2 layers214.1 × 146.8 mm
2 layers463 × 211.7 mm
Kayboard
karnxx/kayboard- Size
- 463 × 211.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 240
- Nets
- 166
- Pads
- 1,104
- Tracks, vias
- 4,308, 1,321
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Dec 2025
- Updated
- 26 Oct 2026
Overview
Kayboard is an open-source printed circuit board by karnxx, from the karnxx/kayboard repository on GitHub. It is a 2-layer board of 463 × 211.7 mm with 240 parts on 166 nets, routed with 4,308 tracks and 1,321 vias.
Its parts include 108 diodes, 6 resistors and 3 ICs. It belongs with the nRF52 and nRF5x boards of this library.
README
README.mdsplit keyboard - kayboard
https://a360.co/4jg0f7l
basically a keyboard, it can split into 3, which is a left side, a right side and a middle calculator side. so these keyboards can also join together to make 1 big keyboard via rails.
hardware
- uses 3 XIAO-nRF52840-SMD, one for each keyboard part. and also uses cherry mx switches.
- https://docs.google.com/spreadsheets/d/1L9tUZh8eFOhgZV8CGI-1AN47H67KgHnQl9KeM_NllnM/edit?usp=sharing
Parts
240| Qty | Value | Footprint | References |
|---|---|---|---|
| 108 | D | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1, D10, D11, D12, D13, D14, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109 +92 |
| 108 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | -1, -2, ,1, ;1, .1, .2, '1, *1, //1, /1, +1, =1, G1, X2, X3, X4 +92 |
| 12 | MountingHole | Library:mouse-bite-5mm-slot | H1, H2, H3, H4, H5, H6, H7, H8, H10, H11, H12, H13 |
| 6 | R | Resistor_SMD:R_0805_2012Metric | R2, R3, R4, R5, R6, R14 |
| 3 | Battery | Battery:BatteryHolder_Keystone_1057_1x2032 | BT1, BT2, BT3 |
| 3 | XIAO-nRF52840-SMD | Library:modified-XIAO-nRF52840-SMD | U1, U2, U4 |
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Questions
How big is the Kayboard PCB?
It measures 463 × 211.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kayboard use?
240 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 Kayboard KiCad files?
From the karnxx/kayboard repository on GitHub, at the commit this page was made from: the board is PCB/kayboard.kicad_pcb and its schematic PCB/EACH/left/half.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kayboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask karnxx before reusing the design.