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Thread: Self made car alarm

  1. #1
    Maximum Bitrate
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    Mar 2001
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    Cincinnati, Ohio
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    729

    Question Self made car alarm

    I'm wondering if anyone can look over these diagrams and tell me if they are ok.
    I am building a Car alarm from a Basic Stamp,
    some reed relays, a 12 volt UHF reciever and matching Key chain remote, 2 stage shock and and radar (it detects movement) sensors and a 120db Piezo siren.
    I have already designed the program for the chip, although I lost it in a computer Crash.
    All of the 5 volts stuff is powered by a 6 volt (the chip can use between 5 and 15 volts) RC car battery, which remains in a charger, plugged into my inverter so that it is charged when the inverter comes on.
    All the 12 volts stuff will be powered by a cheap gell cell battery, so that if my battery is stolen, it will still work.
    I forgot to add my hood light onto the diagram, but its not hard to see where it goes.
    If the trunk, glove box (possibly looking for money?) or dome lights come on, the siren automatically goes off, if the first stage of the sensors are set off, the car will give a verbal warning with a cheap 80 watt amp I have and a small speaker "Get yo *** back from the car" or something of similar nature. When the second stage of the sensors is set off, the siren beeps twice, as a warning. If they are set off again within a set time, say 30 seconds, they go on for a full 30 seconds. If any of the lights come on, the verbal warning is issued, then the siren automatically goes off for 20 seconds, then the verbal warning, then the siren, for 2 intervals.

    I haven't played much with the sensors, but they are rather sensitive, the Radar claims to detect movement with 30 feet. They are "Bull dog security" Brand. I want to set them so that stage one is getting within a foot or so off the windowshield or leaning on the car, and stage 2 is actually getting in the car, or violently shaking or hitting it.
    The UHF reciever/remote parts I assembled myself from some do it yourself kits, the remote actually had a key chain case that came with it.

    The Piezo siren is 120 db, I got it from partsexpress at there store in Dayton, Ohio.
    BTW, the guys there are incompetent, don't even ask for help. My guy kept walking off to eat pizza in the back room.
    THe siren is painfully loud, I have to be very careful when working with it, when it is on it brings you almost to your knees (I am not kidding, you don't hear it, you hear it inside your head) and my cat gets ****ed at me and leaves the room usually too ;-)

    I decided to use wire on the circuit boards because I am making the PCBs myself, and decided that to use actual copper traces between everything would be to difficult and not worth the time and complexity involved to make a double sided PCB.

    So, if anyone can give some pointers, it would be great, thanks.

    BMP one
    BMP two

    [ 12-07-2001: Message edited by: lstrunk ]
    PIECE OF CRAP geocities.
    Anyone wanna do me a favor and post them somewhere?
    I can't link to pictures for some reason
    And I don't have my server running FTP so I could upload them real easy.

    [ 12-07-2001: Message edited by: lstrunk ]
    Clarion 200watt head unit w/ Aux in.
    Kicker 800watt 4 channel amp
    In a 96 Grand Prix SE.

  2. #2
    FLAC
    Join Date
    Jan 2001
    Posts
    1,612

    Post

    the pics:




    and use jpg's!

  3. #3
    Maximum Bitrate
    Join Date
    Mar 2001
    Location
    Cincinnati, Ohio
    Posts
    729

    Post

    Hey, thanks man,
    The only program I had on my machine to make those was paint, so I couldn't make them JPG.

    So, does anyone have some suggestions?
    Clarion 200watt head unit w/ Aux in.
    Kicker 800watt 4 channel amp
    In a 96 Grand Prix SE.

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