(Yesterday, I posted this on the Sparkfun forum
but have not had much come from that. Since I TIA for any guidance you can give.)
I am unable to control my stepper motor and have tried every possible wiring combination to the Ardumoto
I have tried a number of sketch examples including the sparkfun example sketch
, those included in the Arduino Stepper library and the Arduino tutorial
, and the stepper motor sketch from the Arduino Cookbook. In every case I have confirmed that I am setting 200 steps if the sketch isn't already written for that number.
When I run a sketch, if wired certain ways, I get no apparent activity but can feel tension on the rod. I suspect this means that the motor is powered and using current just to stay in place. If I wire other ways, I get a very choppy movement, almost as though the rod is going back and forth very quickly. I thought this might mean too little current or a phase issue but the guy at my electronics store suggested that my 12V 3A power supply is sufficient, and changing the wiring configuration doesn't provide any other result.
Does anyone have any insight into this problem?
Can someone confirm which colour wire should be connected to A(1, 2) and B(3, 4) on the Ardumoto?
Arduino Uno w/ external power 9V 500mA
Ardumoto w/ external power 12V 3APololu 1208
bipolar stepper motor (10V, 500mA per coil, 200steps)