Newsgroups: comp.robotics
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From: altenbur@plains (Karl Altenburg)
Subject: Re: Single Chip Proximity Detector Info
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Date: Tue, 3 Aug 1993 03:34:28 GMT
References: <1993Aug2.180500.17212@isrc.sandia.gov>
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Larry Ray (ray@isrc.sandia.gov) wrote:
: A couple of months ago, there was a discussion here about a single chip
: that implements most of an optical proximity sensor, except the LED

You may be refering to the optical proximity sensors made by Hamamatsu.
I've been using the Hamamatsu S4282-11 coulped to both IR and super, bright
red LEDs.  These detectors are encased in clear epoxy about one quarter the
size of a key on a computer keyboard.  They have four pins; ground, power,
LED driver and output.  They return just two states high and low, and I have
been getting detection ranges of about 3 inches or so with this part.  They
have others with better ranges.

Hamamatsu's US number and address is:

Telephone:	201 231-0960

Hamamatsu Corp.
360 Foothill Road
PO Box 6910
Bridgewater, NJ  08807-0910

--
Karl R Altenburg				altenbur@plains.NoDak.edu
North Dakota State University, Fargo, ND  58105

All things are artificial, for nature is the art of God.  SIR THOMAS BROWNE
