#include <LiquidCrystal.h>
LiquidCrystal lcd(18, 5, 17, 16, 4, 0);
void setup() {
  Serial.begin( 115200);
  Serial.println("Hello,ESP32");
// set up the LCD's number of columns and rows:
lcd.begin(16,2);
// Print a message to the LCD.
lcd.print("hello,world!");
}
void loop() { 
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Hello");
  lcd.setCursor(0,1);
  lcd.print("World");
  delay(1000);
}