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I've taken apart an old range finder (see photo here). It uses a circular, seemingly gold-plated, two-wire sensor that I'd like to re-use in an Arduino project. I'm looking for a datasheet of the sensor and/or a circuit-diagram. Any help is welcome.

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The big circular parts likely is ultrasonic transducer as used in instant camera.

http://www.uoxray.uoregon.edu/polamod/

https://www.google.com/?gws_rd=ssl#q=polaroid+ultrasonic+ranging+module&revid=399558007&safe=off

Working principle is same as modern unit, easily available at a few US dollars. The transducer does NOT work by itself, needs the associate PCB to work.

  • Thanks! This got me going. The first link provided shows pictures of the exact same component. – Mausy5043 Jul 31 '14 at 12:34

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