#include <LiquidCrystal_I2C.h>
#include <Wire.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // Connection (SCL- D1, SDA-D2)

void setup() {
    Serial.begin(115200);
    
    // Use predefined PINS consts
    //Wire.begin();            //The ESP8266 automatically assigns the default I2C pins:
                             //SDA = GPIO4 (D2), //SCL = GPIO5 (D1)
                            // If you need to use different pins, you should use Wire.begin(SDA, SCL);,
                            //but for ESP8266, the default works fine.
    
    lcd.init();  // Correct function to initialize the LCD
    lcd.backlight(); // Turn on the backlight (if needed)
    
    lcd.home();
    lcd.print("Hello, NodeMCU");
}

void loop() {
    // do nothing here
}