> > Anybody got a good averaging algorithm?

>
> I have another question about this. One of my pic aplications is a
> cow scale, I do my best to keep it still but you can imagine how the
> cow listen to me, it don't keep still at all. The filtering I'm
> doing is: VAL=(LASTVAL/7+NEWVAL)/8 I know thie is not the best way,
> is the median average better in this case?

I'll bet that a sample size of 8 will give you nothing but noise.

METHOD 1:  Slaughter the cow, weigh it, and have a barbeque.;-)

METHOD 2: (easier on the cow)  Another post talks about an adaptive
filter.  Average over a small number of readings during 1-2 seconds,
display this as an initial value.  Then begin averaging over longer
periods and more samples.

You might also try taking two readings of 8-10 samples a couple of
seconds apart.  If the readings are the same within a small window
then the cow is momentarily still.  While it is still, shoot it
between the eyes and go back to method 1. ;-)




Best Regards,

Lawrence Lile