> I'm just starting to learn with these things, and I've gone through the
> beginner FAQ... however, reading this list for a couple of weeks showed me
> that some people have some great links up their sleeve... so I was wondering
> if any one had links to info that could help me build my project:

www.voti.nl comes to mind- good beginner PIC page which should give
you a fair start.

> I'm trying to do multiple channel A/D conversion and transmitting the data
> through USB (PIC18f4550) and/or serial (other chips). I'm looking at ~300Hz
> sampling at most, 1-2Hz sampling for slow signals. Is there some simple code
> showing a good way to do this? I'm also interested in learning the 'reason'
> why I should do something, like when to signal the watchdog timer, when/how
> to transfer the data, how to tell which channel it's from, and how to
> timestamp it, etc.

If you are in fact a complete neophyte, I would suggest you abandon
USB PICs right now.  If you really want USB, you can use a
USB-to-serial bridge from FTDI, but I think RS-232 might be more
appropriate.

The other think you might do is buy John Peatman's PIC book.  I forget
the title, but the newer one is the one to go for.  It covers the
18F452.

Questions you need to answer:
1.  Do you want to be able to vary the sampling rate?
2.  How many channels need to be sampled?
3.  Does data need to come back constantly, or is it enough to capture
data in a buffer and send it at a predetermined time?
4.  What resolution do you need on the data (huge huge consideration,
affects everything else)?
5.  What are you going to "catch" this data with on the PC?

Answers?

Mike H.
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