Creating a mechanism

Discussion in 'General Electronics Chat' started by Elgauly, Oct 8, 2014.

  1. Elgauly

    Thread Starter New Member

    Oct 8, 2014
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    Hello guys,
    I'm trying to figure out how to make a device that whenever I send an electric pulse a pin pops out of the device and after I send two pulses the pin returns, its pretty simple I think.
    I hope you guys could answer my question.

    Thanks.
     
  2. Elgauly

    Thread Starter New Member

    Oct 8, 2014
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  3. b1u3sf4n09

    Member

    May 23, 2014
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    When you say pin, do you mean a solenoid valve? http://en.wikipedia.org/wiki/Solenoid_valve
    Solenoid valves usually require a sustained current to keep the valve open.

    What do you mean by pulse? A 5V, 1 ms square wave? 8 ms Half wave power?

    Is the pin used for display purposes? Is it actuating an external device?
     
    Last edited: Oct 8, 2014
  4. Elgauly

    Thread Starter New Member

    Oct 8, 2014
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    Thanks, I have started reading about solenoids because it's what I was looking for.
     
  5. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
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    Look at model railroad solenoid switch machines. They combine two solenoid coils back to back, which would give you your pin out and pin in motion. This is one, that with a little bending and/or extension might work.
    PPCPL10E-250.jpg
    The electronics for the control by one or two pulses (do you mean two pulses or a pulse to pop the pin out and a second pulse to retract it?) can be done with a flip flop for example (in the latter case).

    In any event, the control electronics depend on the mechanical device used to move the pin.

    By the way, how strong, big, etc... is this pin? Is it supporting a heavy weight or something light?
     
  6. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    A latch might be easier, one pulse up and next pulse down.
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,570
    2,381
    Magnetic latch solenoid, you only need one single pulse to energize and to retract.
    Digikey sell them.
    Max.
     
    Last edited: Oct 9, 2014
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