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Wireless reed switch

Discussion in 'General Electronics Discussion' started by arjfca, Sep 12, 2013.

  1. arjfca

    arjfca

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    Sep 12, 2013
    Hello

    First post on the forum

    I'm looking for an idea on witch wireless device I could use to read the opening of a door. My actual installation use a reed switch with a magnet and it is link using a wire. The switch is normally open and when the door is open, it goes to close position.

    The distance is less the a meter ( 3 feet)

    I'm looking for an inexpensive and easy to use solution

    Any idea?

    Martin
    Montreal Canada
     
    Last edited: Sep 12, 2013
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Buy a remote doorbell (using radio technology). Connect the reed switch in parallel to the sender's button. Voilá.
     
  3. arjfca

    arjfca

    2
    0
    Sep 12, 2013
    Hello Haralk

    I know I could do that, but the goal fun is to create it.

    Martin :)
     
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Make an LED light up when the door is open. Use a PC and a webcam to detect the light from the LED.
     
  5. BobK

    BobK

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    Jan 5, 2010
    No, that is too simple Harald.

    The reed switch operates a solenoid.
    The solenoid releases a 1 inch ball bearing that runs down a spiral track.
    It Then falls into a cup at the end of a 1 m long lever
    The lever, through gearing runs a fan.
    The fan provides wind to move a model sailboat across of trough filled with water.
    When the sailboat reaches the other side, the trough is unbalanced and tips, so the water spills out.
    The water runs through a small hyrdro-electric generator.
    The generator powers an animatronic monkey, who waves a flag, signalling that the door has opened.

    Bob
     
    Last edited: Sep 13, 2013
  6. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Greetings from Rube-Goldberg.

    You're absolutely right. How could I post such a primitive solution ?;)
     
  7. Harald Kapp

    Harald Kapp Moderator Moderator

    9,395
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    Nov 17, 2011
    @arjfca:
    Pardon our jokes, we too need to relax from time to time.

    Honestly: what is wrong with the simple solution? It's inexpensive and easy, just what you had asked for.
    If you want to "create" something by yourself, what is your background? Do you have any experience in electronics? Do you have any experience in hf-design?
    Look for an RF remote control kit at the electronics shop of your choice. A kit will make it much easier for you to get started.
     
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