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Jhonatan Ferrer's JK206 is an open-source 12x5 ortho keyboard – actually 3 numpads stuck together.
Published March 22, 2024
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Published a few months ago, the JK206 by Jhonatan Ferrer aka Jhoalferco has now a nice stacked acrylic case (not yet in the repo).

Some time ago I designed and assembled the JK206 keyboard, and I was quite happy with the result but it looked a bit fragile, so I designed a new case with gasket mount using stacked acrylic – Jhonatan.

This project consists of a mechanical ortholinear keyboard design that is capable of being used as a macropad/numpad or a 50% keyboard.


This is achieved through the modular design of the PCB that can be used by itself to mount a macropad with up to 20 keys (5 of them can be exchanged for encoders), while with three PCBs you can build a keyboard with up to 60 keys (3 of them can be encoders).


  • 4x5 PCB
  • hotswap, MX
  • optional encoders
  • Raspberry Pi Pico
  • KMK
  • stacked acrylic case



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Published on Fri 22nd Mar 2024. Featured in KBD #159 (source).



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