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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Tuesday, June 01, 2021 03:20 PM
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Gadget Circuits
Infrared Circuits
Motion Detector Circuits |
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Pigeon Scarecrow |
| I have an area on my roof
where a large flock of pigeons like to roost. Their nesting materials and
droppings really make a mess. Often there is enough junk from them that it clogs my
roof gutters. Perhaps one way to scare them away is with a device mounted on
the roof near their favorite roosting spot. The device could contain an
infrared motion detector. |
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| When
it detected their motion, a spring loaded cover would suddenly pop up, like a
jack-in-the-box. The thing could be equipped with a small solar panel, which could
charge up either a super capacitor or a long life battery. After each pop up
activation, a motor would pull the cover down into the body of the box. A solenoid
brake would lock the system in place, making it ready for another cycle. I think
the device could be camouflaged to look like a standard roof vent. |
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Perhaps instead of using an infrared motion detector
to activate the device, it could just go through a cycle every 10 minutes or so.
It could also contain daylight sensor so at night, the number of activations would
be reduced to perhaps once every 30 or 60 minutes. This should extend battery
life. |
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eMail David A.
Johnson, P.E. about this circuit |
