//RTC library link: https://github.com/jcw/rtclib
//LCD I2C library link: http://www.dfrobot.com/wiki/index.php/I2C/TWI_LCD1602_Module_(Gadgeteer_Compatible)_(SKU:_DFR0063)
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <RTClib.h>
#if defined(ARDUINO) && ARDUINO >= 100
#define printByte(args)  write(args);
#else
#define printByte(args)  print(args,BYTE);
#endif
uint8_t clock[8] = {0x0,0xe,0x15,0x17,0x11,0xe,0x0};

RTC_DS1307 RTC;
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display
void setup()
{
  lcd.init();                      // initialize the lcd 
    // Print a message to the LCD.
      lcd.backlight();
        lcd.print("Initialising...");
            lcd.createChar(2, clock);
              Wire.begin();
                 RTC.begin();
                    
                       // following line sets the RTC to the date & time this sketch was compiled
                           //RTC.adjust(DateTime(__DATE__, __TIME__));
                           }
                           void loop()
                           {
                             lcd.clear();
                                DateTime now = RTC.now();
                                   lcd.printByte(2);
                                      lcd.print(" ");
                                        lcd.print(now.hour(), DEC);
                                            lcd.print(':');
                                                lcd.print(now.minute(), DEC);
                                                    lcd.print(':');
                                                        lcd.print(now.second(), DEC);
                                                           lcd.setCursor(0, 1);
                                                              lcd.print(now.day(), DEC);
                                                                  lcd.print('/');
                                                                      lcd.print(now.month(), DEC);
                                                                          lcd.print('/');
                                                                              lcd.print(now.year(), DEC);
                                                                                  lcd.print(' ');
                                                                                    delay(1000);
                                                                                    }