#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Pastikan alamat I2C sesuai dengan hasil I2C Scanner
LiquidCrystal_I2C lcd(0x27, 16, 2);

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

void setup() {
  lcd.init();          // Inisialisasi LCD
  lcd.backlight();     // Menyalakan lampu latar LCD

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  lcd.setCursor(0, 0);
  lcd.print("Jarak");
}

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

  long duration = pulseIn(echoPin, HIGH);
  int distance = duration * 0.034 / 2;

  lcd.setCursor(0, 1);
  lcd.print("                ");  // Menghapus teks lama
  lcd.setCursor(0, 1);
  lcd.print(distance);
  lcd.print(" cm");

  delay(500);
}