Could the moderator please reopen this thread?
I incorrectly reported the solution - “Back up and running I just moved the Pi usb cable to the arduino to a new port. I won’t manually move it when its on again!” that was a red herring.
When I manually move, home or calibrate the Y-axis it moves the Z axis over to sit next to the gantry. Then I get the “Could not establish communication with arduino: :noproc” error and loose all access to the arduino.
It’s like it passes a point on the Y-axis and that then shuts off access to the arduino. If I manually move it back to the centre again it works.
If I enable encoders I get a lot of jerky movement which may be related to this post which I will try to follow Questions about encoders and stepper motors.
However I still don’t understand why I loose axis to the arduino? Any ideas?
Below are my device settings.
