4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers92 × 73 mm
Thorium34
lachesis-dev/zmk-config- Size
- 92 × 73 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 63
- Nets
- 80
- Pads
- 309
- Tracks, vias
- 684, 136
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Aug 2026
- Updated
- 5 Nov 2026
Overview
Thorium34 is an open-source printed circuit board by lachesis-dev, from the lachesis-dev/zmk-config repository on GitHub. It is a 2-layer board of 92 × 73 mm with 63 parts on 80 nets, routed with 684 tracks and 136 vias.
It is built around the 1N4148W. Its parts include 19 switches, 2 ICs and 1 connector. It belongs with the nRF52 and nRF5x boards of this library.
Main components
1Parts
63| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | 1N4148W | Diode_SMD:D_SOD-123 | DA1, DA2, DA3, DA4, DA5, DA6, DA7, DA8, DA10, DA11, DA12, DA13, DA14, DA15, DA16, DA17 +18 |
| 17 | ChocV1,2 | MyLibrary:ChocV1_V2_Hotswap_16mm_ReversibleSMD | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17 +1 |
| 5 | MountingHole_2.2mm_M2 | MountingHole:MountingHole_2.2mm_M2 | REB5, REFB1, REFB2, REFB3, REFB4 |
| 2 | , | ||
| 2 | SW_SPDT | MyLibrary:SW_SPDT_Shouhan_MSK12C02NotHole | SW18, SW19 |
| 2 | XIAO-nRF52840-SMD | MyLibrary:XIAO-nRF52840-SMD_SS | U2_R1, U3 |
| 1 | Conn_01x04_Pin | Connector:Battery_SMD_2Pin_LiPoDirect | J1 |
Questions
How big is the Thorium34 PCB?
It measures 92 × 73 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Thorium34 use?
63 parts, built around the 1N4148W. 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 Thorium34 KiCad files?
From the lachesis-dev/zmk-config repository on GitHub, at the commit this page was made from: the board is Cradle/KiCAD/Thorium改/Thorium34.kicad_pcb and its schematic Cradle/KiCAD/Thorium改/Thorium34.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Thorium34 design in my own project?
Its repository states no licence, so its author keeps all rights: ask lachesis-dev before reusing the design.
Similar boards
- 2 layers208.8 × 396.9 mm
Ferris
pierrechevalier83/ferris
A low profile split keyboard designed to satisfy one single use case elegantly
145 parts1.3k - 2 layers285.5 × 95 mm
- 4 layers95.6 × 73.6 mm
- 2 layers141.5 × 83 mm
Rolio
MickiusMousius/Rolio46Keyboard
A split wireless keyboard based on the Corne and Sofle
110 parts236MIT - 6 layers160 × 100 mm
- 2 layers99.1 × 90.7 mm
Bgkeeb
sadekbaroudi/bgkeeb
This is a reversible 100mm x 100mm pcb with support for mx or choc switches (no hotswap), per key led, rotary encoders, and exposes the SDA/SCL/GND/VCC lines in the form of the pimoroni trackball pins (meaning you can…
108 parts108 - 2 layers229.8 × 102.6 mm
