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[on:]

Does anyone know how to program this shield so that it controls a stepper motor in a 3 state system?

There is little support documentation for this shield and the nano. The examples are not working and I dont know what to try.

http://www.gravitech.us/2mwfecoadfor.html

[Reply #1 on:]

What do you mean buy "in a 3 state system"?

I think you would use the Stepper library (http://arduino.cc/en/Reference/StepperConstructor).

Code:

Stepper myStepper = Stepper(STEPS_PER_REVOLUTION, 4, 5, 6, 7);