#include <LiquidCrystal_I2C.h>
#include <Servo.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo myServo;

const int trigPin = 9;
const int echoPin = 8;
long duration;
int distance;

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  Serial.begin(9600);
  myServo.attach(10);
  lcd.init();
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;
  
  Serial.print("Distance: ");
  Serial.println(distance);

  // lcd.setCursor(0, 0);
  // lcd.println("Jarak :");

  // lcd.setCursor(0, 1);
  // lcd.println(distance);

  if (distance <= 10) {
    myServo.write(90);
    lcd.setCursor(0, 0);
    lcd.println("Pintu");
    lcd.setCursor(0, 1);
    lcd.println("Terbuka");
  } else {
    myServo.write(180);
    lcd.setCursor(0, 0);
    lcd.println("Pintu");
    lcd.setCursor(0, 1);
    lcd.println("Tertutup");
  }
}