Rover 5 motors turn in opposite directions
October 27, 2012
Finally managed to complete the wiring on my Rover 5. I removed the tracks and elevated the chassis and uploaded a simple sketch to run each motor at 1/3 speed for 5 seconds each. Using a Spider and the Dagu 4ch motor controller. Powered by a 2s 3000mAh Lipo.
Motors 3 and 4 turn in the opposite direction to 1 and 2.
I rechecked the wiring and the sketch and all seems in order. I read that a previous builder found that the motor controller was incorrectly wired from the factory but this doesn't seem to be the case with mine.
I pulled the "dir" pin on Motor 4 to 0V and the "dir" pin on Motor 1 to 5V (to remove the sketch from the equation) and they both then turned in the same direction. So the "dir" pins are apparently working (but 3 and 4 seem to be back to front). I confirmed all voltages with a DMM and a Digital 'scope.
I haven't seriously started to debug this yet but I'd be grateful for any suggestions. Am I missing something obvious?