This is a crosspost from the Motors subforum:
I've been following this guide: http://mykola.bilokonsky.net/2010/12/controlling-a-vex-motor-with-an-arduino-microcontroller/
and have everything set up pretty much identically to what is described there. However, when I connect the 9V batteries nothing moves. The board lights up (including the 13 led that I've added just to make sure everything is ok at that end)
What I've tried so far:
DIfferent motors
Different controllers
If I connect the battery directly to the motor (no board or motor controller in the way) the motor spins (so that's not borken)
What else can I do to zoom in on this problem?
Note: I am using the 2 wire Vex Motor with the 29 controller.