2 layers327.9 × 139 mm
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
147 parts446
2 layers70.6 × 62.7 mm
Heart Led
ryanjetplane1/Heart-LedA interactive LED display using a 555 timer circuit with speed controlled by a potentiometer
- Size
- 70.6 × 62.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 18
- Pads
- 57
- Tracks, vias
- 127, 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Apr 2026
- Updated
- 19 Oct 2026
Overview
Heart Led is an open-source printed circuit board by ryanjetplane1, from the ryanjetplane1/Heart-Led repository on GitHub. It is a 2-layer board of 70.6 × 62.7 mm with 18 parts on 18 nets, routed with 127 tracks and 1 via.
It is built around the NE555P. Its parts include 10 diodes, 2 capacitors, 2 resistors, 2 ICs and 1 connector.
Main components
1README
README.mdHeart-Led
Heart Led is an interactive LED display using a 555 timer circuit with speed controlled by a potentiometer
This project was made for hackclub as a starter design for learning pcbs. The project took about 5 hours and was very fun to learn and is great to use instead of messy wiring. Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 1 | 0.01uF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C2 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 4017 | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 50k | Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical | RV2 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
Questions
How big is the Heart Led PCB?
It measures 70.6 × 62.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Heart Led use?
18 parts, built around the NE555P. 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 Heart Led KiCad files?
From the ryanjetplane1/Heart-Led repository on GitHub, at the commit this page was made from: the board is Pcb/heartled.kicad_pcb and its schematic Pcb/heartled.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Heart Led design in my own project?
Its repository states no licence, so its author keeps all rights: ask ryanjetplane1 before reusing the design.
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