Keyboard Builders' Digest
Keyboard Builders' Digest / Projects

Pinci the keyboard

An ultra low profile 34-key build by sproutless with RP2040 and Rust firmware.

Inspired by other open-source projects like the Ferris, Fifi and KeySeeBee, sproutless designed and built his own version of a low profile split.


  • Raspberry Pi Pico (RP2040)
  • 34 key layout with two thumb keys skewed outward
  • No diodes, direct switch-to-GPIO connections
  • Reversible PCB
  • Kailh PG1232 Low Profile Switches
  • TRS capable hardware (normal headphone cable)
  • Minimal SMD components and no THT components


The firmware is written in Rust using the Keyberon library (and more).

Git repo:

Published on Thu 30th Sep 2021. Featured in KBD #46 (source).


Pteron36 keyboard

Pteron36 - a separate split keyboard designed by smart345bond for Miryoku layout users (git).


The Manta is a monoblock split by GeniuzGames.

ThinKeys 13

ThinKeys 13 by dennisleexyz. A split ortho with TrackPoint for ThinkPad.


On IO expanders

Using an IO expander instead of a second Pro Micro? Posted by scissor_rock_paper.


DracuLad 2nd round protos

DracuLad 2nd round with Puchi C controller and trackball by MangoIV.

3D board from laser cut acrylic

This keyboard housing by kobakos32 is built entirely from laser cut acrylic parts (git).