Just becareful with lcds that have backpacks already attached, some do not have the SDA SCL pullups on board, hence may not work. I hooked up a lcd with backpack fitted and it would not work until 10Ks were added.

Picture below is the backpack to avoid, apart from the fact you cannot change the address even if you wanted.

Name: no resistors backpak.jpg Views: 6312 Size: 100.6 KB