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A 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).
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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.
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 | — |
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.
This project is licensed under the MIT License.