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

#define DHTPIN 15
#define DHTTYPE DHT22
#define MQ2PIN 34

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2); // Alamat default LCD I2C

void setup() {
  Serial.begin(115200);
  dht.begin();
  lcd.init();
  lcd.backlight();

  lcd.setCursor(0, 0);
  lcd.print("Inisialisasi...");
  delay(2000);
}

void loop() {
  float suhu = dht.readTemperature();
  float hum = dht.readHumidity();
  int mq2 = analogRead(MQ2PIN);

  Serial.print("Suhu: "); Serial.print(suhu);
  Serial.print(" °C, Kelembapan: "); Serial.print(hum);
  Serial.print(" %, MQ2: "); Serial.println(mq2);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("T:"); lcd.print(suhu, 1); lcd.print("C H:"); lcd.print(hum, 0); lcd.print("%");

  lcd.setCursor(0, 1);
  lcd.print("Asap: "); lcd.print(mq2);

  delay(1500);
}