Tim Hart wrote:
>
> In extreme cases...I guess I could turn up the brightness and record it via digital camcorder.  It's visible for 1/30th of a second...

A cheap webcam works well too.

> What do most people use to debug Rs232 issues...?

Oscilloscope for windows and a sound card.
http://polly.phys.msu.su/~zeld/oscill.html

Have fun..
Robert

--
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