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Momantary, non stopping rotary switch

Discussion in 'Power Electronics' started by TheLemur, Mar 8, 2018.

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  1. TheLemur


    Mar 8, 2018
    Hi guys,

    Seems like you're all friendly here from the other posts I've read, hopefully you can help me out.

    TL; DR at the bottom.

    I've built an Arduino powered macro keyboard, it has a few buttons on it which when pressed send a key command to my pc which are then intercepted and processed by autohotkey.

    I want to add a volume knob to this setup but can't find the correct type. It should be like a button in terms of its output, as in each click in one direction is a button push, and each click in the other direction is a different button push. Ideally when not being turned it's grounded, however that isn't necessary.

    The main requirements are:
    - Each turn in one direction has the exact same output no matter how many times it has been turned.
    - there's no limit to how many times it can turn (like there is with a pot).
    - Turns both ways, each having a separate output.

    The reasoning for this method over a pot, is that the pc volume could vary from what the pot's value represents on plugging in, either resulting in limited adjustment or a sudden volume change, neither are nice results.

    I know such a switch is out there, as it is in use on my radio, but finding one online has proved tougher than I imagined, likely since I don't know what it's called.

    TL;Dr: Rotating switch, like a potentiometer, except each click of the knob sends out a signal as if it were a button.
  2. Minder


    Apr 24, 2015
    Sounds something like a rotary wafer switch with the stop removed, these come with as many wafer segments you need and rotary positions.
  3. kellys_eye


    Jun 25, 2010
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