I just received several of these drivers and don't know which is the problem; hardware or the sketch. Here is a photo of the setuphttp://www.flickr.com/photos/92579016@N08/8627332585/. Left side powered by 12v wall wart, right by Arduino 5v. There is no power to the motor output pins, no heat whatsoever on the driver. I have tried several sketches, this without the enable pin, and one with enable to an Arduino pin. Still no voltage to the motor. Must be something dumb but after wiring and editing the sketch umpteen times, I am completely lost. The wiring is same as Pololu drawing herehttp://www.pololu.com/catalog/product/2133.
I just received several of these drivers and don't know which is the problem; hardware or the sketch. Here is a photo of the setuphttp://www.flickr.com/photos/92579016@N08/8627332585/. Left side powered by 12v wall wart, right by Arduino 5v. There is no power to the motor output pins, no heat whatsoever on the driver. I have tried several sketches, this without the enable pin, and one with enable to an Arduino pin. Still no voltage to the motor. Must be something dumb but after wiring and editing the sketch umpteen times, I am completely lost. The wiring is same as Pololu http://www.pololu.com/catalog/product/2133
The sketch does not include an "enable" pin. Several others I've seen include it. In any case, of the four sketches designed for this driver, not one worked. No power to the motor output pins on the board. The wiring seems to be straight forward. Any ideas?
After rewiring the board a dozen times, I want to believe the sketches intended for the driver somehow aren't compatible with my setup. I'm trying to upload the simplest possible test sketch. Will this work?
Perhaps if you posted a picture of how you really have the board connected to the Arduino, motors, and batteries/power supply, we could help. Hopefully, you used several feet of one color wire running across each other. Not really, I don't.
Where does the white connector go? Where is the power supply to supply power to the motor? Surely you are not expecting the Arduino to power the motor.