const int drPin=1;
const int stpPin=2;
const int stepsPerRevolution = 200;

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

void loop() {
  // put your main code here, to run repeatedly:
  //putar 90 derajat 2 kali kanan
  for(int i = 0;i<2;i++){
    digitalWrite(drPin,HIGH);
    for(int y=0;y<90;y++){
      digitalWrite(stpPin, HIGH);
      delayMicroseconds(2000);
      digitalWrite(stpPin, LOW);
      delayMicroseconds(2000);
    }
    delay(1000);
  }

  //putaran 180 derajat 2 kali kiri
  for(int i = 0;i<2;i++){
    digitalWrite(drPin,LOW);
    for(int y=0;y<180;y++){
      digitalWrite(stpPin, HIGH);
      delayMicroseconds(2000);
      digitalWrite(stpPin, LOW);
      delayMicroseconds(2000);
    }
    delay(1000);
  }
}