Motors spinning while robot is disabled

[mastachyra]

Could it be as simple as crossed polarity on the power to/from the motor controller? I recall this happening before.

[Tom Line]

Originally Posted by mastachyra

Could it be as simple as crossed polarity on the power to/from the motor controller? I recall this happening before.

Yes. We've found that even when disabled, if you short a motor controller output together or to ground on the frame it can cause spontaneous motion on any of the other connected speed controllers. That was a rather scary 'find' as our head mentor was walking by a can whip when it came down in front of him at full speed.