#include <LiquidCrystal_I2C.h>
#include <DHT.h>

#define DHTPIN 2       // Pin terhubung ke DHT22.
#define DHTTYPE DHT22  // Tipe sensor DHT.

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2); // Inisialisasi LCD 16x2.

void setup() {
  lcd.init();
  lcd.backlight();
  dht.begin();

  lcd.setCursor(0, 0);
  lcd.print("Membaca Sensor");
  delay(2000);
  lcd.clear();
}

void loop() {
  float hum = dht.readHumidity();
  float temp = dht.readTemperature();

  if (isnan(hum) || isnan(temp)) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Sensor Error!");
    delay(2000);
    return;
  }

  // Format display dengan spacing yang proper.
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(temp, 1);
  lcd.print((char)223); // Simbol derajat.
  lcd.print("C  ");

  lcd.setCursor(0, 1);
  lcd.print("Lembap: ");
  lcd.print(hum, 1);
  lcd.print("%   ");

  delay(2000);
}