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CNC Router using the C76 - UC300ETH Multifunction Board

Full CNC router retrofit using the UC300ETH and C76 multifunction board with UCCNC
June 23, 2026 by
CNC Router using the C76 - UC300ETH Multifunction Board
Heiner Vergara


We showcase a CNC Router powered by the CNC4PC C76 - UC300ETH Multifunction Board. This powerful combination provides motion control, spindle control, inputs and outputs, and seamless integration with UCCNC software, making it an excellent solution for CNC router retrofits and new machine builds.

The C76 simplifies wiring while offering reliable performance, advanced control features, and support for a wide range of CNC applications. Whether you're upgrading an existing router or designing a custom CNC system, this setup demonstrates how the UC300ETH and C76 can work together to create a professional and dependable machine control platform.


Motion Controller and Breakout Board: The C76 is designed specifically for the UC300ETH, and includes PWM control for the spindle, E-Stop monitoring, Charge Pump, Driver Fault and VFD Fault, plus expansion ports for more complex systems. The board's onboard optoisolation and clean terminal layout make wiring straightforward and reliable — a significant advantage during both initial installation and future troubleshooting.


C76 - UC300ETH Multifunction Board


UCCNC Integration: The UC300ETH works hand-in-hand with UCCNC software to deliver smooth, responsive motion control over Ethernet. This eliminates latency issues common with USB or LPT-based controllers, resulting in more accurate cuts and better overall machine performance — particularly important for router applications where spindle speed control and precise I/O management are critical.


MA860H Stepper Drivers



Looking for more customer inspiration? Check out the PlanetCNC MK3 build using CNC4PC C82 and C34 connector boards.



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