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Help building an alarm system

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Discussion in 'General Electronics Discussion' started by McGooTheWise, Aug 7, 2011.

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  1. Aug 7, 2011 #1
    McGooTheWise

    McGooTheWise

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    Aug 7, 2011
    I'm not sure if I should go from scratch for what I want, because I would like to program different audio files onto the system, or if I should mod a system off of ebay. It has to be a motion sensor, and be very aduible over a running diesel engine. I'm not exactly new to electronics, but I am new to building them from scratch, and I would like to learn as I go with this project.

    Basically, all I need to know is what components might compose something like this, just what type of bus, or processor I need. I'm in the research stage now, and any extra help is very apreciated. Thanks. :)
     
  2. Aug 9, 2011 #2
    jackorocko

    jackorocko

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    Apr 4, 2010
    Well you don't give a whole bunch of information about the purpose of your alarm. So one can only speculate on what you need.

    This is something I was working on a year or so ago. It uses a simple voltage comparator to trip the alarm and then after a set time the alarm will be reset ready to be tripped again. Maybe it will give you a start
     

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  3. Aug 9, 2011 #3
    McGooTheWise

    McGooTheWise

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    Aug 7, 2011
    Well, its purpose is to use on a car or truck as a proximity alarm with interchangeable audio files for scaring off people who might like to steal fuel, or bug truckers when they're trying to sleep.
     
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