Meet the Micro Planck. It’s a simple ortholinear mechanical keyboard in a decidedly compact ... The build relies on Gateron KS-33 switches installed on a custom PCB, with a ATmega32U4 ...

The electronics for the keyboard are simple enough; there are 56 standard through-hole tact switches, and an SAMD21 microcontroller. Connections to the outside world are through a micro USB port ...