int servo = 0;


void setup() {
  pinMode(servo, OUTPUT);
  pinMode(led, OUTPUT);
  
}

void loop() {
  // to turn anti-clockwise
  for (int i = 0; i < 10; ++i) {
    digitalWrite(servo, HIGH);
    delayMicroseconds(800);
    digitalWrite(servo, LOW);
    delay(19);
  }
  delay(1000);

  // turn clockwise
  for (int i = 0; i < 10; ++i) {
    digitalWrite(servo, HIGH);
    delayMicroseconds(1500);
    digitalWrite(servo, LOW);
    delay(18);
  }
  delay(1000);
}