Quote Originally Posted by burak450 View Post
When servo rotates,brightness of lcd changes (getting brighter or darker)...I think thats another weird thing...
Doesn't that right there tell you something about the quality of your power supply?
Let's see...if I'm driving down the road, and my headlights change brightness, does that tell me anything about the electrical power in the car? If I'm sitting in my living room at night reading a book and the room's lights either dim or get brighter, would that tell me something about the local power grid?

I don't see ANY capacitors in there, either across Vdd and Vss or across your servo's power supply. I don't see what kind of power you are supplying this circuit with. I don't see a lot of anything.

Ya know, for that matter, we haven't seen your code yet... Who knows...maybe it is actually a firmware problem...