Got the PuzzleBox32 Mini up and running with GRBLHal.

1. Tested all limit switches (TL-W5MC1) and they are working!
2. Tested the probing and it's working!
3. Tested movements on all axis and they are working!
4. Configured GRBL settings for correct direction, step sizes, limit switches
5. Tested old PWM board - sent 10V back to the ESP32 and that was unfortunately (luckily this was done on a demo board, so it didn't fry the PuzzleBox32 Mini)

Next, the PWM board will be redesigned and made. 

Most of all, the optical hole finding code needs to be updated to be more automatic (Baby steps...)