Samsung UC 40207 LCD character display (was Re: [sdiy] LCD datasheet required)

[David Brown]

You will find that a contrast control has very little range.  I 
usually do use a potentiometer between ground and Vcc but it's always 
set nearly at the end.

At 07:05 AM 2/2/2010, Tom Wiltshire wrote:
>Just to say thanks to everyone who helped me with this. This morning
>I successfully got words to display on the LCD. The contrast voltage on
>pin 3 I'm unclear about, but tying it to 0V gives a perfectly visible display.