PSN-L Email List Message
Subject: Re: AD Converter Modification
From: "David Saum" DSaum@............
Date: Tue, 25 Feb 2003 10:38:45 -0500
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
Also see Jan Axelson's book "USB Complete".
Unfortunately USB I/O is a lot more
complicated than serial.
Hope this helps,
> 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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