[sdiy] AVR Synth

[Jaroslaw Ziembicki]

> By the way, why use 22k potentiometers, is there a specific reason for 
> this? Potentiometers with a higher value would allow for less current 
> consumption and as far as I can see they are only used as voltage 
> dividers. Maybe I'm missing something?

According to Atmel, the impedance being seen from the analog inputs
should not exceed 10k. Therefore the potentiometer resistance should
lay below 40k. Theoretically.
In the practice, 50k and 100k pots will work correctly. Just a minor
nonlinearity may be expected.
By using 100k pots approx. 1.4 mA supply current can be saved.

Regards to all AVRSYN builders

Jarek (still a bit tired after his first marathon on last Sunday)
www.jarek.synth.net