Look at this line :LiquidCrystal lcd(7, 8, 9, 10, 11, 12);LiquidCrystal(rs, enable, d4, d5, d6, d7);Did you connect the pins at the right place ? example : pin 7 to rs, pin 8 to enable, etc The link is a standard LCD display. The LCD library should work. It work with me. I have IDE 022. And I have different LCD displays too, but the pins out are standard LCD display. As long the pins correspond to the pins inside the function, and the code is correct, it should work.
Dont forget the PoT ,, or you wont see a thing