2 layers61 × 85 mm
2 layers100 × 80 mm
Relaymodule
devaexe00/Projects- Size
- 100 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 68
- Pads
- 220
- Tracks, vias
- 473, 48
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Jan 2026
- Updated
- 20 Feb 2026
Overview
Relaymodule is an open-source printed circuit board by devaexe00, from the devaexe00/Projects repository on GitHub. It is a 2-layer board of 100 × 80 mm with 68 parts on 68 nets, routed with 473 tracks and 48 vias.
It is built around the ULN2803A. Its parts include 25 resistors, 17 diodes, 10 connectors, 9 switches and 2 capacitors.
Main components
1Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 |
| 9 | 680E | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9 |
| 9 | LED | LED_SMD:LED_1206_3216Metric | D1, D3, D5, D7, D9, D11, D13, D15, D17 |
| 8 | D | Diode_SMD:D_1206_3216Metric | D2, D4, D6, D8, D10, D12, D14, D16 |
| 8 | G5LE-1 | Relay_THT:Relay_SPDT_Omron-G5LE-1 | K1, K2, K3, K4, K5, K6, K7, K8 |
| 8 | ~ | Connector_JST:JST_NV_B03P-NV_1x03_P5.00mm_Vertical | J1, J2, J3, J4, J5, J6, J7, J8 |
| 4 | ~ | MountingHole:MountingHole_2.5mm_Pad_Via | H1, H2, H3, H4 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 1 | 8 pin input | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J10 |
| 1 | SW_SPST | Button_Switch_SMD:Panasonic_EVQPUJ_EVQPUA | SW1 |
| 1 | ULN2803A | Package_DIP:DIP-18_W7.62mm | U1 |
| 1 | power | Connector_JST:JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J9 |
Questions
How big is the Relaymodule PCB?
It measures 100 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Relaymodule use?
68 parts, built around the ULN2803A. 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 Relaymodule KiCad files?
From the devaexe00/Projects repository on GitHub, at the commit this page was made from: the board is 8channel relay module/relaymodule.kicad_pcb and its schematic 8channel relay module/relaymodule.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Relaymodule design in my own project?
Its repository states no licence, so its author keeps all rights: ask devaexe00 before reusing the design.
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