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

RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() 
{
  // put your setup code here, to run once:
  Serial.begin(9600);
  
  lcd.begin(16,2);
  lcd.backlight();

  if(!rtc.begin())
  {
     Serial.println("Cant find RTC");
     while(1);

  }
}

void loop()
{
    DateTime now = rtc.now();
    int hr = now.hour()%12;
    if(now.hour()==0)
      hr=hr+12;

    lcd.print(hr);
    Serial.println(hr);
    delay(1000);
    lcd.clear(); 
      
}