#include <Servo.h>

int pinServo = 10;

Servo palang;
int posisi = 0;

void setup() {
  // put your setup code here, to run once:
  palang.attach(pinServo);

}

void loop() {
  // put your main code here, to run repeatedly:
  for (posisi = 0; posisi <= 180; posisi++) {
    palang.write(posisi);
    delay(20);
  }
  for (posisi = 180; posisi >= 0; posisi--) {
    palang.write(posisi);
    delay(20);
  }
}