Arduino - StepperExample

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## Stepper Library Example Sketch

#### Description

A stepper motor follows the turns of a potentiometer (or other sensor) on analog input 0. The unipolar or bipolar stepper is controlled with pins 8, 9, 10, and 11, using one of the circuits on the linked pages.

#### Code

    #include <Stepper.h>

    // change this to the number of steps on your motor
    #define STEPS 100

    // create an instance of the stepper class, specifying
    // the number of steps of the motor and the pins it's
    // attached to
    Stepper stepper(STEPS, 8, 9, 10, 11);

    // the previous reading from the analog input
    int previous = 0;

    void setup()
    {
      // set the speed of the motor to 30 RPMs
      stepper.setSpeed(30);
    }

    void loop()
    {
      // get the sensor value
      int val = analogRead(0);

      // move a number of steps equal to the change in the
      // sensor reading
      stepper.step(val - previous);

      // remember the previous value of the sensor
      previous = val;
    }

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