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  • EEVblog #191 – Mouse Trap Triggering

    Posted on August 1st, 2011 EEVblog 10 comments


    What’s the easiest way to electronically trigger a mouse trap? Dave has an idea… Just don’t ask why, OK, Dave doesn’t know either…

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    10 responses to “EEVblog #191 – Mouse Trap Triggering” RSS icon

    • Another, more elegant, solution would be to catch your house mice first, mark them with RFID tags and release them again (very sporty, isn’t it?). Then, all it takes is use a simple RFID reader to activate the trap. Additional bonus: you don’t catch your neighbor’s mice or other rodent whatsoever.
      It’s more elaborate method than the heating resistor approach, but could easily lead to a 1,5 hours EEVblog!!
      Nevertheless, great idea and nice tutorial. I wonder if anyone has ever looked at the humble resistor’s datasheet before.

    • dave, I did some work with graphite It works great as an ignter….. there are many different sizes. I had some luck useing them as resistors just thought i would throw that in´╗┐ there

    • Ahaha, even the end credits got fed up with Dave’s babbling.

      “I just wanted to show some things on resistors… AAAND CUT!”

    • Hehehe, good one Dave! Totally reminds me of my first experiments with electronics 15 years ago when I built a time fuse for firecrackers! I used copper-constantan wire, which could be wound easily around the fuse of the cracker, instead of a resistor.
      Needless to mention that the actual timer was based on the humble 555. All slapped together in a tiny tin can, BIG FUN!

    • Man, sounds like someone’s asking Dave for help for their homework…

    • A solenoid based approach would make “reload” a much simpler operation. Which may or may not matter… There used to be a board we sold that was laid out to have a series of resistor-sized fuses between the board and some cable-connected daughtercard. We discovered that using small-values resistors instead of the (expensive!) fuses resulted in an additional feature – you could smell them burning after an overcurrent event; a sort of “olfactory failure indicator”…

    • BTW, this has particular application to spring (or rubber) powered, electronicaly triggered parachute ejection for water, model, and amateur rockets. To increase your comfort level, you can one of the low-melting-point, extra-high-strength polymers for the string (ie “Spectra”) Watch your knots, though. When you’re on the wrong side of a powerful spring is a bad time to notice that polymer string is “slippery.”

    • You gotta be shittin’ me.
      I’m sorry Dave but your blog is no good anymore :D

    • Shape memory alloys would make a good resetable electronic trigger…

      http://www.musclewires.com/

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