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RE: diy ultrasonic cat scarer
- To: ukha_d <ukha_d@xxxxxxx>
- Subject: RE: diy ultrasonic cat scarer
- From: Keith Doxey <ukha@xxxxxxx>
- Date: Wed, 25 Jul 2001 10:16:49 +0100
- Delivered-to: rich@xxxxxxx
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
555 timer running as a 22kHz oscilator driving a Piezo Horn.
555 timer and components about 2-3 quid
Piezo Horn about 7 quid.
You should be able to build it for a tenner.
or use this http://www.magenta2000.co.uk/kits/812.htm
Keith
-----Original Message-----
From: rid@xxxxxxx [mailto:rid@xxxxxxx]
Sent: 25 July 2001 10:06
To: ukha_d@xxxxxxx
Subject: [ukha_d] diy ultrasonic cat scarer
hi
i want to scare some cats from my garden (mainly because i have young
kids, and don't want them to catch toxoplasmosis (or whatever))
otherwise cats are fine!!!
i know there are cat ultrasonic cat scarers out there, but they are
in the 40 pounds region
i want to see if i can get an ultrasonic transducer
(Piezoelectric???) to vibrate at 18 - 22.5 kHz, but i don't want t
have to build any extra circuitry
i will then link the whole thing into homevision
any ideas
rid
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Automated Home UK
http://www.automatedhome.co.uk
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