2 layers98 × 27 mm
2 layers64.2 × 24.6 mm
KiCad LED Key
Ziegen-EE/KiCad-LED-KeyA compact, through-hole PCB designed in KiCad featuring a single momentary switch, one LED, and one current-limiting resistor. It provides simple power and signal pads and serves as a straightforward solution for creating an illuminated Key(Cad).
- Size
- 64.2 × 24.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 5
- Nets
- 4
- Pads
- 10
- Tracks, vias
- 12, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 Nov 2025
- Updated
- 26 Nov 2025
Overview
KiCad LED Key is an open-source printed circuit board by Ziegen-EE, from the Ziegen-EE/KiCad-LED-Key repository on GitHub, published under the MIT licence. It is a 2-layer board of 64.2 × 24.6 mm with 5 parts on 4 nets, routed with 12 tracks and 0 vias.
Its parts include 1 resistor, 1 diode and 1 switch.
README
README.mdLED Key PCB (KiCad)
A simple LED Key PCB designed in KiCad. The board uses a through-hole LED, a single through-hole current-limiting resistor, and a momentary switch footprint. Connection pads are clearly labeled, and the overall layout is clean and easy to assemble.
Features
- Through-hole LED and resistor
- Momentary switch footprint
- Clean, minimal KiCad layout
- Straightforward power and signal pads
Bill of Materials (BOM)
A full, BOM is available here:
https://docs.google.com/spreadsheets/d/1AzciDIwuh-wBaT5EASdSV9_-SiR-sQ5o8lEvPlcvOwY/edit?usp=sharing
| # | Reference | DNP | Part Name | Manufacturer | MPN | Qty | Footprint | Notes |
|---|---|---|---|---|---|---|---|---|
| 1 | SW1A | No | Tactile Button | Omron Electronics Inc-EMC Div | B3F-1000 | 1 | THT | — |
| 2 | BT1 | No | Battery Holder | Keystone Electronics | 1058 | 1 | SMD | Coin Cell 2032 |
| 3 | R1 | No | Resistor | Vishay Beyschlag/Draloric/BC Components | MBA0204VE1000BC100 | 1 | THT | — |
| 4 | D1 | No | LED | Kingbright | WP56BID | 1 | THT | Red |
| 5 | N/A | N/A | PCB | PCBWay | N/A | 5 | N/A | — |
Files Included
- Schematic
- PCB layout
- Gerber files
How It Works
The LED is powered through a single current-limiting resistor, and the momentary switch provides the primary input. External power, ground, and signal lines connect through the labeled pads.
License
This project is licensed under the MIT License.
Parts
5| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_1058_1x2032 | BT1 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
| 1 | R_US | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | SW_DPST_x2 | Button_Switch_THT:SW_TH_Tactile_Omron_B3F-100x | SW1 |
The 4 most common of 5 parts.
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Questions
How big is the KiCad LED Key PCB?
It measures 64.2 × 24.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the KiCad LED Key use?
5 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 KiCad LED Key KiCad files?
From the Ziegen-EE/KiCad-LED-Key repository on GitHub, at the commit this page was made from: the board is LED Key/KiCad/PCB/KiCad-LED-Key.kicad_pcb and its schematic LED Key/KiCad/Schematic/KiCad-LED-Key.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the KiCad LED Key design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).