#include <Wire.h>          
#include <LiquidCrystal_I2C.h> 
int sec;
int min;
int hour;
LiquidCrystal_I2C lcd(0x27, 16, 2);


void setup() {
  lcd.init();           
  lcd.backlight();       
}
void loop(){
  sec++;
  if(sec>=60){
    sec=0;
    min++;}
   
   
  if(min>=60){
    min=0;
    hour++;
    }
  if
   
  lcd.setCursor(0,1);
  if(min<10){
    lcd.print("0");
    lcd.print(min);
    lcd.print(":");}
  
   if(sec<10){
    lcd.print("0");
    lcd.print(sec);}
   
  
 delay(500);
}