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    jpgrfan's Avatar
    jpgrfan Posts: 1, Reputation: 1
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    #1

    Sep 22, 2008, 01:08 PM
    Motion detector for a flash of light
    I want to construct a motion detector that will fire lights and a horn on a car grill and fender for a halloween effect. I only want it to last 3 -5 seconds then turn back off. Can you help me with a design?
    eriknugent's Avatar
    eriknugent Posts: 90, Reputation: -5
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    #2

    Sep 22, 2008, 02:13 PM

    Depending on the motion sensor if you put it on the test setting it should only come on for about 5 sec I would go to home depot and read the directions from a few and see if it tells you how long the test cycle is.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #3

    Sep 24, 2008, 04:57 AM

    I would use a radar sensor(detector), many have 2 fields, get close and it triggers the warn away, closer and it triggers the alarm output, you will need relays to handle the load of the headlights/lights and the horn.
    You could add a wireless remote to trigger remotely. Altronix make delay relays of all sorts.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #4

    Sep 24, 2008, 07:08 AM

    So does SSAC. You want a non-retrigerable delay on make timer so the timing interval has to elapsed before it is re-triggered.

    A motion detector designed for alarm systems and not walk lights MIGHT work better in this instance.
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