#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0X27, 16, 2);
void setup() {
  pinMode(2, OUTPUT);
  lcd.init();
}
void loop() {
  int level = analogRead(A0);
  lcd.setCursor (0, 0);
  lcd.print("Reading :");
  lcd.setCursor (11, 0);
  lcd.print(level);
  if (level > 500) {
    digitalWrite(2, HIGH);
    lcd.setCursor (0, 1);
    lcd.print("Light is on!");
  } else {
    digitalWrite(2, LOW);
    lcd.setCursor (0, 1);
    lcd.print("Light is off!");
  }
}