#include <LiquidCrystal_I2C.h>     // if you don´t have I2C version of the display, use LiquidCrystal.h library instead
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display

void loop() {

}

void setup()  {
  Serial.begin (9600);
//  Serial.println ("Hello World");

  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, HIGH);          

  lcd.init();          lcd.backlight();
  lcd.setCursor(0,0);  lcd.print("Hello");
}