#include <LiquidCrystal_I2C.h>

// Set the LCD address, number of columns and rows
// Replace 0x27 with your LCD's actual address if different
LiquidCrystal_I2C lcd(0x27, 16, 2); 

void setup() {
  Serial.begin(9600); // Initialize serial communication
  lcd.init();          // Initialize the LCD
  lcd.backlight();     // Turn on the backlight
  lcd.setCursor(0,0);
  lcd.print("Hello, ESP32!"); // Display a message
}

void loop() {
  lcd.setCursor(0,1);
  lcd.print("this is test message")
  // You can add code here to update the display
}