2 layers50 × 35 mm
2 layers
DCC CBUS
MERG-DEV/DCC_CBUSCBUS module to generate CBUS event messages from DCC accessory packets.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 24
- Pads
- 72
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 7 (file 20221018)
- Created
- 15 Nov 2025
- Updated
- 28 Oct 2026
Overview
DCC CBUS is an open-source printed circuit board by MERG-DEV, from the MERG-DEV/DCC_CBUS repository on GitHub. It is a 2-layer board with 17 parts on 24 nets.
Its parts include 11 resistors, 3 ICs and 3 diodes. It belongs with the PIC boards of this library.
README
README.mddcccbus
MERG CBUS for model railway control - PIC18 Assembler CBUS for DCC_CBUS module.
Requires inclusion as a Git submodule of cbuslib_asm (as cbuslib). Builds as an MPLABX project.
Copyright and Licensing
Shield: 
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R10, R11 |
| 2 | 1K8 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8, R9 |
| 1 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6 |
| 1 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7 |
| 1 | 1K5 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 6N137 | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | Green | LED_THT:LED_D3.0mm | D3 |
| 1 | MCP2551-I-P | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | PIC18F2480-ISP | Package_DIP:DIP-28_W7.62mm | U3 |
| 1 | Yellow | LED_THT:LED_D3.0mm | D2 |
Questions
What parts does the DCC CBUS use?
17 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 DCC CBUS KiCad files?
From the MERG-DEV/DCC_CBUS repository on GitHub, at the commit this page was made from: the board is pcb/DCCCBUS.kicad_pcb and its schematic pcb/DCCCBUS.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DCC CBUS design in my own project?
Its repository states no licence, so its author keeps all rights: ask MERG-DEV before reusing the design.
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