Be warned...it's still very much a work in progress, I've just revisited this one & noticed a whopping proble. On the basis that a picture is worth a thousand words, I just posted up a youtube video, which illustrates my last remaining problem - there appears to be bit of an ssue measuring smaller phase shifts...
Have a look at my video on this thread...
http://www.picbasic.co.uk/forum/show...4382#post94382
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