2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers31.8 × 48.3 mm
Stop light
Ployafa12/Stop-light-pcb-designMy first ever pcb design project of a stop light.
- Size
- 31.8 × 48.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 7
- Pads
- 20
- Tracks, vias
- 29, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Jan 2026
- Updated
- 31 Jan 2026
Overview
Stop light is an open-source printed circuit board by Ployafa12, from the Ployafa12/Stop-light-pcb-design repository on GitHub. It is a 2-layer board of 31.8 × 48.3 mm with 11 parts on 7 nets, routed with 29 tracks and 0 vias.
Its parts include 3 resistors and 1 connector.
README
README.mdStop-light-pcb-design
Simple channel LED driver board with resistors for each LED. The board includes a 4 pin connector for power input and 3 parallel LED circuits with mounting holes. Features: 4 pin connector 3 independent LED channels Resistors 4 mounting holes
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_2.5mm_Pad | H1, H2, H3, H4 |
| 3 | LED | LED_THT:LED_D3.0mm | GREEN, RED, YELLOW |
| 3 | R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Vertical | R1, R2, R3 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J1 |
Questions
How big is the Stop light PCB?
It measures 31.8 × 48.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Stop light use?
11 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 Stop light KiCad files?
From the Ployafa12/Stop-light-pcb-design repository on GitHub, at the commit this page was made from: the board is stop light.kicad_pcb and its schematic stop light.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stop light design in my own project?
Its repository states no licence, so its author keeps all rights: ask Ployafa12 before reusing the design.
Similar boards
- 2 layers103 × 30.5 mm
- 2 layers26 × 30 mm
Expansion Card
FrameworkComputer/ExpansionCards
Reference designs and documentation to create Expansion Cards for the Framework Laptop
11 parts1.1kCC-BY-4.0 - 2 layers53.9 × 23.2 mm
Buffer
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
11 parts1kGPL-3.0 - 2 layers10 × 20 mm
2 connector Sensor Board
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
11 parts915 - 2 layers
- 2 layers47 × 33 mm
Sevensegment led display module
tardate/LittleArduinoProjects
a collection of "Little Electronic & Arduino Projects", most involving electronics or an Arduino in one way or another!
11 parts803MIT - 2 layers42.5 × 36.8 mm
Devboard
basilfx/TRADFRI-Hacking
Hacking IKEA TRÅDFRI products, such as light bulbs, window blinds and other accessories.
11 parts743CC-BY-4.0