> Kevin wrote:
> >> That's the basic setup.  However I would apply some low pass
> >> filtering to the A/D readings.  You need a new reading only every 3.3
> >> seconds, during which time you can take 1100 readings per channel and
> >> still only use a small fraction of the CPU.  Two poles of LPF each
> >> with 8 shift bits per pole settles to about 93% in 1100 iterations.
> >> That sounds like a good match, especially since shifting by 8 bits is
> >> particularly trivial, and 2 x 8 bits is a lot of random noise
> >> attenuation.
> >
> > Anybody care to expand on this or throw in some code
> > snippets ?
>
> There are whole digital signal processing books discussing this sort of
> thing.  Expanding on it is impossible to do efficiently without knowing what
> part specifically you want to know more about.
>
This part.
Two poles of LPF each with 8 shift bits per pole settles to about 93% in 1100
iterations.
especially since shifting by 8 bits is particularly trivial,
and 2 x 8 bits is a lot of random noise attenuation.

Maybe a code snippet on how to implement this in code to
improve my AD readings.

TIA,
Kevin

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