#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  lcd.init();  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Hello, ESP32!");
  delay(1000);
  lcd.clear();
}

void loop() {
  lcd.setCursor(0, 1);
  lcd.print("IoT workshop");  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("lcd Test");  delay(1000);
  lcd.clear();
}