2 layers216.9 × 86.8 mm
Sweepbling lp pcb
davidphilipbarr/Sweep
Sweep - a small promicro based keyboard inspired by the Ferris.
59 parts2.1k
2 layers75 × 95 mm
Light pcb
afif-ali/light-pcbA PCB circuit that switches a grid of lights from a circle to a cross
- Size
- 75 × 95 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 59
- Nets
- 40
- Pads
- 140
- Tracks, vias
- 306, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 11 Apr 2026
- Updated
- 11 Apr 2026
Overview
Light pcb is an open-source printed circuit board by afif-ali, from the afif-ali/light-pcb repository on GitHub. It is a 2-layer board of 75 × 95 mm with 59 parts on 40 nets, routed with 306 tracks and 0 vias.
Its parts include 22 resistors, 18 transistors, 16 diodes, 2 switches and 1 connector.
README
README.mdLIGHT PCB
A PCB circuit that switches a grid of lights from a circle to a cross. I made this project to learn more about transistors and multivibrators, and to practice making PCBs with kicad.
Circuit
The logic behind this circuit consists in a bistable multivibrator (flip-flop) that switches between lights in a 4x4 grid. Try it here!
Attachments
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | NPN | Package_TO_SOT_THT:TO-92L_Inline_Wide | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q10, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18 +2 |
| 16 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22 |
| 16 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 4 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R4, R5, R6 |
| 2 | 500 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
Questions
How big is the Light pcb PCB?
It measures 75 × 95 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Light pcb use?
59 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 Light pcb KiCad files?
From the afif-ali/light-pcb repository on GitHub, at the commit this page was made from: the board is src/kicad/light-pcb.kicad_pcb and its schematic src/kicad/light-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Light pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask afif-ali before reusing the design.
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