The entire code, as well as the schematic, is available on GitHub for your hacking pleasure. ... Peripherals Hacks Tagged cad, cherry mx, diy, eagle, keyboard, matrix. Post navigation.

The keyboard itself is built around an STM32 microcontroller, which gives it plenty of power to drive and read the keyboard matrix. ... He also open-sourced all of the PCB schematics and other ...

Below is the schematic for Bayleaf. The switch is a simple keyboard matrix, which is standard for small microcontrollers (MCUs).