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From: rrw@naucse.cse.nau.edu (Robert Wier)
Newsgroups: sci.electronics
Subject: Poloroid ? Ultrasonics module
Message-ID: <2691@naucse.cse.nau.edu>
Date: 12 Oct 90 18:18:22 GMT
Organization: Northern Arizona University, Flagstaff AZ
Lines: 32


 I have need to do some distance measurements, relatively
 low precision (say, to 1") at a range of about 6' - 10'.
 I remember a number of years ago that Poloroid (I THINK)
 had a design kit available based on the circuit they were
 using in their auto focus cameras. I also remember it as
 being relatively expensive for educational use ($200?).  At
 any rate, I need information on this now, and of course
 I can't find anything in my files.

 Several questions:  Does anyone know if either Don Lancaster
 or Steve Circica (spelling?) has had any articles on this?
 Does anyone have a contact number at Poloroid?  Any good
 sources for modules?

 I see old/bashed poloroid cameras at swap fests fairly regularly,
 in the 10$ - 15$ range.  I'd thought about buying some of these
 and extracting the ultrasonic module.  Wonder if anyone 
 has already done this?

 I'd be very grateful for any information along these lines.
 Thanks!

-bw

 - Bob Wier

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