Auduino pot resistanze

[JoeSeggiola]

Hi everyone.

I just tried to build my own Auduino with Arduino Diecimila
(ATmega168). I had to use five 470k linear pots because I've already
have a box with that components (it was a previous project).

Auduino can output sound to pin 3, but it's not as good as the sound I
hear on the example videos on the Auduino wiki page. In fact, I'm not
able to reproduce, for example, sound like the one the first Vimeo
video.

I read that pots have to be from 1k to 20k, but I can't understand
what's the problem with bigger ones. I mean, Arduino read analog
values based on voltage (that is always from 0 to 5V) independently
from resistence and current. I'm wrong??