few years. As far as hacks.. I have been hardware hacking since 1988 (i’m a F.O.B) I have always though of hacks as being a way of modifying something to suit a purpose for which it was not designed. Or taking something which does a little and modifying it so it does alot more or compares/serves purpose of a more expensive/capable item.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161529",
"author": "Brennan",
"timestamp": "2010-07-23T17:52:57",
"content": "@PunkguytaSorry man, but I’m sure my netbook beats yours. MSI Wind U100 with 2GB RAM, Atom CPU overclocked to 2GHz and GMA graphics overclocked, 500GB 5400 rpm hard drive, linux-compatible wi-fi card, set up to dual boot Crunchbang linux and Windows 7, and a Windows XP virtual machine installed on top of #! so I don’t have to restart to run windows programs. Booyah.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161530",
"author": "Heatgap/Ho0d0o",
"timestamp": "2010-07-23T17:58:39",
"content": "I don’t think your overdoing the retro type articles at all. I love them and so do many of us. You give us a pretty good mix regardless.That said I’m liking this design because they weren’t afraid to mount a keyboard for added input help. When your going for accuracy on an arcade box the keyboard should be left out but when your going for fun it’s helpful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161532",
"author": "Heatgap/Ho0d0o",
"timestamp": "2010-07-23T18:00:26",
"content": "Many of us have that same exact Acer Aspire One. They are very handy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161534",
"author": "timthegeek",
"timestamp": "2010-07-23T18:13:24",
"content": "@ Brennan – No need to apologize, I have a laptop with great specs. Not to worried about being out done with my netbook, which cost me a total of $50 bcuz i repaired it. I bet my car is faster than your tho. lol. I can also pee further.lol j/k mods",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161535",
"author": "timthegeek",
"timestamp": "2010-07-23T18:14:27",
"content": "@ Punkguyta – sorry that previous comment meant for another.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161541",
"author": "timthegeek",
"timestamp": "2010-07-23T18:44:18",
"content": "OK, so we all love our netbooks :) I first used this one (with a broken keyboard and lcd) for my WHS (Windows Home Server)with (2) 1TB external drives. Worked quite well for all 120 days of the trial :)This is my 2nd Acer Aspire One, my other one is tucked away for safety.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161543",
"author": "jjrh",
"timestamp": "2010-07-23T18:49:19",
"content": "I dig the idea of using one of those mini thumb keyboards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161770",
"author": "Brennan",
"timestamp": "2010-07-24T15:08:01",
"content": "@timthegeekI wasn’t talking to you, but yeah, I bet you can pee further than me. Congratulations!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.482644
|
||
https://hackaday.com/2010/07/22/release-the-kraken-open-source-gsm-cracking-tool-released/
|
Release The Kraken: Open Source GSM Cracking Tool Released.
|
Caleb Kraft
|
[
"Cellphone Hacks",
"Security Hacks"
] |
[
"cell",
"gsm",
"karaken",
"nol"
] |
Open source GSM cracking software called “Kraken” has been
released into the wild
. You may recognize some of the information from back in December when we announced that they had
cracked GSM encryption
. Well, now you can participate as well. You’ll need a pretty beefy Linux machine and some patience. They say that an easier GUI and support for GPU processing is coming in the near future.
[Thanks Eliot Via
Slashdot
and
PCWorld
]
| 30
| 28
|
[
{
"comment_id": "161310",
"author": "João Pedro Pereira",
"timestamp": "2010-07-22T20:09:50",
"content": "Excelent news, I’ll try to give my contribute to the cause !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161312",
"author": "xorpunk",
"timestamp": "2010-07-22T20:33:43",
"content": "It’s brute forcing..still",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161320",
"author": "D_",
"timestamp": "2010-07-22T21:10:38",
"content": "Not like the old days of mobile telephones is it? All that was needed to listen on the IMTS system was the standard radio scanner. Listening in was fun to do at first, but boring after a while. The only ones that had the phone around here where oil producers ans oilfield service companies. Few others just justify the monthly service charge and aroused a $1 per minute use charge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161335",
"author": "girrrrrrr2",
"timestamp": "2010-07-22T22:07:43",
"content": "I can help out, just tell me what I can do to contribute to the cause!I can’t test anything out on a phone or something because I have Verizon… but if you need me to run some code I can certainly do that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161346",
"author": "redbeard",
"timestamp": "2010-07-22T22:41:18",
"content": "xorpunk, not brute force, rainbow tables.that being said the talk that Chris Paget is going to be going on GSM decryption through a MitM vector looks to be quite interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161347",
"author": "xeracy",
"timestamp": "2010-07-22T22:43:26",
"content": "2TB of disk space? I assume that’s for the rainbow table storage?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161348",
"author": "sam",
"timestamp": "2010-07-22T22:47:08",
"content": "at the risk of sounding stupid, what can you do with this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161349",
"author": "xeracy",
"timestamp": "2010-07-22T22:47:12",
"content": "http://lists.lists.reflextor.com/pipermail/a51/2010-June/000657.html2tb isnt exactly Bittorrent friendly, so if you want the tables, you have to physically copy them. anyone headed to norway?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161350",
"author": "xorpunk",
"timestamp": "2010-07-22T22:48:58",
"content": "@redbeard: very little difference..one is a database based on key-space and the other is sequentially generated data both go through the same protocol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161368",
"author": "jonored",
"timestamp": "2010-07-23T00:35:36",
"content": "@xorpunk – there’s actually quite a bit of difference. While yes, both involve brute-force of the key space, rainbow tables do that brute-force /once/, and from then on you (approximately, details vary) look up a fragment of the ciphertext in the table, and it gives you a short list of possible keys, rather than simply having you run through the full list. In the extreme case, you’d look up the ciphertext and get exactly the plaintext out, but the rainbow table technique lets you do a time/space tradeoff to tune the search to available hardware. Looks like this guy has it to where a reasonably strong, four-core machine can crack it in a minute and a half – that’s no exhaustive search of the keyspace, and it’s just a strong computer and couple hundred dollars of disk. Time to bump the search space, looks like, or fix the flaws making rainbow attacks applicable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161370",
"author": "Matt downer",
"timestamp": "2010-07-23T00:41:06",
"content": "Gotto agree with the brute force comment. But it’s still very exciting news! I can see this popping up at the next hackers conf.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161377",
"author": "Grayda",
"timestamp": "2010-07-23T01:15:56",
"content": "About 7-8 years ago, I got my first mobile phone. An Ericsson T-somethingorother with Optus Prepaid. One night while at my friend’s house, we called the Optus “Check your balance” number repeatedly (about 10 times a minute). Eventually the system jammed and crashed. When we called again, we could hear one side of a person’s conversation. We were able to do this about half a dozen times until they fixed it.GSM cracking? Who needs it? I did the ol’ “buffer overflow” attack and listened to a woman talking about having tomato soup with crackers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161378",
"author": "heimer",
"timestamp": "2010-07-23T01:20:35",
"content": "Believe it or not lot of people beyond gov/mil have already axs to such a device for cracking gsm beyond that axs to telcos internal network so cracking doesnt even required.This is just another good example for that many technologies which does not available for the open, is available for the people with money. Big deal a kid made a hack what exist since decades for others…You should build a new stealth fighter prototype then u just realize lockhead built 10times better back in the 80’s so much about this…And yes it gets boring listening others phone conversations for sure not to mention you wont hear anything interesting or make money out of this. Phreaking is D E A D.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161379",
"author": "xorpunk",
"timestamp": "2010-07-23T01:34:33",
"content": "I won’t go into details, but I speak from experience, when you streamline communications monitoring you’ll be bored to death. Unless you’re a ‘carder’.Yes I’m being a downer, I’m sure soda pop perky degenerates from suburbia will sensationalize all this without even understanding it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161384",
"author": "anon",
"timestamp": "2010-07-23T03:04:51",
"content": "And I thought CDMA was a bad idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161387",
"author": "vash_sin",
"timestamp": "2010-07-23T03:24:16",
"content": "com on now why don’t you guys do a set on the best opensorced mobile phones out there? WEBOS phones such as palm pre and palm pixi? These are multi tasking deamons! Work loke androind I phone and linux server wrapped up in one neet, eficiant package. Hell theywill have web os slates coming up in a few months! Again this phone runs on LINUX! Can be hacked imto almost OutOfTheBox! And all iphone apps (most android and BB apps as wel) can be ported over to it in matter of hours! Hell gameboy andvanced and PsP games can be pirted. It even turns this page into an ap >.<",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161396",
"author": "Rachel",
"timestamp": "2010-07-23T03:52:13",
"content": "“2tb isn’t exactly Bittorrent friendly”This raises an interesting possibility of using a distributed hash table…of hashes. Individuals store a gig or so of data, which is accessed dynamically by the network. This system could work very well for rainbow tables. The actual data payload is very tiny since users only need 128 bits per hash.2TB spread over thousands of computers is next to nothing, and makes tracking and prosecuting users very difficult.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161468",
"author": "Mr_Bishop",
"timestamp": "2010-07-23T13:09:08",
"content": "@ vash_sin; you clearly dont understand the point of this software; or for that matter the use of proper grammer and how to spell (or atleast use spell check). And what the hell would Gameboy’s and PSP’s have to do with cellular technology?@ Heimer, the reason the Government has access to this technology is because all service providers have to give them access to there networks; they don’t need to crack GSM protocols, and besides the point isn’t so the government can use it its for colleges, research groups,hackers, and tinkerers and you know what if someone designed a stealth plane that actually works I would be damn glad if they posted the designs; then again it’s very likely they would get taken down quickly.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "591213",
"author": "Drik",
"timestamp": "2012-02-28T20:40:30",
"content": "“or for that matter the use of proper grammer and how to spell (or atleast use spell check).”Another guy pointed out your misuse of “their” but I’d like to point out how you suggested a spell check while misspelling grammar. it’s pretty funny. loser.",
"parent_id": "161468",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161484",
"author": "marvin",
"timestamp": "2010-07-23T15:19:03",
"content": "@Mr_Bishop: When hurling insults about grammar be sure to do it right yourself:“…access to there networks…”IT’S “THEIR”This stupid mistake makes me cringe everytime I have to witness it…Dammit you native speakers get “there, their, they’re” right! It isn’t too hard, you know!ok. WTF are all these comments about “downloading 2GB” and “distribute data over many internet machines”??First: The railbow tables are generated by the kraken itself.Second: You use raw HDs for key storage because of low latency and fast access. So WTF do you want with a distributed internet table?!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161493",
"author": "xorpunk",
"timestamp": "2010-07-23T15:45:17",
"content": "@marvin:can you post links to some papers on “railbow” tables?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161500",
"author": "cknopp",
"timestamp": "2010-07-23T16:02:21",
"content": "Maybe I’m more interested in seeing what the speed up is after porting to OpenCL???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161514",
"author": "Mr_Bishop",
"timestamp": "2010-07-23T16:59:58",
"content": "@Marvin: Thank you I always get the there,their,and they’re(s) a bit mixed up; the last is fairly obvious but alas public education failed me; But I wasn’t hurling insults any more then you were (at least I didn’t take it as a insult). I only wish I had the hardware to try this out; I would love to hack into my moms cell (But I think it may be CDMA, its a crappy Kroger prepaid) or one of my brothers, sisters, ect just to play pranks on them; I know its childish but dammit nerdy childish pranks are the only ones worth doing.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "591216",
"author": "Drik",
"timestamp": "2012-02-28T20:42:00",
"content": "“; But I wasn’t hurling insults any more then you were (at least I didn’t take it as a insult)”than*hahawow how dare you act a grammar nazi? jeez you’re douche.",
"parent_id": "161514",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161527",
"author": "marvin",
"timestamp": "2010-07-23T17:50:01",
"content": "@xorpunk: Touché! :)Well, when you search google for “railbow tables” the wikipedia article for “rainbow tables” shows up at the top :DAnd this was a typo, not faulty grammar@Mr_Bishop: I think it was funny :) Just kidding :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161567",
"author": "haineux",
"timestamp": "2010-07-23T21:05:19",
"content": "What this “crack” does is let people listen in on your cell phone conversations. Nothing else.You might as well go to a telephone company routing box outside an apartment building, break the locks, and attach a “butt set” at random. (It’ll help if you drive a panel van with a logo, and wear a jumpsuit.)The government/police can already listen in (at a telephone company building, not over the air).I fail to see any way that this is “excellent.” It’s just plain thuggish spying.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161598",
"author": "Daedalus",
"timestamp": "2010-07-23T23:25:13",
"content": "Hi people, what about airprobe:https://svn.berlin.ccc.de/projects/airprobe/It has been in the net for a while.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164053",
"author": "CrawLeR",
"timestamp": "2010-07-31T01:52:48",
"content": "I hope Nokia N900 will be supported at least to use it for snooping the data. Even that old crap nokia 3360 worked. I went through a great trouble to get my hands on one of those plus data cable for it then I lost it lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "205914",
"author": "lost?",
"timestamp": "2010-10-31T19:04:15",
"content": "Ok, so this is a n00b question, but I thought this would be a program one can download and use to generate a rainbow table, no? I understand the fella in norway generated the tables himself and the link provides how to, but how can one do this with out the program?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2983137",
"author": "FizzleBangPOP",
"timestamp": "2016-04-09T07:44:26",
"content": "This is remarkably similar to the WPA/WPA2 rainbow tables.I wonder if it would be worth making some 3TB drives (easy to get, cheap too at £47 apiece for budget externals) and preloading them with all the goodies for folks to use.Obviously with a disclaimer involving the phrase “I solemnly swear that I am up to no good” to unlock the drive :-)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.644974
|
||
https://hackaday.com/2010/07/22/making-mobile-audio-work-at-home/
|
Making Mobile Audio Work At Home
|
Mike Szczys
|
[
"home entertainment hacks"
] |
[
"amp",
"amplifier",
"atx",
"psu",
"volvo"
] |
[Nikita] made a great find while cleaning out his garage: a set of audio amplifiers from a 1986 Volvo. After a bit of testing, he dislodged a stuck relay and set out to
use these amps for a home audio system
. He grabbed some left over brackets from his TV mount and used them as rail mounts. On the back he wired standard speaker connectors and RCA connectors to the wiring harness for the amplifiers. The final aspect is powering up the device, for which he used his ATX psu previously modified as a bench supply. 130-Watts of power for the cost of a few connectors.
We surprise to find we haven’t covered this common ATX bench-supply conversion before. What we have seen is
an adapter to use one as a bench supply
.
| 45
| 44
|
[
{
"comment_id": "161265",
"author": "jh",
"timestamp": "2010-07-22T18:06:26",
"content": "Old AT power supplies are even easier to use for this… no adapters needed for the power switch. Just wire up a molex to your power and grounds and plug into the power supply.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161270",
"author": "bikegeek",
"timestamp": "2010-07-22T18:20:45",
"content": "Hmmm… I should have thought of this… now I have a purpose for my old McIntosh amp from my car audio days.My dreams of a kick-ass car audio systems were dashed when my son came along… don’t need 1000W of clean power to play rocknocerous.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161271",
"author": "Ken",
"timestamp": "2010-07-22T18:21:03",
"content": "I’ve used a car radio powered from a power supply in my garage for years, have one setup for the hot tub as well.Also using one to control the low voltage lights around my pond.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161278",
"author": "IluvBread",
"timestamp": "2010-07-22T18:46:38",
"content": "This.Not too advanced, yet interesting and totally doable, for me alot of the things here at hackaday.com is out of my reach.My coding is crap and I don’t have all the tools I would need / want (I don’t even have a dremmel..)But this, I really enjoyed this article. =) Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161279",
"author": "Mike",
"timestamp": "2010-07-22T18:54:07",
"content": "A classmate of my brother did something similar in the 80’s with his car system. He built a case for his residence room so that he could bring his system in with him and have a system in his room as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161280",
"author": "sp00nix",
"timestamp": "2010-07-22T18:55:54",
"content": "I wanna do this with the amp form my 1990 Volvo. Its a nice little 15×2 amp",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161287",
"author": "fartface",
"timestamp": "2010-07-22T19:26:28",
"content": "Um wow… HAD = Stuff we did in the 80’s….next hack : How to use a shaver or TV in your car! What a Uber Hax0r!Or better yet, Add a subwoofer to your moped…Come on guys, cant we get some real hacks instead of someone hooking a power supply up to some old car junk?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161288",
"author": "guest",
"timestamp": "2010-07-22T19:29:26",
"content": "+1 IluvBreadThanks HAD!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161292",
"author": "osgeld",
"timestamp": "2010-07-22T19:40:31",
"content": "I used to work in a car audio shop, we had a 12v supply that was the size of a 15 inch CRT computer monitordidnt matter once you hooked up a 3kW (or larger) amp on it though, we had to use some giant (like 100lbs each) led acid batteries to supplement it or it would start to smell funny",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161293",
"author": "osgeld",
"timestamp": "2010-07-22T19:41:12",
"content": "led = lead",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161309",
"author": "Ryan",
"timestamp": "2010-07-22T20:08:59",
"content": "I’ve actually wanted to learn how to do this for some time now. It’s something that someone can do easily, especially getting the parts (scrap or goodwill). Thanks HAD, this was relevant to me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161315",
"author": "fdawg4l",
"timestamp": "2010-07-22T20:55:58",
"content": "I’d worry about safety in (the possible lack of) proper grounding. Some cars had floating grounds which may work well with the ATX supply, but do bad things when tied to earth ground.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161321",
"author": "Wobble The Hutt",
"timestamp": "2010-07-22T21:12:19",
"content": "reminds me of when i made a sirius sattalite radio bag unit out of car parts before they released smaller more module units. ran it off a gamecube power supply. (great little 12v 3.25amp psu) also when i worked at a local computer shop my cd player for my workbench was an old ATX power suppply with a paper clip jumping a couple pins to turn it on, some crappy computer speakers and a computer cd drive with a play/trackskip button.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161328",
"author": "Fallen",
"timestamp": "2010-07-22T21:25:37",
"content": "I’ve done this 5 times before. :PAlthough my last one was 4 in parallel through 4 beefy FETs. As they heat up their resistance goes up, limiting the current from that PSU. It ensures even current sharing. The tricky part was getting one potentiometer to adjust all of their voltages accurately.I used it to power a 4kWrms car audio amp, while troubleshooting it(It shuts down if the internal bank of caps dont charge up within a reasonable amount of time. A car battery charger couldn’t do it. The inrush current is immense.)One down side is switching frequency, at least in my case, needed to be raised, since it was audible. It was around 15-20kHz before.ALSO REMOVE THE LOWER VOLTAGE RAIL COMPONENTS. I forgot, and blew up some caps on the 5V rail hahaha.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161331",
"author": "D_",
"timestamp": "2010-07-22T21:50:40",
"content": "Nice way to make use of stuff not being used at all. I’m a graybeard myself and it annoys the hell out of me when other graybeards post a bitch, about a posted hack was something back when. Some of use where doing similar in the’70s. I recall dad doing so in the 60’s with a tube type under dash mount AM radio he bought in the 50’s for $100. Ignore we graybeards HaD, continue posting those things similar to that where done long ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161334",
"author": "Shadyman",
"timestamp": "2010-07-22T22:05:32",
"content": "As far as using an AT/ATX power supply, I’d be more interested in finding out what kind of filter caps would be needed for a proper filtering job on the power to prevent buzz, etc (as previously mentioned by Fallen).I’m a little wary about the fact that my 300W amp has a massive-gauge wire, and the ATX’s is so small. Maybe that’s just me :x",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161336",
"author": "oldschooller",
"timestamp": "2010-07-22T22:08:31",
"content": "Great things can be done when people aren’t afraid to bring the 12V world into their homes…. the only suggestion I would make on this would be to add a couple of 5600uF 16VDC or 6300uF VDC caps to stabilize the output of the p/s for transient peak draws. Nice to see people making use of otherwise “useless” things!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161337",
"author": "oldschooller",
"timestamp": "2010-07-22T22:09:30",
"content": "Sorry —- 6300uF 16VDC",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161354",
"author": "Masta Squidge",
"timestamp": "2010-07-22T23:26:03",
"content": "@oldschooller. There shouldn’t be any buzz assuming it is all hooked up right. I mean I can understand how it might occur, but in a car as long as you avoid a ground loop there should never be any noise.Of course filtering as you say can’t hurt.As for why the PSU’s wires are so small, it’s because you don’t need the wire to be as heavy for the short distances. 6-10 inches inside a case is nothing compared to 12 feet in a car. But I’m sure you know that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161356",
"author": "Masta Squidge",
"timestamp": "2010-07-22T23:27:04",
"content": "Oh, to clarify, a car has tons of noise in the system from the alternator, a bit of noise from a PSU shouldn’t be any different.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161358",
"author": "Masta Squidge",
"timestamp": "2010-07-22T23:38:12",
"content": "And oh god I hate to triple post as it were but it states on the page something about limited voltage and whatnot altering the output of the speakers.This is true at the end of it all but in between its not the input voltage that matters. “Internal system resistance” is a non issue and saying “If we have only 12 volts to drive into a speaker” is misleading.The actual voltage output of the amp should be much higher than 12 volts, and as long as your power is within range the amplifier will perform its rated output (within said range of course).ALSO, I believe most stock speakers in cars, especially older ones, are in fact 8 ohms anyways. A higher load on the amp, in most cases, results in somewhat cleaner sound at the expense of volume. It also makes it easier on the amp as well, with less heat generated and longer lifespan.Wiring down to 4, 2, 1, or any load in between places the amp under more stress. Some amps will overheat in moments if ran below its lowest stable impedance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161367",
"author": "Sp`ange",
"timestamp": "2010-07-23T00:31:52",
"content": "jh: lemme tell you, there’s nothing quite like listening to the Disney Princesses CD with a reference Infinity 10″. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161421",
"author": "Kaijuu",
"timestamp": "2010-07-23T06:50:02",
"content": "To those who bitch and moan:While it’s clearly not rocket science (which is why I never posted my rig of using-a-car-amp-with-a-beefy-psu-as-an-inbetweener anywhere), there are tons of people out there who need an amp like this for something or other, but fail to think out of the box.The circuit itself is as straightforward as hooking up a light bulb, but the rig as a whole makes it HAD-worthy.As long as these kinds of “hacks” do not show up every single day, I see nothing wrong with articles like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161425",
"author": "Troy",
"timestamp": "2010-07-23T07:31:17",
"content": "I pulled the “Aktiv” stereo system out of my VW Corrado back in the mid 90’s and did the same thing for my garage stereo, well, sort of. I used the wire harness from the VW and used an AT power supply. The speakers were from the Corrado as well, they have small powered amps on the door speakers that rune those and the front dash speakers. I ended up making small boxes for the door and dash speakers and a separate set of boxes for the rear speakers. So far I have replaces the dash speakers with a set of Bostons and the AT power supply with a lab quality variable power supply. The system works great to this day. I have a 2003 Passat that was totaled back in 12/09 that I have thought about taking the Monsoon out of and updating my garage system with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161442",
"author": "Per Jensen",
"timestamp": "2010-07-23T10:05:13",
"content": "Using this Car-amplifier inside with nominally 8-ohms speakers is not a good idea, you’ll only get a half the wattage out of the amplifier, compared to a 4 ohm speaker, or even a 2 ohm one…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161443",
"author": "Kaijuu",
"timestamp": "2010-07-23T10:16:18",
"content": "Per Jensen: Technically you’re right, but it’s not like he’ll draw the maximum output continuously; a couple of Watts output is enough to make your ears bleed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161463",
"author": "Josh",
"timestamp": "2010-07-23T12:40:03",
"content": "I had a setup like this strapped underneath an old computer chair with speakers on the top left and right as the rear channel on my PC. worked great since there was nowhere behind me to install them.nice build!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161480",
"author": "Andrew",
"timestamp": "2010-07-23T14:55:50",
"content": "Hmm, couple things I’m wondering…What do you suppose the rated power of that PSU is? I know on my 350W supply, the 12V rail will do slightly less than 120W (9.8A @ 12V).Second, if he’s cutting the impedance of the speakers in half, he’ll get 133% current, but only 66% of the voltage, right (ie, 88% of peak power)? Or do these amplifiers not have internal impedance in the way I am thinking of them? Wouldn’t he just be better off leaving them impedance matched and not using “full power”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161485",
"author": "osgeld",
"timestamp": "2010-07-23T15:20:15",
"content": "“” I believe most stock speakers in cars, especially older ones, are in fact 8 ohms anyways””i dont know about old cars, but no 4 ohms is the norm, although you can get less, or you can get more, you just have to check what the amp can doIve seen car amps rated from a quarter ohm to 16",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161507",
"author": "Per Jensen",
"timestamp": "2010-07-23T16:21:57",
"content": "Older stock systems is usually 2 to 4 ohms since the amplifier only have 12 volts to power the speakers. High end amplifiers today is outfitted with switch mode step up circuit, so the voltage it can feed to the speakers are more than 12 volts – so thanks to ohms law, more power can be put out. I have never seen 8 ohms speakers in any car myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161546",
"author": "osgeld",
"timestamp": "2010-07-23T19:12:00",
"content": "no we rarley sold them too, usually big subs so they could put a pile of them on a cheap amp and keep a 4 ohm load on a channel",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161579",
"author": "Nikita",
"timestamp": "2010-07-23T21:33:21",
"content": "Thanks all for your interesting comments.(some do really make me LOL)The setup works equally well with 8 ohms and 4 ohms. The sound is crisped and clean: There are no hums and only a slight hiss. Because these are purely amplifiers the quality of sound output rest on the quality of sound input. As expected the amplifiers ran a little hotter in 4 ohms mode, that’s the reason for those big fins!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161654",
"author": "Reaper",
"timestamp": "2010-07-24T03:32:07",
"content": "I was going to do this once, where I had left the PSU stock and was using some modified connectors to plug in. I accidentally fried the PSU when I plugged it in because I grabbed the wrong connector :( 500$ PSU down the drain :\\ It did 90A on a 12v rail. It’s in my pile of things to take apart, on the off chance some of the circuitry is still good.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161695",
"author": "Dustin",
"timestamp": "2010-07-24T04:53:48",
"content": "I made one of these about 6 months ago. I’m running an Alpine deck, 2 amps, 4 speakers, 1 subwoofer, 3 atx power supplys. Great little garage stereo. Had 0 issues so far.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161697",
"author": "Dustin",
"timestamp": "2010-07-24T04:57:08",
"content": "On ATX power supplies you need some kind of a load on the 5 volt rail to keep them from shutting down and also to make the Power supply last. I don’t know if this adapter does it or not but I used a resistor to accomplish this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161713",
"author": "jeditalian",
"timestamp": "2010-07-24T07:05:09",
"content": "I, too have bridged a couple pins on a very old power supply, (AT was before ATX right?) wired it to a car amp, ran the wires from the back of my computer speaker system, and wired up big ass speakers in my bedroom. pretty sure i brought my 6cd changer out of my car too and ran it off the power supply as well. but i got bored with it and installed it in my car bc my paperclipped power supply was for making old hard drives spin with their case open.. & stuff like that. i wish i still had those old power supplies. have no idea how to trick a new one into thinking it is plugged into a mobo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161719",
"author": "Per Jensen",
"timestamp": "2010-07-24T07:21:10",
"content": "jeditalian: Short the green wire with one of the black ones, or even the case of the power supply (GND) and i turns on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161737",
"author": "cgmark",
"timestamp": "2010-07-24T10:34:40",
"content": "No need to change the speaker setup because it is powered off 12vdc. Most external car amplifiers in the last 10 years use boost converters or voltage doublers to convert the input power to much higher voltages, some as high as 160VDC internally and others with split -45 and +45V supplies inside.The downside of powering it off 12VDC is it will draw more amps than it would if powered by a car. That will generate more heat in the power supply section because the switcher has to handle more current. Depending on how hard you push the amp it can result in the power supply section burning out if they were cheap on the components and used ones close to the current limit.Make sure to use a heavy enough wire from the power supply to the amp so not to lose current in the wire. An easy way to test if what you have is enough is to turn up the amp really loud and measure the voltage at the power supply and compare it to the voltage at the power screws on the amp. If it drops or goes up and down a lot then get a bigger wire.The only difference in the amplifier in a car and the one in a home is the car converts the DC to higher voltage DC and the home converts AC to DC.Everything past that point is basically the same.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161870",
"author": "skater_j10",
"timestamp": "2010-07-25T01:04:30",
"content": "If you’d like to move up to a 200W, 12V power supply, just use an Xbox 360 power Brick. The first generation bricks are rated for 16Amps. Check out this ible to convert one to your needs:http://www.instructables.com/id/XBOX-360-Power-Supply-to-12V-Accessory-Adapter/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167746",
"author": "Masta Squidge",
"timestamp": "2010-08-12T02:15:29",
"content": "You get half the wattage, but if your equipment is any good you dont need very much. You do realize just how loud a stock car stereo will get, when it only puts out MAYBE 15 rms.Wiring it at 8 ohms is in no way, shape, or form a BAD idea. Halving your wattage is only one half of the equation, the other half is that it results in far cleaner output.As far as speaker impedance, my 98 cavalier had 8ohm 4×6 speakers in the front, and 8ohm 6×9 in the back, as stock.A fiero, off the top of my head as an example used 10 ohm speakers. I dont think all four were, but I know for a fact at least one pair is.Especially, as noted above, you are only running at +/- 12v, as opposed to 13-14 as would be in a car. This results in less heat being generated, less current draw and leaner sound.Unless you have horribly inefficient speakers, running it at 8 ohms isnt losing you very much. You do realize that doubling your power only gains you 3db. Granted that is technically twice the volume, its not THAT noticeable in reality.Going from say, 100db, to 97 db is not much of a loss.There is no reason that setup cant perform well at 8ohms.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167749",
"author": "Masta Squidge",
"timestamp": "2010-08-12T02:17:36",
"content": "Oh, and I would love to see any stock system that is ran at 2 ohms per channel. it doesn’t happen. Stock head units could never handle that kind of stress and the heat involved would fry them in the dash.The only exception to that rule would be certain premium sound packages, but those include external amps mounted somewhere in the vehicle.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6183691",
"author": "Jamie",
"timestamp": "2019-10-01T01:42:42",
"content": "My 2006 Nissan altima runs 2 ohm speakers front and rear, manufactured by Orion. If I’m not mistaken out had a small amplifier tucked away in the rear pillar for the rear 6x9s",
"parent_id": "167749",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "167750",
"author": "Masta Squidge",
"timestamp": "2010-08-12T02:19:15",
"content": "Oh, that is not to say that it doesnt work @ 4 ohms. It is just that the “halving your wattage” thing is trivial.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168417",
"author": "Nikita",
"timestamp": "2010-08-14T04:07:32",
"content": "Masta Squidge : I agree, I have since tested the setup at 2 backyard barbecues and the difference is not really noticeable when wired for 4 ohms vs 8 ohms, or so I have been told my test subjects…err listeners. The bass response with 8 ohms do seems a little tighter or much better – not sure why, I was expecting the opposite.Look out for my youtube video rocking a house party with with heavy bass reggae!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3261744",
"author": "Niloy",
"timestamp": "2016-11-09T13:31:27",
"content": "Damn!! great idea man!.Why this kind idea can’t come my head!! :(Well, i have Clarionl A540 at my store room.It’s time to make something cool, by old machine.:D",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.729595
|
||
https://hackaday.com/2010/07/22/mouse-controlled-manipulator-arm/
|
Mouse Controlled Manipulator Arm
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"al5d",
"arduino",
"arm",
"claw",
"host",
"lynxmotion",
"mouse",
"servo",
"shield",
"usb"
] |
[Oleg] worked out a way to use his
USB mouse to control this manipulator arm
. Using a Lynxmotion AL5D (
we’ve seen the AL5A previously
) he drives the six servos with an Arduino servo shield. A USB host shield handles the HID end for connecting the mouse. The video after the break says it all, [Oleg] has no problem picking up that figurine quickly and accurately. Sliding the mouse controls horizontal movement in all directions. The scroll wheel moves the claw up and down. And holding the left or right buttons what using the control wheel closes or rotates the claw. All we can say is: Bigger,
BIGGER
!
[youtube=http://www.youtube.com/watch?v=nz_tgDD8FNw]
| 22
| 22
|
[
{
"comment_id": "161243",
"author": "FO fan",
"timestamp": "2010-07-22T16:12:47",
"content": "Nice Vault-Tec Bobble-head!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161246",
"author": "FedeOrtiz",
"timestamp": "2010-07-22T16:28:03",
"content": "So coool!! Congratulations!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161249",
"author": "Ivan",
"timestamp": "2010-07-22T16:45:07",
"content": "Arrr! Vault Boy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161256",
"author": "Hosky",
"timestamp": "2010-07-22T17:33:56",
"content": "Cool. Seems like a USB gamepad might make it easier to control the arm.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161257",
"author": "Xtremegamer",
"timestamp": "2010-07-22T17:34:01",
"content": "two joysticks could be better tho n maybe a PS2 USB controller ? :)just a though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161260",
"author": "M4CGYV3R",
"timestamp": "2010-07-22T17:44:24",
"content": "This is a perfect example of one of those things that is being used exactly as it was intended.An arduino and two shields controlling a premade robot arm…oh yay! I’ve never seen that before!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161262",
"author": "Erik Johnson",
"timestamp": "2010-07-22T17:50:07",
"content": "Cool!Though I don’t know about using the wheel for all the fine movements, I think it wouldn’t been easier to have the L/R mouse buttons determine if the X/Y axis of mouse movement translate to the elbow movements. e.g. Left down + mouse Y movement would work better for arm Z movement, and/or Left+X for rotation…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161263",
"author": "Telxon",
"timestamp": "2010-07-22T17:56:28",
"content": "Noooooo….. not the bobblehead!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161266",
"author": "kyoorius",
"timestamp": "2010-07-22T18:11:23",
"content": "Someone buy this guy a Logitech VX Nano mouse with the weighted free rolling scroll wheel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161272",
"author": "Janez D.",
"timestamp": "2010-07-22T18:24:04",
"content": "I myself would prefer an analog joystick…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161316",
"author": "hpux735",
"timestamp": "2010-07-22T21:03:27",
"content": "I generally agree with @Erik, I don’t think moving the wheel while holding down a button is very comfortable, or precise. Left-click for Z and rotate, and Right-click for gripper and wrist, I say.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161322",
"author": "DeFex",
"timestamp": "2010-07-22T21:12:20",
"content": "this would be cool with a 3dconexxion 6 axis 3d mouse, i dont know if the USB could be translated though since its probably not standard HID",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161330",
"author": "riycou",
"timestamp": "2010-07-22T21:46:16",
"content": "why not just use a track ball mouse, curves to the hand and better precision when moving and better for tight spaces. i use one every day i like it better than a regular soap bar mouse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161351",
"author": "vonskippy",
"timestamp": "2010-07-22T23:05:42",
"content": "Ironically, I just put together a Manipulator arm controlled mouse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161394",
"author": "tech-no-pest",
"timestamp": "2010-07-23T03:46:14",
"content": "that’s so coolan @ M4CGYV3R quit being a prick…the shields are not something that the layman has much use for it in it’s self is a piece of hacker tech there for a hack. Plus the mouse is a pointing device and is being used to control an another device without the use or direct aid of a computer or laptop so there for that is a hack as well. PPYHOYA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161409",
"author": "Boss",
"timestamp": "2010-07-23T05:19:39",
"content": "Ok, new AMAZING idea:– connect the robot arm to an iPhone 4 via Bluetooth.– mount a small, outward-facing video camera onto the robotic arm, so you can see where the arm is via your Internet equipped iPhone 4, provided the video camera is wireless enabled as well.– use the iPhone 4’s gyro to move the arm around and you would be able to SEE out of the wireless camera, from your iPhone 4’s screen.– double-tap the iPhone 4’s screen and some switches appear, with enough room still available to be able to see out of the robotic arm. The switches trigger the gyro’s control to and fro the entire robotic arm, and rotating, to rotate the grabber.– with double-tapping also brings up a slider which can be used to close and open the grabber.Is this at ALL possible?!?!?!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161420",
"author": "octel",
"timestamp": "2010-07-23T06:49:58",
"content": "Hacking. Hacking never changes.The end of the hacking community occurred pretty much as we had predicted. Too many noobs, not enough parts or datasheets to go around. The details are trivial and pointless, the reasons, as always, purely nerdy ones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161436",
"author": "Philpax",
"timestamp": "2010-07-23T09:25:41",
"content": "@octel: I love you for that reference.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161742",
"author": "strider_mt2k",
"timestamp": "2010-07-24T11:11:53",
"content": "Definitely need one of the Logitech mice with the freewheel on it.That alone would smooth out the jitters quite a bit.I’d love to see an update with one being used in place of the standard mouse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "164402",
"author": "walkietokyo",
"timestamp": "2010-08-01T01:20:52",
"content": "I can’t believe he didn’t hook the robotic arm up to the mouse to make it control itself.That would be an epic meta-moment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "217867",
"author": "nah!",
"timestamp": "2010-11-24T20:18:46",
"content": "using the wheel for these inputs suckswhy not make button + mouse movement do the other jobs?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "217900",
"author": "Exec",
"timestamp": "2010-11-24T21:35:58",
"content": "@bossDefinitely possible. Put down your “iPhone 4” for a bit and get to work.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.787923
|
||
https://hackaday.com/2010/07/22/adding-a-serial-port-to-a-dockstar/
|
Adding A Serial Port To A Dockstar
|
Mike Szczys
|
[
"classic hacks"
] |
[
"dockstar",
"seagate",
"serial"
] |
If you don’t look close you might think this Seagate Dockstar is in stock condition. But look at the three holes in the white case just above the thumb drive which act as
a serial connection for the Dockstar
. [Firestorm_v1] posted the instructions after see our post about
installing OpenWRT on the device
. He did a nice job of concealing the connection, heating up a pin header to melt the holes he needed. Now he has quick access without sacrificing features or aesthetics. A serial-to-USB cable is modified with a polarized pin header to ensure a quick and accurate connection. This is great for PC connectivity but you also never know when you want to
add your own hardware bits
to the network device.
| 9
| 8
|
[
{
"comment_id": "161365",
"author": "cde",
"timestamp": "2010-07-23T00:24:33",
"content": "I wish I could find these for cheap. Anyone have a spare one for like 15 + shipping?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161469",
"author": "ChalkBored",
"timestamp": "2010-07-23T13:12:55",
"content": "Is there enough room in one to use a headphone jack instead?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1032274",
"author": "trout",
"timestamp": "2013-07-28T05:55:22",
"content": "yesh, i used one that is for 1/8″ 3.5mm headphones, its convenient",
"parent_id": "161469",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161488",
"author": "MysticPixel",
"timestamp": "2010-07-23T15:32:08",
"content": "@cde: best price I could find was $43 + $4 shipping:http://www.sizzletwist.com/seagate-freeagent-dockstar.htmlNot sure about the merchant, but reviews on google shopping seemed mostly decent, and they accept PayPal, so I figured it was worth a shot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161611",
"author": "ruthlesspirate",
"timestamp": "2010-07-24T00:42:42",
"content": "I got one on woot.com a few weeks ago for about $20 and I love it. I had been looking for a cheap and easy way to connect all my external HD’s. There are tons of hacks readily available for these as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161633",
"author": "PlugPBX",
"timestamp": "2010-07-24T02:22:28",
"content": "Some guys over on our forums at PlugPBX are working hard on getting Asterisk and the other goodies working on this, just like its second cousin, the SheevaPlug ;)http://forums.plugpbx.org/index.php?board=10.0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161741",
"author": "nyder",
"timestamp": "2010-07-24T11:08:11",
"content": "I bought one from swizzletwist, got it 5 days later. So they are cool with me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "171705",
"author": "GZ",
"timestamp": "2010-08-20T20:02:40",
"content": "It’s on 1saleaday.com for $23 to the door.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "190905",
"author": "Terc",
"timestamp": "2010-10-04T20:32:09",
"content": "Available at Circuit City/tigerdirect/compusa for $37.32 with 3 day shipping.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.144411
|
||
https://hackaday.com/2010/07/22/chipophone-plays-video-game-classics/
|
Chipophone Plays Video Game Classics
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"74hc165",
"8 bit",
"ATmega88",
"organ",
"synthesizer"
] |
This thrift shop organ gets a new life as an 8-bit music maker. Called
the Chipophone
, it relies on an ATmega88 to produce sounds that you might associate with classic video gaming. [Linus Akesson] takes us through all of the different sound settings in the video after the break, including performances of your theme music favorites.
The original organ uses transistor logic making it rather easy to patch into the hardware. Thanks to
the build log
we know that [Linus] used 74HC165 input latches to monitor each of the switches for the 120 inputs. Fifteen of these latches work like a backwards shift register 74HC595, cascading all of the parallel inputs into one serial signal. From there the microcontroller takes over, monitoring the keys, pedals, switches, and potentiometers and outputting the appropriate sounds.
[Thanks 7e]
| 24
| 24
|
[
{
"comment_id": "161219",
"author": "none",
"timestamp": "2010-07-22T14:17:13",
"content": "“backwards shift register” the correct term is parallel to serial shift register and the other is serial to parallel shift register",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161222",
"author": "darkore",
"timestamp": "2010-07-22T14:31:54",
"content": "Kinda hard to see so much win in a single place. Kudos to the author.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161223",
"author": "osgeld",
"timestamp": "2010-07-22T14:39:55",
"content": "thanks none, I was just about to jump them for that",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161226",
"author": "Xb0xGuru",
"timestamp": "2010-07-22T15:05:32",
"content": "My daily glee has been used up on this one post. What an amazing piece of work!! Kudos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161231",
"author": "Mike Szczys",
"timestamp": "2010-07-22T15:24:35",
"content": "@none & @osgled: Ok, point taken. Let’s call it a backwards 595. I think the parallel-to-serial shift registers are much less know components.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161237",
"author": "sethj",
"timestamp": "2010-07-22T15:36:44",
"content": "fantastic!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161239",
"author": "Rudolph",
"timestamp": "2010-07-22T15:54:26",
"content": "“in the video after the break”This is the third post in as many days that I haven’t seen a video posted after the break. Anyone else? Or is it on my end somewhere?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161245",
"author": "Stuart",
"timestamp": "2010-07-22T16:26:05",
"content": "This is amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161248",
"author": "Acedio",
"timestamp": "2010-07-22T16:45:07",
"content": "Linus is my hero! His work is always top notch and very interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161250",
"author": "SquantMuts",
"timestamp": "2010-07-22T16:50:16",
"content": "@Mike SzczysThere is a thing such as a backwards 74XX595, it is called a 74HC597.@articleVery impressive. I loved how he documented in disassembling the organ. I would love to see some schematics and especially the sound generating code.I really like that he added features to enable him to play songs that may be hard to play with two hands. I do not know if the features he implemented are common on a ordinary keyboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161255",
"author": "M4CGYV3R",
"timestamp": "2010-07-22T17:30:58",
"content": "@RudolphYes, I was wondering the same thing.I haven’t seen several videos when “video after the break” has been claimed for the last few days.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161259",
"author": "M4CGYV3R",
"timestamp": "2010-07-22T17:42:01",
"content": "That was pretty amazing.I think I was more impressed that the guy could play all that than the actual build, though it was also awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161273",
"author": "Awesomenesser",
"timestamp": "2010-07-22T18:35:18",
"content": "Links to his videosOverview with sample songs:http://www.youtube.com/watch?v=m1pchpDD5EU&feature=player_embeddedAmazing Song (Spellbound)http://www.youtube.com/watch?v=gAuPIgD-TM0He certainly knows how to play. I can’t wait for more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161296",
"author": "Holy Moley!",
"timestamp": "2010-07-22T19:50:39",
"content": "I’d give so many monies for this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161314",
"author": "zool",
"timestamp": "2010-07-22T20:55:16",
"content": "very coolmegaman2 music …niceso this uses midi control, some knobs and an atmega88, could probably make just a midi input with an arduino and get the same sounds? might be fun to try",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161329",
"author": "r_d",
"timestamp": "2010-07-22T21:39:16",
"content": "The 74HC165 is a parallel input serial output shift register. What is with all this nonsense about it being “backwards” and trying to call it a 595? It isn’t an uncommon part.We don’t need these things explained to us, and anyone who doesn’t know would be better off checking Wikipedia or by googling “74HC165 datasheet”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161375",
"author": "Benjamin Brown",
"timestamp": "2010-07-23T00:53:55",
"content": "And sadly there was NO video after the break -.-I want to see and hear that there wire pron star.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161447",
"author": "ChalkBored",
"timestamp": "2010-07-23T10:48:54",
"content": ">I want to see and hear that there wire pron star.Not badly enough to click the link to it’s website, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161459",
"author": "mre",
"timestamp": "2010-07-23T12:23:54",
"content": "Most people dont keep logic gate chip data in their heads. The “backwards yadayda” bs doesnt help. Nyone with a few hours on the iron knows sipo and a piso.Had – dont make shit up. Its not scifi that needs to be explained in cryptic baby terms.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161461",
"author": "Eddie",
"timestamp": "2010-07-23T12:32:17",
"content": "Lol a edit/preview button would be nice :Phttp://www.youtube.com/watch?v=m1pchpDD5EU",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161479",
"author": "chango",
"timestamp": "2010-07-23T14:43:00",
"content": "@mre In all fairness the only experience most people here have had with any shift registers is in LED matrix drivers. Few people know the whole set of 74xx part numbers, but a lot of us know more or less what’s available in the series by function.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161613",
"author": "Cpt.Soda",
"timestamp": "2010-07-24T00:58:47",
"content": "There it is. Must have made a typo in the search bar :(. Awesome Project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161725",
"author": "kopfkopfkopfaffe",
"timestamp": "2010-07-24T08:39:12",
"content": "Awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161743",
"author": "strider_mt2k",
"timestamp": "2010-07-24T11:19:01",
"content": "Wow.Not only an incredible project, but he’s a great musician too!Great stuff!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.016813
|
||
https://hackaday.com/2010/07/21/tailgating-this-car-carries-a-heavy-penalty/
|
Tailgating This Car Carries A Heavy Penalty
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"beetle",
"engine",
"jet",
"street legal",
"vw"
] |
This hack seems simple enough:
1. Open hatchback
2. Insert jet engine
3. Profit
Actually, the guy who
added a jet engine to a VW Beetle
has a PhD in Mechanical Engineering from Stanford. He claims this is street legal, and even has a snapshot of the police trying to figure out what to charge him with after stopping him on the road. There’s plenty of details and we’re not questioning [Ron Patrick’s] competence, but having the intake for the turbine inside the cab of the vehicle seems a bit insane. He remarks that “it’s a little windy but not unbearable”… yeah.
One the same page you’ll find his dual-jet modified scooter. The starting cost there is considerably less, especially if you
build your own ram jets
.
[Thanks Goldscott]
| 68
| 50
|
[
{
"comment_id": "160970",
"author": "Mattj",
"timestamp": "2010-07-21T20:02:03",
"content": "Not to be funny, but this has been around for quite a while, I can’t believe you haven’t seen it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160972",
"author": "The DON",
"timestamp": "2010-07-21T20:14:55",
"content": "The Beetle-mobile",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160973",
"author": "osgeld",
"timestamp": "2010-07-21T20:18:48",
"content": "mmm toasty",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160976",
"author": "Dan Fruzzetti",
"timestamp": "2010-07-21T20:25:15",
"content": "seems to me that DRIVING THAT ON A STREET would also carry a heavy penalty",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160977",
"author": "caps",
"timestamp": "2010-07-21T20:26:17",
"content": "ramjets would not operate well at all at the speeds a VW Beetle would go.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160987",
"author": "KittyKat",
"timestamp": "2010-07-21T20:36:44",
"content": "@Dan Did you miss the part that said Street legal? or just ignore it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160992",
"author": "Eddie",
"timestamp": "2010-07-21T20:47:02",
"content": "Don’t forget to roll down the windows.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160993",
"author": "Cynyr",
"timestamp": "2010-07-21T20:47:44",
"content": "@DanIf you turn it on there, sure, otherwise why would it be different that hanging some wood out the back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160994",
"author": "medix",
"timestamp": "2010-07-21T20:49:50",
"content": "Ever see the one built inside a minivan? (not this guy). You had to keep the side doors open, or it would suck the windows in.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160995",
"author": "hpux735",
"timestamp": "2010-07-21T20:52:28",
"content": "It seems like a beetle is about the strangest choice for a hack like this. A 80’s muscle car would be more fitting, I think.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160997",
"author": "AridTag",
"timestamp": "2010-07-21T20:56:00",
"content": "Want a video of it in action!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160999",
"author": "Jason",
"timestamp": "2010-07-21T20:58:13",
"content": "@hpux735They are useless for anything else",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161000",
"author": "Wolf",
"timestamp": "2010-07-21T20:58:17",
"content": "Greatest. Hack. Ever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161001",
"author": "Tommy Faze",
"timestamp": "2010-07-21T21:06:53",
"content": "I am thoroughly unfazed, while it’s a hack the working on the beetle fitting that engine was amateurish, and the actual metal works for the body rather raw. Same goes with the throttle installation and instrumentation.I rate this a C-",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161004",
"author": "zool",
"timestamp": "2010-07-21T21:14:36",
"content": "yeah 3+ years old or sohttp://www.youtube.com/watch?v=mJyAA0oPAwEi like the jet powered scooter on his page though, hadn’t seen that one before",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161005",
"author": "Jack",
"timestamp": "2010-07-21T21:19:37",
"content": "I think you meant to say “On the same page” not “One the same page”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161007",
"author": "acoq",
"timestamp": "2010-07-21T21:24:27",
"content": "Waiting for NFS: Jet propulsion",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161008",
"author": "Alex M.",
"timestamp": "2010-07-21T21:25:29",
"content": "@medix: This is a jet engine, the minivan is powered by a helicopter turbine that drives the rear wheels (gas engine drives the front wheels). This provides thrust while the minivan’s turbine doesn’t.Still cool though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161009",
"author": "asdasd",
"timestamp": "2010-07-21T21:25:52",
"content": "ramjets cannot work without an engine:they need a LOT of air to work so it’s usable only on planes(also it’s an old and unused concept).It’s better to have a pulse-jet that cost almost nothing and it’s evene simplyer!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161019",
"author": "bfsgbvsd",
"timestamp": "2010-07-21T21:37:47",
"content": "Ooooooooooooooooooooooooooooooooooooooold",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161025",
"author": "Hirudinea",
"timestamp": "2010-07-21T21:45:50",
"content": "@hpux735Nah, he should have used a Smart Car!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161030",
"author": "Jason",
"timestamp": "2010-07-21T22:13:47",
"content": "@Tommy Fazeso wheres your jet powered car? since you have done so many and all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161032",
"author": "xorpunk",
"timestamp": "2010-07-21T22:15:51",
"content": "How is this even remotely street legal? It literally incinerates the vehicles behind it..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161033",
"author": "cmholm",
"timestamp": "2010-07-21T22:15:53",
"content": "Back in the early ’90’s, an older Honda Civic passed me on the Simi Valley freeway, headed towards Moorpark College. It included an air scoop on the roof, linked to a duct dropping behind the front seats, and a CA license plate was cut in two, each half hinged to swing open and expose a large diameter tailpipe. After the car passed, the plate halves swung shut.Unfortunately, I had the radio on too loud to notice if there had been a turbine sound, and I didn’t opt to be late to work and follow the car to its destination for a better look/explanation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161054",
"author": "biozz",
"timestamp": "2010-07-21T23:29:11",
"content": "did it really have to be a beetle? … the joke among cars? XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161056",
"author": "Erwin",
"timestamp": "2010-07-21T23:38:11",
"content": "“has a PhD in Mechanical Engineering from Stanford”So what? his still a dumb4ssWhat to charge him with maybe killing the driver of the car behind him. Also that car is a piece of …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161057",
"author": "Draco",
"timestamp": "2010-07-21T23:47:07",
"content": "So that is where our research dollars go!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161060",
"author": "60's stuff",
"timestamp": "2010-07-21T23:53:15",
"content": "“did it really have to be a beetle? … the joke among cars? XD”Well, yeah, for the colors/flashbacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161062",
"author": "Taylor Alexander",
"timestamp": "2010-07-21T23:59:39",
"content": "Guys, I think part of the reason he chose a Beetle was for exactly the reason that you’re all saying he shouldn’t have… Because its totally the wrong car… and that makes it funny!Get a sense of humor people!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161064",
"author": "vonskippy",
"timestamp": "2010-07-22T00:02:00",
"content": "“has a PhD in Mechanical Engineering from Stanford”Unless he spent more time in the Crown Quad then Building 560, it doesn’t make him a law expert.No WAY is that street legal.Lets see him site the law that allows that on the road.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "161285",
"author": "matt",
"timestamp": "2010-07-22T19:15:50",
"content": "@vonskippy You’ve got it wrong. Find the law that *doesn’t* allow it on the road. Most anything is legal if its first.",
"parent_id": "161064",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161065",
"author": "pogyhauler",
"timestamp": "2010-07-22T00:04:56",
"content": "——————Yawn—————-We’ve seen rockets/turbojets/ramjets/pulsejetsof any size shape or description attached to anything that moves. Including a couch on casters.Nobody remembers Mad Max?The notion was already old and boring before ‘Hooper’. The movie sucked but at least they had the grace to use a Camaro.I guess even Stanford Grads can have more money than sense.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161068",
"author": "Skitchin",
"timestamp": "2010-07-22T00:35:46",
"content": "http://www.youtube.com/watch?v=kvIi17by5W0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161069",
"author": "bob",
"timestamp": "2010-07-22T00:41:41",
"content": "Nice work if not new nor practical.He’s lucky he wasn’t stopped by “Ponch” & “Jon”.Those CHiPs guys kick ass.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161072",
"author": "zing",
"timestamp": "2010-07-22T01:01:30",
"content": "@vonskippyIt is street legal, but only as long as he doesn’t turn on the jet while on public property. It still has a regular gas engine.They could get him with a noise citation, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161073",
"author": "Josh",
"timestamp": "2010-07-22T01:21:15",
"content": "Wow! I remember seeing (hearing!) this in person a few years ago. The owner is a unique (nice) individual.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161074",
"author": "JB",
"timestamp": "2010-07-22T01:26:21",
"content": "Great hack. Nice to keep tailgaters at the right distance :PIf the picture is 1/20th the fireball, I want to see a video (zoomed out). Cool stuff. It is nice to have money.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161075",
"author": "Zac",
"timestamp": "2010-07-22T01:29:51",
"content": "Not Street legal in the US.US DOT requires a little thing called a “bumper” capable of absorbing low speed (2 MPH) impact damage on passenger vehicles. I don’t see a bumper on the end of that jet.He gets away with it because California doesn’t have a comprehensive safety inspection (only emissions).Or if he classifies it as a non “passenger vehicle,” that doesn’t have to meet bumper standards. Maybe if he carries around a loaf, he can try and pretend it’s a bread truck.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161083",
"author": "nubie",
"timestamp": "2010-07-22T02:06:45",
"content": "I am guessing that “Tommy Faze” hasn’t had a look at the extensive aluminum frame attached to the body underneath the bumper skin.The metalwork inside (did you mean bodywork? That is likely polyurathane), is pristine.This is pretty old, I have seen it in Mags and David Letterman had it in a segment for his show (he said the visibility was “10 miles, or nearly infinite”, here in California’s great Valley that isn’t really a long distance, 30 miles would be a much clearer day.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161092",
"author": "Spork",
"timestamp": "2010-07-22T03:07:56",
"content": "You forgot the step “????” That should be step 3 and 4 should be profit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161107",
"author": "D_",
"timestamp": "2010-07-22T03:31:44",
"content": "Oh my God! The dude could be sent to Gitmo to be water boarded, to reveal his terrorist connections. That or on BSer was BSin another BSer Anyway in many States any thing extends 3 feet past a vehicle taillights has to have a red flag during the day and a red cluster light at night. God dammit I forgot to take the cluster light off before lighting it up again, gotta buy a new one,again. Driving that thing down the road in cattle country ma set off a stampede.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161132",
"author": "erica",
"timestamp": "2010-07-22T04:16:11",
"content": "My solution for tailgators isnt that extreme.. though I am impressed.I just start washing my windsheild with fluid. If they are too close, it smears the tailgators windshield. he smears it wiping it,. learns a lesson",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161135",
"author": "Heatgap/Ho0d0o",
"timestamp": "2010-07-22T04:29:40",
"content": "This thing is great. His site is funny. You can really pick up on his humor as he describes some of the tech details.I’d love to see that scooter with dual mounted jets.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161144",
"author": "John",
"timestamp": "2010-07-22T04:59:56",
"content": "1) Someone mentioned to quote the law that says that’s legal… I think the idea is to quote the law saying that it isn’t legal.2) Even if a cop does flash his lights, if he catches you to give you the ticket… then you’re doing it wrong.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161147",
"author": "Space Cowboy",
"timestamp": "2010-07-22T05:22:33",
"content": "A Honda Metropolitan with dual jet engines? Pardon me while I cringe, but that looks like an awfully good way to get oneself or one’s wife killed. It looks awesome, but many suicidal things look awesome until they’re removing you from the pavement with a spatula",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161151",
"author": "nicco",
"timestamp": "2010-07-22T05:53:15",
"content": "lol, and the old air-cooled vw guys thought they should be concerned with a fire in back!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161153",
"author": "PolyJetter",
"timestamp": "2010-07-22T06:00:03",
"content": "Where else would the air intake reasonably be located except inside the vehicle? He could have used a longer jet engine and located it outside of the car but I think that is about the point where this mod (from like 1995) would have gone from extreme to bordering on pointless. Still, a fun exercise though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161155",
"author": "nicco",
"timestamp": "2010-07-22T06:05:20",
"content": "@PolyJetteras cmholm mentioned, there is always the possiblity of an air scoop on the roof. he might be able to cut a circle in his windsheild and run a straight-through intake. although that would probably make reaching the glove box from the driver’s seat a real bitch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161157",
"author": "mike",
"timestamp": "2010-07-22T06:21:17",
"content": "Totally awesome, though he should channel the intake to some side scoops or something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161160",
"author": "EquinoXe",
"timestamp": "2010-07-22T06:38:38",
"content": "Forget the beetle, check the WIFE’s scooter on his page!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161170",
"author": "SuperSparky",
"timestamp": "2010-07-22T08:12:38",
"content": "OK guys, this is a very old story (more than five years). However, back when it came out there was an interesting following. I live in California and do know that this car is street legal. It’s true, the DMV has tried to make it illegal, but due to the inconvenience of something called the US Constitution, they cannot do anything about it, except make rules for new cars.It is illegal for any government in the USA to make a law that is retroactive (a legal term called “Ex Post Facto”). The laws that apply to this vehicle are the ones in effect at the time the car was manufactured. This means it qualifies as a hybrid and an alternative fueled vehicle.This engineer was smart. He didn’t modify the original drive train at all and therefore cannot be used as an excuse to remove it from the road. It is smog legal, according to the law. It is a hybrid, according to the law. It qualifies as an alternative fuel vehicle, according to the law (although he doesn’t make any attempts to exploit the exceptions given to such vehicles). It is mechanically safe, according to the law, as it retains all of its factory safety features and has additional ones added to strengthen that requirement.The fuel is expensive and he rarely fires it up, except in a controlled area. It’s mostly functional eye candy.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.097025
|
||
https://hackaday.com/2010/07/21/cnc-hardware-stream-g-code-to-an-arduino/
|
CNC Hardware: Stream G-code To An Arduino
|
Mike Szczys
|
[
"Arduino Hacks",
"cnc hacks"
] |
[
"arduino",
"cnc",
"g-code",
"grbl",
"stepper"
] |
[Reza Naima] has been using an Arduino as the center of his CNC setup for quite some time now. It handles three stepper motors, limiting switches, e-stop, and spindle control. The sketch he’s using allows him to stream g-code to the popular prototyping platform, freeing him from needing a dedicated PC. It’s worked so well that he’s decided to clean up the code and develop a shield to help others get up and running. If you want to see his progress or lend a hand, check out
the google group he started
for the schematics, code, and forum discussions. There is already
a CNC project for Arduino called Grbl
but [Reza’s] approach uses the Arduino libraries in an effort to make the sketch more customizable for the average user.
| 19
| 19
|
[
{
"comment_id": "160964",
"author": "klk",
"timestamp": "2010-07-21T19:22:05",
"content": "i’m doing something similar with an xmega-based controller board, but instead of building a g-code parser, i’m piggybacking on the work of the reprap folks and their sanguino3g protocol, which is cheap to implement on the microcontroller side. plus replicatorg is pretty decent software, even if it is biased toward 3d printers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160978",
"author": "Jacob",
"timestamp": "2010-07-21T20:27:37",
"content": "Interesting.Whats the volt/amp limit for stepper motor using the arduino? Or is that dependent on supporting hardware?-Jacob",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160985",
"author": "xeracy",
"timestamp": "2010-07-21T20:36:04",
"content": "Did anyone find any actual schematics?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160996",
"author": "zerth",
"timestamp": "2010-07-21T20:55:57",
"content": "@xeracyThere’s a circuit layout about halfway down.http://groups.google.com/group/rstep/browse_thread/thread/4b66f5c0c16738a7#@jacobYou’d want an hbridge or a darlington array for the actual switching, arduinos only do a few mA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161020",
"author": "chris",
"timestamp": "2010-07-21T21:39:41",
"content": "Nice! more like this!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161024",
"author": "Flood_of_SYNs",
"timestamp": "2010-07-21T21:43:36",
"content": "I believe the max current is about 40mA for the microcontroller pins.It has been awhile since I read the datasheets though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161042",
"author": "bud",
"timestamp": "2010-07-21T22:48:15",
"content": "what is the max step rate using the Arduino.for one axis to move at 100ipm with a lead-screw pitch of 5tpi and using a driver in 8th step it would require a pulse train of ~13khz. (100*5*200*8)/60200 steps per revolution stepper motora fpga would be much faster despite the increced complexitysmooth stepperhttp://www.warp9td.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161045",
"author": "drew",
"timestamp": "2010-07-21T22:55:46",
"content": "I know enough to know that this is quite impressive, even though I don’t yet know CNC coding.Being able to implement this in a shop environment with a dedicated switching array could completely cut out another computer from the mix, and a possible choke point by infection.This is very impressive- I really welcome further development of this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161050",
"author": "Gottabethatguy",
"timestamp": "2010-07-21T23:16:27",
"content": "Sweet, I’ve been thinking of doing something similar, this will really help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161154",
"author": "macona",
"timestamp": "2010-07-22T06:02:41",
"content": "@budThe smoothstepper is pretty much dead. No software updates. Promised features never materialized. I have a small lathe with one.Still the best bet is using the parallel port with Mach3 or EMC2. Sounds like the little microcontrollers have a hard time keeping up, lots of processing to do when doing circ int.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161161",
"author": "Buzz",
"timestamp": "2010-07-22T06:38:52",
"content": "THis looks a lot like what the reprap project has been doing now for about 5 years. Yes, the reprap runs on an arduino and gcodes and stepper motors!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161168",
"author": "reza",
"timestamp": "2010-07-22T07:12:18",
"content": "Hi all –Thanks for the words of encouragement. The controller board is designed to handle 35V @ 2A per winding (2 winding per motor -> 16A total).The firmware started from the reprap codebase, but 99% of it has been re-written (the only remaining part is how circles are computed). The biggest problem with the original code was that the steps were not spaced out equally and could cause badness (I can elaborate but it probably will not interest the majority here). I played around with a number of algorithms till I was able to get the timings evenly spaced (to within 1uS).If possible, let me know if you would prefer having this designed as a shield or add an AVR+FTDI chip to make it self sufficient. Please post your response here and your reasoning.https://spreadsheets.google.com/viewform?formkey=dEVkUGFIcVJITjNPSkdjcXNMalhYbXc6MQThanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161202",
"author": "xtreker15",
"timestamp": "2010-07-22T12:25:32",
"content": "Thanks for posting I would really like to do something like this. I know more of the G code side of this than the electrical side so I think this might help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161206",
"author": "blue carbuncle",
"timestamp": "2010-07-22T13:09:53",
"content": "Like the build! Nice and clean and easy to understand :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161207",
"author": "Reggie",
"timestamp": "2010-07-22T13:22:36",
"content": "@ Reza – Do both designs, then it gives the complete novice a buy once unit, whereas arduino enthusiasts would more than likely appreciate a shield and anyone more advanced can adapt the shield and add their own mcu configuration.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161267",
"author": "reza",
"timestamp": "2010-07-22T18:15:29",
"content": "BTW, video in action:http://www.youtube.com/watch?v=SzFpiU6OSTQ",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161274",
"author": "donov4n",
"timestamp": "2010-07-22T18:37:49",
"content": "Hi Reza,I’ve seen your video. Nice work! Did you build your DIY-CNC by yourself or based on an existing design on the web?I’m just asking because I plan to build a 3d printer by myself but it should be good for milling pcbs as well!BR",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161282",
"author": "reza",
"timestamp": "2010-07-22T19:02:54",
"content": "@BR It’s built form a kit from here:http://zentoolworks.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "514179",
"author": "Per-Albert",
"timestamp": "2011-11-20T20:15:13",
"content": "Hi Nice work indeed, any possibility to buy one of these Rstep boards in near future, i currently working on a couple of small and medium size 3 axis mills. this seems to be the perfect choice of controller. I already have almost ANY TYPE of Arduino in my stock + a couple of Sanguino as well. currently running 1 mill on EMC2 and a 3 axis Stepper Motor Driver Board Controller TB6560. works fine but i really love working with the Arduino, but sadly not an expert into soldering and components.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,403.963501
|
||
https://hackaday.com/2010/07/21/android-development-101-part-3introduction-to-databases/
|
Android Development 101 – Part 3:Introduction To Databases
|
Greg R. Jacobs
|
[
"Android Hacks",
"Software Development"
] |
[
"android",
"code",
"dev",
"development",
"google"
] |
In this tutorial we will be pivoting from our last tutorial on
Graphical Elements
to start focusing on databases in Android development. The android platform uses SQLite databases in its applications and is one of five data storage options in android development. We will only be focusing on SQLite development in android because it is key to the construction of a workable/functional program. After this tutorial you should be able to implement a SQLite database that you are then able to insert and select items from tables in the database.
For this project we will be creating a Random Quote generator that has you enter quotes or sayings in a textbox and press a button to insert them into the database. We will issue a confirmation toast that allows us to see if the data was entered into the database successfully and the textbox will be blank. If a second button is pressed, the database will be accessed and told to select a random quote from the database to show in a toast on the screen.
To start off we will make a new project called
RandomQuotes
. In
part one
of the series we stepped through making a new project so we wont walk through all of the steps again but instead I will just give you the information you need. The information to get this project up and running bare bones is as follows:
Project Name:
RandomQuotes
Build Target:
Android 1.5
Application Name:
RandomQuotes
Package Name:
com.gregjacobs.randomquotes
Create Activity:
QuotesMain
Min SDK Version:
3
After inserting these values and you have pressed Finish we will start by making a class file in our
com.gregjacobs.randomquotes
package. To do this we will right click on the package and navigate to
New
then to
Class
. When the new window pops up the only data we will enter is the
Name
section filling it with
DBAdapter
. After this is done we press
Finish
and are presented with a bare bones class file that we will quickly start to modify. This tutorial will be like the last in the sense that code will be posted and I will explain the important parts and what functions are doing. The only difference from the previous tutorial code will be that I include text files as well as documenting the code here so you are able to download and compare. We will start off with the
DBAdapter.java
file:
package com.gregjacobs.randomquotes;
import java.util.Random;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
We will start off by importing all of the tools required to get this SQLite Database up and running. All of these might be straightforward for database programmers but we will discuss them anyways.
ContentValues
allow us the ability to store a set of values for insert statements,
Context
as explained in the last post allows us access to the application environment.
Cursor
is probably the most vital import we will need next to the SQLite imports. Cursor allows us access to the data returned to the cursor from a database query.
SQLException
allows us to throw SQL exceptions if there is ever an error, these messages provide more insight as to what the problem may be.
SQLiteDatabase
gives us the ability to manage a SQLite database using methods.
SQLiteOpenHelper
is basically a helper class that allows for creation and version management of a database.
Log
will basically log output in case there is an error.
public class DBAdapter
{
int id = 0;
public static final String KEY_ROWID = "_id";
public static final String KEY_QUOTE = "Quote";
private static final String TAG = "DBAdapter";
private static final String DATABASE_NAME = "Random";
private static final String DATABASE_TABLE = "tblRandomQuotes";
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_CREATE =
"create table tblRandomQuotes (_id integer primary key autoincrement, "
+ "Quote text not null );";
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
Here we define all of our variables to be used in the database from the database name right down to the database create statement. We are using final variables because they will never change values and making a variable for table names and the like will later on make our lives easier than hard-coding all of our values and commiting too much (remember the re-usability).
public DBAdapter(Context ctx)
{
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper
{
DatabaseHelper(Context context)
{
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db)
{
db.execSQL(DATABASE_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion,
int newVersion)
{
Log.w(TAG, "Upgrading database from version " + oldVersion
+ " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS tblRandomQuotes");
onCreate(db);
}
}
Above we define a constructor to grab the context of the application and extend that to our
DatabaseHelper
just under the constructor. The
DatabaseHelper
class extends our
SQLiteOpenHelper
which will add greater functionality to management of our SQLite database. The key function that we will see used later on will be
onCreate
which will allow us to execute a SQL statement to create our database.
//---opens the database---
public DBAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}
//---closes the database---
public void close()
{
DBHelper.close();
}
Above we have two key functions that allow us to open and close the database that can be referenced when calling them in our main
.java
file.
//---insert a title into the database---
public long insertQuote(String Quote)
{
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_QUOTE, Quote);
return db.insert(DATABASE_TABLE, null, initialValues);
}
The function above will be processing our quotes when we call them in the main
.java
file. It will also be getting them ready for entry into the database by putting the string
Quote
into a
ContentValues
called
initialValues
which is then inserted into the database table.
public int getAllEntries()
{
Cursor cursor = db.rawQuery(
"SELECT COUNT(Quote) FROM tblRandomQuotes", null);
if(cursor.moveToFirst()) {
return cursor.getInt(0);
}
return cursor.getInt(0);
}
This function will be querying the database table for the number of quotes entered so it can assist the random number generator in how high a number to choose so that we don’t throw an exception. We are using a
rawQuery
for the most part because I am personally not a huge fan of the way Android handles their queries ( having you enter in different parts of the statement in segments and separate them with commas) but I am impressed that they allow you to have full functionality with a native SQL query. The if statement will move the cursor to the first result (if there are many results) and grab the first integer it sees there. If the if statement is not true it will grab the result from the starting position anyways.
public String getRandomEntry()
{
id = getAllEntries();
Random random = new Random();
int rand = random.nextInt(getAllEntries());
if(rand == 0)
++rand;
Cursor cursor = db.rawQuery(
"SELECT Quote FROM tblRandomQuotes WHERE _id = " + rand, null);
if(cursor.moveToFirst()) {
return cursor.getString(0);
}
return cursor.getString(0);
}
}
This function will be called by the main
.java
program to return a random result based on the number of entries into our database. We use the function
getAllEntries
to get the number of quotes and we then tell our random variable that it can go no higher than
id
. In our select statement we then tell it to look for quote
WHERE _id = rand
which is our random number.
After this class file is completed, we have a fully reusable database adapter that is ready to start inserting quotes into the database. We now need to focus on both of the XML files which will be a quick trip down memory lane so code and pictures will be posted and we shouldn’t have to review as everything is basically from the
last post
. Here is the
main.xml
:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/Quote"
/>
<EditText
android:id="@+id/Quote"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/go"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/press"
/>
<Button
android:id="@+id/genRan"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/genRan"
/>
</LinearLayout>
Here is the
strings.xml
file:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="Quote">Please Enter A Quote:</string>
<string name="app_name">Random Quotes</string>
<string name="press">Press Me!</string>
<string name="genRan">Generate Random Quote!</string>
</resources>
Both are pretty straight forward and the only difference from these files and the previous posts is the additional string node in
strings.xml
and the extra button in
main.xml
. Now we have the layout in place with everything where we want it to be it is now our task to code the
QuotesMain.java
file. This file will register our two buttons and attach them to one event handler using a switch statement. Here is the code for our
QuotesMain.java
file:
package com.gregjacobs.randomquotes;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
Here we are importing all of the required items to be able to pull this project together. All of these should be familiar to you from
Graphical Elements
and if they aren’t it is a good post to start on and work your way here.
public class QuotesMain extends Activity {
DBAdapter db = new DBAdapter(this);
EditText Quote;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Capture our button from layout
Button setButton = (Button)findViewById(R.id.go);
Button getButton = (Button)findViewById(R.id.genRan);
// Register the onClick listener with the implementation above
setButton.setOnClickListener(mAddListener);
getButton.setOnClickListener(mAddListener);
}
We now have to buttons being referenced by id and they are
getButton
(which gets the information from the text box and inserts it into the database) and
setButton
(which retrieves a random quote from the database depending on the number of items in the database). These both have the same event handler and decisions on what code to run are made below.
// Create an anonymous implementation of OnClickListener
private OnClickListener mAddListener = new OnClickListener()
{
public void onClick(View v)
{
switch(v.getId())
{
case R.id.go:
db.open();
long id = 0;
// do something when the button is clicked
try
{
Quote = (EditText)findViewById(R.id.Quote);
db.insertQuote(Quote.getText().toString());
id = db.getAllEntries();
Context context = getApplicationContext();
CharSequence text = "The quote '" + Quote.getText() + "' was added successfully!\nQuotes Total = " + id;
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
Quote.setText("");
}
catch (Exception ex)
{
Context context = getApplicationContext();
CharSequence text = ex.toString() + "ID = " + id;
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
db.close();
break;
In the above case statement we can see that we grab the text from the textbox and insert the data into the database using
db.insertQuote
from the
DBAdapter
java class. After a successful insertion we will display a toast that allows us to see what quote was entered in successfully and what the number of quotes in the database are.
case R.id.genRan:
db.open();
//long id1 = 0;
// do something when the button is clicked
try
{
String quote = "";
quote = db.getRandomEntry();
Context context = getApplicationContext();
CharSequence text = quote;
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
catch (Exception ex)
{
Context context = getApplicationContext();
CharSequence text = ex.toString();
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
db.close();
}
}
};
}
This case uses a string variable to reference the random entry we are pulling out of the database using
db.getRandomEntry
. We then display that data in a toast to show that the information was actually grabbed. All of this code when pulled together and displayed on an android screen should look like this:
Entering Text:
Displaying Random Entries:
With an introduction to databases for android covered you can start writing applications that require data storage such as the final product mentioned in the first post. There are a plethora of other features to cover in SQLite databasing for android. More of those will be covered in the next tutorial. Things such as updating your database, deleting entries and getting to know your way around the
DDMS
(Dalvik Debug Monitor Service) are all an essential part of android programming. If you can’t wait till the next article to check these articles on
DDMS
and
Updating and Deleting
. As always if anyone has problems, questions or issues don’t hesitate to ask and I will try my hardest to get back to you before the next post! Until the next time, Happy Hacking!
Text files of code for comparison:
DBAdapter
|
strings
|
main
|
QuotesMain
Articles used for reference:
DevX –
Creating and Using Databases in Android
Android Developers –
Reference Guide
Continue on to Part 4:
Advanced Database/GUI Code & DDMS
| 72
| 50
|
[
{
"comment_id": "160948",
"author": "Jeff",
"timestamp": "2010-07-21T18:13:12",
"content": "I’d really like to follow along with these posts, but do not have an Android device, and I’ve always heard bad things about the emulators.Confirm/deny? What’s a good low cost device to get up and running with?I’ve been waiting for the Streak for way too long…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160952",
"author": "Greg R. Jacobs",
"timestamp": "2010-07-21T18:28:42",
"content": "@Jeff – The emulator on my computer runs completely fine. Plus, it gives you a chance to try out Google’s Android OS! If you follow the tutorials and instead of making the emulator 1.5 change it to 2.1 and you should be able to see most of the new features. As far as devices I am in Canada and was using the HTC Magic but a HTC Dream might do if you just want to develop apps.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160969",
"author": "rob",
"timestamp": "2010-07-21T19:56:55",
"content": "in TSQL the way to get a random row isSELECT TOP 1 NewGuid(), myfield… FROM TABLE ORDER BY 1not sure if sql express supports this",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160975",
"author": "fotoflojoe",
"timestamp": "2010-07-21T20:23:52",
"content": "@JeffYeah, what Greg said. When setting up your eclipse/Android environment, if there are issues with the emulator, it behooves you to work them out and get the emulator running properly.IMHO, the emulator makes the Android development cycle much more efficient, whereas continuously pushing the latest build of your app up to a physical device gets real old, real fast.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160980",
"author": "fm",
"timestamp": "2010-07-21T20:30:13",
"content": "Sure the emulator is slower than a real device, but it works perfectly fine to test any apps besides maybe games.As for a cheap android device, some iDevices can be jail-broken and dual-boot android:http://www.ipodtouchfans.com/forums/showthread.php?t=295287Or you can try ebay for G1’s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160988",
"author": "Jeff",
"timestamp": "2010-07-21T20:40:28",
"content": "@Greg & fotoflojoeSweet! Maybe I’ll get off my butt and actually play with the emulator. Like I said, I’ve only heard bad things… no first hand experience yet…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160998",
"author": "jeditalian",
"timestamp": "2010-07-21T20:57:49",
"content": "damn i need to start paying attention to these. this is about where i started getting lost in java class.and def. try an emulator. you can reset the emulator if you’ve reached the ‘point of no return’ but doing the same with a physical device can be much more frustrating. i haven’t tried any android emulators, but once i start actually reading these guides and trying them out, i’d rather test them on an emulator til they’re perfect, then real world test them in the phone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161049",
"author": "cantido",
"timestamp": "2010-07-21T23:15:54",
"content": "@jeditalianYou can’t make the device misbehave very easily. If your code is bad Android will kill the app.@fotoflojoeSpeaking from experience here; I haven’t found uploading an app to my dev device vs uploading an app to an AVD all that different. Neither is instant however neither take all that long. It’s not like the AVD has any magic features to make it faster i.e. the ability to replace parts of the application on the fly.The real advantage of the emulator IMHO is that you can test different device configs without actually having those devices.@AllYou can get < £100 android phones now. These don't have great screens or any of the fancy coprocessor stuff but they are very good just to test that your app works on the real hardware. The emulator is very poor when it comes to rendering animation etc and is in general \"slower\" so you're less likely to hit race conditions etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161059",
"author": "Erwin",
"timestamp": "2010-07-21T23:51:23",
"content": "Fck java and android just get an N900. This phone and maemo was made for the real linux fans and you can write super fast apps in C/C++ just like you used to. The crosscompiler env for it is also no time to setup since theres a full vmware image on maemos site.I doubt that ANY android based phone would beat the N900 in multitasking and oh yeah why would you run partially closed source android on your n900… Not to mention lame macos based iphones, nokia will pwn them all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161158",
"author": "Dylan",
"timestamp": "2010-07-22T06:28:20",
"content": "Good to see it going beyond the very basics, I can start tuning in now.Good tutorial, and please continue doing them!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161182",
"author": "cantido",
"timestamp": "2010-07-22T09:29:19",
"content": "@Fck javaToo be fair, android devices don’t run “java”. They use the Java compiler, but the bytecode it generates doesn’t actually run on the phone.>and android just get an N900.Android == A shit ton of devices.N900 == one single device.>This phone and maemo was made>for the real linux fansWhat is a “real linux fan”? You mean people that will only run GNU/Linux even though glibc isn’t suited to embedded/mobile devices?>and you can write super fast apps in C/C++Android has an NDK and recent versions do allow native code (native code doesn’t have to be written in C just so you know) to do lots of things that had be passed back to Dalvik via JNI.>crosscompiler env for it is>also no time to setupThe android NDK is a single archive to download.>N900 in multitaskingEh? Android is using the same code in this regard.If anything Android’s lighter replacements for “standard” Linux components would help it in this area.>and oh yeah why would you run>partially closed source android on your n900…Which bits are closed? The market place etc require agreements with google and source for new releases is withheld until it’s ready but you can download and build yourself a complete Android environment.. and you can get the source for all of it it. Oh, and you don’t have to link against GPL libraries…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161210",
"author": "Andy",
"timestamp": "2010-07-22T13:32:30",
"content": "It appears that the _id field in the database starts with 1 and not zero, so the code in DBAdapter.getRandomEntry() as is will never return the last element in the table. It looks like the developer kind of saw that with this code:if (rand == 0) ++rand;Take that a step further and remove the if condition – always add 1 to rand before doing the query and the code will return each of the rows in the database if you press the GenerateRandomQuote button enough times.Another issue in the same method – the getAllEntries() method is called twice for no apparent reason – once to set the value of id, and once to pass into the random.nextInt() method. Modify the random.nextInt() call to:int rand = random.nextInt(id);The code will work as written, but it will perform better with this change (two database hits per call instead of three). Another option would be to just get rid of the id variable completely.Another observation – the getAllEntries() method doesn’t really get all entries, it gets a count of the entries. It should be named appropriately for what it’s doing – getEntriesCount() for example.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161215",
"author": "Tomas",
"timestamp": "2010-07-22T14:01:11",
"content": "I wouldn’t say repeatedly sending it to the device was any more difficult than sending it to the emulator.Process for running on emulator:Run emulatorPush new build with adb install -r appname.apkProcess for running on device:Plug in devicePush new build with adb install -r appname.apk",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161295",
"author": "Cameron",
"timestamp": "2010-07-22T19:49:40",
"content": "My current understanding leads me to believe there is an error with your program. As I understand it Random.nextInt(int param) is inclusive in respect to the 0, but exclusive in respect to the integer parameter. And because you want to generate a number between 1 and param, you would want have rand++ regardless of whether or not the value is equal to 0, otherwise the quote with the highest _id will never be displayed.I am in the process of rewriting the program according to your specifications as we speak, so I don’t know if maybe I’m misunderstanding something or not, please let me know.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161307",
"author": "qwerty",
"timestamp": "2010-07-22T20:04:28",
"content": "What is the best Java/Android book you would recommend to someone who always refused to touch Java even with a 10 mt pole and still has no intention of using it outside the Android world?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161308",
"author": "rube203",
"timestamp": "2010-07-22T20:06:23",
"content": "I appear to be missing something. You set DBAdapter db = new DBAdapter(this); yet your only constructor in DBAdapter is DBAdapter(Context). As a result I had to move the instantiation into the onCreate function where I could provide it with the ApplicationContext.Otherwise, great tutorials, some of the best I’ve seen. Keep up the good work, I’ll be looking for future ones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161327",
"author": "11011san",
"timestamp": "2010-07-22T21:19:21",
"content": "I hate to be a nit pick, but there is a slit miner problem with the way this code works. It will never show the last given quote sense the random is exclusive but this can be fixed by just removing the following the if statement so it always increments the rand integer moving the rand from [0,1-id] to [1,id] wish is the desired range.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161340",
"author": "Sunil Kamat",
"timestamp": "2010-07-22T22:25:09",
"content": "Hi Greg,I am getting an error. It says no such table tblRandomQuotes. It is not able to create a table. What can be the error? I double checked and compared the code with what you have provided and it seems to be the same. I have uploaded the error screenshot here:http://jump.fm/TUHKHThanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161341",
"author": "Sunil Kamat",
"timestamp": "2010-07-22T22:29:01",
"content": "The screenshot link in my comment above has some problem. Please check it here:http://tinypic.com/r/9jnhxs/3",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161359",
"author": "11011san",
"timestamp": "2010-07-22T23:47:41",
"content": "@Sunil KamatI can’t be shore but i think your query is wrong it should be (“SELECT Quote FROM tblRandomQuotes WHERE _id = ” + rand) but what it looks to be on yours is (“SELECT Quote FROM tblRandomQuotes = ” + rand). you may also want to check that your rand is withing range. The _id shouldn’t be 0. This is my best gees from what you showed. I hope this will be of help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161366",
"author": "Sunil Kamat",
"timestamp": "2010-07-23T00:31:32",
"content": "@sanThank you for your reply.But the problem is while inserting the data. It says “no such table: tblRandomQuotes” (screenshot link abv).It goes to this line :Cursor cursor = db.rawQuery(“SELECT COUNT(Quote) FROM tblRandomQuotes”, null);and then throws the exception saying no such table. But it did not give any error while at the table creation.I feel that it is not creating the table itself. The SQL for table creation is same as what is given in the article.Is it working at your end? Have you made any changes apart from the code given in the article?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161372",
"author": "Sunil Kamat",
"timestamp": "2010-07-23T00:46:06",
"content": "OK. I found the problem. Initially while creating the table, I had made a typo. I changed it later after one run. But it is not taking table with the new table name and is giving the previously mentioned errors.Old Name: tblRandomuotesNew Name: tblRandomQuotesShould I run a delete table query to delete the table with typo? Is there any other way to clear the temporarily created tables?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161374",
"author": "cantido",
"timestamp": "2010-07-23T00:48:00",
"content": "@qwertyJava is fine. The language has always been solid and the standard library is broad and (usually) well thought-out. And you get the add bonus that it’s a mature environment without all the Ruby-esque fangirls tweeting non-sense..Anyhow, you don’t really need a book. Look at android examples and you will start to pick it up. You don’t really need to learn Java through and through, any java book you could would discuss the standard libraries etc which you will only be using a fraction of. O’Reilly’s Java Pocket Guide is good to have around for those “I’ve totally forgotten how this works” moments when you need to refresh yourself on some detail about syntax etc.Getting your head around the fact that you don’t really have a main loop and you have to drive everything with “events” is the biggest challenge IMHO.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161393",
"author": "Sunil Kamat",
"timestamp": "2010-07-23T03:43:58",
"content": "OK. Here is what I did to solve my problem but this is not the correct solution. Just a work around to execute the program.Here is what happened:I made a typo in the table name in the create table query and did the first run which created the database and the table (with typo) as required but the “select count(Quote)…” query had the correct table name as given in the tutorial. So it was giving me as error saying table not found. I corrected the table name in the create query and ran the program again, but the error was still the same at the “select count(Quote)…” query.Solution:To make it work, I just changed the DATABASE_NAME to “RandomQ” instead of “Random” and executed the application again with the corrected table name in the create query. Now it referred to the new Database and everything worked fine.The only thing I am not sure about is, how to delete the table created in the “Random” database. Because after one run, it always referenced the old table name, even if the name was changed later in the create query.Basically, it should have created another table in the same DB and the queries should have referenced that table but it always said table not found.Well, the solution was just a workaround to get this program working.I hope the delete table part is covered in the next tutorial.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161415",
"author": "Sackey",
"timestamp": "2010-07-23T06:09:19",
"content": "I don’t know how to delete just the table, but you can reset your virtual device from the “Android SDK and AVD Manager”WARNING: it deletes all user data and starts the device like it’s a fresh install, so it will take just as long as the first time you ran it.You can access the manager from a button in eclipse, choose virtual devices, select the one you’re using and click the button that says “Start…”In the window that pops up, select the “Wipe user data” checkbox.Now if you rename RandomQ back to Random it should work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161418",
"author": "11011san",
"timestamp": "2010-07-23T06:22:29",
"content": "@Sunil Kamatin the onUpgrade() method you have the command to remove the database have you tried running that in the constructor for one build or just the drop command. Another way that i think will work is by changing the DATABASE_VERSION to 2 and it will be run the command ones on the first start. Ether way you chose mack sore that the misspell table and the correct spelled table is there so everything will be removed.Oh and the number is an important part of my name it is an binary ASCII value and san is lick Mr in Japanese. Just a little play on things but dont worry about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161477",
"author": "cantido",
"timestamp": "2010-07-23T14:39:07",
"content": "@11011sanThe word you are looking for is “honorific”.You don’t use honorifics to refer to yourself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161478",
"author": "Sunil Kamat",
"timestamp": "2010-07-23T14:41:07",
"content": "@Sakey @11011sanThanks for your response guys!Well, the DATABASE_VERSION change worked great. Resetting the virtual phones will take out my other programs too which I have. So I guess version change is the best and the most neat option, at least in my scenario.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162067",
"author": "2005732",
"timestamp": "2010-07-26T00:14:15",
"content": "Btw, you get a “table not found” error if you accidently spell it tblRandomQtoes too. THAT typo cost me a good half hour …. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162206",
"author": "Paresh N. Mayani",
"timestamp": "2010-07-26T13:14:30",
"content": "Hello,As i heard that if there is an emulator connected then database is created in /data/data/package name/databases folder.But i have one doubt which is “When i test this quote database application on real android database, then where is the database created? ”pls make my confusion clear",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165243",
"author": "atomjack",
"timestamp": "2010-08-03T19:01:23",
"content": "Great tutorial! If I might make a suggestion, you can do away with the getAllEntries() method in DBAdapter, and let the sqlite engine take care of selecting a random quote for you, like so:public String getRandomEntry() {Cursor cursor = db.rawQuery(“SELECT ” + KEY_QUOTE + ” FROM ” + DATABASE_TABLE + ” ORDER BY RANDOM() LIMIT 1″, null);cursor.moveToFirst();return cursor.getString(0);}",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165673",
"author": "SQRLs",
"timestamp": "2010-08-05T01:26:24",
"content": "Ok, first off THANKS for having tutorials like this available. They’re extremely valuable to scipt kitties like myself. With that said, I’ve gone over the code a million times and while it seems I’ve followed your example to the t, and while Eclipse doesn’t show a single red x or squiggle, when loaded on my emulator or droid i get the same result. Everything looks like it should, I type in a quote, press the button to store and I get a message saying the app’s stopped unexpectedly try again later, and I’m forced to close. Any ideas why this might be??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165781",
"author": "Noob13",
"timestamp": "2010-08-05T14:44:08",
"content": "Is there a way to pre create the DataBase and put it in assets for exemple then copy it on the phone during the install ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165855",
"author": "Greg R. Jacobs",
"timestamp": "2010-08-05T17:54:04",
"content": "@Noob13 – Good Question! I will get back to you on that but for now what you could do is attach your device to your computer and if it is recognized bu DDMS you could push the database onto the current device. (Good example being the Part 4 of this tutorial and you would use the icon next to the one mentioned to push it onto a device)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166453",
"author": "toby",
"timestamp": "2010-08-07T11:32:47",
"content": "Hi, thanks for the great tutorials.just one remark:shouldn’t we use the static final variables like DATABASE_TABLE instead of tblRandomQuotes?In this case, reusing / renaming will be easier (only have to care about the string variables) and even prevents you from some typos…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166944",
"author": "Greg R. Jacobs",
"timestamp": "2010-08-09T02:45:08",
"content": "@Toby – Yes, that is the correct way of programming the class to be completely reusable. This was done in a quick and dirty style to show the abilities of android and how easy it is to program in the language. I strongly encourage people who have suggestions to reprogram anything submitted here to make it better & faster. This tutorial is only scratching the surface of what Android can do. I will admit when programming that class I slipped back into the SQL mindset and should have used variables instead of table names etc. Sorry about the confusion and to get off my tangent, you are completely right :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "172398",
"author": "Fred",
"timestamp": "2010-08-23T08:49:37",
"content": "Isn’t it possible to get a PDF version of the whole how-to with correct text formatting caus’here with WP it’s really painful to read and use..Thanks in advanceFred",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "176835",
"author": "Rodney",
"timestamp": "2010-09-03T18:07:02",
"content": "I love these type of examples, thank you. I have been trying to create an app, and am working with a database. I want to view the database directly. How can you do that in the emulator?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "177129",
"author": "AndroidRetard",
"timestamp": "2010-09-04T11:00:36",
"content": "I don’t know if I’m doing something completely stupid. I think I followed the example exactly but am getting quite a fundamental error when trying to compile”public DBAdapter open() throws SQLException{…”I’m getting”Type mismatch: cannot convert from DBAdapter.DatabaseHelper to DBAdapter”when trying to return “this”.I had to change”private DatabaseHelper DBHelper;private SQLiteDatabase db;”to”private static DatabaseHelper DBHelper;private static SQLiteDatabase db;”but don’t think this is the cause?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "179735",
"author": "AndroidRetard",
"timestamp": "2010-09-10T08:52:45",
"content": "Doh!Was a bracketing problem, I got confused because I am using standard bracketing notation and was not closing my DatabaseHelper task properly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "181516",
"author": "lavino",
"timestamp": "2010-09-15T08:06:35",
"content": "Where can I set up such nice looking emulator skin? My emulator is so fugly with nothing but a black box for the display and the keyboard and etc is on the right hand side…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "181781",
"author": "lavino",
"timestamp": "2010-09-16T05:14:20",
"content": "Anyone know how to rename a class and the java file after creating it? I stupidly named Adapter to Adpater when creating the class… I first thought I was doing something wrong.. LOL. Or there is no way but to delete the class and do everything from scratch again?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "184370",
"author": "Hamz",
"timestamp": "2010-09-22T23:49:25",
"content": "Great tutorials! Just going off making your code sweeter:On generating random quotes, you can save a few lines by writingint rand = random.nextInt(getAllEntries())+1;Instead ofint rand = random.nextInt(getAllEntries());if(rand == 0) {++rand;}It wasn’t generating all quotes for me cause’ I don’t think the SELECT COUNT was counting all the quotes correctly and was always leaving out the last quote inserted. So the +1 fixed that for me and eliminated the need for the if statement. Awesome site! Keep your tutorials coming, for an android writer, you’re easy to understand. Peace.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "185168",
"author": "Stephen Pengilley",
"timestamp": "2010-09-24T16:34:38",
"content": "Thanks for the tutorial!I also get a crash when clicking the button to put the typed quote into the database. I can’t put a toast anywhere which will appear before the crash UNLESS i click the other button. This returns nullpointerexception (I assume because there are no quotes).I would have thought that the error would have been within the case statement (if it works for one button and not the other) but i don’t think it isAny ideas?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "188636",
"author": "playplay1978",
"timestamp": "2010-10-01T08:24:00",
"content": "I did as being written in this tutorial but when the app’s run in emulator, it gives me ” Sorry!The application RandomQuotes (package…) has stopped unexpectedly. Please try again”Can anyone help me on this?I can’t continue with next tutorial without solving this issue.Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "190182",
"author": "Jim",
"timestamp": "2010-10-03T21:25:04",
"content": "Thank you for the tutorial!Works great!~J",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "190595",
"author": "Ben",
"timestamp": "2010-10-04T13:44:57",
"content": "playplay1978, it was crashing on mine too, because of typos I did in my package name, I double checked that AndroidManifest.xml, DBAdapter.java and QuotesMain.java all have the same package name. Because of that error I also had “R cannot be resolved”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "192524",
"author": "Dave",
"timestamp": "2010-10-07T00:09:54",
"content": "Many thanks for the great tutorial, Greg!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "296367",
"author": "Jared",
"timestamp": "2011-01-04T22:56:22",
"content": "As mentioned a couple times…int rand = random.nextInt(getAllEntries());should be….int rand = 1 + random.nextInt(getAllEntries());The reason is due to databases being 1+ and java counting 0+Unless I’m vastly mistaken…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307999",
"author": "Martin",
"timestamp": "2011-01-18T05:29:56",
"content": "Thanks for these tutorials. I’m having a slight issue though. In my QuotesMain.java I get a bunch of “DBAdapter cannot be resolved to a type” errors. I’ve checked everything against the pictures (granted, I am very sleep ATM), but can’t seem to find out why this is being caused. If anyone has any help, it’d be much appreciated!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.242946
|
||
https://hackaday.com/2010/07/21/break-out-the-two-ply-ecobot-iii-poops/
|
Break Out The Two-ply, Ecobot III Poops
|
Jakob Griffith
|
[
"News",
"Robots Hacks"
] |
[
"ecobot",
"food",
"hydrogen",
"MFC",
"microbial fuel cells",
"poop",
"robot",
"self sustaining",
"waste"
] |
[youtube
http://www.youtube.com/watch?v=qU6zi1_aZiw&feature=player_embedded%5D
Imagine our surprise when
this article
on
Ecobot III
and the
disgusting
video above showed up in our feed. The robot can theoretically be self-sustaining forever, so long as it has a food source. Yes, you read correctly, food.
Typical
robots relying on grub
burn the biomass to produce heat/steam/energy, but Ecobot III actually digests using Microbial Fuel Cells and extracts energy in the form of hydrogen.
The process isn’t very efficient (yet), and of course waste must be excreted, but we’re inching closer and closer to the day our robot overlords are invincible. The project has come to a halt (we can’t imagine why), but you can still read up
on the process
, and meet Ecobot’s brothers:
II
and
I
.
Related: We’re all going to die,
Carnivorous robots
.
| 24
| 24
|
[
{
"comment_id": "160931",
"author": "killerabbit",
"timestamp": "2010-07-21T17:05:12",
"content": "Nuke it from space. Now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160933",
"author": "therian",
"timestamp": "2010-07-21T17:13:28",
"content": "overclock it, so it shit fountains all over the place",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160934",
"author": "wingding",
"timestamp": "2010-07-21T17:16:41",
"content": "What a shitty video, in a good way!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160936",
"author": "gkphotog",
"timestamp": "2010-07-21T17:24:45",
"content": "How long before we see the 2 Bots 1 Cup video?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160940",
"author": "bad thought",
"timestamp": "2010-07-21T17:42:01",
"content": "humm 2 robots one cup anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160942",
"author": "barry99705",
"timestamp": "2010-07-21T17:55:12",
"content": "Okay, show of hands. Who clicked on the video just to see a robot poop?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160943",
"author": "Arthur",
"timestamp": "2010-07-21T17:55:42",
"content": "Not quite sure why this is offensive, I mean, Its just another chemical process… Just like fire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160945",
"author": "PacoBell",
"timestamp": "2010-07-21T18:04:02",
"content": "I think I remember some art exhibit an the SF MoMA of a giant deconstructed digestive system that attempted to mimic the human gut. It too produced real fecal matter. I’ve gotta find a link to that article one of these days…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160946",
"author": "PacoBell",
"timestamp": "2010-07-21T18:07:28",
"content": "Found it:http://gizmodo.com/5145287/cloaca-no5-is-a-monster-pooping-machine",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160947",
"author": "Punkguyta",
"timestamp": "2010-07-21T18:07:44",
"content": "“Okay, show of hands. Who clicked on the video just to see a robot poop?”Me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160954",
"author": "Supersparky",
"timestamp": "2010-07-21T18:39:19",
"content": "What a crappy robot… Let’s call it “sh*tty sh*tty plop plop!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160958",
"author": "d_mcintire",
"timestamp": "2010-07-21T18:53:18",
"content": "“Okay, show of hands. Who clicked on the video just to see a robot poop?”Myself as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160967",
"author": "dnny",
"timestamp": "2010-07-21T19:46:00",
"content": "this is lame compared to Cloaca.That machine really poopshttp://www.wimdelvoye.be/cloacafactory.php#",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160982",
"author": "Halexander",
"timestamp": "2010-07-21T20:32:59",
"content": "The Cloaca machine does not produce energy in the process of producing poop. Thus, it is fake poop, since all the valuable items are still in the poop. And yes, I too predict seeing something like a Cloaca&Ecobot/1cup… since it does make sense. Unless machines develop a sense of taste as well… then we’d see machines puking at the video just like their human peers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160986",
"author": "andres",
"timestamp": "2010-07-21T20:36:20",
"content": "they’re going to have to rewrite the books. “everyone poops” to “everything poops”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161012",
"author": "Hirudinea",
"timestamp": "2010-07-21T21:30:27",
"content": "You know there is still a lot of energy left in real shit, I mean detritovores (sp) and bacteria love to eat it, so why don’t we just feed the robot our shit to keep it powered, 1 girl, 1 bot, free energy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161013",
"author": "osgeld",
"timestamp": "2010-07-21T21:33:55",
"content": "“Okay, show of hands. Who clicked on the video just to see a robot poop?”add me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161041",
"author": "PacoBell",
"timestamp": "2010-07-21T22:40:06",
"content": "@Halexander “The Cloaca machine does not produce energy in the process of producing poop. Thus, it is fake poop, since all the valuable items are still in the poop.”It may not STORE energy, but it sure consumes it. There are real live bacteria in this machine as well that eat biomass and belch out methane and other gasses.http://www.lacan.com/frameXIX7.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161128",
"author": "Fuckin rich",
"timestamp": "2010-07-22T04:09:32",
"content": "I agree. Pull off and nuke it from orbit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161136",
"author": "otacon2k",
"timestamp": "2010-07-22T04:40:41",
"content": "And these shall become our robot overlords? Nah.I hate the thought of not only having to dodge dog poo, but robot poo as well. Hopefully they will use toilets by programming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161175",
"author": "userjjb",
"timestamp": "2010-07-22T08:27:36",
"content": "@andres “they’re going to have to rewrite the books. “everyone poops” to “everything poops””Mildly relevant:http://www.youtube.com/watch?v=VuqyZC2haBI",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161201",
"author": "David Findlay",
"timestamp": "2010-07-22T12:20:53",
"content": "Why do people continue to develop technology towards what will eventually destroy us? We’re seriously working to develop Cylons, and it seems some are working deliberately in that direction!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161233",
"author": "Rob",
"timestamp": "2010-07-22T15:27:23",
"content": "*raises hand*,… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161236",
"author": "PacoBell",
"timestamp": "2010-07-22T15:35:27",
"content": "@David Findlay How do you know the Cylons aren’t already here and this is their first steps toward making skinjobs o_O?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.458262
|
||
https://hackaday.com/2010/07/21/led-matrix-with-a-gross-of-pixels/
|
LED Matrix With A Gross Of Pixels
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"arduino",
"decade counter",
"marquee",
"matrix",
"shift register"
] |
This LED matrix
is arranged in a 24×6 pattern for message scrolling. There’s no etched boards here, making us wonder where [Syst3mX] found protoboard this long. He’s using an Arduino to drive the demonstration (clip after the break) but you can use any microcontroller with this setup. That’s because he’s using three shift registers for column data and a decade counter for row scanning, requiring just five control pins.
While you’re going to the trouble of ordering components, maybe you should try your hand at building
a touch sensitive LED matrix
too.
[youtube=http://www.youtube.com/watch?v=wNNTbhYPA94]
| 19
| 19
|
[
{
"comment_id": "160914",
"author": "PowerPoint-Projectors",
"timestamp": "2010-07-21T16:09:40",
"content": "Sweet I want one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160915",
"author": "jeff-o",
"timestamp": "2010-07-21T16:20:03",
"content": "Oh, you can buy 12×12 sheets of perfboard pretty easily. Usually you can find it where the plain copper clad boards are sold.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160918",
"author": "Brennan",
"timestamp": "2010-07-21T16:31:52",
"content": "Pretty sweet, the LED’s look damn bright in the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160920",
"author": "John",
"timestamp": "2010-07-21T16:38:24",
"content": "and the source file is….chan chan chan chan…where????",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160925",
"author": "Rockrat",
"timestamp": "2010-07-21T16:51:24",
"content": "This is relevant to my interests. I write software (Flex, AS, AIR) and just got my first Arduino board. I am wanting to learn how to make a simple countdown timer using the arduino to power a 7 segment led matrix. Does anyone know of a good starting point?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160926",
"author": "Entropia",
"timestamp": "2010-07-21T16:51:59",
"content": "Some students at my uni made a LED scroller or discrete LEDs. Standard 5 mm LEDs, and the board has about one meter long in real life, with character height about 10 centimeters. I never saw the actual construction because the LEDs are behind a smoked persplex glass but that must hundreds of LEDs!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160937",
"author": "Tom",
"timestamp": "2010-07-21T17:28:24",
"content": "@ Entropia – Thousands… About 4 thousand I’d say from your description : opRe: Long Perfboard, check Farnell, Roth Elektronik make some pretty (relatively) massive peices:100mm * 580mm(!)http://uk.farnell.com/roth-elektronik/re210-s3/pcb-prototype-re210-s3/dp/1221151",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160939",
"author": "zerth",
"timestamp": "2010-07-21T17:40:31",
"content": "@rockrathttp://www.hacktronics.com/Tutorials/arduino-and-7-segment-led.htmlThat’s for a common anode 7-seg, if you have a common cathode, it’ll be different.You might want to get some shift registers if you don’t want it to take up half your pins.http://www.arduino.cc/en/Tutorial/ShiftOut",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160944",
"author": "Jac Goudsmit",
"timestamp": "2010-07-21T18:03:13",
"content": "I’m thinking with a little tinkering this could be changed into a cheap system to control a huge block-controlled model train track with little hardware and little wiring.Think “10 speeds” instead of “10 LEDs per column” and think “24 blocks of track” instead of “24 columns”.Hmmm…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160950",
"author": "DanG",
"timestamp": "2010-07-21T18:22:13",
"content": "On a related note, I stumbled across an interesting technique for dimming LEDs called Bit Angle Modulation.This technique works very well for controlling large LED Matrices because you only have update the LEDs once per bit of brightness resolution. IE, for 16 shades of brightness, you only have to update the LEDs 4 X refresh rate times.http://www.batsocks.co.uk/readme/art_bcm_3.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160951",
"author": "D_",
"timestamp": "2010-07-21T18:26:16",
"content": "@John- Would this be the file you seek?http://www.instructables.com/files/orig/FYN/KCVK/GBVJ7WP0/FYNKCVKGBVJ7WP0.txt",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160971",
"author": "walt",
"timestamp": "2010-07-21T20:13:50",
"content": "allow me to save you the trouble of finding out (the hard way) what happens if you actually click the link.Get more out of Instructables, by Signing up for a Pro membership!PDF DownloadsDownload and customize PDF’s of any Instructable. Learn more »Digital PatchesDid someone make something really cool? Learn more »All Steps ViewingView all steps of an Instructable on the same page. Learn more »Rich Text EditorGet a full featured WYSIWYG rich text editor. Learn more »Less AdvertisingMore good stuff.Private ProjectsMake your Instructables Private and get a special link for sharing.Favorites List\tPro ForumsSkip »",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160983",
"author": "Vadim",
"timestamp": "2010-07-21T20:34:37",
"content": "You don’t need to be a pro member, you can just sign up for free and get the source code",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161014",
"author": "osgeld",
"timestamp": "2010-07-21T21:35:17",
"content": "yea fill out a username and password bam you can see full articlesif that is too much for you then do you really need to be attempting to make anything?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161216",
"author": "cgmark",
"timestamp": "2010-07-22T14:07:36",
"content": "@rockratWhile you can drive LED directly from the arduino like in this article it really isn’t the most practical/easy way to do it.There are LED driver IC that require only a few pins on the arduino and will control hundreds of LED just by sending the chip the correct commands.For standard digital displayhttp://www.maxim-ic.com/datasheet/index.mvp/id/1339This one does text and has 104 ASCII letters ready to use.http://www.maxim-ic.com/datasheet/index.mvp/id/3379",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161234",
"author": "Rockrat",
"timestamp": "2010-07-22T15:28:55",
"content": "@cgmarkI had purchased the MAX7221 or its variant a while back to implement this, but I got stuck trying to figure out how to hook it up to the arduino. I know I need to use the arduino’s serial outs, but I didn’t know which pins went to which on the chip. I think I have the software figured out, but is it possible to consistently give commands via the usb (like ever 500 milliseconds) to update the display or is this writing to many times to the arduino?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161242",
"author": "Brennan",
"timestamp": "2010-07-22T16:04:15",
"content": "Can someone explain to me why using a 4017 counter chip is a better solution than just using 6 output pins on the Arduino? If you still have to manually send a pulse to the 4017 to scan the rows there doesn’t seem to be any advantage except for freeing up 4 output pins on the micro. I suppose it would make the software a tiny bit easier/faster to send 1 pulse to the 4017 rather than controlling the state of 6 output pins, but is that the only reason?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163158",
"author": "TiredJuan",
"timestamp": "2010-07-28T21:16:07",
"content": "@Brennan: Yeah, it’s used to free up pins. (perhaps for sensors or more shift registers etc)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "165632",
"author": "George Johnson",
"timestamp": "2010-08-04T22:15:23",
"content": "Vector makes the best pad per hole boards, some quite long too",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.401657
|
||
https://hackaday.com/2010/07/21/complete-the-hack-a-day-survey-win-a-shirt/
|
Complete The Hack A Day Survey, Win A Shirt
|
Caleb Kraft
|
[
"News"
] |
[
"content",
"feedback",
"quality",
"Rant",
"survey"
] |
Take our
reader survey
. Do it. Do it right now. Do you think we should run more articles on the dietary needs of Llamas? Here is your chance to let us know. We got a lot of great feedback from
[Jason]’s post
, and now we’re ready for more. We’ve put together 10 quick questions that will help us get a feeling for what you want. We will be choosing 5 participants at random to give free
t-shirts
(the basic logo one).
Update: While we wait for our survey slave to get the changes made, please just put something in the fields that are mandatory(questions 7-9). Even if you put “no opinion”, we’ll get good info from the rest of the survey.
| 77
| 50
|
[
{
"comment_id": "160864",
"author": "extermin8tor",
"timestamp": "2010-07-21T13:45:02",
"content": "I think that its great that hackaday is taking opinions from readers. I think that the survey shouldnt have had the (*)starred questions compulsory, I have no idea about names of writers on the site and I think that it would have been better for people to vote top 10 hacks out of say 20 that were picked by the Hackaday staff.Thats all :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160866",
"author": "Nemo",
"timestamp": "2010-07-21T13:50:58",
"content": "The survey is slightly broken, you cannot specify something in “other” without choosing one of the checkboxes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160867",
"author": "azog",
"timestamp": "2010-07-21T13:53:11",
"content": "You should make questions 7, 8 and 9 optional:#7 – I’d be hard pressed, out of the thousands of posts that must be, to pick three. You should be happy I just come here as often as I do :)#8 – Unless it’s a name like Adam Savage, chances are I am not going to know someone’s name. Or would you rather me post something like “that guy who made the relay computer”, where there are at least three matching criteria for that?#9 – what if I have no suggestions for the site?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "160871",
"author": "Caleb Kraft",
"timestamp": "2010-07-21T13:56:38",
"content": "@azog,about being optional, sorry. I can’t get it changed for a while, so please just put “no idea” or something in there.@Nemo,Sorry, I’ll try to get that fixed A.S.A.P.",
"parent_id": "160867",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "160868",
"author": "Ian",
"timestamp": "2010-07-21T13:55:45",
"content": "Question 3 is unanswerable. See comment from Nemo.Question 8, likewise. (No way to say ‘Nobody’).Ian.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160869",
"author": "catzburg",
"timestamp": "2010-07-21T13:55:51",
"content": "@azog,#7 just pick one (or 3)#8 so say I don’t know, or don’t care to pay attention#9 so say that… duh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160870",
"author": "Brennan",
"timestamp": "2010-07-21T13:55:59",
"content": "I got most of the way through the survey until I realized questions 7-9 are mandatory. Seriously, HAD? You expect me to randomly think up my top 3 posts I have seen here, and remember what they were called? And I don’t care who writes the articles, I just read them. I certainly don’t know two people to write in for #8. Let me finish the survey without answering these questions because I don’t have anything to contribute for #7-8.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160873",
"author": "Sheldon",
"timestamp": "2010-07-21T14:09:07",
"content": "Well, I had no problems with it, although I want to know where my “a few times a day” option is?! ;-)(luckily I simply track the RSS so get the post as it happens)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160874",
"author": "eric",
"timestamp": "2010-07-21T14:10:24",
"content": "Questions 3 (Which of these items would you like to see HackADay add or expand upon?) and 4 (How often would you like HAD to post new articles to the site?) imply that we viewers must want MORE of HAD.Remember when MORE meant including an ipod holder made of Lego?I’d much rather have less if the articles were of higher quality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160875",
"author": "Tom",
"timestamp": "2010-07-21T14:14:06",
"content": "I want to see 1-2 posts a day, maximum.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160876",
"author": "Heatgap/Ho0d0o",
"timestamp": "2010-07-21T14:17:32",
"content": "To be honest, you guys do a great job at this site. It is one of the few sites I actually check back on every fifteen to ten mins to read and look for new articles.Love the site have been coming here all day for years and will continue to come view your articles and content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160877",
"author": "zzzomb",
"timestamp": "2010-07-21T14:23:23",
"content": "Doesnt confirm that anything was submitted, just bounces back to the main HAD page. I will lose sleep from the intense fear of not being eligable to cover my pasty white skin with a HAD tshirt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160879",
"author": "Gottabethatguy",
"timestamp": "2010-07-21T14:25:31",
"content": "Thanks for listening to your readers.There was no option for less content than we have now. I would like to see less and higher quality content with proper fact checking, than more fluff just tossed in to make my rss reader tell me I have new content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160881",
"author": "Sam",
"timestamp": "2010-07-21T14:33:30",
"content": "I think we should follow Gottabethatguy lead and just post our survey answers here. A public vote is better.I second the less content, more quality idea.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "160883",
"author": "Caleb Kraft",
"timestamp": "2010-07-21T14:37:06",
"content": "@Sam and Gottabethatguy,Feel free to post your thoughts here! Please also go readJason’s letter to the communityexplaining why we won’t be decreasing the quantity of posts.",
"parent_id": "160881",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "160882",
"author": "A long time fan",
"timestamp": "2010-07-21T14:35:32",
"content": "Replied, pretty much told you to stay as you are, get an IRC channel and some more traditional hacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160884",
"author": "Myke",
"timestamp": "2010-07-21T14:39:12",
"content": "This question requires an answer.3. Which of these items would you like to see HackADay add or expand upon?Which of these items would you like to see HackADay add or expand upon? Software HacksHacks for BeginnersLife HacksRound up Posts (i.e. top 25 iPad hacks)Tutorial Series (Beginner to Advanced)Other (please specify) “Advanced Hacks”THIS IS FUCKING STUPID",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160885",
"author": "wtf",
"timestamp": "2010-07-21T14:40:25",
"content": "thank you for caring. somehow I feel more a part of this site now and haven’t even contributed.thank you",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160886",
"author": "Dan Fruzzetti",
"timestamp": "2010-07-21T14:42:13",
"content": "I forgot to add one answer; i hope a moderator reads this post.I think you should taphttp://www.jameco.comand ask if their long-time contributor Forrest Mims (engineer, hobbyist tinkerer) has anything to contribute.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160887",
"author": "Frollard",
"timestamp": "2010-07-21T14:43:25",
"content": "I think its ridiculous the questions on there — they are all stacked. People complain there are too many articles already — so the question “how many would you like?” is ‘same as now’ ‘more than now’ ‘lots more than now’. If you want statistically viable data you must offer the WHOLE range. ‘lots less’ ‘little less’ ‘same’ ‘more’ ‘lots more’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160888",
"author": "adam",
"timestamp": "2010-07-21T14:44:01",
"content": "I second the IRC channel. That’d be a handy convenience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160893",
"author": "Kuba",
"timestamp": "2010-07-21T14:54:35",
"content": "This question requires an answer.1. How often do you visit HAD?but i use rss and don’t visit at all or visit everyday, depending on interest in commentscan’t pick a valid answer",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160895",
"author": "Haku",
"timestamp": "2010-07-21T15:06:41",
"content": "Question 4 should have an option saying “1-5” because I prefer quality over quantity, I keep coming back here for the quality/inspirational hacks rather than the quantity of them and would prefer 1 quality hack over “how to do xyz with an Android phone” or “how to blink an LED with an Arduino”.I will fill in the survey, but not in it’s current form, it needs tweaking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160896",
"author": "TJ",
"timestamp": "2010-07-21T15:08:38",
"content": "I guess I need to do an instructable on how to fill out the HaD survey and then hope it gets picked up by HaD…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160897",
"author": "fotoflojoe",
"timestamp": "2010-07-21T15:08:46",
"content": "Bazinga.I know, that wasn’t helpful.HaD, keep up the great work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160898",
"author": "Haku",
"timestamp": "2010-07-21T15:09:00",
"content": "Meant to say “1 quality hack over 5 of ”Which leads onto another point; the ability to have up to one minute to edit your post would be handy, too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160899",
"author": "icebrain",
"timestamp": "2010-07-21T15:09:57",
"content": "@adam: Damn, I should have put that one too, IRC ftw.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160901",
"author": "adamziegler",
"timestamp": "2010-07-21T15:11:17",
"content": "IRC is a great idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160902",
"author": "Ivan",
"timestamp": "2010-07-21T15:14:52",
"content": "… in any case, just five t-shirts are not enough!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160905",
"author": "w0lv3n",
"timestamp": "2010-07-21T15:23:02",
"content": "Where is the option for viewing the site 10+ times day?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160908",
"author": "thlip",
"timestamp": "2010-07-21T15:48:39",
"content": "yeah I wish I had thought of IRC as well. Like Caleb said they will look at the comments so no need to worry about missing it in the survey I suppose.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160909",
"author": "Gottabethatguy",
"timestamp": "2010-07-21T15:54:14",
"content": "Caleb, I read everything that gets posted on this site, hence my frustration at times. I’ve read that letter, and responded to it.If you don’t want your readers opinions on how to make the site better why ask for them in the first place?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160910",
"author": "zypher",
"timestamp": "2010-07-21T15:59:23",
"content": "Apparently they should survey us about how we like our surveys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160917",
"author": "Ben Wright",
"timestamp": "2010-07-21T16:23:53",
"content": "You should look into getting t-shirts screen printed shirts cheaper, if you can only splurge on 5 to promote your website. My dad gets shirts screen printed for <$4 each 2 color front and back printing. In this ecconomy if you can't find a supplier for under $5 a shirt, you didn't get off your computer/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160919",
"author": "svofski",
"timestamp": "2010-07-21T16:36:14",
"content": "I’d answer “1-2 posts per day too”. But I don’t think every question will be understood literally. If the majority answers the minimum quantity in that question, HaD may take it as a hint. It appears that they’re under pressure from (…) to POST MOARRR, EXPAND, GROW.. etc, that kind of bullshit.. and have to invent ways to satisfy the (…) and not to piss off the old-time readers, all at the same time. Tough job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160921",
"author": "osgeld",
"timestamp": "2010-07-21T16:38:35",
"content": "@Gottabethatguy sounds like you need to learn a little self control, just cause there is a link on your screen you dont have to click it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160941",
"author": "ehrichweiss",
"timestamp": "2010-07-21T17:45:22",
"content": "I don’t play the “and possibly win a shirt” game. My time is worth more than that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160953",
"author": "itwork4me",
"timestamp": "2010-07-21T18:29:15",
"content": "I am sure this is simply a scam for them to generate hits for affiliate sites. As stated above…you’re lucky I read your site. 5 shirts, come on! Not worth my time…And if you read this far, it wasn’t worth yours either.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "160957",
"author": "Caleb Kraft",
"timestamp": "2010-07-21T18:48:17",
"content": "@itwork4me,Nope, not a scam. We thought you guys would like the ability to participate in our growing process. As svofski pointed out, the balance is tough. the free shirts were just a bonus. We don’t share those email addresses with anyone else. Besides, you entered your email address in wordpress to make that comment. If we really needed to sell them, I think we could do better than an un-required field on our survey.",
"parent_id": "160953",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "160955",
"author": "Sam",
"timestamp": "2010-07-21T18:42:54",
"content": "@Cabel Just because HAD says that it’s not going to lower the quality of articles doesn’t mean they’re going to actually follow through. I would like the quality to increase. HAD will do what they have to for their site to be popular.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160963",
"author": "Vonskippy",
"timestamp": "2010-07-21T19:18:20",
"content": "I was surprised there was no question asking how many articles by drooling Apple Fanboys bashing the Android do we want.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160965",
"author": "thlip",
"timestamp": "2010-07-21T19:22:31",
"content": "@ehrichweiss,My time is worth more than a shirt too. But I would have done the survey if no shirt was given out. I love this site as do most people who post comments here. I think most people would think having input would be worth their time, at least if they enjoyed the content. The shirt to me really is a bonus on top of that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160966",
"author": "oef.soldier.medic",
"timestamp": "2010-07-21T19:45:29",
"content": "well I must admit that even here, deployed in the afghani desert, I find myself checking HAD whenever I can….then I make some calls home. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161023",
"author": "Jukus",
"timestamp": "2010-07-21T21:43:23",
"content": "Had is great, and having more comunity interaction will only be a good thing. I also think a more detailed census on your users will help you tailor your topics, ads and maybe even highlight some new editing talent.Another idea is user sponsored projects where projects are agreed, a ringer is brought in and shares out the workload across the comunity and maybe even costs too. This site is perfect for atracting very driven and innovative people, if had can coordinate some colaberations it could provide content, community interaction, experience for those involved and maybe even some world class open source products",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161026",
"author": "Ryan",
"timestamp": "2010-07-21T22:00:24",
"content": "Is the link broken?? Even if I’m too late and they’re out of shirts, I still want to post… :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161028",
"author": "Blind",
"timestamp": "2010-07-21T22:12:37",
"content": "Since people are posting what they said in the survey, the main part:Hack A Day used to turn down submitted links to projects because another site already linked to it. Those days, they wanted to be a site that had original (-ish) content that you didn’t just find anywhere else. Whether or not this made sense from a marketing point of view or not, it was nice from a readers point of view. I could browse HaD and not feel like I am still reading the RSS feed for Make or any other similar sites. there might be some duplication, but for the most part, it was kept to a minimum.Move forward a few years and HaD starts posting articles it itself had posted only a year prior. If the site doesn’t care enough to do a 2 second check in it’s database, why should I care enough to come here and read it?Stop posting 10 articles a day about any random bullshit you are typing about; i can find that anywhere online. Go back to quality projects. Go back to one post a day (with a second of minor links compiled). We all know where engadget and make and gizmodo and this old house and whatever else can be found, stop trying to be those other sites.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161031",
"author": "Blind",
"timestamp": "2010-07-21T22:14:39",
"content": "god… my writing is just awful there…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161034",
"author": "dick twitch",
"timestamp": "2010-07-21T22:23:03",
"content": "i agree with the HAD readers above adam Z1) feedback to confirm receipt of my submited questionaire would have been nice2) forest mims would make an excellent contributor if you could convice him3) another electronics/hacking/project design god that i would like to see contribute is albert ricci bitti (http://www.riccibitti.com), again if you could convince him ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161044",
"author": "Steve",
"timestamp": "2010-07-21T22:54:48",
"content": "I filled out the survey, but honestly I don’t know why. This site has demonstrated time and time again that they only care about what we have to say if it’s profitable. Just look above one of your readers (nore then one actualy) said he would like less quantity and more quality and you reply with a flat ‘NO; please see already posted reasons why’ I’ll tell you why because less content means less advertising revenue. Infact if you read the coments on this site (and I know you do Caleb) I’m sure you can see thatthe general sentiment has been against more content since you started posting more content. Why bother asking if you don’t care to hear what we have to say? I and others, most of whom have been around here quite a bit longer then you, have been telling you what we want all along, you obviously heard because you structured the survey in a way that was biased. Now I’m not trying to be a hater, infact I’ve been reading this site since Eliot started it years ago, I even bought my bus pirate from seeedstudio to support this site even though the shipping takes forever and I could have ordered it from sparkfun and had it in a few days. This site is a pale ghost of what it used to be, I only check back because every once in a while you’ll post something good. And to everyone saying our time is worth more then a tshirt; of course it is. The time we waste here is worth far more to Caleb and hackaday then it is to us, because that’s how they get paid. Think about that as you flat out tell your readers your not interested in there input, without us you’d be out of a job.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "161089",
"author": "Caleb Kraft",
"timestamp": "2010-07-22T02:51:06",
"content": "I’m going in backwards order I guess.@Steve and Gottabethatguy,It was not my intention to give a “slap in the face”. I was pointing to where the boss (Jason) said we are growing. The reason he posted that was to point out that hackaday needs to make more money, so an expansion is in order. I felt that reading it from the boss’s mouth was a much better solution than me replying with a less eloquently written paraphrasing.I really don’t worry about my job security here. I have a day job for that. I do this because I love this site. I want to see it survive this “expansion”. I’m really trying to be a liaison between the business side and the readers. I’m not completely sure how best to do that, but I’m still going to try.",
"parent_id": "161044",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161053",
"author": "Gottabethatguy",
"timestamp": "2010-07-21T23:23:10",
"content": "Thanks Steve, you put that more eloquently than I could have. Caleb’s comment was like a slap in the face, when all I was doing was offering my honest opinion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161071",
"author": "Blind",
"timestamp": "2010-07-22T01:01:12",
"content": "Caleb, he says nothing in the letter about not reducing the number of posts per day. He says nothing that conflicts at all with the request of “post less and post better”.If you aren’t going to read his letter, don’t be an ass when you are responding to other people and claim that he already addressed the point.Frankly, all of what has been happening lately (this survey, the letter, the copyright issue on user videos at youtube) is getting to a bit of a critical mass. Yeah, it’s a business, I get that. And yeah, one reader doesn’t really matter in the grand scheme. I’m just about decided to walk away from this site that I’ve been following for years though. I’ll find the projects elsewhere ultimately and if I miss out on condescending owners I’m sure I’ll find a way to deal.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "161088",
"author": "Caleb Kraft",
"timestamp": "2010-07-22T02:43:35",
"content": "@blind,I didn’t say anything condescending. This is a common issue with online communication. Tone isn’t conveyed well, especially when you try to avoid stating opinions. Jason posted that this is a business that needs to grow. I’m trying to strike a balance between that growth and keeping people happy. I was linking to Jason’s letter to show why we won’t be reducing the amount of content on the site based on quotes like this:I’d like to see Hackaday grow and expand its mission beyond “one hardware hack a day.”",
"parent_id": "161071",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "161105",
"author": "Spork",
"timestamp": "2010-07-22T03:27:26",
"content": "I agree with the “should have been several times a day option” comment.I think you’ll get a lot of good info from this survey, and why are you guys having such a hard time finding your favourite three articles? Just pick three that you really like. I had about 20 come to mind and just chose three of them.Caleb, I think you’re doing a great job, keep up the good work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161108",
"author": "thlip",
"timestamp": "2010-07-22T03:31:49",
"content": "Seems to me the best way to produce more content and keep the quality and originality that Steve’s talking about is to produce more in house projects. But is that even possible with the current staff? I mean Jukus’s idea was good but is it possible to get the community to work together like that? Something like irc or a dedicated forum would be needed.BTW Steve your comment just about brought a tear to my eye.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.545864
|
||
https://hackaday.com/2010/07/20/iphone-4-steadicam/
|
IPhone 4 Steadicam
|
Jakob Griffith
|
[
"News"
] |
[
"gimbal",
"iphone",
"smooth video",
"steadicam",
"steadycam",
"weight"
] |
It’s been a while since we’ve seen a steadicam, and to quench our thirst is this
iPhone 4 steadicam
. The system does use the typical 3 axis PVC gimbal and heavy weight setup that we’ve
seen before
, but (why has it taken so long to
get this implemented
?) the addition of a hand grip means you no longer get blistered fingers. The tutorial recommends the use of an expensive cup holder mounting system, but we think making
your own epoxy one
might save another dime and allow a wider range of cameras or phones.
The whole process is also wrapped up in a quick and simple how-to video (after the jump alongside an in action video), which goes to show even though a hack may have been done several times before, presentation can make a big difference and impact.
[Thanks Max Lee]
Make your own:
[youtube
http://www.youtube.com/watch?v=MKxMuwq22sM&feature=player_embedded%5D
See it in action:
[youtube
http://www.youtube.com/watch?v=VQOL7igfbjA&feature=player_embedded%5D
| 25
| 24
|
[
{
"comment_id": "160703",
"author": "Mex",
"timestamp": "2010-07-20T21:12:24",
"content": "That’s smart, but it doesn’t handle vertical giggle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160705",
"author": "zool",
"timestamp": "2010-07-20T21:16:19",
"content": "would be good for any phone cameraproblems: still a little jitteryCAN’T SEE WHAT YOU’RE FILMING",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160707",
"author": "zool",
"timestamp": "2010-07-20T21:18:47",
"content": "… my mistake you can see, i was confused by the HAD image",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160708",
"author": "biozz",
"timestamp": "2010-07-20T21:35:19",
"content": "i made something like this for my D90 and a head for my flip … useful but when you see one you have seen them all and i have seen more than one here",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160723",
"author": "Ben Ryves",
"timestamp": "2010-07-20T23:27:36",
"content": "Steadicam? Surely that’s Apple’s latest solution to the aerial problem? :-P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160727",
"author": "walt",
"timestamp": "2010-07-20T23:38:19",
"content": "is the iphone cam really good enough for something like this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160728",
"author": "Gordon Freeman",
"timestamp": "2010-07-20T23:45:38",
"content": "But will it fix my reception problems due to crappy antenna?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160732",
"author": "Myke",
"timestamp": "2010-07-21T00:03:31",
"content": "A steadicam can’t help the fact that you are using a shitty capture device.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160734",
"author": "Timmy",
"timestamp": "2010-07-21T00:11:18",
"content": "Its a ingenious solution to a problem but the aerial is the bigger problem lol good contraption though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160737",
"author": "Erik Johnson",
"timestamp": "2010-07-21T00:29:18",
"content": "This appears to have good X and Z stabling, but zero Y stabling. Lots of vertical bounce!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160738",
"author": "Haku",
"timestamp": "2010-07-21T00:31:24",
"content": "@Myke, well put, I looked at the footage and wondered why phone manufacturers, especially Apple, make video camera technology that creates footage in the same way as the first phones with video capture, ie the each frame is ‘slowly’ scanned from the camera sensor (much like a CRT displays a picture) rather than buffered and then fetched in one complete go, like a proper video camera.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160747",
"author": "sarsface",
"timestamp": "2010-07-21T01:37:11",
"content": "Everyone that owns a camera always puts “My Name Photography”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160749",
"author": "noneed2know",
"timestamp": "2010-07-21T01:48:04",
"content": "Um, there’s an app for that!Not to mention, the video is just not good enough to require a steady cam. Sort of like taking a Ford Pinto (R) to race in the Indy 500.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160750",
"author": "tfs",
"timestamp": "2010-07-21T01:52:29",
"content": "^ True.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160764",
"author": "Leithoa",
"timestamp": "2010-07-21T03:30:32",
"content": "Well executed and it solved his problem.Regarding the concern about not being able to see what you’re filming. That’s really a non issue with a normal/wide angle lens. As long as the camera is pointed in the vicinity of the subject you’re going to get the shot. As the demo footage shows.However it’s not much of a steady mount. Sure it’s got a cheap effective gimbal, but that’s really only half of the problem. As you saw in the demo the cameraman is limited to whatever pace they can walk at that doesn’t bounce the camera all around. Any time you move at normal walk or higher you get lots of vertical jitter.For thirty bucks I can pay attention to my movements with the camera and get the same results.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1961952",
"author": "BrightBlueJim",
"timestamp": "2014-10-06T20:00:40",
"content": "Stabilizers are not just an add-on accessory that magically makes your shots stable. Steadicam® sells a training course (not just a video) with their professional rigs, because it’s just as important that the operator knows how to walk properly. The simpler rigs like this one that don’t have the camera suspended vertically are all susceptible to linear shake – all they correct is the angular motion. But even the high end ones require special training of the operator to be effective.",
"parent_id": "160764",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "160811",
"author": "Vonskippy",
"timestamp": "2010-07-21T06:39:27",
"content": "Wow, that’s like putting a spoiler on a moped.It’s a freaking phone camera – nothing is going to turn it into real video.I’m guessing Blair Witch Project 3 is in the works?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160814",
"author": "pRoFlT",
"timestamp": "2010-07-21T07:02:37",
"content": "@Vonskippy, Blair Witch Project 3, LOL.Here is footage from the iphone 4 found in black hills forest. Basicly crappy video of Coffin Rock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160815",
"author": "cyr",
"timestamp": "2010-07-21T07:07:39",
"content": "Excellent way to take away the only real advantages a phone has over a real camera (size, weight).@Haku:Sounds like your talking about the rolling shutter, which is a problem all CMOS sensors have to some degree AFAIK. Many phones are really bad, as is the D90 for instance, but even many “real” video cameras these days really suffer from it.Some things really were better in the good old (CCD) days.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160834",
"author": "strider_mt2k",
"timestamp": "2010-07-21T09:31:44",
"content": "Wow, I love how that out of focus, jittery crappy camera was able to move so smoothly!Hello?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160844",
"author": "Haku",
"timestamp": "2010-07-21T10:51:33",
"content": "@cyr: ah, thanks, that’s what the technical term is :)If I bought a ‘real’ video camera which turned out to have that I’d return it pretty quick, I really dislike rolling shutter footage, it looks dreadful and completely unnnatural.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160853",
"author": "Jim",
"timestamp": "2010-07-21T12:11:49",
"content": "Nice one! Good instruction video. How much would be the material round about?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160854",
"author": "M4CGYV3R",
"timestamp": "2010-07-21T12:26:08",
"content": "The second demo video shows just how terrible the sound on the iPhone 4 is. Quite shocking.Good music to cover it up though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160932",
"author": "therian",
"timestamp": "2010-07-21T17:09:37",
"content": "well the bad sound because it is not an appl… oh wait",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1960923",
"author": "ztrmsc",
"timestamp": "2014-10-06T15:21:40",
"content": "Shouldn’t the center of gravity be in the gimbal?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.654096
|
||
https://hackaday.com/2010/07/20/rapid-furniture-prototyping/
|
Rapid Furniture Prototyping
|
Mike Szczys
|
[
"home hacks"
] |
[
"chair",
"cnc",
"furniture",
"laser",
"mill",
"sketch",
"sketchchair"
] |
SketchChair
is a piece of software that takes the engineer out of engineering furniture. In a child’s-dream-come-true you draw the outlines you’d like to have, add some legs, and the software pops out a design ready to be laser-cut. The finishing touch of adding palm fiber and felt produces what we imagine is a moderately comfortable place to sit. Now the hard part will be convincing your spouse that you should spend the money building an industrial grade laser cutter because of all the money you’ll save on furniture.
We’re still holding out for furniture that is
3d-printed from rock
to match our Flintstone’s motif.
Oh, and as always, video after the break.
[vimeo=http://vimeo.com/9488518]
[via
Buildlog
]
| 11
| 11
|
[
{
"comment_id": "160702",
"author": "Drake",
"timestamp": "2010-07-20T21:11:54",
"content": "Yet another reason to finish my 2.5d milling machine",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160731",
"author": "Marco",
"timestamp": "2010-07-21T00:00:22",
"content": "That’s one ugly UI, but the physics simulation is a really nice feature.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160762",
"author": "addictronics",
"timestamp": "2010-07-21T03:20:55",
"content": "Omg why is lisp spelled/pronounced lisp….so cruel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160765",
"author": "Infernus",
"timestamp": "2010-07-21T03:45:10",
"content": "That will go good with my five axis milimg machine(rotating the cutting head ftw)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160776",
"author": "Reaper",
"timestamp": "2010-07-21T05:15:28",
"content": "C’mon linux x64 version, hurry up and appear. This looks like it would be so much fun to mess around with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160829",
"author": "flapjackboy",
"timestamp": "2010-07-21T08:57:23",
"content": "Wonder if the guy talking in the video has a friend in a wheelchair called Andy…I want that one! *points*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160863",
"author": "Rockrat",
"timestamp": "2010-07-21T13:41:31",
"content": "Check out Ponoko.com. You can upload your design, they can laser cut the item for you, and ship it as well as sell it to others. They were featured in Inc. Magazine and it looked pretty cool. Don’t know the cost of them though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161070",
"author": "spyder_21",
"timestamp": "2010-07-22T00:52:28",
"content": "chairs look uncomfortable. But I love the software and simulation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161225",
"author": "furniture",
"timestamp": "2010-07-22T14:55:04",
"content": "good articles…and keep posting",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163305",
"author": "Rapid Prototyping",
"timestamp": "2010-07-29T09:35:44",
"content": "And with the software it´s only possible to create chairs??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "169669",
"author": "Rosalia Hunziker",
"timestamp": "2010-08-17T18:56:37",
"content": "No matter what your father tell you, quality is something you can’t fake.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.595694
|
||
https://hackaday.com/2010/07/20/ipad-arcade-dock-has-hidden-projector/
|
IPad Arcade Dock Has Hidden Projector
|
Mike Szczys
|
[
"ipod hacks"
] |
[
"arcade",
"ipad",
"Joystick",
"pico",
"projector",
"wii"
] |
This iPad
dock is a well-executed gaming accessory
. [Linkreincarnate] used a
Hori Wii fighting stick
as the controller. In
his hardware explanation
he outlines several benefits of this choice including built-in support in most of the iPad emulators, as well as foregoing the need for a wired connection. Just above the controls there is a standard docking connector which holds the iPad in place and patches through the audio to some external speakers. But that’s not all that is included in the build, the final touch is a pico projector that can be used if you want a larger gaming experience. Video of the hardware and a gaming demonstration can be found after the break.
[youtube=http://www.youtube.com/watch?v=297GlY3aDOc]
Hardware
[youtube=http://www.youtube.com/watch?v=XIbF82U1jYY]
Gaming
| 18
| 18
|
[
{
"comment_id": "160689",
"author": "M4CGYV3R",
"timestamp": "2010-07-20T20:25:49",
"content": "I wish you wouldn’t encourage the MacTards and their silly plastic iCrap. Get a real computer you trend-latching neo hippies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160692",
"author": "Choscura",
"timestamp": "2010-07-20T20:37:55",
"content": "seconded",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160700",
"author": "zool",
"timestamp": "2010-07-20T21:02:01",
"content": "lol i don’t like mac but i think this is finethe only problem is that it’s not as cool as that ipad arcade april fools jokethe ipad needs to just slide in, 6 buttons max, 4 would be better (what’s the point of playing the more advanced games if they’re laggy anyway)needs to be more compact and doesn’t need a projector",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160710",
"author": "Errorist",
"timestamp": "2010-07-20T21:56:48",
"content": "8 buttons, really?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160714",
"author": "pff",
"timestamp": "2010-07-20T22:59:02",
"content": "> buy touchscreen device> make alternate input devicereally smart",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160718",
"author": "Gottabethatguy",
"timestamp": "2010-07-20T23:18:13",
"content": "I made a better looking mame arcade out of nothing but things I scavenged, two of them actually. Gave them away as xmas presents. The only thing I bought was the happs controls, everything else came out of the recycling centers bins at night.They were basically modeled after regular stand up jamma cabinets but scaled down to fit a 15″ monitor and I cut off the base just under the controls so it was perfect for a table top or coffee table.I see no point nor reason for this. But I guess the same could be said about some of the stuff I do as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160720",
"author": "McSquid",
"timestamp": "2010-07-20T23:19:56",
"content": "YEAAA thought you had me punk!? now you just a PAIR OF EYES!@ M4CGYV3rThirded.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160754",
"author": "therian",
"timestamp": "2010-07-21T02:26:06",
"content": "@M4CGYV3RFourthed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160777",
"author": "Eric",
"timestamp": "2010-07-21T05:23:46",
"content": "@M4CGYV3RFifthed.–Sent from my iPhone :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160807",
"author": "...",
"timestamp": "2010-07-21T06:10:49",
"content": "linuxPCmaclet the battle begin",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160816",
"author": "pRoFlT",
"timestamp": "2010-07-21T07:16:13",
"content": "lol @eric, Sent from my iPhone.@M4CGYV3R, sixthedMaybe make a mame arcade box out of the new droid and use the hdmi out to connect to HDTV? That would be cool!iphone sucks!-Sent from my iPhone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160828",
"author": "therian",
"timestamp": "2010-07-21T08:55:28",
"content": "Honestly I just cant see any logic in MacTards reasoning.Firs buying PORTABLE computer with least features to price ratio, adding to it all kinds crutches to overcome lack of standard I/O ports, and turn it into STATIONARY machine, while any desktop computer would be a better and cheaper choice. Isn’t hacking all about unleashing most power for the least possible cost?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160858",
"author": "Heatgap/Ho0d0o",
"timestamp": "2010-07-21T13:04:41",
"content": "We all know how trendy and lame Apple tends to be. Who doesn’t get sick of there crap? I feel bad for the idiots that actually spent 800.00 usd on an iPad…it’s almost bothersome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160872",
"author": "Laminar",
"timestamp": "2010-07-21T14:01:50",
"content": "@therianWhat part of “dock” is unclear to you?@pffIf you’re running games not designed for a touch screen, and alternative input device is a good idea, no?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160891",
"author": "Anon",
"timestamp": "2010-07-21T14:46:02",
"content": "@M4CGYV3RSeventhedSteve Jobs Kill Screen commin’ up if anyone’s interested…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161029",
"author": "linkreincarnate",
"timestamp": "2010-07-21T22:13:44",
"content": "To all you haters:http://www.linkreincarnate.com/2010/07/hate-that-i-love.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161205",
"author": "BobSmith",
"timestamp": "2010-07-22T13:08:57",
"content": "@linkreincarnate Yes, we’re all cash in his revenue stream if we visit his site. This is good, because he’ll need all the help he can get after buying massively overpriced toy computers from apple.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161432",
"author": "pff",
"timestamp": "2010-07-23T08:34:07",
"content": "@LaminarMaybe you shouldn’t waste all that money on a touch screen device then.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.715662
|
||
https://hackaday.com/2010/07/20/hands-free-input/
|
Hands-free Input
|
Mike Szczys
|
[
"Peripherals Hacks"
] |
[
"accelerometer",
"diabled",
"handicapped",
"hands free",
"mouse"
] |
This is a concept input device that [Tech B] built for disabled users. The device uses an accelerometer along with a piezo sensor (right click) and a push button (left click) to function as a mouse. The Arduino that resides in a breadboard on the side of the hat communicates with the computer over a serial connection,
using PySerial
to translate the microcontroller data into cursor commands with the power and ease of the Python programming language.
During development [Tech B] made a proof-of-concept video using a Basic Stamp which you can watch after the break. He found that this input device was less complicated, more accurate, and much less resource intensive than
his webcam IR tracking system
.
| 8
| 8
|
[
{
"comment_id": "160665",
"author": "netshadow",
"timestamp": "2010-07-20T18:09:59",
"content": "“During development [Tech B] made a proof-of-concept video using a Basic Stamp which you can watch after the break.”Uh — no video here…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160666",
"author": "Bob",
"timestamp": "2010-07-20T18:11:06",
"content": "(…) which you can watch after the break…Nothing after the break :-/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160669",
"author": "chrelad",
"timestamp": "2010-07-20T18:18:54",
"content": "Stylish! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160678",
"author": "Tech B",
"timestamp": "2010-07-20T18:57:18",
"content": "http://www.youtube.com/watch?v=pTrHdDTSHmA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160685",
"author": "Tech B",
"timestamp": "2010-07-20T20:01:56",
"content": "I just noticed one of the tags lol. diabled should be disabled right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160698",
"author": "David T",
"timestamp": "2010-07-20T20:58:19",
"content": "This could work really well with Dasher, which is designed to be used with head-mice:http://www.inference.phy.cam.ac.uk/dasher/It’s worth sitting through this video if you’re not familiar with Dasher:http://video.google.com/videoplay?docid=5078334075080674416#",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160830",
"author": "therian",
"timestamp": "2010-07-21T09:13:29",
"content": "Somehow this kind of projects always bring a better mood",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "283976",
"author": "Miguel Farlens",
"timestamp": "2010-12-14T12:47:41",
"content": "Hy! I’m trying to use an accel to control a mouse, but i’ve never learned to program in python, do you have the code somewhere?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.764936
|
||
https://hackaday.com/2010/07/18/my-what-a-large-capacitor-bank-you-have/
|
My What A Large Capacitor Bank You Have
|
Mike Szczys
|
[
"News"
] |
[
"capacitor",
"coil gun",
"pneumatic",
"rail gun",
"switch"
] |
[Daniel Eindhoven] put together this
11,344 Joule capacitor bank
that he says would be perfect for weapons such as
a rail gun
,
coil gun
, or electrothermal-chemical gun. He machined a couple of aluminum plates to act as a positive and negative bus. The two are separated by a denuded sheet of PCB (making us wonder how
he got the copper to peel off like that
). Once charged there’s the little problem of how to discharge the system without getting bit, which [Daniel] solved by
building a pneumatic switch
. We didn’t find the test-fire footage very interesting but we did embed the demonstration of his switch after the break.
[youtube=http://www.youtube.com/watch?v=mCX0RQm0nsk]
[Thanks Kurt via
Hacked Gadgets
]
| 43
| 43
|
[
{
"comment_id": "160142",
"author": "Wes",
"timestamp": "2010-07-18T20:22:48",
"content": "Am i doing something wrong because i can never click on any youtube videos on this site. does anybody know whats up?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160146",
"author": "Davo1111",
"timestamp": "2010-07-18T20:30:13",
"content": "@Wes, they work fine for me. Make sure your java + flash + activx is turned on in the settings + installed/updates",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160154",
"author": "EquinoXe",
"timestamp": "2010-07-18T20:57:11",
"content": "No SCR as switch?I fire my 4.0 Farad bank with a nice Hockey Puck SCR.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160156",
"author": "Patrick",
"timestamp": "2010-07-18T21:01:38",
"content": "This is precisely the kind of project I should never attempt. I almost killed myself fixing an old TV once…I should not be allowed around capacitors.Awesome power, though. I want to see it zap something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160157",
"author": "ReKlipz",
"timestamp": "2010-07-18T21:02:51",
"content": "The bounce from the pneumatic switch worries me a bit. I think a good addition would be to notch the sides of the copper block, and to have some sort of spring loaded clamp that catches the block. The arms on the clamp could be electrically conductive, or just made out of teflon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160161",
"author": "Punkguyta",
"timestamp": "2010-07-18T21:20:10",
"content": "Haha I totally tipped them off on this one! And no one has bitched yet! See I want to be an editor..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160164",
"author": "Thijs",
"timestamp": "2010-07-18T21:39:50",
"content": "The link to the site where we can buy the Rail Gun is missing..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160171",
"author": "Charper",
"timestamp": "2010-07-18T22:29:34",
"content": "@Wes: I have the same problem in the latest version of Ubuntu/Firefox… haven’t dug into it, but it works on windows and Fedora@ReKlipz: Yeah, I’d agree the bounce is a bit problematic. I don’t see why he’s using a pointed contact though… He’s got a fairly precise, well-aligned mechanism there, it we seem to me that he should use all the surface area he can.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160175",
"author": "Charper",
"timestamp": "2010-07-18T22:36:52",
"content": "Oh… if you’re reading this Daniel Eindhoven, I’d also not use aluminum as a contact. Fixing it could be as simple as adding a small piece of copper to the end where you make contact.Al Oxide (Al2O3 I think?) is a pretty good insulator. You’ll still make contact, especially with that much contact force, but your switch performance is probably going to be a lot worse than it should be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160178",
"author": "Forrest",
"timestamp": "2010-07-18T22:46:20",
"content": "@Wes I had the same issue on Ubuntu for a while … upgrading to the Maverick alpha fixed it :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160182",
"author": "Ivan Stepaniuk",
"timestamp": "2010-07-18T23:04:54",
"content": "Aluminum capacitors shouldn’t be put in short circuit as the leads (and the connection to the inside sheets of the capacitor) are not designed to manage the immense current. Some capacitors are manufactured for high current mode, like those for xenon flashes, even for those direct short circuiting should not occur.Besides that, the pneumatic switch is nicer than useful, there is no reason to minimize the contact point, on the contrary you should try to make it as big as possible, and avoid the bouncing at all, as it will generate more arcs and reduce the switch life dramatically. The contact materials are also a bad choice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160197",
"author": "wokka",
"timestamp": "2010-07-19T00:08:09",
"content": "@WesSame problem here. Chrome 5.0 on Win 7.It seems to have something to do with zoom. When I zoom out to 100%, it works fine. When I zoom in, it doesn’t.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160201",
"author": "NatureTM",
"timestamp": "2010-07-19T00:22:23",
"content": "If I owned this, I would surely die.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160202",
"author": "bbot",
"timestamp": "2010-07-19T00:28:47",
"content": "Wow, what an… interesting choice of music.He’s also got a more conventionally switched coilgun (http://www.youtube.com/watch?v=Z2biwURekQw) with utterly unimpressive performance and equally stupid music.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160212",
"author": "Digital",
"timestamp": "2010-07-19T01:27:00",
"content": "This would be perfect for the truck. No longer would I have to worry about my low end bass cutting out on those long stretches. Imaging SPL competitions!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160217",
"author": "MS3FGX",
"timestamp": "2010-07-19T02:31:32",
"content": "Yeah, first thing I thought looking at this was why he would possibly want to use a pointed contact? I can’t think of any logical reason to go through the trouble of putting a point on it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160221",
"author": "hrpuffnstuff",
"timestamp": "2010-07-19T02:48:12",
"content": "Oh goodie I finally found a use for my Krytron I had in my pile o stuff. Did I say Krytron? I meant DPDT switch in case the feds are looking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160236",
"author": "chango",
"timestamp": "2010-07-19T04:10:53",
"content": "I Am Not A Mechanical Engineer, but it seems like putting the static end of the assembly on a spring or rubber dampened mount would reduce or eliminate the bounce.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160258",
"author": "biozz",
"timestamp": "2010-07-19T05:44:08",
"content": "i would LOVE to see 11KJ go threw a coil for a coilgun XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160264",
"author": "chris",
"timestamp": "2010-07-19T06:28:59",
"content": "days old post fromhttp://hackedgadgets.com/2010/07/16/113-kilojoule-capacitor-bank/way to go with second hand news!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160267",
"author": "anon",
"timestamp": "2010-07-19T07:24:12",
"content": "Glad to see I wasn’t the only one who thought the bounce was a problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160291",
"author": "Leon",
"timestamp": "2010-07-19T09:16:57",
"content": "You can peal the copper of a PCB by heating it with a heat gun and then using pliers to peal the copper. It takes a while but works pretty good.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160320",
"author": "MatsSvensson",
"timestamp": "2010-07-19T12:20:04",
"content": "“Soon to be used with my new capacitor bank”And then there came no more videos…=0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160326",
"author": "HaDAk",
"timestamp": "2010-07-19T12:59:18",
"content": "@wesI’ve had that problem, but usually only in linux. Os X and windows appear to work fine. (relatively speaking).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160329",
"author": "M4CGYV3R",
"timestamp": "2010-07-19T13:20:36",
"content": "“Ah, I see your Lorentz is as big as mine…”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160330",
"author": "Anon",
"timestamp": "2010-07-19T13:23:40",
"content": "omfg this is the shit I don’t want to see. When HaD takes a turn, I turn to HackedGadgets. It’s like Engadget redirecting to Gizmodo…HackedGadgets is more of an original “Hack a day” than HaD is. They may only post one hack a day, but at least their shit is original. Another example of HaD starving for content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160334",
"author": "Dude",
"timestamp": "2010-07-19T13:45:50",
"content": "It’s silly projects like this that really make me wonder. What’s the point? There are so many other better ways to do this, if there is a point. There’s just no application that needs a bunch of crappy aluminum capacitors. It’s not even cost effective if you have to replace your crappy capacitors all the time for some application that doesn’t make since. Why aluminum? Terrible conductor.I’m guessing this was just for the “wow” factor, because “wow”, people don’t get it. I’d leave things that are high power, high voltage to the pros, before someone gets hurt…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160335",
"author": "Justin",
"timestamp": "2010-07-19T13:47:07",
"content": "I think another method for dampening some of the bounce would be notching the anvil in a shallow V to “catch” the strike a little better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160336",
"author": "Dude",
"timestamp": "2010-07-19T13:50:05",
"content": "Ha, I just read the specs, 185200uF. 0.2 F, are you kidding me? That giant board for 0.2F? Seriously? All that work for that? “Wow!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160340",
"author": "Ulrich",
"timestamp": "2010-07-19T14:20:15",
"content": ">Why aluminum? Terrible conductor.For solid blocks or thick plates, it doesn’t matter.And for foil capacitors: Have you ever seen devices that use anything else? (apart from antiques)> 0.2FThis is a lot, but more important is the total stored energy and how fast it can be discharged (low inductance). Paralleling small capacitors is a really good means for low inductance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160358",
"author": "laughing",
"timestamp": "2010-07-19T16:04:00",
"content": "Anon complains “omfg this is the s**t I don’t want to see. When HaD takes a turn, I turn to HackedGadgets.” and this exact same project was posted there July 16, 2010. ROFL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160371",
"author": "kabadisha",
"timestamp": "2010-07-19T16:53:29",
"content": "I was digging through my garage and found a 2500V capacitor rated at 3F. The first thing I said was ‘Sweet – I could toast some stuff with this!’ The second thing I said was ‘This could be dangerous – If I weren’t so lazy I’d think of some safety precautions’.Anyway, this pneumatic switch seems a bit overkill. I just used two broom handles with the contacts on the end of each. We let it rip across wet grass and it made the dew evaporate and the cells in the plants burst. IT WAS AWESOME!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160460",
"author": "James Becwar",
"timestamp": "2010-07-19T21:36:06",
"content": "I wonder how long until the switch welds shut…-James",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160470",
"author": "Tuttomenui",
"timestamp": "2010-07-19T22:23:50",
"content": "Bandwidth Limit ExceededThe server is temporarily unable to service your request due to the site owner reaching his/her bandwidth limit. Please try again later.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160522",
"author": "Anarc",
"timestamp": "2010-07-20T04:04:18",
"content": "Every contact, no matter how big, opening or closing, starts or ends with a pinpoint area. EVERY contact.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160523",
"author": "dude",
"timestamp": "2010-07-20T04:06:27",
"content": ">For solid blocks or thick plates, it doesn’t matter.Seriously?As far as low inductance, the real trick is low ESR, which adding giant thick plates of aluminum won’t help.>And for foil capacitors: Have you ever seen devices that use anything else?Are your talking about other applications, or only devices like this? Because there are tons of other capacitors types.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160530",
"author": "Tachikoma",
"timestamp": "2010-07-20T05:12:00",
"content": "@hrpuffnstuff: I have some spare Pu238 lying around. Wanna swap? :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160566",
"author": "Oort",
"timestamp": "2010-07-20T07:44:26",
"content": "What’s all this every contact nonsense starting and ending with a pinpoint contact? The reality of the situation is a hideously complex electrodynamic plasma physics problem. Brush discharges and corona are a good examples of arcs not being pin point needle like things. It would be accurate to say, that when sufficient volts are present, all mating connections start and end with corona.Anyhow,I’m a plasma physicist so may have a biased interest in this field.3F at 2500V..? I think not! That would weigh about 20 tonnes. We used to use something like that to energise field coils for an experimental fusion reactor (Compass in Culham science centre).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160602",
"author": "Anon",
"timestamp": "2010-07-20T13:03:22",
"content": "@laughing….That was the point….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160643",
"author": "anonymouse",
"timestamp": "2010-07-20T16:08:23",
"content": "What’s up with all the aluminum hate? Aluminum beats out copper in cost, corrosion resistance, and conductivity to weight ratio. Copper wins in conductivity/volume, and solderability, but when one is dealing with large pulsed currents a purpose built solution is practically unavoidable. Soldered connections are a bad idea in this case, and aluminum is far cheaper and easier to procure than copper. If it’s not conductive enough, just make it bigger. It’s not like a transformer, where you’ve got a limited winding window.Although I am impressed by the low inductance construction of thew capacitor buses, the switch has WAY too much bounce. A possible solution would be to quick press two pieces of roof flashing together. Plate with silver, as it corrodes slowly and the corrosion products are conductive.— = aluminum flashingI = dielectric< = external connections———————————<IIIIIIII IIIIIIII———————————<Make the dielectric thick enough to avoid breakdown, and quickly clamp the plates together with padded wood blocks to fire. You could slide a spare piece of dielectric in the gap as a safety.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160646",
"author": "anonymouse",
"timestamp": "2010-07-20T16:11:04",
"content": "Revised ascii art, as it was distorted in the previous post:– = aluminum flashingI = dielectric< = external connections* = air gap—————————-<IIIII*******************IIIII—————————-<",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161146",
"author": "Brett_cgb",
"timestamp": "2010-07-22T05:18:20",
"content": "Peel the copper of a PCB? Why?You can buy unclad FR4 sheets quite easily.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161311",
"author": "Ulrich",
"timestamp": "2010-07-22T20:25:05",
"content": "> the real trick is low ESR, which adding giant thick plates of aluminum won’t helpIt will. It’s called a ground plane in its simplest form.Also, paralleling many small capacitors is usually better than one single big capacitor, because for film/foil capacitors, ESR is dominated by the external wiring.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.899832
|
||
https://hackaday.com/2010/07/18/building-a-remote-control/
|
Building A Remote Control
|
Mike Szczys
|
[
"Wireless Hacks"
] |
[
"434 mhz",
"ATmega168",
"playstation",
"remote control"
] |
Here’s
a homebrew remote control
that [Jad Berro] is developing. He’s using a tank robot to test it out but eventually he plans to use it to control an RC plane thanks the 434 MHz wireless module inside. There’s no shortage of input, with two analog sticks from a PlayStation controller, several momentary push buttons, and some toggle switches. Although it’s not shown in the picture above there is also a 16×2 character display that serves as part of the interface. With a navigable menu the only limit to what you can do is the programming space available on the ATmega168 that inhabits the homemade Arduino board at the heart of the system. It certainly would give the
robot remote from Friday
a run for its money.
| 12
| 12
|
[
{
"comment_id": "160129",
"author": "spyder_21",
"timestamp": "2010-07-18T19:44:19",
"content": "nice clean design. Just wondering are the buttons spaced too far apart? Just seems that way. But nice none the less",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160139",
"author": "arjan",
"timestamp": "2010-07-18T20:21:12",
"content": "I fly model airplanes and the playstation controller will have 2 downsides:1. the precision of a knob that is held down with the thumbs by using pressure will not geive much precision. maybe mount a short stick to it to gain more control over the knob, just like real aircraft controls.2. The throttle force can’t be fixed, the knob will jump back to the middle.a very cool idea to control an airplane with an arduino. I like it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160151",
"author": "yosh",
"timestamp": "2010-07-18T20:49:35",
"content": "Just need a sexy enclosure and some paint",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160169",
"author": "rasz",
"timestamp": "2010-07-18T21:55:55",
"content": "just … use Xbox controller and be done with it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160193",
"author": "Leithoa",
"timestamp": "2010-07-18T23:35:58",
"content": "I realize that the Jad is from Lebanon so there are likely different regulations regarding his experiments but since many of the readers are from the US, one should be aware of the regulations that apply to radio frequencies.http://edocket.access.gpo.gov/cfr_2006/octqtr/pdf/47cfr95.207.pdfThe particular frequency he is operating on is set aside for television broadcast and walkie-talkie use. Now with the advent of Digital broadcast(and low wattage of the unit) in the US it’s not likely to interfere with television unless the transmitter is in contact with your TV antenna or cable box terminal.And you’re not likely to attract the attention of the FCC unless you start trying to boost the signal and are very reckless in its operation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160208",
"author": "...",
"timestamp": "2010-07-19T00:38:49",
"content": "434 is well within the 70cm ham band, as long as he has his tech license he is in the clear.A nice looking project! I am a big fan of using pcb’s as structural elements/faceplates, it just works amazingly well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160216",
"author": "M4CGYV3R",
"timestamp": "2010-07-19T02:28:29",
"content": "“Homemade Arduino board” is a contradiction of terms.Either it’s a homemade ATMEL board, or it’s an Arduino, which was made by someone else.This looks pretty slick. If he built it himself, good job. If not, another drop in the ‘duino bucket.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160218",
"author": "MS3FGX",
"timestamp": "2010-07-19T02:37:10",
"content": "Interesting, my father has been planning some very large RC vehicles and we had been talking about possible options for the controller. I don’t know that I would use a custom build like this for primary control for safety reasons, but could be a good option for secondary functions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160277",
"author": "vespine",
"timestamp": "2010-07-19T08:05:42",
"content": "@M4CGYV3RI think you’re arguing semantics.“Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software.”a home made board with an ATmega168 uC programmed with arduino bootloader and code is a home made arduino as far as I’m concerned.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160606",
"author": "Jan D Schuitemaker",
"timestamp": "2010-07-20T13:15:24",
"content": "Am I the only one who can’t find any details on the 434MHz module that is mentioned here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160841",
"author": "tnt23",
"timestamp": "2010-07-21T10:42:17",
"content": "Why not just use PS2 controller, they have a well documented SPI-like serial protocol (for example,http://store.curiousinventor.com/guides/PS2/).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166543",
"author": "Jad Berro",
"timestamp": "2010-08-07T16:54:56",
"content": "Yes i did all the building and PCB etching :), i can be contacted onberrojad@gmail.comfor more info.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.813487
|
||
https://hackaday.com/2010/07/18/arm-mounted-light-cannon-villains-beware/
|
Arm Mounted Light Cannon; Villains Beware
|
Mike Szczys
|
[
"Wearable Hacks"
] |
[
"arm",
"cannon",
"flash",
"hand",
"xenon"
] |
In a hack worthy of the flick Kick Ass, [Chein] built this
arm-mounted light weapon
. The lamp in the palm of your hand has a ring of LEDs for a nice glowing effect, but the real story is the xenon bulb at its center. The flash capacitor and charge circuit from a disposable camera are used to step up the battery voltage to 330V for an intense and slightly blinding discharge. The charging is started when you press a button on the back of the hand harness, with the flash coming when one of your fingers touches a conveniently positioned trigger. Check it out after the break.
This non-lethal weapon makes for a nice alternative to the dangers involve in
playing with fire
.
[youtube=http://www.youtube.com/watch?v=nO2BNljqHt0]
| 34
| 33
|
[
{
"comment_id": "160111",
"author": "amishx64",
"timestamp": "2010-07-18T18:22:47",
"content": "I like it! Next step should be to make it smaller imo.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "514451",
"author": "Lord Boofhead",
"timestamp": "2011-11-21T04:51:33",
"content": "Why? Its the size of the thing he’s mimicking.",
"parent_id": "160111",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "160114",
"author": "Jayson",
"timestamp": "2010-07-18T18:37:25",
"content": "I do like this device and it reminds me of one of Ironman’s weapons in a way, but the stuff used to make it sounds like it would burn the palm after prolong use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160123",
"author": "spyder_21",
"timestamp": "2010-07-18T19:10:06",
"content": "nice concept of the iron man weapon. Too bad you can’t make it shoot plasma bolts. Pretty cool though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160125",
"author": "jh",
"timestamp": "2010-07-18T19:18:01",
"content": "you could make it shoot plasma bolts… but the power supply needed would make it a stationary model. :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160130",
"author": "turn.self.off",
"timestamp": "2010-07-18T19:44:39",
"content": "unless one have something with the power density of a stark industries arc reactor.as for plasma bolts, the energy requirements would be secondary to figuring out how to keep the bolt stable all the way to the target.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160137",
"author": "Hackersmith",
"timestamp": "2010-07-18T20:09:34",
"content": "Look for this in Alan Wake 2.Also is the insane bright flash coming from the front light or does it seem to be coming from the back of the hand in the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160140",
"author": "clinton",
"timestamp": "2010-07-18T20:21:55",
"content": "this is sick",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160147",
"author": "Rovert Scott",
"timestamp": "2010-07-18T20:30:58",
"content": "What if you took the route the Prop-Designers did from “Logan’s Run”. The pistols they used had a canister of compressed C02 that was hit with a bright light whenever the trigger was pulled. This created a greenish burst of gas expel from the gun barrel.What if you placed a small canister of compressed air onto the rig. Then a split second before the light went off, a valve opened up releasing a stream of air into a small resivor filled with Dry Ice. From there a pipe would extend below the wrist (insulated of course) that would shoot a stream of dense gas across the area. From there the light would flash illuminating the stream in the dark.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160160",
"author": "anon",
"timestamp": "2010-07-18T21:10:14",
"content": "he should demo it outside pointing at a building at night hundreds of feet away",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160162",
"author": "junkhacker",
"timestamp": "2010-07-18T21:20:47",
"content": "next obvious step, make it a strobe instead of a single flash. much more disorienting",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160170",
"author": "Lucassiglo21",
"timestamp": "2010-07-18T22:05:17",
"content": "the next step is to make it launch plasma, maybe with a magnetron or something..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160172",
"author": "ehrichweiss",
"timestamp": "2010-07-18T22:30:05",
"content": "I was just going to say exactly what junkhacker said. I developed something akin to this a few years ago. The fun part is cascading the flashes. I found it much more effective to use several separate flash bulbs with a randomized flash delay. The disorientation of receiving not only several flashes but several, sometimes 3 or 4 at once.Drugs/alcohol can nullify stun guns and mace but anyone who sees the flashes gets affected and there aren’t many blind successful muggers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160189",
"author": "Fallen",
"timestamp": "2010-07-18T23:22:07",
"content": ":P Expose the leads to the xenon flash bulbs and you could have it double as a stun gun hahaha.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160190",
"author": "turn.self.off",
"timestamp": "2010-07-18T23:25:30",
"content": "heh, now that i think about it, maybe he could combo it with a magnetron to fire of microwaves in the same direction. “The light, it burns!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160192",
"author": "Don",
"timestamp": "2010-07-18T23:32:58",
"content": "Yes, I remember those things… A friend of mine taught me just how bright those Disposable Camera Flashes are, back in the late 90’s. He is a Photographer and worked in a Photo Lab at the time. Remember Film Cameras??? He use to save all the batteries and some of the flash mechanisms when he took them apart to get the film out to Develop it. Those little capacitors in those thing are very powerful! And when you set one off in your hand, you may just get a nice big JOLT to Boot!:O I wrapped mine with some tape since I kept shocking my self while trying to get my revenge on my Buddie for blinding me for 5 minutes every time he set that thing off in my face. One night three of us guys got into a contest to see who could blind the other with the little stealth flash devises. An then went on a drive too look at Christmas lights. Seemed logical to us at the time;) Luckily I wasn’t driving, cause I probably wold have run over something or someone with all those bright flashes going off in my face that night. One bad side effect I noticed… I became very nauseated after about 20 minutes of riding in a car and being repeatedly blinded by incessant flashing. The game was soon over form me… I still have mine, somewhere in a drawer and often thought… there must be some good use I could put this thing to. Hmmm, maybe a Security Flash Light… Good Work Chein!:) But, I’m not much into wearing allot of gear on my arm when I’m running around;)Don",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160198",
"author": "Chris Sutcliff",
"timestamp": "2010-07-19T00:08:44",
"content": "All this talk about disorienting muggers, didn’t anyone think what might happen if the mugger had this (or something similar), disorient and confuse the victim with less chance of them being able to ID you.(note: I am not nor have ever been a thief.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160226",
"author": "adam felson",
"timestamp": "2010-07-19T03:07:50",
"content": "lame. a buzz lightyear toy laser",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160237",
"author": "Brian",
"timestamp": "2010-07-19T04:16:16",
"content": "Very interesting. I had at one time thought of something similiar, except I was thinking of using 5W white LEDs (or perhaps 3 3W LEDs in the colors red, green & blue). This seems like a better idea though.@adam felsonNot really. I used to walk around alone late at night, and something like this (mounted on your jacket, and with 360 degree coverage) would allow you to walk around safely without carrying something your local law enforcement official probably woundn’t get to worked up about.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160238",
"author": "kristian",
"timestamp": "2010-07-19T04:22:26",
"content": "@Brian haha idk… anything involving wires on/in a jacket probly would look like some kind of bomb to your average paranoid cop… if they’re not paranoid then good on them :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160251",
"author": "Aero",
"timestamp": "2010-07-19T04:40:28",
"content": "But where did the lighter fluid come from? /GOB",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160263",
"author": "lollol",
"timestamp": "2010-07-19T06:17:37",
"content": "oh what a lol.all of u ‘geeks’ here…pitfull lameass fuckers…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160278",
"author": "Fili",
"timestamp": "2010-07-19T08:06:33",
"content": "So that’s an arm-mounted camera blitz… Why should I be impressed by that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160288",
"author": "kaser",
"timestamp": "2010-07-19T08:56:04",
"content": "That’s Great !!is it possible to reduce the diametre’s light ?:D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160319",
"author": "fartface",
"timestamp": "2010-07-19T12:14:30",
"content": "that small of a Xenon strobe is too dim. he needs to get a larger coil type that a studio strobe uses. you can literally feel the pulse of light and hear a very loud pop. Probably would only get 2 firings out of those AA batteries though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160454",
"author": "jeditalian",
"timestamp": "2010-07-19T21:13:45",
"content": "i remember the noise a camera makes when it’s charging the cap for flash.. and the noise iron man makes when he’s charging up his weapons..let’s make this bigger, powered by a backpack full of lithium ion cells, and with a bigger, badder charging circuit. cap bank instead of single cap.. big enough to hear it powering up. then u can build a plasma rifle to go with it.say you wanted to make a lightning gun, ground the target so the lightning hits them. you could follow the example of the taser, launching barbed cables into the target, then ZAP em. but the cables would have to be well insulated or it would ground out before reaching the target. or you could just go coilgun.but i want a plasma crossbow shotgun, AKA the plasma cutter in dead space. it’s pretty awesome, although i would settle for a moonraker. of course if we did hack together something dangerous like that it wouldnt make it’s way to hackaday because hackaday doesn’t usually involve anything too life threatening.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160456",
"author": "jeditalian",
"timestamp": "2010-07-19T21:22:12",
"content": "if i were in the situation don’s friend was in, we would be seeing something awesome here. a very large array of camera flashbulbs. smaller arrays mounted to vehicles. somebody tailing you, especially at night? Blind em. back of your car packed tight with flash bulbs, DC in for all the charging circuits wired to same regulated power source. triggered in unision, or in groups incase you miss because they were blinking, you could fire half, or a quarter at a time. just wire all the triggers in bundles, to momentary switches on your dash. if you were in a car chase, disorient them, they can’t see anything but phantom stains of green/purple/blue whatever. then they either pull over or hit something. either way they’re off your tail. also great for stunning deer so you can sneak up and knife them. conserves ammo:D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160492",
"author": "Anon",
"timestamp": "2010-07-20T00:51:49",
"content": "This is so gay. I’d understand if this was a 10 year old building it but unfortunately the sap looks fully grown.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160623",
"author": "J. Swift",
"timestamp": "2010-07-20T14:38:45",
"content": "It’s nicely built but, as other commenters have pointed out, it’s only a step up from banging a disposable camera on your palm to trigger the flash.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160697",
"author": "moogie",
"timestamp": "2010-07-20T20:57:13",
"content": "remember to close your eyes before the flash, else you’ll be temporarily blinded, too.for directionality, why not some of the LEDs that they use in CREE-type flashlights (which come with a warning to not look into the beam)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160856",
"author": "jamal",
"timestamp": "2010-07-21T12:33:15",
"content": "Hi how do we get to the content of these nice projects plse is by contacting the publesher or how I mean in details thank you very much",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161651",
"author": "Sinnic",
"timestamp": "2010-07-24T03:15:34",
"content": "Not that I want to criticise or mock your work.BUT my camera does that it can even do a strobe light thing which really blinds you. Plus you get a nice photo for evidence to show the police.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162381",
"author": "Me",
"timestamp": "2010-07-26T23:26:35",
"content": "The only way this would work Is1. Make The flash duration longer.2. Make them shock resistant. I.E, Knockin foo’s out wit em. resistant.Be nice in rough neighborhoods.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163344",
"author": "Petestrash",
"timestamp": "2010-07-29T12:21:54",
"content": "Saw this on a TV show a year ago (http://www.bbc.co.uk/pressoffice/proginfo/tv/2009/wk37/design_for_life_feature.shtml). One of the designer came up with this concept.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,404.968733
|
||
https://hackaday.com/2010/07/18/making-glow-sticks-at-home/
|
Making Glow Sticks At Home
|
Caleb Kraft
|
[
"chemistry hacks"
] |
[] |
[youtube=http://www.youtube.com/watch?v=tItOOpyJP5k]
Even if you have no interest in making these yourself, you might enjoy this educational
instructable about making your own glow sticks
. Comprised of a very short list of chemicals,
all available online
, the process is fairly simple. If you’re feeling like you want to take on a little more complicated chemistry project, you can also
make the TCPO component your self
, possibly saving some money as the individual components are cheaper than the final product. As they note, it is just cheaper and easier to buy a glow stick, unless you are making
mass quantities
.
| 27
| 27
|
[
{
"comment_id": "160065",
"author": "Alexander Rossie",
"timestamp": "2010-07-18T15:34:24",
"content": "I wish he’d elaborate on generates “energy”. Does he mean light outside of the visible spectrum? H+ , e-?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160066",
"author": "biozz",
"timestamp": "2010-07-18T15:35:34",
"content": "give your self TCPO poisoning in 3 easy steps! :Dbut seriously TCPO, diethyl phthalate and Rhodamine B must be handled with care",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160067",
"author": "biozz",
"timestamp": "2010-07-18T15:36:23",
"content": "@Alexander Rossielight is energy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160070",
"author": "SpeedBall",
"timestamp": "2010-07-18T15:47:12",
"content": "Superb explanation! Very lucid (lucient?), hardly an “uhhmm”! Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160080",
"author": "rain",
"timestamp": "2010-07-18T16:20:52",
"content": "why hide your real geek voice!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160081",
"author": "Word",
"timestamp": "2010-07-18T16:20:57",
"content": "that voice.. is disturbing as hell, can’t imagine what the guy looks like.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160088",
"author": "biozz",
"timestamp": "2010-07-18T16:41:42",
"content": "@Wordhe sounds like brian posehn XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160090",
"author": "Scott",
"timestamp": "2010-07-18T16:53:05",
"content": "I agree – it sounds like he has absolutely no idea what he is talking about. “Expert scientific opinion” my rear end! Alexander Rossie is right on in complaining that he skips over the definition of “chemical energy”.I’m just pulling this one out of my rear, but I assume he’s talking about a chemical reaction releasing high-energy (UV) photons which collide with and knock-off lower-energy, inner-shell electrons of the various fluorescent dies added. When higher-energy electrons from outer shells drop inward to fill the low-energy vacancy, the difference in energy is released in the form of photons, whose wavelength is proportional to the difference in energy levels.On second thought, I should probably readhttp://en.wikipedia.org/wiki/Glow_stick",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160096",
"author": "rain",
"timestamp": "2010-07-18T17:32:17",
"content": "no he sound like thishttp://www.youtube.com/watch?v=o2zy_nE0rQoso make it more man like… he morph his sound…lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160097",
"author": "rain",
"timestamp": "2010-07-18T17:34:05",
"content": "he is a smart guy keep them coming…thank your for posting…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160100",
"author": "Farbon",
"timestamp": "2010-07-18T17:52:03",
"content": "Oh come on scott. You expect him to cram a university level explanation into a video that he clearly meant for a more general audience? That’s like demanding kindergartens teach calculus instead of just teaching 1+1=2.People like you should get that stick outta your rear. If you’re so pissed off message the dude and maybe he’ll help you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160117",
"author": "zing",
"timestamp": "2010-07-18T18:48:08",
"content": "@scottThe purpose of all the chemicals is to generate c2o4, not UV.c2o4 gives energy to the dye through electron transfer when it breaks down to carbon dioxide. The electron then kicks off a photon.It is sort of like photosynthesis, in reverse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160121",
"author": "walt",
"timestamp": "2010-07-18T19:01:36",
"content": "why did he pitch shift his voice like that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160126",
"author": "gyro_john",
"timestamp": "2010-07-18T19:40:07",
"content": "@walt,Prolly has professional associates who would recognize his voice and take exception to his activities.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160133",
"author": "greycode",
"timestamp": "2010-07-18T19:51:03",
"content": "He showed you what you needed, why you needed them, how to mix them, and he used safety equipment. He even gave you the basic science about what he was doing. Pretty much exactly how he would have presented this to a basic audience. Would a super geek be happy? No, but then the super geek would want to do it their selves.If you want a bone to chew on, he should have said something more on how to safely handle the chemicals in question, but if you have the willingness to do this, you would probably read handling directions on the packages. So I don’t see even that being that big a deal. A Mr. Science type video.What bugs me is the voice dub. Unless this guy is Jason Bourne I don’t see why the need to change the voice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160134",
"author": "greycode",
"timestamp": "2010-07-18T19:54:53",
"content": "@wait You caught me in between posts, but who is going to nut up over that video? I don’t see this killing the glow stick market. Even tells us at the start that it is more expensive to do this unless you do it in bulk. The guys doing this in bulk are not going to be afraid of this video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160138",
"author": "DJ",
"timestamp": "2010-07-18T20:12:37",
"content": "very environmentally responsible…………I hope all the kiddies try this one. cause we know that everyone disposes of toxic waste properly……….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160150",
"author": "The Moogle",
"timestamp": "2010-07-18T20:43:10",
"content": "the pitch shifted voice really really annoys the hell out of me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160177",
"author": "John",
"timestamp": "2010-07-18T22:44:46",
"content": "Very nice. Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160246",
"author": "Lank",
"timestamp": "2010-07-19T04:31:58",
"content": "This kills me. While it’s not a big deal (as he shakes it and the chemicals aren’t violently reactive), he SHOULD Have added the liquid to the powders…not the other way around.But alas, even PH.Ds make dumb mistakes in technique too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160324",
"author": "Farbon",
"timestamp": "2010-07-19T12:53:24",
"content": "That’s the stupidest thing i’ve heard Lank. It’s clear you’re not Ph.D. i’ve added water to pail of sodium hydroxide once, it damn near killed me when it blew up in my face. You’re supposed to add things to the liquids in small amounts and if it heats up to much you stop and let the liquid cool down. If you add liquids to solids then the solid keeps dissolving as the liquid heats up, eventually the liquid heats up so much it boils… sometimes violently.You’re the dumbass buddy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160364",
"author": "Xeracy",
"timestamp": "2010-07-19T16:15:16",
"content": "anyone know what would happen if these different colors were mixed? would it work like additive color mixing like light (primary colors mixed to make white) or would they mix like pigment (primary colors mixed to make brown/black)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160369",
"author": "Alexander Rossie",
"timestamp": "2010-07-19T16:42:50",
"content": "@biozz, which is why I asked for elaboration on the reaction doesn’t produce light it produces energy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160385",
"author": "medix",
"timestamp": "2010-07-19T17:33:02",
"content": "@Alexander Rossie: They’re the same thing:E=hv (Planck’s constant * frequency)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161162",
"author": "Mad Scientist",
"timestamp": "2010-07-22T06:40:45",
"content": "This does not have to be run i DiethylPhtalate, normal acetone (propanone) is just as good, and even cheaper.Plus you wont get funny children from acetone, you will only burn you balls ;)(DiethylPhtalate is a hormone mimicing chemical)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161840",
"author": "error404",
"timestamp": "2010-07-24T22:14:17",
"content": "Thanks for the instructables warning in the body text. It is appreciated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "171926",
"author": "Void",
"timestamp": "2010-08-21T10:44:10",
"content": "This was a fun video :D",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.061905
|
||
https://hackaday.com/2010/07/18/servo-controller-board/
|
Servo Controller Board
|
Mike Szczys
|
[
"classic hacks"
] |
[
"atmega328",
"AVR",
"controller",
"pic",
"servo"
] |
This board is [Eric Seifert’s] venture into working with AVR microcontrollers. He has worked with PIC microcontrollers in the past and used the goal of
developing a servo controller board
as his motivation to try the grass on the other side of the fence. He found he likes the AVR line for its ease of development under Linux, a feature we also appreciate. What he ended up with is a tiny board that controls up to eight servo motors. If you’ve got
a project that is spilling over with servo-controlled limbs
, maybe this will save you some development time.
| 17
| 17
|
[
{
"comment_id": "160077",
"author": "Jake",
"timestamp": "2010-07-18T16:04:16",
"content": "Nice work, Eric!!! This is what I like to see.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160079",
"author": "strider_mt2k",
"timestamp": "2010-07-18T16:15:48",
"content": "I really need to learn surface mount. :(Old through-hole guy here.I’m told I won’t want to go back once I get into it.I just need to bite the bullet and get a kit or something.Really nice work. That looks like a wonderful piece to do some robotics with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160087",
"author": "Brennan",
"timestamp": "2010-07-18T16:35:57",
"content": "Soldering surface mount parts is actually very easy, it just seems intimidating until you try it. You do want to have a decent iron for it though. Check out the sparkfun tutorials or watch youtube videos on how to do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160092",
"author": "eric",
"timestamp": "2010-07-18T17:01:25",
"content": "Mike,control should be plural.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160093",
"author": "eric",
"timestamp": "2010-07-18T17:02:31",
"content": "…and there should be no “is” in the last sentence.How did you get this job?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160113",
"author": "Jake",
"timestamp": "2010-07-18T18:33:24",
"content": "@strider_mt2kYou really only need a solder station with decent tips, some tweezers, flux, solder, and a magnifier if your eyes are bad. It may look intimidating, but I can populate a surface mount board with X number of components at least twice as fast as I can populate a through-hole board with the same number of components.@ericI work with a group of software, hardware, and mechanical engineers. I don’t think a single one of them is a pro at the English language, and their handwriting is even worse. I think you may want to start hanging out in a literature forum or something xD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160118",
"author": "andar_b",
"timestamp": "2010-07-18T18:50:38",
"content": "@JakeThis *is* a hacking blog, but since it is a writer’s job to, you know, write…we tend to expect that they do it correctly.I’m expected to do my job correctly, aren’t you? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160122",
"author": "Zeke Shadfurman",
"timestamp": "2010-07-18T19:05:28",
"content": "@andar_bDo you really expect hackaday to shell out for a perfectionist writer, or do you want to see as many awesome hacks a day as you can? I know what I want and if grunting could get the message across it would be good enough for me. We all know what it says, no need to be a grammar troll… why would anyone really even care. Another point, its kinda befitting, this isn’t finished-product-a-day, the writing should match, it’s part of the style, actually, that was probably part of his job description, make your writing look as hacked as possible, go count the errors in the NY Times, they’re supposed to be able to write, they even have an editors, but they still end up with errors on every printing, its all relative, this last sentence is just to make those grammar OCD feel uncomfortable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160135",
"author": "Kevin Harrington",
"timestamp": "2010-07-18T20:00:20",
"content": "Nice work! I know first hand the difficulties associated with writing a servo controller, and would like to offer some help. I have spent 2 years developing/testing/ and implementing a communications protocol for small electronics devices. The Bowler Communications System (BCS) is a lightweight packetization system for forming asymmetric star topology communications systems. I am working in developing a company around our hardware that implements the system, but the more people we can get using the BCS, the better it will be for everyone. We have a full implementation in Java and all the protocol descriptions and packet descriptors for C/C++ (we haven’t released the C sources…yet). If you are interested in details, contact me at:kharrington@neuronrobotics.comOf you can take a look at the protocol and the implementations on our Wiki:http://neuronrobotics.com/wiki/Main_Page",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160152",
"author": "Rachel",
"timestamp": "2010-07-18T20:54:28",
"content": "“I have noticed an issue that if the servos move to fast, it seems to be resetting the FT232RL”Sounds like you need a bigger decoupling capacitor. The capacitor for the motors is rather far away on the circuit board, too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160155",
"author": "Eric Seifert",
"timestamp": "2010-07-18T21:01:21",
"content": "@Rachel yes that is the issue, but not sure that I really need to fix it since this only happens when the electronics are being powered by the DC instead of the USB so this chip is not in use :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160297",
"author": "MoJo",
"timestamp": "2010-07-19T09:54:19",
"content": "The AVR tools available are a lot, lot better than the PIC ones. On Windows AVR Studio beats MPLab easily. Sure, it may seem to have a few fewer features but AVR Studio’s genius is that it doesn’t get in your way. It all just works and is easy to customise.MPLab doesn’t even have an easy way to organise the workspace windows due to it’s annoying interface.Also the GCC AVR target code is quite mature and well documented.The AVR line is also very consistent for the most part. Not only is porting easier but all the knowledge you gain working on one part is generally applicable to most of the others.Now, if only they would do DIP versions of the USB AVRs…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160317",
"author": "Mike Rankin",
"timestamp": "2010-07-19T11:51:58",
"content": "Back in the day I used to etch my own pcbs to make projects like this. Now my full time job is routing them using Altium and having them manufactured elsewhere. If you have a project in mind that uses difficult parts like BGAs or MLF that is not possible to etch then give me a shout and I can help you out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160331",
"author": "tim",
"timestamp": "2010-07-19T13:32:21",
"content": "Using a software way to generate the pulse does not give a good resolution for the pulse width. This resolution should be better than 2us, and servicing the interrupt is quite long because it save and restore the 32 registers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160393",
"author": "Alfred",
"timestamp": "2010-07-19T18:02:12",
"content": "Eric,Tough love time here. I suggest you learn to stop using magic numbers and start adding some useful comments to your code.For example, In your “init_all” function, you init Timer 1 using a bunch of constants that mean… what? Wat is the significance of OR’ing TIMSK1 with the value 0x02? If you had either defined a value (such as TIMER_PRESCALE_64, or whatever the magic number 0x02 represents) or even put in a comment, the code would be readable. Right now, it’s something that requires reading a datasheet to even understand the concept.State machines are a good idea, but you don’t want to implement them by simply incrementing a state value. You want to have constants defined and set each state with a constant. Tell me which line below lets the reader understand what the code is doing better:command_state++;orcommand_state = CMD_STATE_SET_SERVO_HIGH_BYTEHowever, your use of a state machine is suspect here anyway. Why is this not simply inline code? Why loop around and have a state machine if all you are doing is performing some simple, linear sequence of operations. It appears your function could be re-written like this:void command_set_servo(){uchar servo_number = 0;uchar uc_val[2];//Server number (1-8)if((UCSR0A & (1< 8 || servo_number < 1)return;//Servo value high byteif((UCSR0A & (1<<RXC0))) {uc_val[1] = UDR0;}//Servo value low byteif((UCSR0A & (1< pwm_set.pwm_max || ui_val < pwm_set.pwm_min)return;}//Execute byteif((UCSR0A & (1<<RXC0))) {if(UDR0 == 0xA5) {servos[servo_number-1].duty = ui_val;}}}It's shorter. It's faster because you're not de-referencing variables in your union and looping. It's much easier to understand as it simply does the work sequentially. Finally, it does the exact same thing your original function does without getting bogged down in a state machine that adds nothing to functionality, but does increase complexity.Also, variable names like \"x\" and \"ui_val\" (for \"unsigned int value\") are weak. If the name of your variable is just the variable type expressed slightly differently, then you need to understand what variable names are for. They are there to provide shorthand information about what the variable is used for, not what type it is. Also, naming a menu string \"men\"? What are you possibly gaining by dropping a single letter other than decreasing readability and comprehension?You're looking to get hired with your brand new degree, right? I recommend learning professional habits for code writing. Always write your code as if you're going to get hit by a truck tomorrow and someone else will have to pick it up and work with it.Yeah, I know, it's just a quick project. It's a test. It's not finished. I know. These are all excuses. If you don't develop good coding habits from the start, you never develop them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160395",
"author": "Alfred",
"timestamp": "2010-07-19T18:03:09",
"content": "Before anyone complains, the site removed my indentation on the code example. It was properly indented when I hit the “Submit Comment” button.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161353",
"author": "Jake",
"timestamp": "2010-07-22T23:23:21",
"content": "@AlfredWhere did he imply that he was a software engineer? I have stated in the past that most of the software engineers I’ve worked with were oblivious dicks who had all sorts of opinions on their software, but ultimately refused to properly understand the hardware they were writing code for. I suspect that you are one of those dicks!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.116956
|
||
https://hackaday.com/2010/07/17/lolos-perfect-moment-alarm-clock/
|
Lolo’s (perfect Moment) Alarm Clock
|
Jakob Griffith
|
[
"Arduino Hacks",
"clock hacks"
] |
[
"air quality",
"alarm clock",
"arduino",
"circuit diagram",
"dew point",
"humidity",
"perfect moment",
"sleep patter",
"source",
"temperature"
] |
[youtube
http://www.youtube.com/watch?v=CphsgESZGcE&feature=player_embedded%5D
It seems everybody has a different interpretation of the
perfect alarm clock
. [Loic Royer’s] alarm clock is not
the loudest
, or
the smartest
, but does have some interesting features. By monitoring several environmental factors like temperature, air quality, humidity, dew point, and your own sleep patterns, this alarm clock can determine the best moment in the morning to wake you up.
The main sensor is a wireless accelerometer with the theory being: the more you move in your sleep, the closer you are to a conscious state. The other sensors assist in picking the perfect moment, and awaken you with the sound of birds chirping.
For now all we have is the source code and the list of hardware, but for anyone wanting to try, a circuit diagram wouldn’t be too hard to figure out on your own. Check after the rift for some more videos.
Setting the clock:
[youtube
http://www.youtube.com/watch?v=H51m5tOAKqQ&feature=player_embedded%5D
Different sensors:
[youtube
http://www.youtube.com/watch?v=9OHXxB8jQfU&feature=player_embedded%5D
Wireless accelerometer:
[youtube
http://www.youtube.com/watch?v=pKqmedNijh8&feature=player_embedded%5D
| 20
| 20
|
[
{
"comment_id": "159918",
"author": "biozz",
"timestamp": "2010-07-18T00:36:27",
"content": "very interesting project but for all that i think a bigger screen would be in order … maybe PSP screen sized and in color and very vibrant but this is a nice start",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159933",
"author": "Jim Foster",
"timestamp": "2010-07-18T02:48:27",
"content": "Ideally no alarm clock would be best…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159951",
"author": "Roboguy",
"timestamp": "2010-07-18T04:11:21",
"content": "@biozzWhy such a big screen? It’s an alarm clock. The screen isn’t a feature to be used except during programming & time reading.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159956",
"author": "biozz",
"timestamp": "2010-07-18T04:47:56",
"content": "@Roboguyfor one its an alarm clock that is supposed to give humidity and whatever other information and when your just waking up the last thing you want to do is focus to read an alarm clocksecondly an alarm clock is used mostly as a regular clock and reading a small poorly lit poorly contrasted screen is more effort and more strain than should be on such an advanced clock",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159979",
"author": "bdirgo",
"timestamp": "2010-07-18T07:44:39",
"content": "@LoicRoyerThis sounds like a job for JeeNode!Cheaper than using an arduino/Xbee combo, and completely compatible with arduinos.http://cafe.jeelabs.net/lab/jn4/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160005",
"author": "Sebi",
"timestamp": "2010-07-18T10:33:16",
"content": "This could also avoid a morning wood :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160010",
"author": "Funky Gibbon",
"timestamp": "2010-07-18T11:13:09",
"content": "Is that a cobalt motor box?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160024",
"author": "Bogdan",
"timestamp": "2010-07-18T12:15:09",
"content": "Very nice idea. (I actually remember seeing it some time ago).There’s something that I am missing, where exactly is the acceleration sensor mounted?How often does it find that right moment for waking you up, before the maximum allowed hour? I am asking this because I’ve recorded myself sleeping a few times and i found out that some nights i don’t move at all during sleep, I wake up in the same position that i fell asleep.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160032",
"author": "M4CGYV3R",
"timestamp": "2010-07-18T13:19:18",
"content": "I need to find somewhere to get a bunch of cigar boxes for project enclosures. This one looks pretty solid, whatever the box was from.What factor does Air Quality possibly play in waking you up, or is that just an info display?I guess if you or anyone sleeping with you is gassy it’s best not to wake up when the air quality is ‘poor’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160035",
"author": "Roboguy",
"timestamp": "2010-07-18T13:26:24",
"content": "@biozzWell, it doesn’t have to supply that information. From my reading of the HaD post, I gather that it uses that info itself, and that the user doesn’t need to know about it.It could be that they don’t use their alarm clock as a normal clock – they might rarely use their watch or a projection clock for telling time. I use my cell phone as an alarm clock, and I read the time on my watch when I wake up.Even if they do read the time off their clock (in which case I agree that a larger screen is needed), I’m not sure they would use a “[PSP-sized color screen]” on such a project when a cheaper, lower resolution B&W screen would be better suited for time display.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160039",
"author": "Mike",
"timestamp": "2010-07-18T13:31:47",
"content": "This is pretty cool, but I would replace the bird sensor with a REM sensor. If you wake during REM, you always feel refreshed. Plus, birds start chirping at 4 AM in the summer here… don’t want to wake up then.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160048",
"author": "steeve",
"timestamp": "2010-07-18T14:07:34",
"content": "a big random number generator would do the same as all the fancy sensors in combination",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160063",
"author": "biozz",
"timestamp": "2010-07-18T15:30:25",
"content": "@Roboguyit gives “temperature, air quality, humidity, dew point, and your own sleep patterns” so i believe one would also use it as timeplus i dont know many people who buy an alarm clock and a clock so its as simple as putting 2 and 2 togetherprobably used it because its cheap and easy to interface not to mention a psp screen (sparkfun #LCD-08335) is $60thats why i said its a nice start",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160194",
"author": "Loic Royer",
"timestamp": "2010-07-18T23:36:03",
"content": "@biozz: I can see the number perfectly well, even at a distance, but some people complained that the screen is a bit small (girlfriend). I guess I am lucky with my eyes (until now ;-))@Bogdan: The accelerometer is attached below the matress in a way that it registers as much movement as possible. A cable goes to the alarm clock.@M4CGYV3R: The air quality has nothing to do with waking up. I just like to monitor air quality, reminds me to open the windows…The idea came because sometimes I would wake up with a headacke if I had not open the windows. I just need a lot of oxygen during my sleep. I am really experimenting right now to figure out how I can best use all this data I collect to optimize my sleep…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160195",
"author": "jones",
"timestamp": "2010-07-18T23:38:52",
"content": "couldn’t you replace the accelerometer with an infrared motion detector?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160333",
"author": "aeiah",
"timestamp": "2010-07-19T13:42:39",
"content": "Am i to assume it only starts monitoring within a certain timeframe (say, one hour before latest wake-up time)? if it monitored my movement all through the night and used that to signify waking me up, it’d go off every hour all night long.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160346",
"author": "Loic Royer",
"timestamp": "2010-07-19T14:58:58",
"content": "@bdirgo: interesting board…@jones: Maybe, it all depends how sensitive it is… Testing would be needed…@aeiah: Exactly, I set a ‘waking up deadline’ and it monitors sleep for a periode before, I choose 1 hour.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "162657",
"author": "dd",
"timestamp": "2010-07-27T19:00:26",
"content": "I don’t see the point of waking you when you are almost awake in the first place but maybe I’m missing something? Isn’t an alarm clock’s business to wake you when you are asleep so you don’t come late for work and such?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "168515",
"author": "Kris Lee",
"timestamp": "2010-08-14T10:05:19",
"content": "@Loic RoyerYou do have plenty of oxygen in the room. What I think you are actually experiencing is CO2 poisoning.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "474485",
"author": "jaicky t",
"timestamp": "2011-10-07T12:43:51",
"content": "can any one help with the schemetic?i want to do this project plz",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.379798
|
||
https://hackaday.com/2010/07/17/openwrt-on-a-seagate-freeagent-dockstar/
|
OpenWRT On A Seagate FreeAgent Dockstar
|
Mike Szczys
|
[
"Peripherals Hacks"
] |
[
"dockstar",
"freeagent",
"linux",
"openwrt",
"seagate",
"serial",
"ssh"
] |
The Seagate FreeAgent Dockstar aims to make all of your stuff available online. It serves that purpose but sometimes you just want more options for controlling your hardware and running some scripts. [Eric Cooper] put together
a guide for installing OpenWRT on the Dockstar
by building your own kernel and loading it onto the internal storage. Once you have a kernel that will play nicely with the hardware, you can install it by tunneling in through SSH; the same method you would use if you wanted to
run Linux on this hardware
. If you have problems along the way, [Eric’s] also included a guide for cracking the Dockstar open and connecting a serial cable.
| 50
| 50
|
[
{
"comment_id": "159910",
"author": "Spork",
"timestamp": "2010-07-17T23:00:01",
"content": "That’s awesome, basically a cheap ($30 on amazon) file server/NAS box? Useful and cheap, just the way hackers like it!Bet you could just use a buspirate instead of a serial cable, too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159912",
"author": "walt",
"timestamp": "2010-07-17T23:18:45",
"content": "yeah. pretty cool hack! …no.. wait. it’s just a pretty cool ad.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159914",
"author": "girrrrrrr2",
"timestamp": "2010-07-17T23:35:13",
"content": "Someone get this running along with a Hak5’s pineapple!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159916",
"author": "marco",
"timestamp": "2010-07-18T00:11:46",
"content": "got a few of these on woot.com a few weeks back for $25 or so knowing that someone had to have figured them out. just unpacked one for the first time last night as a matter of fact",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159922",
"author": "sM10sM20",
"timestamp": "2010-07-18T01:07:19",
"content": "@walt,This is a quality project and a great writeup. Now we all know its fun to criticize… but honestly stop being such a whinny b**ch.-sM10sM20",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159950",
"author": "nave.notnilc",
"timestamp": "2010-07-18T04:03:38",
"content": "isn’t openwrt more for routers? install debian instead, way more useful for general server-y stuff",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159955",
"author": "Mike",
"timestamp": "2010-07-18T04:40:44",
"content": "…just conned my wife into letting me buy one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159960",
"author": "T313C0mun1s7",
"timestamp": "2010-07-18T04:57:22",
"content": "@Mike I hope she reads this – LOL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159965",
"author": "Nicolas",
"timestamp": "2010-07-18T05:57:28",
"content": "I just ordered 3 pcs from Rueducommerce website in France.They have a special discount for it, 15.90 Euros.This is probably the deal of the year ; -)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159973",
"author": "Drone",
"timestamp": "2010-07-18T07:16:56",
"content": "Nice Work ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159982",
"author": "Just me",
"timestamp": "2010-07-18T08:31:32",
"content": "So, is there enough power to run* iptables* 3G USB network Ethernet router* NFS* apache or something?If so, I’ll buy one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159983",
"author": "Erwin",
"timestamp": "2010-07-18T08:36:23",
"content": "So buy some, load 1TB porn on it and make public ftp server on it, index it into proisk and now its useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159987",
"author": "Just me",
"timestamp": "2010-07-18T08:54:10",
"content": "I’ll answer to myself: It has enough power, so I’ll buy one :) Happy hacking to me :) Thanks for the ad, HaD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159990",
"author": "Kyle Anderson",
"timestamp": "2010-07-18T09:29:35",
"content": "I’ve got a couple of these and I highly recommend them.Not to steal his thunder, but I’ve got my instructions which are way easier, and don’t include patching or compiling:http://wiki.xkyle.com/Install_Openwrt_on_a_Seagate_DockstarYou can easily find them for under $10 on ebay, a super deal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159997",
"author": "Just me",
"timestamp": "2010-07-18T10:04:46",
"content": "American hackers, please buy some Dockstars and sell them on eBay with some realistic shipping & handling. Those Dockstars are far too expensive here in Europe compared to USD 25 prices out there. Thanks :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160033",
"author": "M4CGYV3R",
"timestamp": "2010-07-18T13:20:55",
"content": "Are there any good resources on how to build scripts for Open-WRT?I can program a full 3D graphical program but I can’t for the life of me figure out shell scripting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160047",
"author": "cpmike",
"timestamp": "2010-07-18T13:54:08",
"content": "I got one of these on woot a while back, as soon as it showed up I cracked it open, mounted an internal memory stick into it, and installled Plugbox Linux on it. Its cool, a little 1.2mhz cpu, boots from flash… worth the investment if you are looking for a cheap, sufficiently powerful cpu unit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160069",
"author": "Dmnhunter",
"timestamp": "2010-07-18T15:45:11",
"content": "I was one of the pioneers in installing openwrt and then ddwrt on the fon router. I am working on instruction set now for dd-wrt on the dockstar.That will give you command line newbies some help.Yes this is primary a distro for routing but you install pkgs for anything like a webserver,phone system,kismet drone or more depending on your hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160072",
"author": "Cynyr",
"timestamp": "2010-07-18T15:49:47",
"content": "@M4CGYV3Rhttp://tldp.org/LDP/abs/html/“””This tutorial assumes no previous knowledge of scripting or programming, but progresses rapidly toward an intermediate/advanced level of instruction . . . all the while sneaking in little nuggets of UNIX® wisdom and lore. It serves as a textbook, a manual for self-study, and a reference and source of knowledge on shell scripting techniques. The exercises and heavily-commented examples invite active reader participation, under the premise that the only way to really learn scripting is to write scripts. “””",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160073",
"author": "foo",
"timestamp": "2010-07-18T15:50:36",
"content": "any one knows a solution for getting composite out on this thing? it would be a perfect snes or arcade system :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160074",
"author": "Hitek146",
"timestamp": "2010-07-18T15:51:49",
"content": "@M4CGYV3R:You script in OpenWRT just like you do in any other Bash environment. MAN pages are your friend… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160075",
"author": "Cynyr",
"timestamp": "2010-07-18T15:54:53",
"content": "@cpmikeI’d be a lot more interested in it if it had dual gigabit networking ports, or even dual 100Mbit ones. Looks like it would make a sweet little router. I could then make my linksys WRT54G V8 into nothing more than a AP. As for using it as a NAS, seems like it would be hard to back up, be slow transfer wise, and provide no redundancy. Granted if this could handle mediatomb and a 2TB drive I could see me buying one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160076",
"author": "jonored",
"timestamp": "2010-07-18T16:00:16",
"content": "OpenWRT is, at this point, much more of a generic embedded linux distribution than just a router OS – although it still does the router work extremely well (if you know what you are doing). If your development process builds an image and then uploads it to the device, it’s worth a look. Using their build system, buildroot-ng, it’s a bit less work than setting up a gentoo system without changing defaults, and you can control what goes into the image quite tightly. There is provision for building stuff as packages, as well, which can be insalled after the fact.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160109",
"author": "Miles",
"timestamp": "2010-07-18T18:21:08",
"content": "This is still insanely expensive in the UK!The O2 Joggler (1.3 Atom, 512Meg Ram, 1gig MMC, Gbit) was £50 ($80 inc tax) yet these are between £40-80Dam shame, I’ve got a hankering for a gadget :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160115",
"author": "Davo1111",
"timestamp": "2010-07-18T18:38:52",
"content": "Someone needs to set up a US store that undercuts all the other stores.Things like La Fonera, Dockstar etc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160116",
"author": "Davo1111",
"timestamp": "2010-07-18T18:39:17",
"content": "(oh and ships internationally, obviously)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160158",
"author": "Patrick",
"timestamp": "2010-07-18T21:07:01",
"content": "International HaD visitors: Is there really that much demand for these outside the US? I’d be happy to buy a couple for cheap here and send them along, but I don’t have any idea what the shipping would be, or if it would be worth your money.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160159",
"author": "Miles",
"timestamp": "2010-07-18T21:09:29",
"content": "Yeah I’d totally like to grab one. As you said, no idea how much shipping would be though?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160187",
"author": "bang",
"timestamp": "2010-07-18T23:08:43",
"content": "Check your local office depot stores. they have these on clearance (probably very hard to find, as its hit sites like slickdeals months ago) for $1. This is probably why you see these going so cheap on ebay. dont bother asking the employees if you cant find it on the shelves, find a kiosk and query sku 434466. HTH",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160248",
"author": "n17ikh",
"timestamp": "2010-07-19T04:34:04",
"content": "I’m running Gentoo on my Dockstar, got it for $20 at Woot. I couldn’t get the Sheevaplug Debian squeeze installer or lenny rootfs image to work but if someone tried harder they could surely do it; I didn’t care enough as I already had the working Gentoo system. I used the kernel patches from the second link in the post, and the precompiled u-boot and blparam from the Plugbox Linux guys. It’s got a 1.2Ghz Marvell Kirkwood ARM processor, 128 megs of RAM, and gigabit ethernet. It’s a pretty nice machine, a lot better than my old NSLU2 – and it has the bonus of being powered on whenever it’s connected to AC power instead of having a power button, so it’s self-restoring after power outages without hardware modification. Also, the onboard serial console has a header already attached, no soldering necessary. I got it for $20 from Woot the other day, and it can be found for similarly low prices on buy.com and ebay. The only real downside is the lack of RTC – requires modification of boot scripts to set the time early on in the boot process.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160257",
"author": "aeiah",
"timestamp": "2010-07-19T05:38:42",
"content": "from UK to NY shipping cost me under £10 for 0.5kg, just for a ballpark figure. maybe ebay can give you a better idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160273",
"author": "fsphil",
"timestamp": "2010-07-19T07:45:42",
"content": "“you can install it by tunneling in through SSH; the same method you would use if you wanted to run Linux on this hardware”And there was me thinking OpenWRT used Linux ;-)UKian here, would love to get one of these too!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160375",
"author": "Jac Goudsmit",
"timestamp": "2010-07-19T17:01:57",
"content": "The instructions are based on the Sheevaplug target of OpenWRT, modded into running on the Dockstar. Hopefully he’s working on an OpenWRT patch to create a proper Dockstar target; that would make it a lot easier for people to build it.Doesn’t take anything away from the coolness, though!===Jac",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160607",
"author": "Just me",
"timestamp": "2010-07-20T13:17:03",
"content": "I’d still like to buy one. Ebay sellers have postages starting from $10, some of them ask for $30… Please, this is a chance to earn some $ :)—I’d try to install Gentoo on it, maybe get proper RTC on it and think if i could use the S/PDIF connection in the main CPU for some music. Think about 20-dollar NAS playing music and other stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161067",
"author": "Terry",
"timestamp": "2010-07-22T00:32:33",
"content": "Where is the cheapest place to buy one of these? I’m trying to get one in a couple days time without going through ebay. I haven’t been able to find these things for $20 but I have found them for $40 shipped.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161283",
"author": "Richard Milward",
"timestamp": "2010-07-22T19:04:49",
"content": "Try your local Craigslist — I just got an unopened one for $30…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161423",
"author": "Kmac",
"timestamp": "2010-07-23T06:56:11",
"content": "Walmart has them for around $14 and you can order online with shipping at less than a dollar.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161424",
"author": "Kmac",
"timestamp": "2010-07-23T07:00:15",
"content": "When searching on Walmart, search for Seagate and scroll down for the $13.84 dockstar – the $79 version is no longer available :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161471",
"author": "Miles",
"timestamp": "2010-07-23T13:31:48",
"content": "That’s awesome, do any of you US hackers fancy firing one over to the UK?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161508",
"author": "Richard Milward",
"timestamp": "2010-07-23T16:24:03",
"content": "Kmac, the Desktop Dock at Walmart for $13.84 is a USB-only dock, it is not the DockStar and it has no Ethernet connection.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161568",
"author": "Vivek Thomas",
"timestamp": "2010-07-23T21:05:45",
"content": "Any idea from where to get it the cheapest? The lowest I found is on eBay for $43.88.http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290452177200Please post here if you find anywhere cheaper.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "163047",
"author": "GS",
"timestamp": "2010-07-28T16:14:49",
"content": "If I flash custom firmware on this box, will PogoPlug web interface still work on a box or not? I’m interested in having access to files, streaming etc with no need for port forwarding etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166017",
"author": "Harrry",
"timestamp": "2010-08-06T01:56:04",
"content": "Ok these are back in stock @seagate.com for($40).tigerdirect($35) or Amazon.com …Hurry",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "166154",
"author": "Vivek Thomas",
"timestamp": "2010-08-06T13:14:38",
"content": "^ Its seem to be already out of stock in TD.Btw you can use the coupon “seagatestorage” to get an additional 10% off when ordering from Seagate Store.http://www.seagate.com/www/en-us/products/network_storage/freeagent_dockstar/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "167237",
"author": "Just me",
"timestamp": "2010-08-10T05:50:57",
"content": "What are the specs ofhttp://www.seagate.com/www/en-us/products/home_entertainment/freeagent_theater_plus/? Is it possible to install Linux on those? They are ~50 Eur/USD in some places.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "172354",
"author": "Just me",
"timestamp": "2010-08-23T05:22:25",
"content": "http://www4.hardwareversand.de/articledetail.jsp?aid=29042&agid=146020,59 eur. Great price :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "172994",
"author": "gorgone",
"timestamp": "2010-08-24T22:32:10",
"content": "now dockstar full debian supportself compiled kernel 2.6.35.3 with full led/mdt supportthis device rocks …. lower than 20€i use it as oscam serverits also possible to flash debian on the internal mdt without a stik ….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "203687",
"author": "Albert",
"timestamp": "2010-10-27T15:15:32",
"content": "Does anyone have the pre-built images stored some where? The links in the post do not work.http://www.cs.cmu.edu/~ecc/download/dockstar-uImagehttp://www.cs.cmu.edu/~ecc/download/dockstar-rootfsThanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "242280",
"author": "Ryan",
"timestamp": "2010-12-04T03:04:06",
"content": "Hi have a rosewill docking station witha wed 10ears 1.tb hardrive in it. It won’t sleep while plugged inot the dockstar. Is it possible to get this drive to stop spinning?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417536",
"author": "Mark J Crane",
"timestamp": "2011-07-14T16:14:33",
"content": "Dockstar instructions to setup a complete phone system called fusionpbx.http://tech.psgv.ca/2011/06/installing-fusionpbx-on-openwrt-wip/",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.245515
|
||
https://hackaday.com/2010/07/17/rfid-cat-feeder-helps-with-the-diet/
|
RFID Cat Feeder Helps With The Diet
|
Caleb Kraft
|
[
"home hacks",
"Robots Hacks"
] |
[
"cat",
"feeder",
"food",
"rfid"
] |
[vimeo=http://vimeo.com/10896151]
When faced with having 2 cats with different dietary needs, [Landmanr] had to decide between manually stopping the cat on a diet from eating normal food, or
building a dietary robot overlord
. [Landmanr] chose the robot route. Using an old cd rom for the opening/closing mechanism, and RFID to distinguish between felines, [Landmanr] no longer has to stand guard while each cat eats. We particularly like the design of the antenna, so that the cat has to stick its head through it to activate the food opening. You don’t see that version in the video, but it is in the instructable.
| 29
| 29
|
[
{
"comment_id": "159802",
"author": "Animal RN",
"timestamp": "2010-07-17T15:46:45",
"content": "very cool. you know the rest of us have to go out and buy products like that. Love it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159815",
"author": "spyder_21",
"timestamp": "2010-07-17T16:11:28",
"content": "very nice feature, little slow at closing the door, but great way of separating the food between cats.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159836",
"author": "Keith Handy",
"timestamp": "2010-07-17T17:45:27",
"content": "What if one cat is so smart that he learns to get the other cat to open the door for him?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159838",
"author": "hmburgers",
"timestamp": "2010-07-17T17:58:49",
"content": "My two cats are both right there with each other eating–the one who is heavy is like a bulldog when it comes to food, so I can envision the little cat opening the door and then bulldog showing up and letting the CD drive just wack against it’s head while it keeps eating :-PBut a cool hack/idea none the less :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159840",
"author": "biozz",
"timestamp": "2010-07-17T18:04:13",
"content": "neat!id love to do this to my dog but IDK if they make a material strong enough to keep him away from his food XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159842",
"author": "mjrippe",
"timestamp": "2010-07-17T18:17:53",
"content": "@hmburgersThanks for the laugh – I can totally envision that! You do bring up a good point though, won’t most CD drives just close again if they hit an obstacle? Maybe that sensor is removed – I didn’t read the entire instructable. Either way it is a great idea and with a sturdier enclosure it could be marketable!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159846",
"author": "Justin",
"timestamp": "2010-07-17T18:23:27",
"content": "I could really use this to make sure only the cat eats his food, and not the dogs as well.Cool looking cat in the vid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159848",
"author": "fabio",
"timestamp": "2010-07-17T18:49:34",
"content": "my wife thinks this could be modified to become some kind of a chastity device…sounds a bit bulky, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159850",
"author": "Gosh",
"timestamp": "2010-07-17T19:01:19",
"content": "Really nice! I’d need a sturdier build for my cat tho =/ She’d eat that thing on the way to her food.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159864",
"author": "Potato",
"timestamp": "2010-07-17T20:13:35",
"content": "@Animal RNwhen you say “the rest of us” you are not talking about the hacker community, are you?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159870",
"author": "Mel",
"timestamp": "2010-07-17T20:39:37",
"content": "where can you get a rfid detector and reader. I need one bad (lost my passport under a pile of documents and boxes I suppose) I want to make sure it is there before digging into the mountain of stuff and thought an rfid detector might help identify the existence of the rfid chip embedded in the passport.Where can I get one and how much does this thing cost ? Commercial stuff starts from several hundred dollars which I am not willing to part with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159871",
"author": "Steve",
"timestamp": "2010-07-17T20:47:22",
"content": "@MelI got mine from seeedstudio (they are the ones selling the bus pirate) for like $15",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159887",
"author": "Face",
"timestamp": "2010-07-17T21:35:48",
"content": "A friend of mine did something similar where he used a pair of PC fans to blow in the face of the wrong cat. Works great. Same principle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159888",
"author": "brian4120",
"timestamp": "2010-07-17T21:37:17",
"content": "@MelI’m not sure what frequency a passport’s RFID tag operates at.The ID-20 module I use operates at 125kHz and supports EM4001 tags. I’m thinking they may be using a different frequency. If I had a passport I would try verifying this for you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159890",
"author": "Jake",
"timestamp": "2010-07-17T21:40:32",
"content": "This is pretty cool. My girlfriend has 3 cats, and I am trying to convince her to chip them so that we can put an RFID reader on the cat door and keep them from going back outside at night. Right now, we have to round them up and latch the door shut every night, it would be cool to just deny them access to the outside after a certain time of day!I guess we could just put tags on their collars, but 2 of the cats have problems with getting their collars caught on things, and the collars come of (the safety kind that won’t strangle them!) One of the cats has been through 3 collars in the last 9 months >:-|",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159899",
"author": "Rachel",
"timestamp": "2010-07-17T22:06:21",
"content": "@JakeNo need for RFID in this case. Simply use a one way latch with a timer. The cats will be locked in, but anyone caught outside can still enter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159923",
"author": "Hirudinea",
"timestamp": "2010-07-18T01:45:54",
"content": "Some cats are put off by mechanical noises and moving things, so they might not eat from this thing, but besides that a great idea! (Does Weight Watchers know about this?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159929",
"author": "Jake",
"timestamp": "2010-07-18T02:05:50",
"content": "@RachelDarn it, that’s too simple!I just figured if I were going to go to the trouble of mechanizing it all, I’d use something sexy like RFID, lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159944",
"author": "hammy",
"timestamp": "2010-07-18T03:37:15",
"content": "I’ve been trying to do something similar here:- Pets where I live all have to be microchipped, so I have been trying to make an RFID door reader that can read the implanted microchip on my cat. I modified an arduino-controlled commercial RFID module from 150kHz down to 135.4kHz to read the signal but I’m yet to figure out a way to read her chip without having the coil on top of her! Eventually it will basically be used to control a cat-door, with a set “lock-in” time so she cant go back outside after dark.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159945",
"author": "hammy",
"timestamp": "2010-07-18T03:38:42",
"content": "Or rather just a simple light detector that locks the door when ambient light drops below a certain level to indicate night-time/dusk",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159964",
"author": "Kep",
"timestamp": "2010-07-18T05:37:01",
"content": "Nice invention. Unfortunately, RFID chipping has been shown in studies to cause tumors in a significant percentage of chipped animals. :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160037",
"author": "M4CGYV3R",
"timestamp": "2010-07-18T13:28:24",
"content": "@KepWhere’s your information from? Generally RFID tags have nowhere near enough power to cause cellular mutation/tumors.Also, I would assume this guy has the RFID on the cat’s collar or something, and not embedded in its head.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160045",
"author": "Algai 'D' Aman",
"timestamp": "2010-07-18T13:53:15",
"content": "Nice post. Devices for easy pet care are always useful.@Hirudinea – I bet if the cat got hungry enough, it would eventually find the noise bearable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160071",
"author": "wernicke",
"timestamp": "2010-07-18T15:49:46",
"content": "@KepI’m with M4CGYV3R on this one. In fact, most RFID tags are passive and radiate NO power until excited by a nearby reader/antenna at the right frequency).Active tags might be another story (although I haven’t heard of any studies verifying tumors), but I’ve never had to change my dog’s batteries, so I’m pretty sure it’s passive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160234",
"author": "Rachel",
"timestamp": "2010-07-19T03:42:41",
"content": "@M4CGYV3RThe health issue of RFID tags has nothing to do with electromagnetic radiation, but rather the implant itself. It sounds like the tissue is reacting to the foreign body, causing scar tissue, rejection, or even tumours. I suspect this is highly dependant on the coating of the capsule, and the injection placement/technique.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160351",
"author": "Jake",
"timestamp": "2010-07-19T15:35:36",
"content": "@KepThere is a big difference between a foreign body reaction and a tumor. Cite some scientific data or admit to being a PETA wacko.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "187248",
"author": "Robyn",
"timestamp": "2010-09-28T13:55:33",
"content": "@ PotatoAs an RVT I have a ton of cat parents with the same concern. If they could have this awesome device- it would silence all their objects to changing diets for the cats for their health!Love answers to problems- where can I sign up?: )rest of us means those of us that have to buy it- ’cause we wouldn’t know how to begin to make it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "571990",
"author": "Susan",
"timestamp": "2012-01-31T23:25:11",
"content": "You can also use aMeowSpace, which solves the same problem, but doesn’t leave the door open, and also prevents the feeding cat from being bullied away from the food. Check it out. It’s pretty cool. A friend of mine got one. It works really well, looks nice, and she says the company is excellent with support. Also, there is an unconditional 60 day full return/refund policy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1133997",
"author": "Rubberduck",
"timestamp": "2013-12-14T20:42:33",
"content": "There is a really nice commercial RFID feeder by Wireless Whiskers. I will handle up to 8 pets and can individually control diet and access for each pet. It is pretty cool.http://www.wirelesswhiskers.com",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.574453
|
||
https://hackaday.com/2010/07/16/sega-genesis-cloned-with-an-fpga/
|
SEGA Genesis Cloned With An FPGA
|
Mike Szczys
|
[
"classic hacks"
] |
[
"Altera",
"de1",
"fpga",
"sega"
] |
[Greg] managed to
clone a SEGA Genesis using a field programmable gate array
. He used a Terasic/Altera DE1 board, which will set you back about $160, during development. The onboard push buttons are currently used as the controller with VGA for the display. Who knows, maybe there’s enough programming space left to
drive a PSP screen
and turn this into a handheld?
You can see some gameplay footage after the break. If SEGA was never your thing don’t forget that there is an
NES FPGA hack
out there too.
[youtube=http://www.youtube.com/watch?v=ilzKiW21T9Y]
[Genesis
photo credit
]
[DE1
photo credit
]
| 36
| 35
|
[
{
"comment_id": "159551",
"author": "Jake",
"timestamp": "2010-07-16T20:09:56",
"content": "COOL!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159561",
"author": "osgeld",
"timestamp": "2010-07-16T20:28:29",
"content": "Yea that’s pretty cool software on a dev board, wish my arduino had that kind of power loloh well maybe one day I will test the fpga waters, but for my old sega fix Ill just have to stick to emulatorsBTW: it would be nothing to break it out to use standard sega controllers, what would be cool though is a cartridge slot, just in case",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159569",
"author": "Hitsman",
"timestamp": "2010-07-16T20:49:50",
"content": "They had a handheld Genesis, it was called the Sega Nomad.Worked pretty well too, but bulky. It had outputs to go to a full sized TV and had a standard controller port for the second player.One problem was when you stacked Sonic 3 on top of Sonic and Knuckles on top of a Game Genie, it got pretty ridiculous and any slight motion would reset you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159570",
"author": "NatureTM",
"timestamp": "2010-07-16T20:57:00",
"content": "Wow, nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159575",
"author": "Jake",
"timestamp": "2010-07-16T21:14:15",
"content": "@OsgeldCheck Digilent (digilentinc.com) for some nice entry level (and affordable) FPGA boards. They will give you their academic discount if you are in any engineering program at a university, and if you’re in high school I think that you may also be able to get the discount if you are involved in any sort of electronics curriculum there. I believe that they also have instruction books that you get get to go along with some of their boards, to help you learn to use them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159585",
"author": "svofski",
"timestamp": "2010-07-16T22:03:53",
"content": "Yes yes yes! Another great DE1 project! Kudos to Greg!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159588",
"author": "Mikey",
"timestamp": "2010-07-16T22:12:32",
"content": "No sound?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159601",
"author": "tyco",
"timestamp": "2010-07-16T23:36:32",
"content": "Apparently no sound yet. I’ve also noticed this build seems to be quite a bit overclocked from the original genesis. Thunder Force IV is known for having rampant slowdown, even when there are relatively few objects on screen. There should have been some during the gameplay in the video. The most telling item, though, is Hard Drivin’. That game should run at somewhere between 3-5fps (I kid you not, this game is utter trash). In the demo video, it looked almost smooth, which is by no means what it plays like on a real Genesis.The stock 68000 CPU on the genesis should be running at 7.65MHz. I have a system at home with 9 selectable clock speeds from 5.1MHz to 20.4MHz. This system appears to be running smoother than the 12.75MHz I can get my system to stably run, so I’m gussing it’s clocked at somewhere around 14-16MHz.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159610",
"author": "Reaper",
"timestamp": "2010-07-16T23:56:27",
"content": "I’m in a FPGA and Verilog class. Neat :0. Maybe someone can take all the fpga hardware emulators and put them on one chip and make a universal hardware game player?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159620",
"author": "axodus",
"timestamp": "2010-07-17T01:05:36",
"content": "how do you learen the original game console internal work for emulating it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159634",
"author": "philpem",
"timestamp": "2010-07-17T02:07:43",
"content": "@tyco — he’s using the DE1’s 27MHz master clock oscillator (it actually has three, plus an external input, but I can’t remember all the frequencies off hand) to run everything. That 27MHz clock is doubled with a PLL to get 54MHz. The 54MHz is fed through a divide-by-6 counter, so the CPU clock is 54/6 = 9MHz.The SDRAM controller gets the full PLL clock: all 54MHz of it. I hope he’s added a -2ns phase shift on the SDRAM clock pin (not the SDRAM controller, the actual clock out to the SDRAM chip). It makes the DE1 SDRAM loads more stable, and ISTR Altera/Terasic actually recommend it in one of the tutorials.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159641",
"author": "natrix",
"timestamp": "2010-07-17T02:45:27",
"content": "The code for the project is in VHDL, not Verilog. Converting between the two is not difficult.I took a tech elective course on VHDL where we emulated a CISC microcontroller on a Spartan 3.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159643",
"author": "socompsp",
"timestamp": "2010-07-17T02:51:13",
"content": "this is cool, but a bit pricey for a sega. and you can already play about any reto system up to the n64 on the psp via emulation, and all run smooth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159662",
"author": "Ramon",
"timestamp": "2010-07-17T05:03:35",
"content": "t’s interesting, i have an amp board of a SEGA, i don’t know what SEGA device had this audio circuit, but it’s weird because it is technically HUGE.Components: STK4392 and a lot of passive components.PD: sorry for my terrible bad english.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1462608",
"author": "Fender Edwards",
"timestamp": "2014-05-16T03:51:55",
"content": "sounds like it came out of a “Super Hang On” or similar arcade machine",
"parent_id": "159662",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "159663",
"author": "Torlus",
"timestamp": "2010-07-17T05:14:27",
"content": "Hi, OP there.@tyco @philpem Actually it’s a divide-by-7 counter, as in the original Genesis. I didn’t add the -2ns phase shift to the SDRAM clock, I wasn’t aware of that. Thanks for the tip, I’ll give it a try asap.For the speedup, in my guess it’s mostly because the DMA transfer operations are faster than what the original VDP provides.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159693",
"author": "tee are",
"timestamp": "2010-07-17T08:27:47",
"content": "it’s been a long long time since the last time i play sega genesis",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159711",
"author": "cantdio",
"timestamp": "2010-07-17T10:29:11",
"content": "/me can’t believe his eyes..someone actually released the source to a “FPGA” console clone??! Lots of people do console clones and never release the source or bitstreams, i.e. there are loads of NES clones but no source, so theres no way of porting it to different dev boards.I’ll get this running on my Xilinx board when I get home :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159716",
"author": "Ryan",
"timestamp": "2010-07-17T11:00:34",
"content": "As mentioned Digilent boards are fantastic entry level FPGA development suite for engineering students.The Nexys2 board is great, the only limitation is the lack of connectivity range, but with their add-on boards they overcome this limitation.Digilent also provide tutorials in VHDL and Verilog to help kick-start your projects.Using the Nexys2 and Xilinx ISE is the cheapest option and a very effective way of getting started with FPGA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159732",
"author": "Selfsilent",
"timestamp": "2010-07-17T11:25:58",
"content": "Or just buy a real genesis for a tenth of the price, none of the messing about and all of the functionality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159735",
"author": "Sergiusz",
"timestamp": "2010-07-17T11:28:00",
"content": "I’ve got 250$ and I would like to buy FPGA board.I’ve got some experience with Xilinx devices but Altera is also cool.Which of the available development boards has the best FPGA resources to price and on-board peripherals to price ratio?I was thinking about Spartan-3A Starter Kit (XC3S700A) and Spartan 3E-1600 Development Board (XC3S1600E).I’m no longer a student, so I cannot use this academic program benefits. My board with Altera FLEX 10K is not enough so I’ve got to buy something.Which of development kits is most recommendable?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159782",
"author": "Marshall",
"timestamp": "2010-07-17T14:03:54",
"content": "or you can buy the Altera DE0/DE1 from Terasic, they’re cheap, do a lot, and best of all you aren’t forced to use Xilinx’s god-awful software. Not saying quartus is great, but it’s a LOT better",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159783",
"author": "amishx64",
"timestamp": "2010-07-17T14:06:22",
"content": "@SelfsilentObviously anyone could do that. That’s why this is a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159797",
"author": "Drone",
"timestamp": "2010-07-17T15:34:16",
"content": "Nice hack, It may scale as the HaD editor stated with an LCD to be portable.I think the TG68 68000 and T80 Z80 cores are via:http://www.opencores.netThe readme on the Google Code page does not say much about this. Nice to see an Altera-based design. I second the Digilent boards, good value and good support. But I wish they would keep the software downloads up to date and compatible with the Xilinx IDE for the likes of the venerable X-board, of which I’m sure there are many still in-use.Had, please keep your snorkel up and find these kinds of things to post. I’ll tolerate a bunch of iPhone/Android nonsense as long as you don’t dumb-down across the board (that may be difficult though).Regards, Drone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159876",
"author": "Osgeld",
"timestamp": "2010-07-17T21:27:25",
"content": "“Or just buy a real genesis for a tenth of the price, none of the messing about and all of the functionality.”you can buy an xbox1 for about the same price and have many more systemsbut that is not really the point now is it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159891",
"author": "Jake",
"timestamp": "2010-07-17T21:41:35",
"content": "Osgeld, you have been pretty hostile lately!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159925",
"author": "Osgeld",
"timestamp": "2010-07-18T01:54:20",
"content": "please forgive me, how is that hostile in any shape or form?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159928",
"author": "Osgeld",
"timestamp": "2010-07-18T01:59:30",
"content": "especially coming from the guy ~2 days ago stated“I think that I have a little resentment against projects that are really just software experiments. Most of the software guys I have worked with did not really understand the hardware that they were coding for, and they were stuck-up dicks about it too.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159930",
"author": "Jake",
"timestamp": "2010-07-18T02:07:37",
"content": "@OsgeldLol, let’s not go there again. Let’s talk about how Unicorns are real!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160300",
"author": "svofski",
"timestamp": "2010-07-19T10:29:35",
"content": "DE1 has 4-bit/channel video output (that’s 4096 colours, just to avoid confusion), a stereo codec, 512K of 10ns SRAM in addition to 8MB DRAM, 4MB of Flash and, PS/2 and serial connectors and, best of all, expansion connectors compatible with IDE cables that are abundant in every hackers’ drawer. On top of that, there are lots of hobby projects for DE1 that one can take, study, hack, or just download and install.I haven’t seen a lot of Spartan 3E projects that could interest me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160432",
"author": "Sergiusz",
"timestamp": "2010-07-19T19:43:59",
"content": "@svofskiI saw some projects that used the Spartan-3A/3E board. I think that there is even something on fpgaarcade (http://www.fpgaarcade.com/pacman/pacman_rel004_sp3e.zip).Probably there is even an instruction how to add more colors to VGA output.I will do some quick boards comparison.First of all why I’m not convinced fully to DE1:-Lack of Ethernet port,-Not so much of available on-board RAM,-Lack of on-board ADC/DAC,-Small amount of integrated BlockRAM,Why I like DE1:-Altera Cyclone II 2C20 has More logic elements than Spartan-3A (although configuration is completely different)-SD card socket,-24-bit audio codec,-Available SRAM on-board,-More multipliers,-3 external clocks available (in a result less PLLs can be used),Why I dislike Spartan-3A board:-Smaller amount of logic cells (different configuration, 2 LUTs per SLICE)-DDR2 memory controller requires lots of resources (MIG),-Lack of on-board SRAM memory,-Lack of audio codec (there is a mini-jack for PWM audio though),-Less multipliers,-Only 1 external clock source,Why I like Spartan-3A board:-Available Ethernet port,-DDR2 memory (good for application where burst mode is needed),-On-board ADC and DAC,-More available memory in BRAMs than in competition,The board with Spartan-3E is also neat but I heard that it’s somehow worse than 3A device (something with multipliers, not so performance oriented). When it comes to resources, board with Spartan-3E offers quite a lot.I used Quartus II and Xilinx ISE 10.1 for some time. I liked a lot *.ucf files in ISE. Quartus is also powerful but somehow more…spartan :) and ISE is more user friendly. Both SDKs work under Linux, although it took me a while to run ISE under Ubuntu and properly configure JTAG programmer. In a result I only used ISE to edit files and synthesized project with scripts (platform independent). I stopped using Quartus without considering usage of synthesis scripts.I think the best solution would be Altera DE2 board (pretty sweet), although I’m no longer a student, so I cannot afford it.OK, waiting for last voice that will fully convince me to DE1. Maybe someone used both Spartan 3/A/E and Cyclone II devices on the daily basis and can compare them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160438",
"author": "svofski",
"timestamp": "2010-07-19T20:04:28",
"content": "(Not really trying to convince in anything, but if there’s some piece of hardware that I’m a fan of, it’s the DE1 board ;) )DE1 projects that I remember straight away:One-Chip MSX (MSX-2)FPGApple (Apple II)Minimig (Amiga ECS)Project Zet (a full PC clone!)Sega Genesis now :DAnd by yours truly:vector-06cc (Vector-06C)bk0010-fpga (Electronika BK) — both are old Russian home computers, probably of limited interest to the rest of the world, but people seem to find pieces of those projects useful for other purposesFor me, VGA output alone was enough to decide in favour of DE1. 4 bits per channel are enough to imitate Amiga ECS and I even managed to make a colour PAL encoder with that output. 1-bit per channel on the Digilent board is only good for very basic stuff.People have different priorities though, not everyone needs great VGA output and to some onboard Ethernet PHY may outweigh lack of sound codec.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160445",
"author": "Sergiusz",
"timestamp": "2010-07-19T20:32:58",
"content": "Take a look here:http://www.xilinx.com/support/documentation/boards_and_kits/ug334.pdfBoard also supports 4096 colors.Oh crap, Zet works on DE1 (very happy).Thanks for help :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160447",
"author": "svofski",
"timestamp": "2010-07-19T20:46:45",
"content": "Hmm I was looking at a different board then:3E kit, and you point at the 3A-kit. I stand corrected.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160515",
"author": "Steve B",
"timestamp": "2010-07-20T03:15:42",
"content": "In response to the blurb here:“Who knows, maybe there’s enough programming space left to drive a PSP screen and turn this into a handheld?”If there is space to drive a VGA signal, then there is space to drive a PSP screen; they’re nearly the same thing except that the timing specs are different and the PSP screen takes parallel digital data rather than analog for each color.It can be done with a few counters and comparators, shouldn’t take more than a couple percent of the logic in the FPGA, if even that much :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "199120",
"author": "ASIC",
"timestamp": "2010-10-19T08:49:54",
"content": "i found a SEGA game runs on tPAD FPGA board.http://www.youtube.com/results?search_query=Sega+Game+on+tPad+&aq=f",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.515709
|
||
https://hackaday.com/2010/07/16/neon-binary-clock/
|
Neon Binary Clock
|
Mike Szczys
|
[
"clock hacks"
] |
[
"ac",
"atmega328",
"high voltage",
"lamp",
"neon"
] |
[Josiah] said ‘no’ to LEDs and instead used blue-phosphor
neon lamps to build this binary clock
. The ATmega328 inside uses three 8-bit shift registers to control the display. Each lamp needs a high-voltage NPN transistor in order to switch on the 150V necessary for proper illumination. A simple circuit was used to pull a 60 Hz clock signal out of the incoming 16VAC power. Unfortunately it was a bit too simple and didn’t provide a clean signal. [Josiah’s] workaround is something of a debounce subroutine in the firmware to prevent multiple interrupts on the falling edge.
The last project we saw from [Josiah] was the
Coachella Lamp
. That was a show piece of antiquated technology and this is another show piece with a minimalistic style. We also liked seeing the protoboard work on the inside. That’s a pretty jam-packed circuit board and keeping everything in the right place while you build up each trace with blobs of solder is no small feat.
| 21
| 20
|
[
{
"comment_id": "159534",
"author": "biozz",
"timestamp": "2010-07-16T19:14:04",
"content": "im surprised it took this longvery nice",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159535",
"author": "Jake",
"timestamp": "2010-07-16T19:16:07",
"content": "There’s something sexy about those lamps.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159537",
"author": "Brennan",
"timestamp": "2010-07-16T19:26:56",
"content": "Am I the only one who thought of miniature light-up condoms?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159541",
"author": "andrew",
"timestamp": "2010-07-16T19:37:32",
"content": "Wow, very impressive project, so cleanly done, especially with the PCB",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159545",
"author": "biozz",
"timestamp": "2010-07-16T19:54:37",
"content": "@Brennani thought of Christmas lights … i would have gone with the more classic rounded neon lamps",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159582",
"author": "Hitek146",
"timestamp": "2010-07-16T21:53:47",
"content": "Like! I’ve never seen blue neon lamps before, I wonder where he sourced those…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159587",
"author": "Joscience",
"timestamp": "2010-07-16T22:11:17",
"content": "The neon-bulbs are actually what inspired the project! I came across them at a pretty neat electronics boutique called All Spectrum Electronics, where I was purchasing some NeonNixie HV PS kits. They still have more of the blue-lamps if you are interested in using some for your own project (more of the HV supplies too!). Tiny glass condoms… seems a strange thought to me.I’m glad that most people think the build quality is decent. :-) My construction skills are far better than my EE skills, which in turn are far better than my programming skills.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "968867",
"author": "Bart de Boisblanc",
"timestamp": "2013-03-02T17:46:55",
"content": "Nice project and thanks for the information on where to get the neon bulbs.",
"parent_id": "159587",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "159591",
"author": "macegr",
"timestamp": "2010-07-16T22:32:18",
"content": "Electronic Goldmine used to have blue neons, but ran out a while. However they now have some evil green ones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159595",
"author": "killbox",
"timestamp": "2010-07-16T23:13:15",
"content": "If anyone finds a source/part# for those blue neons, i must get some for my dad..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159609",
"author": "Joscience",
"timestamp": "2010-07-16T23:52:59",
"content": "@killbox et al.:http://tinyurl.com/2vc2ol6",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159611",
"author": "dumbass",
"timestamp": "2010-07-16T23:57:01",
"content": "IT’S NOT NEON!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159729",
"author": "Tony",
"timestamp": "2010-07-17T11:24:05",
"content": "Blue:http://www.jaycar.com.au/productView.asp?ID=SL2695Green:http://www.jaycar.com.au/productView.asp?ID=SL2696Ye Olde:http://www.jaycar.com.au/productView.asp?ID=SL2690That’s the AU Jaycar site, try your local one with those part numbers.They’ve been out for a few years, like the site says I brought a few out of curiosity.Seehttp://www.tinaja.com/glib/muse136.pdffor a ‘twinkle light’ circuit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159772",
"author": "st2000",
"timestamp": "2010-07-17T12:58:00",
"content": "E-gads, one face plant and you’ll lose your LSB’s!(Least Significant Bits)I think you should complete your steam-punk (that they way people spell it?) look and add some miniature metallic rack handles to the front. Some contemporary cabinet pulls might do the trick. But I think what you are really looking for are card pulls in the shape of a “U” bolts found on some electrical equipment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159841",
"author": "WA5ZNU",
"timestamp": "2010-07-17T18:10:27",
"content": "I suspect the neon lamps aren’t using “blue phosphor” but a different gas mixture. Using a phosphor requires (I think) requires capture of a higher energy level light source which then gets “downconverted” to a lower frequency/longer wavelength by the later emission. So that would take something like UV being emitted from the lamp gas itself, which is unlikely. (Interestingly, white LEDs generally DO use phosphor, and old CRT screens as well, though their higher-energy source is accelerated electrons.)If you overdrive an orange neon bulb it will glow blue but not the blue of these pictures. Also, the “All Spectrum” sales site mentioned shows a data sheet in Chinese, which probably means these bulbs are of new manufacture, and aren’t NOS from pre-1970’s. So it’s reasonable to think they are a new design.Leigh.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159855",
"author": "Tony",
"timestamp": "2010-07-17T19:24:26",
"content": "They use different gases, just like normal ‘neon’ signs do. The blue ones apparently use argon, dunno about green. There is no phosphor like LEDs or flouro lights use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159857",
"author": "Michael Bradley",
"timestamp": "2010-07-17T19:26:28",
"content": "@Joscience: Are you near van nuys? I googled ‘All spectrum electronics’ Have you been to all electronics? I am in woodland hills, small world if you are in the sfv.–mike",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159970",
"author": "Joscience",
"timestamp": "2010-07-18T06:46:45",
"content": "If you saw these in person, you would know they are definitely phosphor lamps, the light is just obviously different than some “pure” spectral emission of single gas. They are argon-filled (these aren’t mercury doped, but some are), which produces UV emissions at the right pressure/voltage, which in turn excites the phosphor coating on the interior of the bulb. It is easy to verify this by seeing that a) there is a white, powdery coating on the interior of the bulbs and b) holding them near an intense UV source makes them glow blue.It turns out this is the way every color but orange is produced in neon signs. Which basically means that most of the time when referring to “neon signs,” there isn’t really any neon to be found.@mike- I’m over the hill in Santa Monica. They storefront for All Spectrum is actually for their avionics business, not their electronics, so there in no physical browsing. They do have local pick up though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160052",
"author": "Tony",
"timestamp": "2010-07-18T14:13:11",
"content": "It always help to check things rather than rely on memory.The green ones I have use a phosphor, but I have two types of blue, some are clear and the others have a phosphor.The phosphor ones are brighter.Interestingly, I also have a single purple one, no phosphor. I wonder where I got that.A bit of reading later says they all probably use argon, but the clear blue ones will have some mercury as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160089",
"author": "Joscience",
"timestamp": "2010-07-18T16:51:49",
"content": "I would love to see the “pure gas” blue one if you have a picture! They purple too! They sound very cool. Are they little lamps? I have a set of those gas-discharge tubes filled with a variety of gases used in spectroscopy labs. However, they are big (6″ long), require a special fixture to power (they need about 1kV to fire), and are pretty dim. I would love to get my hands on some little lamps that produced novel colors from direct emissions, not phosphors!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "215554",
"author": "Grunergy",
"timestamp": "2010-11-20T20:53:26",
"content": "The most effective available control technologies needs to be clean and innovative. Experienced scientists and engineers play a big role in the BACT world.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.437671
|
||
https://hackaday.com/2010/07/16/decapping-integrated-circuits-with-sap/
|
Decapping Integrated Circuits With Sap
|
Mike Szczys
|
[
"chemistry hacks",
"classic hacks"
] |
[
"chip",
"nitric acid",
"reverse engineer",
"rosin"
] |
[James] is interested in
reverse engineering some integrated circuits
. One of the biggest hurdles in this process has always been just getting to the guts of the chip. He used acetone to dissolve the plastic case but had trouble getting through the epoxy blob. Commonly,
the epoxy is soaked in nitric acid
for a few minutes but [James] didn’t have access to that chemical. Instead he popped into the local music store and picked up some rosin (used to make violin bows sticky enough to grab the strings of the instrument). After boiling down the rock-hard rosin and the chip for 20 minutes, he got a clean and relatively undamaged semiconductor that he can easily peer into.
| 26
| 26
|
[
{
"comment_id": "159501",
"author": "cpmike",
"timestamp": "2010-07-16T17:46:38",
"content": "To what end, curiousity? Can a chip really be analyzed visually like this, to make any determination as to its function? I would imagine that it can’t help much more than normal creative testing of the existing pins…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159502",
"author": "catzburg",
"timestamp": "2010-07-16T17:47:54",
"content": "Sure if you get good enough magnification you can see the individual transistors, though most of these chips are multi-layer so you have to dissolve through the layer one at a time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159509",
"author": "Erwin",
"timestamp": "2010-07-16T18:07:03",
"content": "Check the latest hitb slides, there was one about thermo analysisng chips to find out their functions.You can do it when the device operates so I guess its how jack bauer steal military secrets from embedded devices and uploads them to CTU :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159513",
"author": "Jake",
"timestamp": "2010-07-16T18:17:57",
"content": "@cpmikeAbsolutely. My company regularly decaps/X-Rays IC’s for various purposes. Usually it’s to explore the possibilities of patent infringement, lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159514",
"author": "spiritplumber",
"timestamp": "2010-07-16T18:18:47",
"content": "It can also be used to get an idea of what’s in a chip that may let you reprogram it. Do those pins lead to an internal eeprom directly? JTAG? Level shifter for a serial port?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159521",
"author": "Jon",
"timestamp": "2010-07-16T18:35:52",
"content": "Another hackish way of decapping is just to simply take a blowtorch to the chip. It’ll become very britte and fall apart, except for the die itself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159522",
"author": "LarrySDonald",
"timestamp": "2010-07-16T18:37:54",
"content": "Doesn’t look that undamaged but hard to tell w/ low magnification. Nowhere near well equipped enough to start trying anything anyway though so I dunno. Nurdrage (no relation to them, but have used their demos at times) have pretty good instructions for making small amounts of Nitric Acid from OTC only, supposing it’s only unavailable rather then illegal. Needs heavier concentrating, but then it’s not like you need much if you’re just decapping with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159524",
"author": "mungewell",
"timestamp": "2010-07-16T18:37:58",
"content": "Interesting… I wonder if the ‘oil’ (really a sap-derivative) which they use for dust control on North American gravel roads would work the same way. It comes in 55gal drums at a reasonable price, and I’m sure the local MD could spare a litre or two.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159525",
"author": "steeve",
"timestamp": "2010-07-16T18:38:29",
"content": "I wonder whether the chip still works!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159526",
"author": "Chuckt",
"timestamp": "2010-07-16T18:46:28",
"content": "LOL. Our company paid to get rid of their nitric acid. We could have just given you some. Now we would have to order it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159573",
"author": "Brent",
"timestamp": "2010-07-16T21:06:56",
"content": "You sure he’s not making Meth? ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159578",
"author": "Chuck Norris",
"timestamp": "2010-07-16T21:38:06",
"content": "Nitric acid is used for explosives, not for meth",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159631",
"author": "Jonathan Wilson",
"timestamp": "2010-07-17T01:55:38",
"content": "One use for decapping chips is when the chips contain internal ROM, decapping can be used to read it out. If it contains mask ROM, you can decap it and photograph the ROM. In some cases you can decap the chip, disable the protection circuitry and read out the data.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159638",
"author": "hyte",
"timestamp": "2010-07-17T02:38:13",
"content": "careful of rosin fume, it will give you asthma. we used to encase the chips in Bakelite then polish, it worked well. Nice to see different options.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159675",
"author": "Vonskippy",
"timestamp": "2010-07-17T05:52:43",
"content": "What rock does this guy live under?You can buy Nitric acid pretty much anywhere.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159682",
"author": "James",
"timestamp": "2010-07-17T06:47:24",
"content": "@Vonskippy, I live under the really big one called Africa…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159686",
"author": "Tachikoma",
"timestamp": "2010-07-17T07:10:12",
"content": "Fuming nitric acid? Really?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159775",
"author": "Fallen",
"timestamp": "2010-07-17T13:24:03",
"content": "Hmm didn’t realize flux could do that.(that sap is just rosin…it’s been used in solder forever)I wonder if rosin sap is more effective than just using a bottle of rosin flux. Hmm would no clean fluxes work as well?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159789",
"author": "catzburg",
"timestamp": "2010-07-17T14:58:24",
"content": "@FallenI can’t tell if you are joking, so no, no clean wouldn’t do the same thing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159801",
"author": "Drone",
"timestamp": "2010-07-17T15:44:25",
"content": "Sparkfun has a very interesting series of identifying fake ATMEL processors they purchased via decapitation at the ATMEL laboratories. Start here and drill downhttp://www.sparkfun.com/commerce/news.php?id=395Yes Nitric Acid is involved. Good readRegards, Drone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159813",
"author": "kabukicho2001",
"timestamp": "2010-07-17T16:08:09",
"content": "the rosin can be dangerous, boiling would produce toxic gases.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159814",
"author": "Shocked",
"timestamp": "2010-07-17T16:09:45",
"content": "Pretty sure that the chip doesn’t work (at least properly) after boiling it in rosin at +320 C for 20 minutes. With large geometries could be lucky enough though.I think that may be good for failure or topological analysis (like reading a rom) but not for an active attack. But if nothing is going to be lost trying… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159827",
"author": "Jayson",
"timestamp": "2010-07-17T16:52:22",
"content": "Wow!There’s a music shop still open?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159934",
"author": "Terry",
"timestamp": "2010-07-18T02:48:56",
"content": "If a hobbyist in the US wanted to do this with fuming nitric acid where could I find some? I understand the stuff needs to be handled very carefully, with proper safety and ventilation and not disposed of in an unsafe way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159984",
"author": "Anonymouse",
"timestamp": "2010-07-18T08:40:09",
"content": "@Terry,Not sure if you will be able to get it, one of the uses of it are making explosives, and you live in the usa…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160040",
"author": "M4CGYV3R",
"timestamp": "2010-07-18T13:36:33",
"content": "@JaysonWhere else do people buy pianos and guitars and such?Even in my relatively small home town, we had at least 6 or 7 dedicated music shops, not including the 3 Guitar Centers, which is like the sell-out version. Cheap MIDI controllers though.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.642753
|
||
https://hackaday.com/2010/07/16/cnc-build-ditches-rods-for-hardboard/
|
CNC Build Ditches Rods For Hardboard
|
Mike Szczys
|
[
"cnc hacks"
] |
[
"hardboard",
"rack and pinion",
"reprap",
"selective laser sintering",
"sls"
] |
This is
a redesigned x-axis
for [Peter Jansen’s] selective laser sintering rig. We looked in on
his SLS project
last month and since then he’s been refining the design. The new component uses a rack and pinion system, relying on some Kapton tape to reduce friction for a nice smooth slide. One stepper motor powers the laser-cut gear box with four gears interfacing the sled to the frame for stable and accurate motion. Now he’s just got to work out the math/physics that go into finding the optimal gear ratios as this prototype is just a rough guess. If you’ve got the skills to work it out please lend [Peter] a hand as we’re quite excited with where this is going.
| 29
| 28
|
[
{
"comment_id": "159440",
"author": "Moggie100",
"timestamp": "2010-07-16T15:12:27",
"content": "I can’t help but wonder how accurate that is… A while back there was a post on this very site covering the use of a hinged linkage as a replacement for precision rods (wish I could remember its name).I can see problems with skew coming in as well, as the track geometry is rectangular.Not that this should stop anyone having a go, I’d hate to sound all-negative, as its still quite a novel use of materials!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159446",
"author": "parag0n",
"timestamp": "2010-07-16T15:20:51",
"content": "Thats not a servo, its a stepper.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159451",
"author": "Mark",
"timestamp": "2010-07-16T15:28:14",
"content": "There’s a reason why most people go with ground rods, linear rails, and precision ballscrew. It’s about accuracy under load. I realized there’s very little load in this case, but I’m not convinced using laser cut wooden teeth will be accurate or repeatable. Even something as simple as having a humid day could mess with the accuracy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159452",
"author": "medix",
"timestamp": "2010-07-16T15:30:14",
"content": "I’d be more concerned with slop between the ‘rails’ and backlash in the gearbox. If you can deal with those issues, you’ll be just fine.Very interesting take on the idea though..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159454",
"author": "metis",
"timestamp": "2010-07-16T15:49:34",
"content": "the issue i’m seeing is using a material that’s not dimensionally stable. MDF and hardboard are stable, that looks like the crappy “plywood” that’s a veneer on soft wood. easy to laser cut, but warps like a wonk’s version of reality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159455",
"author": "Anders2512",
"timestamp": "2010-07-16T15:50:23",
"content": "Backlash and fast wear… he should use something like a bicycle chain and gear for the rack and pinion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159458",
"author": "ril3y",
"timestamp": "2010-07-16T15:58:04",
"content": "lexan / plexi cost much more money than hardboard. As I normally do, I will prototype with masonite then change to something like Lexan when the build is all worked out.I think Peter is doing the same sort of thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159460",
"author": "Mike Szczys",
"timestamp": "2010-07-16T16:05:49",
"content": "@Moggie100: I believe you are thinking of theSarrus Linkage.@parag0n: Indeed, fixed.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "159867",
"author": "Moggie100",
"timestamp": "2010-07-17T20:18:15",
"content": "Thanks! That’s been driving me crazy!",
"parent_id": "159460",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "159465",
"author": "Raged",
"timestamp": "2010-07-16T16:30:19",
"content": "instead of tape why isn’t he using little wheels to hold the platform up?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159482",
"author": "barry99705",
"timestamp": "2010-07-16T16:46:31",
"content": "@ MarkRack and pinion works quite well, as long as you use good parts. Wood wouldn’t be my first choice though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159496",
"author": "peter",
"timestamp": "2010-07-16T17:31:00",
"content": "hi folks,neat to see this up here! :)to your questions, there are definitely better ways to build an x/y axis, if you have a set of precision parts available (like ground rods, belts, etc). the goal of this project is to set all that aside and say, i’d like to build a 3D printer that can be *entirely* laser cut (and therefore, also likely printed), with the only vitamins as nuts and bolts — things that would be available at the simplest of hardware stores. the reason i’ve undertaken this design goal is to make the project widely accessible, meaning that as long as you have access to the laser cut (or, potentially, 3d printed) parts, you could create the entire device in an afternoon with nothing more than a box of standard screws and some tape. the *ultimate* goal of keeping it accessible is that 1) the parts would be easy to come by, 2) people of limited technical skill could easily assemble it (say, in an afternoon, as a project with your kids), and 3) it would be extremely inexpensive compared to similar technologies, meaning that even very low income folks could afford it — in this case, the entire axis featured here is $7 total ($1 in material, $1 in screws, and $5 for the stepper). Using acrylic brings this up to about $10, but I’m using the hardboard to prototype the design and work out the bugs.ultimately, in terms of its use for the open sls 3d printer, you can think of it in terms of a bootstrap device — it may not be terribly high precision right now (about 0.3mm accuracy, in its current configuration), but that’s easy to change. And, like a repstrap to a reprap, you could inexpensively print out a better, more precise linear axis upgrade design using the linear axis as a component of printer itself.i tested a bunch of other designs for a complete 2-axis x/y system using linear slides (even using idler wheels, someone mentioned this earlier), and these are detailed on the reprap builders blog in earlier posts. each had issues with shearing or binding, and this new design is just fantastic in those respects. with the proper spacing between the gantry and the linear rails, things seem to work really well — far far better than you’d expect. there’s definitely going to be some backlash in the system, which i haven’t fully characterized yet (to see if its relatively constant), but that’s mediated by the fact that for rastering (for, say, SLS) you only go in one direction, then back in the other — so you never have to deal with any backlash issues, only monitoring endstops. i can only imagine the motion will get better with a better aligned gearbox — i just eyeballed this one, so its fantastic that it works at all! :) i have also thought of making a version with an etched encoder strip on the linear axis, so that you could sandwich the axis between a cheap opto endstop and have an okay encoder available to you.the real creativity and innovation in this project is seeing what you can do when you limit yourself to a given set of build tools and media, with the (possibly lofty) goal of creating an accessible, inexpensive (under $200), and easy to assemble 3D printer for novice makers everywhere to enjoy.(if other grad students or folks with access to maker tools with an engineering/computer science background are genuinely captivated by this project and would like to help the design and building efforts, please feel free to send me a message — my phd thesis takes up a great deal of my time these days, and extra helping hands who are genuinely inspired by these ideas would be wonderful!)be well",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159512",
"author": "PolyJetter",
"timestamp": "2010-07-16T18:12:59",
"content": "“Even something as simple as having a humid day could mess with the accuracy.”What about UHMWPE? It is fairly cheap and is laserable. I should slap some on my laser cutter and see how accurate it is able to be laser cut.You could always waterjet cut it but that requires access to a waterjet. Or make the racks out of aluminum or stainless? Or hardened steel that you waterjet cut to avoid changing the temper? A waterjet would give you the accuracy you would need in a material that would be stable and wear resistant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159515",
"author": "theguynextdoor",
"timestamp": "2010-07-16T18:20:36",
"content": "@peterWhile I do understand that you want to keep the complexity and cost down, I still don’t think that’s an excuse to make a subpar system.You are already using exotic parts and tools (lasers/steppers) so I really don’t understand why you aren’t using at least things like roller blade bearings and such.In any case – keep up the good work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159530",
"author": "andrew",
"timestamp": "2010-07-16T18:56:05",
"content": "Hi Peter, I really appreciate what you’re trying to do and the progress you’ve made so far. Keep up the great work!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159532",
"author": "andrew",
"timestamp": "2010-07-16T19:01:30",
"content": "Where can I find $5 stepper motors?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159558",
"author": "Jake",
"timestamp": "2010-07-16T20:19:14",
"content": "@andrewYou wouldn’t believe the steppers that I’ve gotten out of old lab equipment. Find a large university that has a surplus store, or that auctions off old equipment. I get old lab equipment for $5 that contains massive transformers, various steppers, etc inside of it. I rarely buy new parts, I have so much used stuff laying around from scrapping stuff like that. Best part is, I almost always break even or *make* money off of the equipment as it is generally of aluminum construction and is worth more than $5 by weight. I wait until I have enough to fill my car’s trunk, then take it in to the scrap yard!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159614",
"author": "bud",
"timestamp": "2010-07-17T00:08:38",
"content": "i like the idea, if you have a laser cutter it would be very cheep, and a 3d printer unlike a mill or a router he does not need to be repeatable to .001″. he can probably get up to about +-.02″..good enof",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159617",
"author": "PolyJetter",
"timestamp": "2010-07-17T00:41:15",
"content": "What if you combined this idea with the DIY 3d printer idea mentioned a few posts back? Backlash isn’t an issue because you are only going to move in one direction and you only need to move the elevator down. It would be much simpler than a ballscrew system and would be possibly even 3d printable so you could actually reproduce it. That or laser cut it – the accuracy should be fine for 3d printing applications.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159688",
"author": "diago",
"timestamp": "2010-07-17T07:41:35",
"content": "@bud+/- 0.02″ = +/-0.51mm.I don’t think many folks would be happy with 1mm misalignment registration steps all over their parts…The main concern between a mill / router vs 3d printer / laser cutter is whether there is a significant load on the head during “processing”. Mills / routers need to be incredibly rigid to retain their accuracy and repeatability under load (i.e. when the head is cutting).For me, the repeatability on a 3D printer needs to be at +/-0.1mm = +/-0.004″ to be useable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159714",
"author": "MRE",
"timestamp": "2010-07-17T10:51:04",
"content": "You really should consider spring loading the gears on one side of the rails, such that they push the whole head onto the opposite rail. This will help a lot in dealing with lash, binding up, bad alignment, and possibly some of the accuracy issues as well (half and quarter-stepping the motor is pointless if the teeth never engage due to slop). Come up with a system in which two gears are stationary on one rail, and the opposite side gears are individually sprung.Also, in terms of accuracy, smaller pitch (tooth size/counts per inch) generally leads to higher accuracy and less lash.I like how you slaved all the gears to the stepper (it is a nice simple mechanism that way), but generally, you *don’t* want to do that.Driving only one gear on each rail is the best way to go. With “4 wheel drive,” the head is less able to deal with lash, and you have less design options to counter the problem.I like the kapton tape. A lot of people will bitch at you for not using skate bearings. Don’t listen to them. Lots of high precision industrial machinery use teflon or plastic slides.In fact, if you tear apart some of those 100 dollar plus slide blocks, you will find plastics inside.Skate bearings are NOT going to be more accurate. Regardless of design (slides or bearings) they can be only as accurate as the surface they travel on. But with bearings, unless they are 100% perpendicular to the direction of travel, will offer up all sorts of binding and mistracking. The only advantage bearings have over slides is lower friction, and could actually introduce *more* points of slop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159717",
"author": "MRE",
"timestamp": "2010-07-17T11:00:36",
"content": "oh.. and this might sound like a *crazy* idea, but trust me its not:since your envelope is rather small, you could spring the whole head to one end of the rack. you would effectively have zero backlash, and the modification would be two holes and a spring.You just need to find one that has a pull force just a bit more than the weight of the head and stepper. a letter weight scale (perhaps 2) might about right.This has been done on a few machines I have worked on using pneumatic cylinders at low pressures rather than springs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159791",
"author": "peter",
"timestamp": "2010-07-17T15:29:46",
"content": "the steppers that i’m using are KP35FM2-035, which i get at sayal electronics (http://www.sayal.com/ActionIndexP.asp?ID=162138), which has a bunch of stores in and around toronto, ontario, canada.mre, those are some really interesting ideas! keeping with the reprap philosophy and ideal of making 100% of the parts rapidly prototypable, the current design (save for some tape, and possibly glue, as well as the stepper) is nearly entirely 3d printable, were one to replace the screws with printed plugs or shafts. the whole idea of this project is that there are a LOT of ways to build a successful axis if you have access to any parts, but with some creativity you might be able to come up with comparable methods using entirely laser cut or 3d printable parts. so i’m not sure if i would be willing to add springs yet, for the following reason:the springs are intended to keep the axis tight against the linear gear, to prevent any slop — but i can design the linear gear to slide in then be snugged up with some bolts (and, infact, did this the other day :) ), dramatically reducing the slop.trying to drive with two instead of four gears (and having two “idler gears” is an interesting thought — i wonder how well it would work? it would certainly make the captive gear box far less complicated…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159820",
"author": "Mike",
"timestamp": "2010-07-17T16:41:16",
"content": "I get lots of stepper motors by dismantling old printers and scanners. Friends of mine know that if they are getting rid of an old printer or scanner that I’ll tak eit off their hands.These are also a good source for ground rods. I’ve got a selection of rods from 6mm to 11mm in diameter from various devices. The trick is finding two identical – easiest if you can find two very similar printers as each maker uses a different size.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160056",
"author": "mre",
"timestamp": "2010-07-18T14:32:55",
"content": "Peter redesign with less slop = good!One concern with two vs four drive is it might lift on the idler side.Give it a try.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160062",
"author": "Hacksaw",
"timestamp": "2010-07-18T15:30:17",
"content": "OK so instead of springs what about something like surgical tubing? I have no experience with 3d printing but I do have a little with molding and have successfully made “stretchy” tubing in a pinch using a straw and wire for a mold and RTV as the fab material.It didn’t last long but it was off the shelf material.If you are going to be3d printing you are going to be resourceful in materials acquisition anyhow so why not get started right away !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160366",
"author": "SOI Sentinel",
"timestamp": "2010-07-19T16:32:41",
"content": "Many lightweight industrial designs use two stacked spur gears with a torsion spring between them. This pushes the design “out” of the rack, but against the far rail instead, or against a precision glide on the back of the pinion. This reduces the need for absolute accuracy of the gearing itself and allow for automatic wear compensation. The rule of thumb for most industrial designs is W<2*D. The width of the separation of the rails (or drive gears if uses as supports) should not be more than twice the distance between the front and rear support areas/wheels/gears. This prevents binding in a passive manner.As long as you don't push harder than the spring can push back, you'll get zero backlash operation. This type of spring could easily be printed out of a more flexible plastic (similar construction to the Mendel chassis springs IIRC).Guess it's time for me to catch up with the reprappers again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "160377",
"author": "JCosman",
"timestamp": "2010-07-19T17:06:25",
"content": "just continuing the ideas set forth on these replies. driving a single gear from the stepper will give you the biggest bang for the buck. those other gears can just be tensioners, and in all R&P tables I’ve seen, any extra “wheels” on the rack are independently adjustable. every iterative design I’ve seen progress has settled on that solution, and for good reason, too. driving the pinion independently of the other gears does two things, you can design different ratios for your motor without drastic alterations, and it makes tramming the assembly easy enough for a 10 year old.wonderful work, btw. I love seeing these things on HaD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "161046",
"author": "epilfesee",
"timestamp": "2010-07-21T22:59:44",
"content": "18 15 Uhr Ab Ostkreuzfilme onlinefilme videothekDas Echo der Schuldvideoclips runterladenkinofilme downloads online filme runterladen",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.708783
|
||
https://hackaday.com/2010/07/16/general-purpose-robot-remote/
|
General Purpose Robot Remote
|
Caleb Kraft
|
[
"Robots Hacks"
] |
[
"remote",
"robot"
] |
[youtube=http://www.youtube.com/watch?v=uuwb3fn51r4]
[theGrue] has posted his
Robot remote control project
for us to gawk at. This box o’ buttons is a parallax propeller brain with some Xbee units for communication. Though it was designed to work with
TOBI
, his tool carrying robot, he made it so that he could control a multitude of robots with it by flipping some switches on the front of the remote.
[via
Hacked Gadgets
]
| 10
| 10
|
[
{
"comment_id": "159423",
"author": "biqut2",
"timestamp": "2010-07-16T14:14:24",
"content": "really like the idea of having it work for multiple bots",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159424",
"author": "McSteve",
"timestamp": "2010-07-16T14:15:19",
"content": "Crazy remote, controlling “A multitude of robots?”For some reason this totally reminds me of the bad 1993 movie “Remote”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159443",
"author": "dmcbeing",
"timestamp": "2010-07-16T15:16:35",
"content": "Hmm nice implementation but somehow i dont find it extremly intuituve to use, that and also at 1:15:AH my eyes!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159463",
"author": "aztraph",
"timestamp": "2010-07-16T16:25:41",
"content": "yes, but can it bring me a beer?Seriously, nice build but wouldn’t it be easier to use a wii remote? that’s about what he’s built.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159468",
"author": "Dosbomber",
"timestamp": "2010-07-16T16:38:38",
"content": "A few years ago I built what I called a “Universal Calibrator” device which interfaced (wired, though, through either a 9-pin D-Sub or an RJ-45 with an adapter) to many of the PIC devices I was building at the time. Basically a single device to interface with multiple devices to get into a setup menu to change variables in the EEPROM memory or similar (depending on the target device) sorts of functions. It worked with a few devices, but I eventually ditched it because programming the target device with special code to detect and talk to the calibrator ended up being more hassle than it was worth.How is the accelerometer control interface working out? It seems like something you’d have to get used to. Being from the “Atari Age”, I find a joystick to be more intuitive. :) Also, an analog joystick would be easy to sense just how far a person was tilting it to vary the robot’s speed. Can’t you do that with the accelerometer?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159571",
"author": "NatureTM",
"timestamp": "2010-07-16T21:04:13",
"content": "At least you know no one will ever pick it up and think it controls a Wii or a TV. Definitely controls robots.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159681",
"author": "TheGrue",
"timestamp": "2010-07-17T06:46:14",
"content": "The accelerometer is quite easy to use to drive TOBI even in the tightest spaces of office buildings. To be more clear, the SPD or speed switch tells the robot to limit its maximum speed even if the accelerometer is sending faster speeds. The controller just sends the accelerometer readings with several variables that alter the behavior of the robot.We shall see how well it will interface with TOBI’s big brother soon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159697",
"author": "accordxue",
"timestamp": "2010-07-17T09:07:00",
"content": "I eventually ditched it because programming the target device with special code to detect and talk to the calibrator ended up being more hassle than it was worth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159720",
"author": "Whatnot",
"timestamp": "2010-07-17T11:12:54",
"content": "He should have made the casing of those slide switches black before putting the cover on, a black marker might be enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "159725",
"author": "Whatnot",
"timestamp": "2010-07-17T11:15:49",
"content": "Addendum: on the marker advise; in chinese products they often just put a piece of black paper over the button that slides along inside the case, it looks nicer and stops dust from getting in them.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,405.754354
|
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