Quote Originally Posted by Ioannis View Post
Can you get rid off of the U4 and replace the function with some PWM from the PIC itself?

Ioannis
Mmmmm.... I don't know. The contrast pin for the LCD wants to be on the "wiper" of a 10K pot with the other legs connected to Vdd and Vss.

I'm not sure what would happen if I fed it from a filtered PWM output... ?

U4 actually eats up about the same amount of real estate as the 10K pot that it replaced on my original design, but it adds easy user adjustment.

Actually, I've been working on it some today and I'm starting to think I just might get the whole thing on 2 layer now that I've got a bit better layout.

We'll see....



steve