how to set the contrast?

Using Arduino Displays
1

I've got a cheap 16x2 LCD from Hong Kong coming, pictured below. I am going to use the shiftLCD library.
So, that will take care of the 7 pins driving it. The backlight-I will just hook up with a proper resistor.
But what about the contrast. What do I do with that connection?

2

connect a potentiometer between the negative voltage supply and +5 volts, connect the output to the contrast pin

3

Great! Sounds easy enough.
Something like a 10K?

4

sounds good.

5

I use a multi-turn potentiometer. It's a pain to turn this thing if I'm no the wrong end of the scale but once I get there I can adjust my contrast so much better than single turn pots. Just my 2 cents.

6

liudr:
I use a multi-turn potentiometer. It's a pain to turn this thing if I'm no the wrong end of the scale but once I get there I can adjust my contrast so much better than single turn pots. Just my 2 cents.

thanks, I have a multi-turn 10K, so will use that.