#include <DHT.h>
#include <LiquidCrystal.h>
#define DHTPIN 9
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);
// Penempatan Pin LCD RS, E, D4, D5, D6, D7
LiquidCrystal lcd(2,3,4,5,6,7);
const int relayPin = 8;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW); // Matikan relay pada awalnya
  dht.begin();
  lcd.print("Monitoring Suhu");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(2000); // Tunggu 2 detik antara pembacaan

  float suhu = dht.readTemperature(); // Baca suhu
  float kelembaban = dht.readHumidity(); // Baca kelembaban

  Serial.print("Suhu: ");
  Serial.print(suhu);
  Serial.print(" °C, Kelembaban: ");
  Serial.print(kelembaban);
  Serial.println(" %");

  // Cek jika suhu > 30°C
  if (suhu > 30) {
    digitalWrite(relayPin, HIGH); // Nyalakan relay
    Serial.println("Relay dinyalakan!");
  } else {
    digitalWrite(relayPin, LOW); // Matikan relay
    Serial.println("Relay dimatikan.");
  }
}