2 layers100.3 × 38.1 mm
Relay shield
carlos-jenkins/relay-shield
Relay and current sensor shield for Spark Core
25 parts10GPL-2.0
2 layers83 × 55 mm
Maerklin System Control
mars3142/system-control- Size
- 83 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 19
- Pads
- 119
- Tracks, vias
- 78, 1
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Aug 2025
- Updated
- 28 Oct 2026
Overview
Maerklin System Control is an open-source printed circuit board by mars3142, from the mars3142/system-control repository on GitHub, published under the AGPL-3.0 licence. It is a 2-layer board of 83 × 55 mm with 39 parts on 19 nets, routed with 78 tracks and 1 via.
It is built around the WS2812B, MH3 and MH4. Its parts include 6 switches, 3 capacitors, 3 resistors, 3 diodes and 2 connectors. It belongs with the ESP32 and RISC-V boards of this library.
Main components
3README
README.mdSystem Control
See the wiki for more information.
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3 |
| 3 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3 |
| 2 | 4,7 kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
| 1 | 220Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | BACK | easyeda2kicad:KEY-TH_4P-L6.0-W6.0-P3.90-LS7.8 | SW6 |
| 1 | DOWN | easyeda2kicad:KEY-TH_4P-L6.0-W6.0-P3.90-LS7.8 | SW3 |
| 1 | Female Header | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Horizontal | J1 |
| 1 | G*** | kibuzzard-678980F4 | kibuzzard-678980F4 |
| 1 | G*** | kibuzzard-6859B258 | kibuzzard-6859B258 |
| 1 | G*** | kibuzzard-67898217 | kibuzzard-67898217 |
| 1 | G*** | kibuzzard-67898208 | kibuzzard-67898208 |
| 1 | G*** | kibuzzard-678981DB | kibuzzard-678981DB |
| 1 | G*** | kibuzzard-68D2E6F2 | kibuzzard-68D2E6F2 |
| 1 | G*** | kibuzzard-67898221 | kibuzzard-67898221 |
| 1 | G*** | kibuzzard-67898229 | kibuzzard-67898229 |
| 1 | G*** | kibuzzard-678980E8 | kibuzzard-678980E8 |
| 1 | G*** | kibuzzard-68D2E6D4 | kibuzzard-68D2E6D4 |
| 1 | G*** | kibuzzard-68D2E6EB | kibuzzard-68D2E6EB |
| 1 | G*** | kibuzzard-67898102 | kibuzzard-67898102 |
| 1 | G*** | kibuzzard-68D2E6E4 | kibuzzard-68D2E6E4 |
| 1 | G*** | kibuzzard-678981FB | kibuzzard-678981FB |
| 1 | G*** | kibuzzard-678A1323 | kibuzzard-678A1323 |
| 1 | LEFT | easyeda2kicad:KEY-TH_4P-L6.0-W6.0-P3.90-LS7.8 | SW4 |
| 1 | LOGO | sponsors:PCBWay (5mm) | G*** |
| 1 | MH1 | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1 |
| 1 | MH2 | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H2 |
| 1 | MH3 | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H3 |
| 1 | MH4 | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H4 |
| 1 | Output | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-3_1x03_P5.00mm_Horizontal | J3 |
| 1 | RIGHT | easyeda2kicad:KEY-TH_4P-L6.0-W6.0-P3.90-LS7.8 | SW2 |
| 1 | SELECT | easyeda2kicad:KEY-TH_4P-L6.0-W6.0-P3.90-LS7.8 | SW5 |
| 1 | UP | easyeda2kicad:KEY-TH_4P-L6.0-W6.0-P3.90-LS7.8 | SW1 |
| 1 | XIAO-ESP32-C6-DIP | Seeed_Studio_XIAO_Series:XIAO-ESP32-C6-DIP | U1 |
The 38 most common of 39 parts.
Questions
How big is the Maerklin System Control PCB?
It measures 83 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Maerklin System Control use?
39 parts, built around the WS2812B, MH3 and MH4. 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 Maerklin System Control KiCad files?
From the mars3142/system-control repository on GitHub, at the commit this page was made from: the board is hardware/Maerklin System Control.kicad_pcb and its schematic hardware/Maerklin System Control.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Maerklin System Control design in my own project?
Its repository publishes it under the AGPL-3.0 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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