#include <Servo.h>

int trigPin = 5;
int echoPin = 6;
Servo myservo;

void setup() {
  Serial.begin(9600);
  pinMode(trigPin, INPUT);
  pinMode(echoPin, INPUT);
  myservo.attach(10);
}

void loop() {
  long duration, distance;

  digitalWrite(trigPin, LOW);
  delayMicroseconds(5);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(5);
  digitalWrite(trigPin, LOW);


  // mengukur durasi dari echo
  duration = pulseIn(echoPin, HIGH);

  // Menghitung jarak
  distance = duration*0.034/2;
  Serial.print("Jarak   :   ");
  Serial.println(distance);

  // Mengecek apabila sampah dapat dibuka
  if (distance<= 30) {
    myservo.write(0); 
    delay(5);
  } else {
    myservo.write(90);
    delay(5);
  }
}