Cheapino by tompi

Probably one of the cheapest split keyboards you can build.
This is the result of really enjoying building keyboards, but not wanting to spend that much money on it. The pcb is reversible, connected using rj45, and utilizes a japanese duplex matrix, so only one mcu is needed (in fact it only uses 7 of the rj45 wires to support 18 switches and an encoder on the right side).

Build guide

#mx • #rp2040 • #qmk • #encoder • #36key