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

// LCD setup
LiquidCrystal_I2C lcd(0x27, 16, 2);

// DHT22 setup
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// RTC setup
RTC_DS1307 rtc;

void setup() {
  lcd.begin(16, 2);
  lcd.backlight();

  dht.begin();
  rtc.begin();

  if (!rtc.isrunning()) {
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // Set compile time only once
  }
}

void loop() {
  DateTime now = rtc.now();
  float temp = dht.readTemperature();

  lcd.setCursor(0, 0);
  lcd.print("Time:");
  if (now.hour() < 10) lcd.print("0");
  lcd.print(now.hour());
  lcd.print(":");
  if (now.minute() < 10) lcd.print("0");
  lcd.print(now.minute());
  lcd.print(":");
  if (now.second() < 10) lcd.print("0");
  lcd.print(now.second());

  lcd.setCursor(0, 1);
  lcd.print("Temp:");
  lcd.print(temp);
  lcd.print("C");

  delay(1000);
}