Small and cheap low profile split keyboard with 36 keys using RP2040 Zero microcontrollers.
- 36 keys
- low profile choc switches with hotswap and choc spacing
- per-key RGB matrix
- Waveshare RP2040 Zero controller
- QMK firmware
- TRRS connection between splits (can use USB-C instead but not recommended, too low for many cables)
- Panasonic EVQWGD001 roller encoder (left side only) or EC11 rotary encoder (both sides)
In STL folder - files for left/right parts. Left also has a version for roller encoder (make sure to order both top and bottom with roller).
Prices for EU with taxes and shipping
Total cost with required parts: $42
- PCBs - $6 (JLCPCB)
- Case (4 parts) - $13 (JLCPCB, white resin)
- 2 Waveshare RP2040 Zero MCUs - $8.5
- 36 SMD SOD-123 1N4148 diodes - $2
- 1 or 2 EC11/12 rotary encoder with knob - $5
- Panasonic EVQWGD001 roller encoder - $9, optional
- 6mm M2 screws with flat head and nuts - $4
- TRRS PJ-320A connectors - $1.5
- TRRS cable - $2
- RGB LEDs - $8.5, optional
QMK:
Vial:
For proper KiCad setup install my zzkeeb library.
- 2023-06-25 - new case with magnet and feet holes, new Fusion 360 project with design history