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

  #define I2C_ADDR 0x27
  #define TOTAL_ROWS 2
  #define TOTAL_COLUMS 16 


  LiquidCrystal_I2C lcd(I2C_ADDR, TOTAL_COLUMS,TOTAL_ROWS);

  void setup() {
    lcd.init();
    lcd.backlight();
  }

  void loop() {
    int j=0;
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("HELLO MARVEL");
    delay(2000);

    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("lets count 0-20");
    delay(2000);

    lcd.clear();
    for (int j=0; j <=20; j++);{
    lcd.setCursor(0,1);
    lcd.print(j);
    delay(1000);
    lcd.clear();
    }
  }