#include <LiquidCrystal_12C.h>

LiquidCrystal_12C lcd(0x27, 16, 2);

int counter = 0;

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

  lcd.setCursor(0, 0);
  lcd.print("Counter:");
}

void loop() {
  lcd.setCursor(0, 1);
  lcd.print(counter);
  counter++;

  delay(500);
}