Compatible mechanical replacement keyboard for the C128

Generic

• Keys: Gateron Green
• Mods: Add regular PC style arrow keys. FOR SANITY!

Concept 1

Build regular keyboard with classic standard connector

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

Concept 2

Build a wireless keyboard with a digital switch matrix. Have a receiver dongle that can communicate with the keyboard.

Pro: No mechanical toggle switch required, much improved user experience, macro keys Con: More expensive, requires power supply on both sides

Parts:

• 2 * RP2040
• 1 * MT8816 (Datasheet)
• 2 * nRF24L01 (Datasheet)
• 1 * battery power supply
• 1 * dongle power supply

Keyboard Layout

Key Matrix