2 layers20.5 × 24.8 mm
2 layers63 × 56.8 mm
Keychain
Mahmoud1205/HeartKeychainA PCB keychain in the shape of a heart that lights up. A project for the Hack Club Stasis program.
- Size
- 63 × 56.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 6
- Pads
- 18
- Tracks, vias
- 35, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Apr 2026
- Updated
- 5 May 2026
Overview
Keychain is an open-source printed circuit board by Mahmoud1205, from the Mahmoud1205/HeartKeychain repository on GitHub. It is a 2-layer board of 63 × 56.8 mm with 8 parts on 6 nets, routed with 35 tracks and 0 vias.
Its parts include 3 resistors, 3 diodes and 1 switch. It belongs with the robots and motor control boards of this library.
README
README.mdHeart Keychain
Project for HC Stasis Program.
I made this keychain as a gift to someone, I wanted to make it as a PCB because I was finally confident in my PCB design and fabrication skills after my progress in the Athan Lamp project.
BOM
| # | Sourced | References | Value | Footprint | Quantity |
|---|---|---|---|---|---|
| 1 | R1, R2, R3 | R_US | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | 3 | |
| 2 | D1, D2, D3 | LED | LED_D3.0mm | 3 | |
| 3 | SW1 | SW_Push | SW_PUSH_6mm_H5mm | 1 | |
| 4 | BT1 | Battery_Cell | BatteryHolder_MYOUNG_BS-07-A1BJ001_CR2032 | 1 |
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | LED | LED_THT:LED_D3.0mm | D1, D2, D3 |
| 3 | R_US | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3 |
| 1 | Battery_Cell | Battery:BatteryHolder_MYOUNG_BS-07-A1BJ001_CR2032 | BT1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
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Questions
How big is the Keychain PCB?
It measures 63 × 56.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keychain use?
8 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 Keychain KiCad files?
From the Mahmoud1205/HeartKeychain repository on GitHub, at the commit this page was made from: the board is Design/Keychain.kicad_pcb and its schematic Design/Keychain.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keychain design in my own project?
Its repository states no licence, so its author keeps all rights: ask Mahmoud1205 before reusing the design.