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How many speeds? |
8 |
You do realize that this doesn't exist right? |
https://www.aliexpress.com/item/1005006132547228.html |
clutched 8 speed derailleur? |
Yeah, that doesn't exist :think: |
I urge you to research Box, sir |
https://boxcomponents.com/products/box-four-rear-derailleurs-8-speed?variant=35349242052775 |
it exists, but not for cheap |
My friend, I already pinged you yesterday about this üòÇ |
https://discord.com/channels/593205534862082073/593205534862082075/1190531409656422400 |
I might need a new derailleur, if I can't bend it. |
I think I bent it on my last ride |
idk if the hanger bent or the derailleur itself bent, but on the way home last time I noticed it after I had to put my wheel back on |
come to think of it it's been shifting rather sluggish |
Sensah > LTWOO |
LTWOO kind of sucks lol |
Microshift advent. It's what I plan to use to replace my 11spd when that's done being chewed up. |
A friend of mine splurged on a Box 9 setup and says it works well but unless it ends being especially durable it's a bit overpriced. |
I mean they usually are |
Box is some pretty high-end stuff |
IMO, the cable and housing make the biggest difference when it comes to derailleurs. |
Pair that advent setup with a KMC chain (I've also heard the "e-bike" chains are not worthwhile) and see what it costs (I *highly highly* recommend universal-cycles.com). |
Hint: Not. Much. |
It's like $15 for the shifter, $20 for the cassette, and $35 for the clutched derailleur |
$10-$20 depending on which chain. |
Just go YBN üòé |
? |
YBN makes the best chains outside of SRAM at the very highest end where's SRAM XX1 and X01 dominate in durability. |
I've heard Wippleman is the gold standard for durability. |
KMC is supposed to be close to those SRAM chains but cheaper. |
I know I've seen reports of good experiences with that X01 too. |
Buy name brand chain whatever you do. Iv seen aliexpress no-name chain die in hours with shattered rollers and seized links |
I don't know how much you can save that way. KMC chains are not expensive. |
SRAM chains are probably pretty reasonable. |
Exactly, you don't save anything, you waste money. |
These no name chains are actually branded BTW. |
They're just made by ZSC; not exactly the most known chain manufacturer. |
Good lubrication matters most than chain quality TBF. |
legit ybn chains are fine, they're up there in quality |
but fakes for them exist as well just like any other manufacturer |
If there's one thing I've learned with time, it's that the difference between even the cheapest ass chain and the best chains can be massively reduced with good ass chain waxing. |
Iv literally seen chain rollers shatter in the first week. like 30% of most rollers gone lol. fakes 100% exist |
multiple seized links |
Bruh Lol |
Hmm. I wonder why i havent blown up mine |
https://transfur.science/hz0nxeat |
pro tip |
even if the programming software is frozen |
*let it to its thing* for as long as you feasibly can |
have you fixed it? |
no |
i think it wiped the l3 parameters |
so |
I might be fucked if grin doesn't have them |
especially since I can't even probe the thing without grin's help here |
update: grin got back to me, they suspect firmware corruption, they're having me send it back for an RMA repair |
Kind of bad they don’t have a way to flash over SWD or something |
But it’s probably an ASS I dictated thing |
There (public facing) software may refuse to flash if it doesn't recognize the device, so you don't brick your phaserunner by uploading the wrong firmware to it |
This is not really a concern with modern microcontrollers, there's plenty of ways to ensure that doesn't happen |
Really they should have some ID ROM on them from the factory |
It should never be the case that changing parameters bricks the firmware too, I can understand if you got unlucky during a firmware update |
No, the actual firmware revision, since they have made changes to pinout/etc |
Not to mention, you don't wanna be flashing C/A firmware to your phaserunner, etc. |
mark c was just changing some parameters right? |
the 'id rom' is prob part of the microcontroller programming, since they are not going to invest in another microcontroller just to program the first one when microcontrollers can reprogram themselves |
yes |
*shrugs* |
there's virtual eeprom using the mcu flash these days |
lots of options |
I work in a debug team btw |
Yes iv done microcontroller programming myself. |
And at some point, you just go 'ship it, we'll deal with RMA's later' |
especially if your reusing someone elses design (cough) |
Like, if the firmware actually corrupted, then there may be nothing left on the other end to actually talk to the programmer anymore |
(or at least, a microcontroller that isn't listening anymore/stuck in a loop/whatever) |
And honestly, I hate RS232 with a passion so I wouldn't be surprised if it corrupted a few bits on some flashing/parameter change and overwrote god knows what |
(grin programable cable is a USB->TTL RS232 converter, IIRC) |
.. witch is even less noise immune then regular RS232 |
Fun fact: On the computer end, when your RS232 port detects a bad parity bit... the byte is just silently dropped. |
I found no way to even detect that it occurred when I looked into it. |
Just hey, hope that byte wasn't important or anything! your CRC'ing every packet and doing stream position recovery right? RIGHT?!? |
(one of the reasons USB is *far* superiour even for low bandwidth devices. It has actual error detection and packet resending (And actual PACKETS, not some ungodly never ending/beginning stream) |
Yes this new m7 480MHz micro dev board i made is very fancy and has USB DFU |
It comes with no bootloader or anything but if you pull a pin high and connect by usb, you can flash it |
I guess it is sort of a bootloader but not one a user can mess with |
The micro costs less than £5 per unit in bulk |
And has things like a double precision FPU |
I messed up and forgot and left the usb-c CC pins floating. It needs them for orientation detection |
Yea, a fair number of microcontrollers/etc have bootloader areas that can't be rewriten by bootloader lol |
(need to use the ICSP pins, that may be buried/shorted out by the PCB) |
The right angle pin header on this is SWD so you have that as well as usb |
It supports a rechargeable battery for RTC but whoops I used a diode |
Do you like the arbitrary rotation crystals? |
SWD? |
Fucking cursed, this is why you never let people into chaka's align your crystals. |
Serial Wire Debug |
Ah nice. |
Flash and debug the micro through it |
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