https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
Serial.begin(115200); //Use predefined PINS consts
Wire.begin(D2, D1); //Wire.begin(int sda, int scl)
lcd.begin();
lcd.home();
lcd.print("Hello, NodeMCU");
}
void loop() {
// do nothing here
}