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

#define DHTPIN 23       // Pin koneksi data sensor DHT22
#define DHTTYPE DHT22   // Jenis sensor DHT (DHT11, DHT22, DHT21)
DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 16, 2); // Alamat I2C LCD: 0x27, Ukuran: 16x2

const int blueLedPin = 13;   // Pin LED biru
const int greenLedPin = 12;  // Pin LED hijau
const int redLedPin = 14;    // Pin LED merah

void setup() {
  dht.begin();
  
  pinMode(blueLedPin, OUTPUT);
  pinMode(greenLedPin, OUTPUT);
  pinMode(redLedPin, OUTPUT);
  
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Suhu:");
}

void loop() {
  float temperature = dht.readTemperature(); // Membaca suhu dari sensor DHT22
  
  lcd.setCursor(6, 0);
  lcd.print("    ");
  lcd.setCursor(6, 0);
  lcd.print(temperature);
  lcd.print(" C");
  
  digitalWrite(blueLedPin, LOW);
  digitalWrite(greenLedPin, LOW);
  digitalWrite(redLedPin, LOW);
  
  if (temperature < 17) {
    digitalWrite(blueLedPin, HIGH);
  } else if (temperature >= 17 && temperature <= 27) {
    digitalWrite(greenLedPin, HIGH);
  } else {
    digitalWrite(redLedPin, HIGH);
  }
  
  delay(2000); // Menunda pembacaan suhu selama 2 detik
}