PSN-L Email List Message

Subject: Re: AD Converter Modification
From: "Euro Atencio" eatencio@..........
Date: Tue, 25 Feb 2003 11:49:06 -0500

I haven't get the chance to talk to you lately, but I've being fliying like
a "Pilot", going from South America, Central America and Europe, for example
I was in Venezuela last week and came back on Friday and I will be fliying
to nite to London and will be back on Sat and then I will be in Baltimore
next week. But tell me how is it going? How are activities in SID? Is the
planet would split in two do to the fact on lot of quakes? jajaja! got you.
Best Regards;

----- Original Message -----
From: "David Saum" 
Sent: Tuesday, February 25, 2003 10:38 AM
Subject: Re: AD Converter Modification

> Richard,
> To keep costs as low as possible
> you might want to find a microprocessor
> with onboard ADC and USB ports.  I am
> using a PIC14000 with onboard 16 bit
> ADC ports, but it can only do a software
> based standard serial I/O.   There is a PIC16c77
> that has onboard 12 bit ADC ports, plus a port
> that can be used for software based USB, all for
> about $5.   See my web page for some PIC
> programming links.
> Also see Jan Axelson's book "USB Complete".
> Unfortunately USB I/O is a lot more
> complicated than serial.
> Hope this helps,
> Dave
> > From:    Richard Diaz 
> > Date:    Sun, 23 Feb 2003 19:23:26 -0700
> >
> > I am from Colorado School of Mines and currently am working on a
> > seismometer to be mass produced for general education classroom use.
> > We have been using the DATAQ instruments DI-194RS starter kit, but is
> > not really streamlined for what we need it for.  I was thinking about
> > an AD converter that only has two input, and outputs to a USB port,
> > since it is becoming a mainstream method of PC input.  I am not really
> > sure how to go about modifying and AD converter in such a manner.  If
> > anyone has any insight, could you please assist?
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