2 layers111 × 89 mm Split keyboard 1, the printed circuit board in 3D

Split keyboard 1

Split keyboard project akin to this one, and this one.

Size: 111 × 89 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 64
Nets: 58
Pads: 315
Tracks, vias: 269, 70
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 29 Aug 2025
Updated: 16 Sep 2025

Overview

Split keyboard 1 is an open-source printed circuit board by WilliamMBaker, from the WilliamMBaker/split_keyboard_1 repository on GitHub. It is a 2-layer board of 111 × 89 mm with 64 parts on 58 nets, routed with 269 tracks and 70 vias.

It is built around the 1N4148W and B2B-PH-SM4-TB. Its parts include 32 switches, 30 diodes, 1 IC and 1 connector. It belongs with the keyboards and input boards of this library.

Main components

README

README.md

split_keyboard_1

Split keyboard project akin to this one, and this one.

Requirements

Split, preferably reversible PCBs or at least both sides be manufactured together and snapped/cut appart.
Large battery, months long battery life.
Wireless, bluetooth connection to target device.
Plug and play, HID complient(?).
Low profile, switches and keycaps.
Ortholinear and no saggering.

Resources

Category and platform

Keyboards and input

Project files

Show this board on your page

https://pcbkit.io/boards/WilliamMBaker/split_keyboard_1

The board's own page, for a message or a post.

Source

Repository: WilliamMBaker/split_keyboard_1
Board file: split_keyboard_1/split_keyboard_1.kicad_pcb
Commit: 5d416ec
Licence: Not stated

Parts

Qty	Value	Footprint	References
30	1N4148W	Diode_SMD:D_SOD-123	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +14
30	SW_Push_45deg	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1_1.00u	SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +14
1	B2B-PH-SM4-TB	Connector_JST:JST_GH_SM02B-GHS-TB_1x02-1MP_P1.25mm_Horizontal	J1
1	SW_Push	footprints:EVQPU_BTN	SW32
1	~	footprints:SSSS811101_SW_SPDT	SW31
1	~	footprints:nice!nanoV2	U1

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Questions

How big is the Split keyboard 1 PCB?

It measures 111 × 89 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Split keyboard 1 use?

64 parts, built around the 1N4148W and B2B-PH-SM4-TB. 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 Split keyboard 1 KiCad files?

From the WilliamMBaker/split_keyboard_1 repository on GitHub, at the commit this page was made from: the board is split_keyboard_1/split_keyboard_1.kicad_pcb and its schematic split_keyboard_1/split_keyboard_1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Split keyboard 1 design in my own project?

Its repository states no licence, so its author keeps all rights: ask WilliamMBaker before reusing the design.