Quote Originally Posted by erice1984 View Post
I have, just dont know how to interpret the signal, was looking for suggestions, and I have some code written for display etc.

thanks.
Well, what does your baseline (no knocking) signal look like?
What does your knocking signal look like?
I know what they 'should' look like according to the books, but what do YOUR signals look like, with YOUR input circuit, filters, etc.
Post some 'scope pictures or something...