AVR-Chat

Yes, the switching channels delay was a big gotcha for me as well.
Ken

> Gustavo Goretkin wrote:
>> I do have access to the scope, and the signal looks clean to me.
>> Furthermore, when I switch the two channels and axes, the error is
>> pertinent to the input channel of the ADC, and not the output of the
>> sensor
>
> Did you measure directly at the pin of the atmel or do you have any
> "preprocessing" ciruit like an amplifier, filter, buffer etc.?
>
> If your input on the pin of the ADC is fine, only two possiblities
> remain. You could have a faulty chip or some problem with your software.
> I haven't read the datasheet of the atmega32, but I can't imagine any
> misconfiguration that would produce random noise on the input. I once
> had a problem with the ADC because I didn't wait long enough after
> switching channels, so I got data from the wrong channel sometimes,
> which produced strange results of course.
>
> AS
>