arduino_simple_stepper_motor_example.ino

int Distance = 0; // Record the number of steps we've taken

// the setup function runs once when you press reset or power the board
void setup() {

  // Enable control signal pin
  pinMode(11, OUTPUT);
  
  // Dir pin
  pinMode(12, OUTPUT);

  // Step pin
  pinMode(13, OUTPUT);

  digitalWrite(11, LOW);
  digitalWrite(12, HIGH);
  digitalWrite(13, LOW);
}

// the loop function runs over and over again forever
void loop() {
  // Step signal On
  digitalWrite(13, HIGH);
  
  // Delay
  delay(1);

  // Step signal off
  digitalWrite(13, LOW);

  // Delay
  delay(1);

  // Increase distance
  Distance = Distance + 1;

  // Check to see if we are at the end of our move
  if (Distance == 3200) {

    // We are! Reverse direction (invert DIR signal)
    if (digitalRead(12) == LOW) {
      digitalWrite(12, HIGH);
    }
    else {
      digitalWrite(12, LOW);
    }

    // Reset our distance back to zero since we're // starting a new move
    Distance = 0;
    
    // Now pause for half a second
    delay(500);
  }
}