If all the motors are doing the same thing and they vibrate instead of move, then the wiring of the motor cables may be wrong for the electronics. I had this problem with a new set of cables from Robotdigg a few weeks ago. The fix was to swap over the outer 2 wires where they go into the connector that plugs into the electronics. You need a very small screwdriver or fine tweezers to lift the plastic tabs on the connector shell so that you can pull the pins out.
↧