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Open door alarm to help avoid cracking your head

Discussion in 'General Electronics Discussion' started by Ron Daves, Sep 30, 2016.

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  1. Ron Daves

    Ron Daves

    4
    0
    Sep 30, 2016
    My wife has cracked her head on our kitchen cupboard doors a number of times. I decided to install an alarm that nags her when she leaves one of those darned doors open. So I sent away for Magnetic sensors for the doors, a multi-functional time delay relay and I had a buzzer. After all the stuff arrived, I tapped into a 12 volt source and wired all this stuff up.

    The Multi-functional time delay relay is made in America. It can be programmed to delay turning something on or off, or it can be programmed using a trigger event. It can also make things flash. There are 19 different programming modes for this little device. Costs less than $20 and can be found on EBay.
    It's a little bigger than a postage stamp and has several wires coming out of it for the purpose of controlling voltage events.
    Find this device at: http://www.3rdbrakeflasher.com/timer-c-68/
     

    Attached Files:

  2. HellasTechn

    HellasTechn

    1,542
    214
    Apr 14, 2013
    So was your project successful ?
     
  3. Ron Daves

    Ron Daves

    4
    0
    Sep 30, 2016
    Yes. The cupboard sounds off after a 5-second delay and my wife is now trained to open and close those doors quickly. No more head injuries.
     
  4. Kiwi

    Kiwi

    335
    83
    Jan 28, 2013
    I need those for my wife. Too busy "multitasking" to finish one task before starting the next. :D
    Hope she never sees this!
     
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