2023-07-10 (M) KeyRyptex Connection testing

I copied some code from the Keyboardolier to scan the diode matrix, then adapted it to fit my 6x6 matrix. The previous code used pins on the microcontroller had more keys and had to assign new presses to a queue. The code partially worked because I got feedback that I pressed all the keys in a column whenever I pressed one. I found an issue with the off-brand IO module, which printed the pin numbers on the PCB but did not align with the Arduino code. I lined up the pins, and everything worked except one column and the letter "H," but that turned out to be a repairable solder joint. I assumed my missing column was an off-by-one error, so I hunted for too long, but when I printed every switch state, I saw the keys were all active, evidenced by the column of ones in the serial feedback. I have a wiring issue.
That first column should be zeroes

The rest of the posts for this project have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8

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