#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);
// Create an RTC object
RTC_DS1307 rtc;

void setup() {
  // Start the serial communication
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();

  // Check if the RTC is connected properly
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // Check if the RTC is running, otherwise set the time
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running, setting the time!");
    // The following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {
  // Get the current date and time from the RTC
  DateTime now = rtc.now();

  // Print the current date and time
  
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.print(" ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.print(now.second(), DEC);
  Serial.println();
  
  lcd.setCursor(0,0);
  lcd.print(now.year(), DEC);
  lcd.print('/');
  lcd.print(now.month(), DEC);
  lcd.print('/');
  lcd.print(now.day(), DEC);
  lcd.print(" ");
  lcd.setCursor(0,1);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);
  lcd.println();
  
  // Wait for a second before repeating
  delay(1000);
}