// 22.11.4562 - Muhammad Guido Augusta
const int dirPin = 3;
const int stepPin = 2;
const int stepsPerRevolution = 200;

void setup() {
  // put your setup code here, to run once:
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i < 2; i++) {
  digitalWrite(dirPin, HIGH);
    for (int x = 0; x < stepsPerRevolution / 4; x++) { 
      digitalWrite(stepPin, HIGH); 
      delayMicroseconds(2000); 
      digitalWrite(stepPin, LOW); 
      delayMicroseconds(2000);
    }
    delay(1000);  
  }

  for (int i = 0; i < 2; i++) {
    digitalWrite(dirPin, LOW);
    for (int x = 0; x < stepsPerRevolution / 2; x++) { 
      digitalWrite(stepPin, HIGH); 
      delayMicroseconds(2000); 
      digitalWrite(stepPin, LOW); 
      delayMicroseconds(2000);
    } 
    delay(1000);
  }
}