4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers261 × 101.9 mm
Keyboard PCB
adlwar137/KeyboardA from-the-ground-up keyboard
- Size
- 261 × 101.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 147
- Nets
- 135
- Pads
- 616
- Tracks, vias
- 1,023, 143
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Sep 2026
- Updated
- 29 Oct 2026
Overview
Keyboard PCB is an open-source printed circuit board by adlwar137, from the adlwar137/Keyboard repository on GitHub. It is a 2-layer board of 261 × 101.9 mm with 147 parts on 135 nets, routed with 1,023 tracks and 143 vias.
It is built around the AMS1117-3.3 and SP0503BAHTG. Its parts include 47 diodes, 44 switches, 22 capacitors, 10 resistors and 7 connectors. It belongs with the keyboards and input boards and the STM32 boards of this library.
Main components
2
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SP0503BAHTG
SOT-143-55℃~+125℃ 10A@8/20us 14V 150W@8/20us 30pF、60pF 5.5V 6V 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdCustom Keyboard
🚧 This is a work in progress 🚧
A custom mechanical keyboard deisgned and built from the ground up
Features
- Custom PCB designed for the keyboard
- Custom case designed in CAD
- Custom firmware
Design
PCB
Designed from scratch in KICAD
Case
Custom case designed in FreeCAD and 3D printed
Firmware
Custom firmware the will be written in rust
Folders
firmware/- Keyboard firmwarepcb/- PCB design filesartifacts/- STLs, DXFs, and other exported filesscreenshots/- Screenshots of various parts during development
Parts
147| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | D | Diode_SMD:D_0805_2012Metric | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +26 |
| 42 | SW_Push | MyLibrary:MX100H | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +26 |
| 14 | 100nF | Capacitor_SMD:C_0402_1005Metric | C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16 |
| 14 | MountingHole | MountingHole:MountingHole_3mm | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14 |
| 4 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C19, C20, C21, C22 |
| 4 | 100R | Resistor_SMD:R_0402_1005Metric | R3, R4, R5, R6 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric | R7, R8, R9, R10 |
| 4 | LED | LED_SMD:LED_0805_2012Metric | D44, D45, D46, D47 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C17, C18 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | BOOT0 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2, J4 |
| 2 | BOOT1 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3, J5 |
| 2 | Debug UART | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6, J7 |
| 2 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2, U3 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | SW43, SW44 |
| 1 | 10uF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D43 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4085 | J1 |
Questions
How big is the Keyboard PCB PCB?
It measures 261 × 101.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard PCB use?
147 parts, built around the AMS1117-3.3 and SP0503BAHTG. 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 Keyboard PCB KiCad files?
From the adlwar137/Keyboard repository on GitHub, at the commit this page was made from: the board is PCB/Keyboard-PCB.kicad_pcb and its schematic PCB/Keyboard-PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask adlwar137 before reusing the design.
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