I have been in the process of building my first custom keyboard (Ferris sweep), I have just finished flashing my to halves, and wanted to test it out, and it turns out that one of the keys doesn’t work. My guess is a poorly soldered joint.
My question for you are, what are my options for troubleshooting this problem, and finding the source of it? (I’m guessing that it could both be from the micro controller, and the key it self)