Quote Originally Posted by Darrel Taylor View Post
And it's when it's close to the real value then it doesn't move anymore.
Well, that's sort of the objective of filtering, right?

But I think I'm getting my head around this - it's an issue of the SIZE of change needed to make an impact on the reading. So if there is no averaging, a change is recorded when the reading changes by a whole number value of 1. If you are averaging 4 readings, then the change must be at least a whole number value of 4 before it gets included. With 16 samples, the reading has to change by at least 16 before it registers, and so on. In effect you are not integrating small changes, you are tossing them out... which is sort of where this thread started.

I think I'd better revisit several projects where I've used a rolling average, although I don't believe I've ever used more than 4 samples.