Hidden USB hub turns ordinary keyboard into Doom console

How to make a keyboard that runs Doom when you press a special key

DOOM Keeb/John Park/Adafruit

The Adafruit KB2040 – RP2040 Kee Boar Driver is a development board designed specifically for custom mechanical keyboard projects ("keeb" builds). It uses a Raspberry Pi microcontroller chip and can be programmed with CircuitPython, MicroPython, or C/C++. It's only $8.95.

Our friend John Park used one to create a keyboard that runs Doom when you press a special key. Watch the video here.