Does anyone know if something like this exists?

Discussion in 'The Projects Forum' started by patrick99e99, Sep 2, 2013.

  1. patrick99e99

    Thread Starter New Member

    Aug 19, 2013
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    target_bank.jpg

    So this is a drop target bank... The four black plastic rectangles have springs attached to the bottom, and when they are raised up, they hook to the ledge (the black long plastic piece at the top with the 5 screws on it).

    I am brainstorming, looking for a way that I can cause a target to fall down through electronics........ I am imagining some kind of miniature coil, that is be somewhat flat, until current goes to it-- and then it would raise up a tiny amount (1/8" or something), and that would cause the target to get pushed off the ledge, so it can fall down.

    I was originally looking for tiny solenoids, but all of those were too big to fit on this--- So I just thought I'd ask here if anyone knows off the top of their head something that could be used to accomplish this?

    Thanks!
     
  2. #12

    Expert

    Nov 30, 2010
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    I read something about really tiny fans. Not rotational, more like flapping a bird wing. Searching my memory, not getting much. Maybe a piezo element with a lever...
     
    Last edited: Sep 2, 2013
  3. tracecom

    AAC Fanatic!

    Apr 16, 2010
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  4. John P

    AAC Fanatic!

    Oct 14, 2008
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    Simply passing a current through a wire, to cause it to heat up and stretch?
     
  5. #12

    Expert

    Nov 30, 2010
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    Is muscle wire repeatable? (keep repeating the same motion just because electricity is applied?)

    Never mind. I just found the reference.
     
  6. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    That's my understanding, but I don't have any first hand experience. Maybe I should order some; looks like fun stuff.
     
  7. Sensacell

    Well-Known Member

    Jun 19, 2012
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  8. #12

    Expert

    Nov 30, 2010
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    It might be good enough for an eighth of an inch...
     
  9. Metalmann

    Active Member

    Dec 8, 2012
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    Usually, metal expands when heated.?
     
  10. #12

    Expert

    Nov 30, 2010
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    The "trick" about muscle wire is that it resumes a previously applied shape when heated.
     
    Metalmann likes this.
  11. sirch2

    Well-Known Member

    Jan 21, 2013
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    A Piezoelectric actuator?
     
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