2 layers284.7 × 94.2 mm
Lumberjack
peej/lumberjack-keyboard
5x12 ortholinear through-hole component keyboard PCB for standard 60% cases
165 parts403MIT
2 layers292.9 × 143 mm
Keycool Keyboard
Programer6/Custom-75-Keyboard1This is the documentation for designed completely from scratch.
- Size
- 292.9 × 143 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 165
- Nets
- 118
- Pads
- 918
- Tracks, vias
- 2,157, 100
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Jul 2025
- Updated
- 6 Aug 2025
Overview
Keycool Keyboard is an open-source printed circuit board by Programer6, from the Programer6/Custom-75-Keyboard repository on GitHub. It is a 2-layer board of 292.9 × 143 mm with 165 parts on 118 nets, routed with 2,157 tracks and 100 vias.
Its parts include 75 diodes, 6 switches, 2 resistors, 2 ICs and 2 connectors. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
README.mdWireless 75% Keyboard
This is the documentation for designed completely from scratch.
For the firmware, I chose ZMK. Since this is a wireless build using the nice!nano, ZMK's powerful features and Bluetooth support were a perfect fit, even if it meant a steeper learning curve than like KMK which I have used before.
Hardware Features
- 74-key, 70% layout with a function row.
- Wireless Bluetooth connectivity via a
nice!nanomicrocontroller. MCP23017I/O expander to simplify wiring and save controller pins.- 1x Rotary Encoder for volume or scrolling.
- Onboard potentiometer for screen brightness adjustment.
- Powered by a LiPo battery.
Images
| Schematic |
|---|
| PCB Layout |
|---|
| 3D Case Design |
|---|
Parts
165| Qty | Value | Footprint | References |
|---|---|---|---|
| 75 | D | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +59 |
| 64 | MX_SW_HS | PCM_marbastlib-mx:SW_MX_HS_CPG151101S11_1u | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +48 |
| 7 | MX_SW_HS | PCM_marbastlib-mx:SW_MX_HS_CPG151101S11_1.25u | MX67, MX68, MX69, MX71, MX72, MX73, MX74 |
| 2 | 4.7kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | MX_SW_HS | PCM_marbastlib-mx:SW_MX_HS_CPG151101S11_1.5u | MX28, MX41 |
| 2 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_2.25u | S3, S4 |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | Battery | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J1 |
| 1 | Conn_01x04 | Oled screen:SSD1306-0.91-OLED-4pin-128x32 | J3 |
| 1 | LOGO | Oled screen:Highway | G*** |
| 1 | MCP23017_SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U2 |
| 1 | MX_SW_HS | PCM_marbastlib-mx:SW_MX_HS_CPG151101S11_1.75u | MX42 |
| 1 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_2u | S2 |
| 1 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_6.25u | S1 |
| 1 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_2.75u | S5 |
| 1 | R_Potentiometer | nice-nano:Sliding_Pot | RV2 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_CircularMountingHoles | SW75 |
| 1 | nice_nano | nice-nano:nice_nano | U1 |
The 164 most common of 165 parts.
Questions
How big is the Keycool Keyboard PCB?
It measures 292.9 × 143 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keycool Keyboard use?
165 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 Keycool Keyboard KiCad files?
From the Programer6/Custom-75-Keyboard repository on GitHub, at the commit this page was made from: the board is PCB/Keycool Keyboard.kicad_pcb and its schematic PCB/Keycool Keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keycool Keyboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask Programer6 before reusing the design.
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