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Reversing switches

Discussion in 'General Electronics Discussion' started by mikemwa, Jan 14, 2012.

  1. mikemwa

    mikemwa

    4
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    Jan 14, 2012
    I have a string on 2 pullies with a stop attached to it. There are 2 switches or some kind of sensors in the path. There is a gear motor attached to one pulley. I want to push the button and the stop will travel to one switch then stop. When the button is pressed again I want the stop to go to the other switch and then stop and so on. How would I wire something like this up?

    I have attached a simple file of what I'm trying to do.
     

    Attached Files:

  2. GonzoEngineer

    GonzoEngineer

    321
    0
    Dec 2, 2011
    First, you have to pick out the motor, what are the voltage/current requirements?

    How is the motor wired?

    We need a bit more info before we can help you.
     
  3. mikemwa

    mikemwa

    4
    0
    Jan 14, 2012
    The motor I have is 2 to 6 volts DC and is a geared motor. Any other info needed?
     
  4. BobK

    BobK

    7,645
    1,662
    Jan 5, 2010
    If you want a single pushbutton (momentary contact) switch to reverse the motor you will need some logic and power transistors or relays. If you used a toggle switch (dpdt) you can do it all with switches.

    If you can find a latching pushbutton dpdt switch, this could also work with no electonics.

    The idea is feed the + and - power into the center terminals of the dpdt switch. Then the outer terminals are fed to the motor, with one set rerversed and the other straight though (+ to + - to -). The + side of each power connection to the motor should go though the normally closed limit switch.

    Bob
     
    Last edited: Jan 16, 2012
  5. BobK

    BobK

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    1,662
    Jan 5, 2010
  6. mikemwa

    mikemwa

    4
    0
    Jan 14, 2012
    Oops. I forgot to mention that I was thinking of using micro switches if that makes a difference. Just whatever makes it simple for now.
     
  7. mikemwa

    mikemwa

    4
    0
    Jan 14, 2012
    Does anyone have any ideas?
     
  8. BobK

    BobK

    7,645
    1,662
    Jan 5, 2010
    No, no ideas. That is why I wasted my time telling you how to wire it and what kind of switch you could use.

    Bob
     
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