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

const int trigPin = 9;
const int echoPin = 10;
int timer;
int jarak;

void setup() {
  Serial.begin(9600);
  pinMode(echoPin, INPUT);
  pinMode(trigPin, OUTPUT);
  myServo.attach(3);
  lcd.init();
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  timer = pulseIn(echoPin, HIGH);
  jarak = timer / 58;
  Serial.println(jarak);

  if (jarak <= 10) {
    myServo.write(0);
    Serial.println("Open");
    lcd.setCursor(0, 0);
    lcd.println("Terbuka");
  }
  else {
    myServo.write(180);
    Serial.println("Close");
    lcd.setCursor(0, 0);
    lcd.println("Tertutup");
  }
}