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alarm with infrared remote

Discussion in 'Electronic Projects' started by cyb0rg777, Mar 31, 2007.

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  1. cyb0rg777

    cyb0rg777 New Member

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    I built this circuit recently and decided to do a rough schematic and post it here.It is a car alarm.You need to mount the sensor and led where they are visible from a window .I made the transmitter out of smt parts and mounted it in a keychain led flashlight.when you turn it on the led comes on and it waits for a signal from the sensors .If it gets a signal from a sensor it turns on a relay which I'm connecting to my horn.You have to have line of sight and be pretty close to control it .

    Could anyone suggest some sensors?

    I made my own vibration sensor.
    I took a piece of a retractable radio antenna and hooked it to one lead.
    I hooked the other lead to a nail hung in the center of the antenna tube.
    then I hung the whole thing so that if you park on a hill it will lean .
    Sort of a wind chime crossed with a bell.
    I had to use really fine motor wire with thread to support the weight.
    What would be awesome is If the whole vehicle body was made into a proximity sensor.

    Here is the ROUGH drawing of the schematics and the .asm files.

    And thanks to Nigel for showing me how to do the infrared stuff :)
    There are some connections not showing such as power and a 5v regulator but you get the idea. Don't forget when you build the transmitter the button cells have a positive shell . I assumed it was negative now I'm trying to get them in backwards.
     

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  2. sockeye101

    sockeye101 New Member

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    as for a sensor use a laser pointer and a photocell as the sensor
     
  3. cyb0rg777

    cyb0rg777 New Member

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    Thanks for your idea.

    I saw some laser pointers at the local dollar store for $1.
    I even noticed the plastic box would make a good project box.
    I see you're new so I'll say welcome to the forum.

    That's what I like about the internet, people trading ideas.

    Just so this post isn't completely useless I would like to mention that the transmitter by itself would make a good trick remote .You could turn off all those annoying T.V.s at the stores.

    That's why I used linux lirc detector to add mute and power to the code list I got from Nigel.
    You can use a universal remote and record the signal for different model of T.V. ,then figure out how to recreate it.
    This was my first time etching a circuit with peroxide+hydrochloric. It worked great
     
    Last edited: May 7, 2007
  4. dave

    Dave New Member

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  5. Sceadwian

    Sceadwian Banned

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    Actually, the Internet is about war =)
    It started out as a DARPA project for transfering information for intercepting incoming bomber information and was funded by the governement as a fault tollerant network. Everything that came after was a 'well what else can we make it do' sort of thing. Kind of like the modern day Internet, which explains why there's so much crap.
     
  6. cyb0rg777

    cyb0rg777 New Member

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