I’m not exactly sure what I did, but I tried to send the sled to 0,0 using the gcode command in Ground Control v. 1.02. My left motor now continuously spins as long as it has power. Things I’ve tried that have no effect: The stop button; unplugging the Arduino; removing the firmware from the Arduino; reinstalling the firmware to the Arduino.
Ground Control seems to think the sled is in the home position, but the red sled location shoots off every time I set the current position as home. Trying to use Ground Control to calibrate the chain lengths or test the motors results in the left motor making grindy clicky noises as it tries to spin and follow the command at the same time. The left motor then fails the test. The right motor works fine.
Does anyone know what I can do to fix this?