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

#define DHT_PIN 2
#define LED_BIRU 7  // Pin LED biru
#define LED_MERAH 8   // Pin LED merah

DHT dht(DHT_PIN, DHT22);

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(LED_BIRU, OUTPUT);
  pinMode(LED_MERAH, OUTPUT);

  Serial.begin(9600);
  dht.begin();
  lcd.init();
  lcd.backlight();

}

void loop() {
  float suhu = dht.readTemperature();
  float kelembapan = dht.readHumidity();
  float temperature = dht.readTemperature();

  if(isnan(suhu) || isnan(kelembapan)){
    Serial.println("Sensor Rusak");
  } else {
    Serial.print("Suhu: ");
    Serial.print(suhu);
    Serial.print(" C\t");
    Serial.print("Kelembapan: ");
    Serial.print(kelembapan);
    Serial.println(" %");

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Suhu: ");
    lcd.print(suhu);
    lcd.print(" C");

    lcd.setCursor(0, 1);
    lcd.print("Kelembapan: ");
    lcd.print(kelembapan);
  }

     // Mengontrol LED berdasarkan suhu
  if (temperature < 30) {
    digitalWrite(LED_BIRU, HIGH);   // LED biru menyala
    digitalWrite(LED_MERAH, LOW);     // LED merah mati
    lcd.setCursor(6, 1);
  } else {
    digitalWrite(LED_BIRU, LOW);    // LED biru mati
    digitalWrite(LED_MERAH, HIGH);    // LED merah menyala
    lcd.setCursor(4, 1);
  }
  delay(1500);
}