4 This firmware is for a Handwired Atreus50 using an Arduino Pro Micro.
8 The following pins are used:
9 - Columns 1-13: D4, D7, E6, B4, B5, B6, B2, B3, B1, F7, F6, F5, F4
10 - Rows 1-4: D3, D2, D1, D0
12 ## Compiling and loading the firmware
14 To build the firmware, run `make`.
16 To flash the firemware onto the microcontroller, run `make avrdude`, and press the reset button.