Quirkey Chord Keyboard Shell

This is a keyboard shell for a six-key chord keyboard, based on the Microwriter and Quinkey designs from the 80's. These keyboards allow one-handed touch-typing and are great for use by people with brittle bones or unreliable hand control as the fingers stay in one position and only press down with the finger pads for all characters. The hand rests on the palm swell. A typing tutor program can be found at https://github.com/VikOlliver/Quirkey

The firmware runs on a couple of microcontrollers: