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PicoSplit is a 3D printed split keyboard by Andreas Känner featuring a custom firmware written in CircuitPython.
Published November 30, 2021

Hotswap, no diodes, firmware written in CircuitPython.

I found split keyboards to be the best, because I can always arrange them so that my wrists are in a relaxed position. I like it even more when the keyboard halves are slightly raised, so that my hands are not completely flat on the keyboard. For me, this is the optimal hand position and the PicoSplit keyboard has such an inclination already built in – Andreas Känner.

While the case is not open-source, the project itself is very well documented:

The firmware is available here:


  • 3D-printable with common FDM printers (closed source, licensable).
  • Shape inspired by the Dactyl keyboard.
  • Magnetically attached wrist rests with adjustable distance.
  • Keyboard and wrist rests can be magnetically attached to a surface.
  • Keyboard halves snap together for transport.
  • The Raspberry Pi Pico can be replaced by something else thanks to slide-in modules.

Published on Tue 30th Nov 2021. Featured in KBD #55 (source).

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