#include <LiquidCrystal_I2C.h>

#define PIN A3

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup(){
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("dien tro: ");

}

void loop(){
  
  lcd.setCursor(10, 0);
  lcd.print(analogRead(PIN));
  lcd.print(" ");
  delay(100);
}