Re: "ding" circuit

"Frnak McKenney" <frnak@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:%Ysvh.18473$w91.12852@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Here's a clip from a comp.robotics.misc thread earlier this
month:

PIR Sensors/Modules/Detectors (search on PIR, Fresnel, RE200B)
http://www.hvwtech.com/ SKU#35050 $10.95
http://www.allelectronics.com/ CAT#IRD-10 $3.95
http://www.electronics123.com/ BB054 $8.95
http://store.qkits.com/ QK76 $12.95

Discussion thread on finding Fresnel lenses
http://www.jesseshunting.com/forums/index.php?
s=409bf6d58c94f4f6fc69200d19b42dde&showtopic=5048

Please feel free to add to it. Note that these are low-level
items, e.g. pyro sensors and pyro+lens. You can pick up PIR
wall switches from (e.g.) Home Depot and Lowes, among other
sources.

Thanks!

Btw, I've found complete cat repellent devices with a motion detector, but they're
ridiculously expensive, especially considering you usually need a few for typical
problem areas.

SioL


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