#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup(){
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);

  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Hello, world!");
  lcd.setCursor(0,1);
  lcd.print("Impressive Online");
  lcd.setCursor(0,2);
  lcd.print("Arduino Simulator!");
  lcd.setCursor(0,3);
  lcd.print("www.jieqinwang.com");
}


void loop(){
  digitalWrite(LED_BUILTIN, HIGH);
  delay(200);
  digitalWrite(LED_BUILTIN, LOW);
  delay(200);
}