CNC V3 + potentiometer

[DaveX]

@al64

I saw the values from the potentiometer but any movements from the motors. Any Ideas?

It doesn't look like you are doing anything with the enable pin.

Help Trouble Shooting CNC Shield V3

The CNC shield assigns certain pins to certain functions. The step pins are x=2, y=3, z=4. The dir pins are x=5, y=6, z=7. The CNC shield V3 seems to hold the stepper enable pin HIGH. You must pull the enable low in software to enable the steppers. Pin 8 is connected to the stepper enable pins. In your software, set pin 8 to and OUTPUT and digitalWrite it LOW to enable the steppers. Here is how the CNC shield is connected to the Uno. [cnc shield Uno pins.jpg] [cnc shield Uno pins.jpg]

Maybe also look at alternatives to Stepper.h:

Driver for motor stepper

A schematic with the voltage in feeding into an Arduino's A?? port, and the MOSFETs or a driver chip being driven by the Arduino and into the stepper would be a good way to communicate the issue. There's this example from Stepper.h: This one from MobaTools: ...and this one from AccelStepper: ...but you'd need to change the loop to: void loop() { // Read new position int analog_in = analogRead(ANALOG_IN); stepper.setSpeed(analog_in); stepper.runSpeed(); // stepper.setSpeed(100); …