Basic Stamp alarm

I'm working on an alarm using the BS2. It will sense a beam of IR across a doorway
and if that beam is broken, the BS2 will emit a 4000 Hz tone for 1 second.
bugg devil.gif

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So many projects, so little time.

Comments

  • 17 Comments sorted by Votes Date Added
  • edited January 2005 Posts: 689Vote Up0Vote Down
    Note: you MUST read the text.
    bugg

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    So many projects, so little time.
  • edited January 2005 Posts: 0Vote Up0Vote Down
    You might consider using the PIN definition to make the program easier to update or incorporate into other projects.

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    Jon Williams
    Applications Engineer, Parallax
    Dallas, TX· USA
  • edited January 2005 Posts: 689Vote Up0Vote Down
    Thank you, Jon!
    bugg scool.gif

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    So many projects, so little time.
  • edited January 2005 Posts: 689Vote Up0Vote Down
    Guys, I made a revised version of the original software.
    The Tx is a 74LS04 osillator circuit.

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    So many projects, so little time.
  • edited March 2005 Posts: 689Vote Up0Vote Down
    OK, I did it again. It works beter now!
    bugg

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  • edited June 2005 Posts: 0Vote Up0Vote Down
    I tried the same thing, except that I used a laser pointer running off of a AC/DC power supply, and a·photoresistor to detect if the beam was interrupted.· When it· was it set off an alarm that didn’t turn off.·

    tongue.gif··

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    the NERD, Kelie B.


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    ·
    · If electricty comes from electrons, does morality come from morons?
  • edited June 2005 Posts: 689Vote Up0Vote Down
    Thats the point! Just press the reset button.
    bugg

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    Boe-bot: $229


    Toddler: $249

    Learning Google is your friend: priceless
  • edited July 2005 Posts: 0Vote Up0Vote Down
    i would like to do this can i do it with the boe bot board of education
  • edited July 2005 Posts: 689Vote Up0Vote Down
    Yes you can.
    bugg

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    Boe-bot: $229


    Toddler: $249

    Learning Google is your friend: priceless
  • edited August 2005 Posts: 0Vote Up0Vote Down
    I had actually tried this once, but instead of using a tube to focus the IR led I used an old camera lens.blush.gif

    This significantly increased the accuracy of the beam.freaked.gif
  • edited August 2005 Posts: 689Vote Up0Vote Down
    I have posted a schematic of the project.

    bugg

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  • edited August 2005 Posts: 0Vote Up0Vote Down
    Hi gyes.This is my first time in this forum.I found it excellent.I am from greece .So ,my english are not very good.I would like to ask if we can use 2 ir leds in alarm.What do you think?THen the alarm will be better .in addition i have a circuit than can make the piezospeaker stronger.
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  • edited August 2005 Posts: 0Vote Up0Vote Down
    Robby, you can use up to 7 IR pairs (LEDS - DETECTORS) or up to 15 simple photointerupters detectors to armor all over your place if you like!!

    The only problem I see is all the wiring along the house making your wife go crazy!!! lol.gif
    ·
  • edited August 2005 Posts: 0Vote Up0Vote Down
    Robby,

    If you want to increase the volume of a "raw piezo" (i.e no internal piezo circuitry), then
    see my reply in the "Stamps in Class" section several months ago about amplifying a piezo speaker.

    http://forums.parallax.com/showthread.php?p=464410



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    Beau Schwabe

    IC Layout Engineer
    Parallax, Inc.
    "Irony hides in the deception of your current view of the situation" - Me ....
    In other words, do not believe what you are told and what you immediately perceive until you find out the absolute truth for yourself from all possible angles.

    www.Kit-Start.com
    bschwabe@Kit-Start.com

    www.BScircuitDesigns.com
    icbeau@bscircuitdesigns.com
  • edited August 2005 Posts: 0Vote Up0Vote Down
    I hadnt thought of this.we can put more than 2 ir leds.so ,thanks for the help on amplifying.In addition we can put a microphone and other sensors.the only thing we've to do is·to make the suitable programm.

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  • edited August 2005 Posts: 689Vote Up0Vote Down
    I have also posted a SX version.
    bugg

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    Boe-bot: $229


    Toddler: $249

    Learning Google is your friend: priceless
    2160 x 1660 - 25K
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