Re: Needs pointers to a "distance detector"

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#2789

From: John Nagle
Date: Sun, 26 Jan 1997 00:00

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anabeim@system2.com (anabeim@system2.com) writes:
>I need to build a very small transmitter and receiver that will be placed on 
>two objects. When these objects are more than a certain distance away about 2 
>feet, a signal is generated to say turn a light on or sound a buzzard.
>Can anybody help ?

     Those are commercially available.  Try The Sharper Image and similar
vendors of marginally useful gadgets.  The usual application is a leash
for luggage or children.

					John Nagle

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From: nagle@netcom.com (John Nagle)
Subject: Re: Needs pointers to a "distance detector"
Date: 1997/01/26
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