Klipper Hardware buttons with on Arduino Micro (atmega32u4)

With Klipper complied and flashed to the Arduino (pro) Micro and the buttons soldered, we just have to add some klipper config magic.

I created a buttons.cfg and includes it in the main printer.cfg, this keep the printer.cfg readable and it should surfive a RatOS update

printer.cfg

# near the end before the #*# do not change part
[include buttons.cfg]

bottons.cfg

[mcu button]
serial: /dev/serial/by-id/usb-Klipper_atmega32u4_12345-if00

# pin names can be found by googling "arduino pro micro pinout" and some images have the P... names likeD9/PB5
[gcode_button PB5]
pin: ^!button: PB5
press_gcode: PB5 -  Addyour g-code here

[gcode_button PB4]
pin: ^!button: PB4
press_gcode: PB4
....

Arduino Mirco pinout from reddit