Controller is from:
- raspberry pi zero
- Waveshare ETH/USB HUB HAT (B) - for network connection
- 2x Keyboard with 12 buttons + 2 knobs, one-handed macromechanical keyboard
Keyboard No. 1 writes letters and ENTER:
KEYS KNOBS
a b c d m n o
e f g h
i j k l p q r
Keyboard No. 2 sends letter and ENTER:
KEYS KNOBS
A B C D M N O
E F G H
I J K L P Q R
Python script osczynthian.py is run after start of pi zero and wait on keyboards input.