Hacking Hardware Picofly - a HWFLY switch modchip

remlei · 2024-09-14T00:17:00+0100

lightautodark said:
I believe its *=* in 2.80, I swapped to instinct and it works fine. But I've ordered a rp2040-tiny, will test it out with the 47/100/100 as soon as it arrives. To be fair, it's hard to notice this issue because nobody actually restart 20 times in a row. Most people would just turn it on off a few times to make sure it works before reassembling the switch. The one I had only booted to ofw on the 18th tries the first time.

not its definetly *==, I saw the video he sent to my fb messenger

I also suggested to him to change the resistor values to 100/100/47 as posted here, but he already tried that ages ago as he says and it doesnt work.

this issue is definetly not a soldering issue, resistor values or something, @rehius definetly need the hardware that have the issue to check it out.

else, all I can say is, instict-nx is the only fix or you can just deal with the issue, at least it works.

lightautodark · 2024-09-14T00:43:52+0100

remlei said:
not its definetly *==, I saw the video he sent to my fb messenger

I also suggested to him to change the resistor values to 100/100/47 as posted here, but he already tried that ages ago as he says and it doesnt work.

this issue is definetly not a soldering issue, resistor values or something, @rehius definetly need the hardware that have the issue to check it out.

else, all I can say is, instict-nx is the only fix or you can just deal with the issue, at least it works.

Just seen your post history. Seems like you had this issue back in 2023 and people were saying it was the chip used, the dat0 adaptor, poor soldering job, resistors etc.

I'm backing you up now! Albeit a little bit late

killeriq · 2024-09-14T00:59:11+0100

Installed - Picofly from AE.
First it didnt boot , just black screen. So it tried to double check all solder points.
But the same result.
Tried different FW 2.73, 2.79, 2.80 chip flashed few times BLUE, then White/Green and OFF.

1. When I unplugged the Flex Cable from Chip and Started Switch I sound hear Touch sounds , but LCD Screen was Black all the time

2. Not sure where was the problem, but unfortunately as i was moving IN/OUT the B cable on Board (backside RST i assume) broke the connection and now is not holding anymore

Any clue how else should i try to fix it?

Thanks

lightautodark · 2024-09-14T01:19:21+0100

killeriq said:
Installed - Picofly from AE.
First it didnt boot , just black screen. So it tried to double check all solder points.
But the same result.
Tried different FW 2.73, 2.79, 2.80 chip flashed few times BLUE, then White/Green and OFF.

1. When I unplugged the Flex Cable from Chip and Started Switch I sound hear Touch sounds , but LCD Screen was Black all the time
View attachment 457928
2. Not sure where was the problem, but unfortunately as i was moving IN/OUT the B cable on Board (backside RST i assume) broke the connection and now is not holding anymore Any clue how else should i try to fix it?

Thanks

View attachment 457920

Erm. possibly damaged the display's fpc connector or the flex of your oled screen not inserted properly or damaged...?

remlei · 2024-09-14T01:39:42+0100

lightautodark said:
Just seen your post history. Seems like you had this issue back in 2023 and people were saying it was the chip used, the dat0 adaptor, poor soldering job, resistors etc.

I'm backing you up now! Albeit a little bit late

yep, I first consulted here what exactly is the issue but... well, the usual replies of check soldering and other stuff was the usual recommendation.

But when I personally consulted the installer with the issue, he was actually not surprised about it and says "this is expected with picofly based modchips" but he redid the wiring changing resistors and swapping it with different rp2040 just to be sure and clean the heck out of it but nope, same, but he knows a solution that can grantee fixed the issue which actually cost me extra 20 bucks for that chip, which me was like "well fuck it, use that instead". He even swapped the modchip right in front of me, test it 100 power cycles and all of it are success glitch.

Jkop · 2024-09-14T02:13:41+0100

killeriq said:
Installed - Picofly from AE.
First it didnt boot , just black screen. So it tried to double check all solder points.
But the same result.
Tried different FW 2.73, 2.79, 2.80 chip flashed few times BLUE, then White/Green and OFF.

1. When I unplugged the Flex Cable from Chip and Started Switch I sound hear Touch sounds , but LCD Screen was Black all the time
View attachment 457928
2. Not sure where was the problem, but unfortunately as i was moving IN/OUT the B cable on Board (backside RST i assume) broke the connection and now is not holding anymore Any clue how else should i try to fix it?

Thanks

View attachment 457920

Wire is way too big. Just use jumper wire to repair. I just had to repair one this morningView attachment rst.JPG

abal1000x · 2024-09-14T03:56:02+0100

lightautodark said:
View attachment 457877
Tried rp2040-tiny with 47/100/100 and it still boots ofw 1 in 10 or 15... This is depressing.. firmware 2.75

Edit: cmd dat0 100 ohm

If you have time to experiment. Try to reboot 500times, in lot of power condition.
Everytime new glitch point founded, it will be saved.

Maybe the glitch point is different on battery condition or usb powered.
So the more you rebooted on lot of scenario, the more 'better' it is to find the glitch point.

Hacking Hardware Picofly - a HWFLY switch modchip

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