Compatible mechanical replacement keyboard for the C128

Generic

• Keys: Gateron Green

Concept 1

Build regular keyboard with classic standard connector

Pro: Trivial construction Con: There's no mechanical switch that toggles

Concept 2

Build a keyboard with a digital switch matrix and use a much thinner and more lightweight cable

Pro: No mechanical toggle switch required Con: More expensive, requires power supply

Parts:

• RP2040
• MT8816 (Datasheet)

Keyboard Layout

Key Matrix