2 layers
2 layers65.5 × 53.5 mm
Ledcomms
umeding/BUSCBoston University Summer Challenge
- Size
- 65.5 × 53.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 40
- Pads
- 68
- Tracks, vias
- 112, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 May 2026
- Updated
- 29 Oct 2026
Overview
Ledcomms is an open-source printed circuit board by umeding, from the umeding/BUSC repository on GitHub, published under the Unlicense licence. It is a 2-layer board of 65.5 × 53.5 mm with 16 parts on 40 nets, routed with 112 tracks and 0 vias.
It is built around the LM393. Its parts include 7 resistors, 4 connectors, 3 diodes and 2 ICs.
Main components
1README
README.mdBUSC
Boston University Summer Challenge
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 1.5k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R5 |
| 1 | 1.8M | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R4 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2 |
| 1 | 2.7M | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1 |
| 1 | 200 | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R7 |
| 1 | 62 | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R6 |
| 1 | Analog | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J4 |
| 1 | HB | LED_THT:LED_D5.0mm | D2 |
| 1 | LED | LED_THT:LED_D5.0mm | D3 |
| 1 | LM393 | Package_DIP:DIP-8_W7.62mm_Socket | U2 |
| 1 | LM741 | Package_DIP:DIP-8_W7.62mm_Socket | U1 |
| 1 | PD | LED_THT:LED_D5.0mm | D1 |
| 1 | Power | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
Questions
How big is the Ledcomms PCB?
It measures 65.5 × 53.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ledcomms use?
16 parts, built around the LM393. 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 Ledcomms KiCad files?
From the umeding/BUSC repository on GitHub, at the commit this page was made from: the board is ledcomms/ledcomms.kicad_pcb and its schematic dimmer/dimmer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ledcomms design in my own project?
Its repository publishes it under the Unlicense licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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