RE: [AVR-Chat] ADC tips?
2005-03-11 by John Samperi
At 06:03 PM 11/03/2005, you wrote:
>Note that VREF is a high impedant source, and only a capacitive
> >load should be connected in a system.
>
>Um, I did a google search and couldn't see anything on turning a resistive
>load (which is what I am guessing a variable resistor is) to a capacitive
>load. Could you offer any advice here?
I guess it means that you are not supposed to connect anything to
Vref but a filter cap (100 nF). You are not supposed to connect your
pots to Vref as they will be drawing current. Try and connect your
pots to the Vcc and switch the reference to Vcc also and see what happens.
Regards
John Samperi
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