Hi, I need to generate a 1300Hz ish sine wave pulse, from a pic, that I can plug into a tape recorder's line in jack to log. Obviously, it's fairly easy to get a 1300 Hz square wave, but what can I do to simply and easily smooth this out a bit, so it's reasonably close to a sine wave? Any pointers appreciated Thanks Jon -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics