// using https://www.arduino.cc/reference/en/libraries/hd44780
#include <Wire.h>
#include <hd44780.h>                       // main hd44780 header
#include <hd44780ioClass/hd44780_I2Cexp.h> // i2c expander i/o class header
hd44780_I2Cexp lcd;
const int LCD_COLS = 16;
const int LCD_ROWS = 2;

void setup() {
  int result = lcd.begin(LCD_COLS, LCD_ROWS);
  if (result) {
    Serial.print("LCD initialization failed: ");
    Serial.println(result);
    hd44780::fatalError(result);
  }

  lcd.setCursor(0, 0);
  lcd.print("Hello World");

}

void loop() {}