2 layers126.5 × 83 mm
Pcb pro controller
hackclub/OnBoard
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66 parts915
2 layers140 × 92 mm
LillyKey
ElectricTurtle32/LilyKeyAn opensource split wireless keyboard
- Size
- 140 × 92 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 66
- Nets
- 45
- Pads
- 464
- Tracks, vias
- 750, 110
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Jan 2026
- Updated
- 12 Feb 2026
Overview
LillyKey is an open-source printed circuit board by ElectricTurtle32, from the ElectricTurtle32/LilyKey repository on GitHub. It is a 2-layer board of 140 × 92 mm with 66 parts on 45 nets, routed with 750 tracks and 110 vias.
Its parts include 30 diodes, 30 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
README.mdLilyKey
An opensource split wireless keyboard
This keyboard uses low profile Choc V2 switchs, and a XIAO nRF52840 with ZMK. The design fits together with only a few screws on the bottom
Firmware can be found in this
OnShape link. In order to use the link, copy it into your browser, for some reason if you don't do that you get a 403 error. https://cad.onshape.com/documents/438c57f3dff6ca4edb0a97ae/w/4621db7fe7b2abded9ecab59/e/34fd1f2b97a3de8af004570b
I will be buying the lubrication kit, and tribosys 3204 out of pocket, due to overbudget constraints. If required, I will also be buying the diodes and JST connectors out of pocket.
BOM
Parts
66| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | D | Footprints:RevDiode | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +14 |
| 30 | SW_Push | Footprints:SW_Hotswap_Kailh_Choc_V1V2 | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +14 |
| 1 | Conn_01x02_Socket | Footprints:JSTPH | J1 |
| 1 | XIAO-nRF52840-SMD | Footprints:XIAO_nRF52840_DUAL | U2 |
The 62 most common of 66 parts.
Questions
How big is the LillyKey PCB?
It measures 140 × 92 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LillyKey use?
66 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LillyKey KiCad files?
From the ElectricTurtle32/LilyKey repository on GitHub, at the commit this page was made from: the board is KiCad/LillyKey.kicad_pcb and its schematic KiCad/LillyKey.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LillyKey design in my own project?
Its repository states no licence, so its author keeps all rights: ask ElectricTurtle32 before reusing the design.
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