Need help!

[NexohLab]

Hi! I’m in a similar (very similar) situation as You were. I have nrf52840 pro micro. I burnt pin marked as 111 which appears to be D14. Now, how do I identify which PIN is free? I am also using sofle but I have wireless RGB choc version. Do You mind helping me out?
I understand that I have to cut off the burned pin, then flash the firmware and all should be fine right?

[DLBPointon]

Hi @nxtkofi

I wrote up more about it on https://dlbpointon.com/Projects/Keyboards/Sof where there are a couple of pictures to help with mapping the pins against each other

D14 on the supermini looks to map to pin 14 on the ProMicro.

Figuring out which isn't in use involved using tweezers and making sure it didn't output anything, always starting with the last usable pin. So in it's current broken state, bridge the gap between pin 21 and the others, if nothing prints then you're probably good.

If you know what your reading too, an easier option will be reading the overlay files here: https://github.com/DLBPointon/zmk-config-sof/blob/main/boards/shields/sof/sof_right.overlay and https://github.com/DLBPointon/zmk-config-sof/blob/main/boards/shields/sof/sof_left.overlay. These tell you which pins are in use, in that case you can use what ever isn't noted down.

Hope this helps!