Firmware flashed, Receiver LED's all on, but nothing works

[Julian-Kobylanski]

What has already been done:

1. Keyboard assembled
2. Receiver assembled
3. altered the firmware to feature 1 encoder on the left side and 1 column less on both sides (changed redox-w-keyboard-basic/main.c and redox-w-keyboard-basic/config/redox-w.h; )
4. Firmware flashed
5. Changed USB Cable

What the current problem is:

• When I connect the Receiver with my PC all 4 lights are on, the light on the pro micro (adafruit kb2040; pro compatible) is also on
• Device does not show up anywhere, no typical "Windows usb-connected sound" -> Bad USB-Cable
• No input is working
• Reset switch seems to be doing something -> Light on pro micro resets

What I've not tried:

• check soldering work
• dig deeper to find the usb device somewhere

[PhiBabin]

If I were you, I would try adding enabling the debug print of the QMK and check the hid_listen. This would validate that the pro-micro can communicate with your computer. Cheap pro micros are very brittle, so it might be worth trying to solder a different pro micro. On mine the USB connector keep unsoldering.

BTW I also implemented a wireless redox with an encoder. Here the redox firmware code and the QMK firmware code. I need to create a repo with the KiCAD project of the PCB.