2023-05-29 (M) KeyBoardolier Care Bear Keyboard programming

I wrote a debouncing function to test the diode matrix array, but it did not work. When I stripped out some of the collating code, I saw serial activity, and it let me correct it. The process recognized rising edges, so I could remove the delay that periodically reported every button state. The result was a clean report whenever I pressed a button. I printed the keypress as a two-digit number that reflected its position in the matrix.

I sketched a key layout but discarded media keys, like volume and mute, because they would require extra work to function with an Arduino Micro. I wanted to type a few symbols like omega and degrees, so I used alt-codes, like alt+234 = Ω. I had to use the decimal codes to ensure the computer understood I was using the numpad keys, but it worked well. My escape key also released any stuck keys, which is probably a good idea for home-brew keyboards. A couple of keys were not used, so I gave them elaborate combinations that would be inconvenient to type by hand, but AutoHotkey would recognize handily. Care Bear Keyboard is complete.
Connected and typing

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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