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PlanetCNC running CNC4pc C82 and C34 connector boards.

A professional CNC cabinet build using PlanetCNC MK3 with CNC4PC auxiliary boards
June 30, 2026 by
PlanetCNC running CNC4pc C82 and C34 connector boards.
Heiner Vergara


This project showcases the assembly and configuration of a CNC control system based on the Planet-CNC MK3 controller. By incorporating CNC4PC auxiliary boards, the installation benefits from simplified wiring, improved signal management, and a more robust overall design.

Throughout the video, you'll see how the different components work together to create a professional CNC control solution with enhanced connectivity, easier troubleshooting, and improved electrical isolation. The project serves as a practical reference for CNC builders, retrofit enthusiasts, and machine integrators looking to optimize controller performance while maintaining a clean and organized electrical cabinet.

The C82 Dual Port Multifunction Board provides optically isolated inputs and outputs, charge pump support, and dual-port connectivity — making it ideal for complex CNC systems that demand reliable signal handling. Paired with the C34 connector board, the result is a cleaner wiring harness, reduced interference, and a system that's far easier to maintain and troubleshoot in the field. Together, these boards turn the PlanetCNC MK3 into a production-ready control platform.



Looking for more customer inspiration? Check out the CNC Router build using the C76 UC300ETH Multifunction Board.



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