Everyday practical electronics mag did somthing similar to this not long =
ago. Can't remember the exact details but I remember that their version =
used the parallel port, but after I had a look at the PIC source, I =
decided I could modify it to use 232. Of course, then I decided I could =
just go one better and build my own version - just never got around to =
it. If you do go for bitscope or one of the others, I'd be interested in =
how you get on. It's not a piece of equipment I'd use a lot but there =
are time when one would be very usefull.
Elector published an article a couple of months ago on using USB. The =
USB modules they used were fairly cheap and they were controlling them =
from a Visual Basic program they threw together. One of those, a PIC, =
maybe some RAM and your almost home. Maybe I should think about building =
one after all ;-)


Joe.


-----Original Message-----
From: Edson Brusque (listas) [mailto:brusque.listas@CITRONICS.COM.BR]
Sent: 09 June 2002 14:00
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE]: USB-based LA?


Hello Guillermo, Joe etc,

>>Can anyone recommend a decent PC-based logic analyzer
>>with USB connection? So far I've found a couple of nice
>>ones but all of them were parallel port only...
>As a matter of interest, which parallel port ones have you been looking =
at
?
>I'm looking at getting one for home use (or building one) and parallel
isn't a problem for me.

    have you heard about BitScope (www.bitscope.com)? It's a =
dual-channel
sampling osciloscope with 8 logic inputs.  It's not very expensive as =
you
can buy the complete assembled kit for US$395.00. Also, you can learn a =
lot
studing the squematics and the PIC software. Surelly, there'll be some
tricks you'll love and incorporate it on your projects.

    The hardware is very good but there's not a "really pro" software =
for it
yet. The better one is the Scopal (www.scopal.com).

    However, the guys at BitScope are working on some enhancements and =
the
new "official" software is comming soon. The demo version on the website =
is
very impressive.

    You connect it to PC via RS232, not USB, but they're working on a
Network Interface Adaptor!

    There's a users group at http://groups.yahoo.com/group/bitscope/

    Best regards,

    Brusque

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Edson Brusque                 C.I.Tronics Lighting Designers Ltda
Research and Development               Blumenau  -  SC  -  Brazil
Say NO to HTML mail                          www.citronics.com.br
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