// LCD2004 Code by Randy Powell

#include <LiquidCrystal_I2C.h>

const int i2c_addr = 0x27;
LiquidCrystal_I2C lcd(i2c_addr,20,4);

void setup() {
  lcd.begin(20, 4);
  lcd.clear();
  lcd.backlight();
}

void loop() {
  lcd.setCursor(1, 0);
  lcd.print("1");
  lcd.setCursor(1, 1);
  lcd.print("2");
  lcd.setCursor(1, 2);
  lcd.print("3");
  lcd.setCursor(1, 3);
  lcd.print("4");
}  // end of void loop