#include <Servo.h>
Servo myservo; 
int pos = 0; 
const int sensor = 2;

void setup() { 
  //Memasang servo pada pin 9
  myservo.attach(9); 
  pinMode(sensor, INPUT_PULLUP);
  myservo.write(0); 
} 
void loop() { 
  int StatusPin = digitalRead(sensor);

  if (StatusPin == 0 ){
    myservo.write(180); 
    delay(2000);
    myservo.write(0); 
  }

}