2 layers131.7 × 109.3 mm
Pskeeb3 cherry hotswap
klesh/pskeeb
Portal Split Keyboard with trackpoint and rotary encoder support
42 parts66Apache-2.0
2 layers126.7 × 105.6 mm
Pskeeb4 gtr lp ks27 hotswap
klesh/pskeeb66Portal Split Keyboard with trackpoint and rotary encoder support
- Size
- 126.7 × 105.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 48
- Pads
- 642
- Tracks, vias
- 273, 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Dec 2022
- Updated
- 29 Dec 2025
Overview
Pskeeb4 gtr lp ks27 hotswap is an open-source printed circuit board by klesh, from the klesh/pskeeb repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 126.7 × 105.6 mm with 46 parts on 48 nets, routed with 273 tracks and 4 vias.
It is built around the 1N4148W. Its parts include 20 switches, 19 diodes, 3 resistors, 3 ICs and 1 capacitor. It belongs with the keyboards and input boards of this library.
Main components
1README
README.mdPortable Split Keyboard
Features
- Tenting design - good for RSI symptoms
- Stackable - portable
- 36 keys columnar layout - less movement when typing
- Trackpoint support
Designs
- pskeeb1 gateron ks27: Mainly designed for Gateron KS27 low profile switches, Blackpill controller, Diodeless
- pskeeb2 express: All Kinds of switches, Blackpill controller, Diodeless, 9.2x9.2cm PCB
- pskeeb3 cherry hotswap: Cherry MX Switch, Raspberry Pi Pico, Diodeless
- pskeeb4 gateron low profile ks27 hotswap: Gateron Low Profile Switch, RP2040-Zero
- pskeeb5 bluetooth kaihl choc v1/v2 hotswap: Kaihl Choc v1/v2 Low Profile Switch, nice!nano v2
Assembly
Trackpoint
- Follow this great guide and this topic to identify the trackpoint pinout
- Solder GH cable to the trackpoint by refering to the socket wiring sequence: RST/DAT/CLK/GND/VCC (top to bottom)
Developement
git clone https://github.com/klesh/pskeeb.git
git submodule update --init --recursiveUse the following options when exporting gerber for JLCPCB manufactoring.
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 1N4148W | kwkb-footprint:D_SOD-123 Reversible | D1, D2, D3, D4, D5, D6, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19 +3 |
| 18 | KEYSW | kwkb-footprint:Gateron KS-27 Hotswap Reversible | K1, K2, K3, K4, K5, K6, K7, K10, K11, K12, K13, K14, K15, K16, K17, K18 +2 |
| 2 | 4.7k | kwkb-footprint:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | R1, R2 |
| 1 | 100k | kwkb-footprint:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | R3 |
| 1 | 2.2uf | kwkb-footprint:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | RotaryEncoder | kwkb-footprint:nobole-rotary-encoder | SW2 |
| 1 | RotaryEncoder_Switch | kwkb-footprint:E8H8 Rotary Encoder Reversible | SW1 |
| 1 | TRRS | kwkb-footprint:TRRS-PJ-320D Reversible | U3 |
| 1 | ps2 | kwkb-footprint:JST_GH_BM05B-GHS-TBT_1x05-1MP_P1.25mm_Vertical | U2 |
| 1 | ~ | kwkb-footprint:RP2024-Zero | U1 |
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Questions
How big is the Pskeeb4 gtr lp ks27 hotswap PCB?
It measures 126.7 × 105.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pskeeb4 gtr lp ks27 hotswap use?
46 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 Pskeeb4 gtr lp ks27 hotswap KiCad files?
From the klesh/pskeeb repository on GitHub, at the commit this page was made from: the board is pskeeb4_gtr_lp_ks27_hotswap/pcb/pskeeb4_gtr_lp_ks27_hotswap/pskeeb4_gtr_lp_ks27_hotswap.kicad_pcb and its schematic pskeeb1_gateron_ks27/pcbs/pskeeb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pskeeb4 gtr lp ks27 hotswap design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).