> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Steve Willoughby
> >         a) do I have 5 volts on the pins where it should be?
> >         b) is my crystal oscillating?
> >         c) is my port pin toggling?
> >         d) is there any data coming in on the serial port line?
>
> If you're really only interested in only that level of data, a simple,
> cheap logic probe may suffice.  Mine has high/low pitch beeping for logic
> 1/0, so I don't even have to look at it while poking it around the pins
> on a board, and you can get to where you know what some typical waveforms
> (like serial I/O or ICSP data) "sound like" as they pulse back and forth.
>
>

Yes, I agree.  Actually I bought a logic probe as one of my first tools, and
it has been very useful.  Since they are so cheap, its great value.

Bruce Partridge
http://www.rebreather.ca
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