2 layers140.5 × 30 mm
Type e
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
16 parts3kApache-2.0
2 layers40 × 45 mm
Oc40
kmzbrnoI/oc40Universal Optocoupler Module
- Size
- 40 × 45 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 19
- Pads
- 80
- Tracks, vias
- 62, 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Jul 2026
- Updated
- 2 Jul 2026
Overview
Oc40 is an open-source printed circuit board by kmzbrnoI, from the kmzbrnoI/oc40 repository on GitHub. It is a 2-layer board of 40 × 45 mm with 16 parts on 19 nets, routed with 62 tracks and 4 vias.
Its parts include 5 diodes, 4 resistors, 2 connectors and 1 IC.
README
README.mdUniversal optocoupler module OC-40
Module with 4 optocouplers.
Designed in KiCad 9 by Jan Malina.
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 4 | YELLOW | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D3, D4, D5 |
| 2 | ~ | TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x05_P3.50mm_Horizontal | J1, J2 |
| 1 | 1N5819 | Diode_SMD:D_SOD-123 | D1 |
| 1 | PC847 | Package_DIP:DIP-16_W7.62mm_LongPads | U1 |
Questions
How big is the Oc40 PCB?
It measures 40 × 45 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Oc40 use?
16 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 Oc40 KiCad files?
From the kmzbrnoI/oc40 repository on GitHub, at the commit this page was made from: the board is oc40.kicad_pcb and its schematic oc40.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Oc40 design in my own project?
Its repository states no licence, so its author keeps all rights: ask kmzbrnoI before reusing the design.
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