#include <Servo.h>

Servo myservo;
int pos = 0;    // variabel untuk menyimpan posisi servo

void setup() {
  myservo.attach(9);  // attaches servo pada pin 9 arduino
}

void loop() {
  for (pos = 0; pos <= 180; pos += 15) {
    myservo.write(pos);
    delay(150); 
  }
  for (pos = 180; pos >= 0; pos -= 15) { 
    myservo.write(pos);             
    delay(150);                    
  }
}