floresta:
The resistor (or pot) is to adjust the display contrast. Once you set it with a potentiometer, you can remove the pot and put in a fixed resistor instead.
And how would you do that? All of my potentiometers have three terminals but my resistors have only two.
Don
I guess once you know the right resistence for your lcd screen you dont need 3. I think you connect the resistor between the right lcd pin (pin 3) and the ground. Someone correct me if im wrong.