2 layers114 × 61.4 mm
2 layers52 × 42 mm
Loco3
jgraichen/loco3LocoNet distribution box with power and activity indicator
- Size
- 52 × 42 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 13
- Pads
- 61
- Tracks, vias
- 73, 7
- Pours
- 56
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Apr 2024
- Updated
- 5 Apr 2025
Overview
Loco3 is an open-source printed circuit board by jgraichen, from the jgraichen/loco3 repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 52 × 42 mm with 19 parts on 13 nets, routed with 73 tracks and 7 vias.
It is built around the NE555D and BAT54J. Its parts include 4 resistors, 4 diodes, 3 capacitors, 3 connectors and 1 IC.
Main components
2README
README.mdloco3
LocoNet distribution box with power and activity indicator
[blocked]
[blocked]
License
[blocked][blocked]CC-BY-SA 4.0
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 6P6C | Snapeda:A-2004-1-4-LP-N-R_ASSMANN_A-2004-1-4-LP-N-R | J1, J3 |
| 2 | BAT54J | Diode_SMD:D_SOD-323_HandSoldering | D1, D2 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 10µF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 2,2k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 27k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 6P6C | Snapeda:A-2014-1-4-N-T-R_ASSMANN_A-2014-1-4-N-T-R | J2 |
| 1 | ACT | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | NE555D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | PWR | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | SW_DIP_x02 | Button_Switch_THT:SW_DIP_SPSTx02_Slide_9.78x7.26mm_W7.62mm_P2.54mm | SW1 |
The 16 most common of 19 parts.
Questions
How big is the Loco3 PCB?
It measures 52 × 42 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Loco3 use?
19 parts, built around the NE555D and BAT54J. 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 Loco3 KiCad files?
From the jgraichen/loco3 repository on GitHub, at the commit this page was made from: the board is loco3.kicad_pcb and its schematic loco3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Loco3 design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 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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