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

RTC_DS3231 rtc;
LiquidCrystal_I2C lcd(0x27, 20, 4);  // Set the LCD I2C address to 0x27 for a 20 chars and 4 line display

char t[32];
float temperature;

void setup() 
{
  Serial.begin(9600);
  Wire.begin();

  lcd.begin(20, 4);  // Initialize the LCD display with 20 columns and 4 rows
  lcd.backlight();

  rtc.begin();
  rtc.adjust(DateTime(2024, 4, 2, 12, 07, 56)); // Set the desired date and time
}

void loop()
{
  DateTime now = rtc.now();

  sprintf(t, "%02d:%02d:%02d %02d/%02d/%02d",  now.hour(), now.minute(), now.second(), now.day(), now.month(), now.year());  
  
  lcd.setCursor(0, 0);
  lcd.print("Date/Time: ");
  lcd.setCursor(0, 1);
  lcd.print(t);

  temperature = rtc.getTemperature();
  lcd.setCursor(0, 2);
  lcd.print("Temperature: ");
  lcd.print(temperature);
  lcd.print(" C");

  delay(1000);
}