>Date:    Tue, 1 Feb 2000 22:57:08 PST
>From:    William Chops Westfield <billw@CISCO.COM>
>Subject: Re: [OT] PIR
>
>   The PIRs found inside of the cheap motion detectors (*)
>
>   (*) $8.00 at Home Depot, Lowes, Wal-Mart, and others, with all the
>   electronics, lamp sockets and more...
>
>So does anyone have enough data on cheap motion detector internals so that
>they can be taken apart and used in low voltage circuits?


1. Most motion sensors now use a dedicated IC (about $US1.70 in volume)
plus a RE200B  type of motion sensor (about $US0.90 in volume) plus a
fresnel lens.

My kit 30 has all the bells and whistles you can attach to a commercial
motion sensor IC, the KC778B in DIP form. The data sheet is on my website
under Kit 30. The data sheet for the RE200B is also there.


2. My Kit 76 is a module which uses the SM version of the same chip plus
sensor plus fresnel lens - PCB mounted.


All of these items are now made in China.


I can sell any of them to you at very good prices. For small quantities
sending me $US cash GBP  or DM notes is the best.

regards,

Peter Crowcroft
                    DIY Electronics (HK) Ltd
                PO Box 88458, Sham Shui Po, Hong Kong
Voice: 852-2720 0255   Fax: 852-2725 0610    Email: peter@kitsrus.com
                       Web: http://kitsrus.com
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