This repo contains a HW design files for OrangePi CNC shield for making the OrangePi a LinuxCNC machine.

The allwincnc project can be used to do the realtime heavy lifting (stepper control) while the OrangePi does the slower tasks (kinematics calculations,...).

More details about making this all work with a real CNC machine can be found on my blog

• 5 stepper controllers (direction and step signals) supported
• 3 encoders inputs
• Spindle control - both PWM and 0-10 V outputs
• 6 limit switches (endstops, home position,...)
• Probe sensor input
• Stop button input
• 2 power outputs (cooling, ESTOP,...), up to 24 V
• Incidator leds on inputs and outputs for easier debugging
• Up to 15 V inputs protection
• Selectable 3.3/5 V power for limit switches
• OrangePi can be powered directly from the board (dedicated 5 V input) and vice versa.