<aside> 🔧 This is the build guide for the Sofle Choc Kit from https://choc.brianlow.com/

</aside>

Isolate the problem

Disconnect parts and test them independently. Disconnect the TRS/TRRS cable between the halves and diagnose the left half:

• [ ] Remove the ProMicro from the PCB, connect to the computer.
  • [ ] Does the light turn on and can you flash it?
  • [ ] Does the computer recognize a keyboard is attached?
• [ ] Install the ProMicro into the PCB, connect to the computer.
  • [ ] Does the light turn on and can you flash it?
  • [ ] Does the computer recognize a keyboard is attached?
• [ ] Press each key, do they register on the computer?
• [ ] Do all the LEDs under the keys glow red?
• [ ] Does the OLED display some text?
• [ ] Repeat the above with the right half
• [ ] Repeat the above with the TRS/TRRS cable connected to both halves

<aside> 💡 Remember to power off the keyboard (disconnect from the computer) before connecting/disconnecting the TRS/TRRS cable to avoid shorts.

</aside>

Solutions

ProMicro doesn’t power up, is excessively hot, LEDs flicker

• [ ] Check for shorts, especially around the microcontroller socket where pads are close together

  

• [ ] Check LEDs are oriented correctly: angled corner aligned with triangle on PC

• [ ] Check ProMicro legs are similar length, any legs shorter than other legs by 2-3mm may not make contact

• [ ] Clean off excess flux, some reports of slightly conductive fluxes

Single key not working

• [ ] Check switch socket is soldered on