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From: tmiller@BINAH.CC.BRANDEIS.EDU
Newsgroups: sci.electronics
Subject: Motion Sensor
Message-ID: <0093EA25.49433FE0@BINAH.CC.BRANDEIS.EDU>
Date: 23 Oct 90 23:25:44 GMT
Sender: @chaos.cs.brandeis.edu
Reply-To: tmiller@BINAH.CC.BRANDEIS.EDU
Organization: Brandeis University
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Recently someone was asking where they could obtain a cheap motion
sensor.  One source was an outdoor light which I find kind of messy
for little projects.  I found a kit at HeathKit for $25 which comes with
the sensor, a small circuit board, and works from a 9V battery.  

Of course you have to assemble it, but it comes with all the parts
and diagrams as well as a nice description of how it works.  The
pre-drilled and printed circuit board is 4" X 3" and the sensor mounts
directly on it.
							Todd M. Miller