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Question 4DOF : co-planarity ?

Discussion in 'SimTools Pro & Entertainment Version' started by vthinsel, Dec 19, 2023.

  1. vthinsel

    vthinsel Well-Known Member

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    My Motion Simulator:
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    Hello !

    I'm about to move to a 4DOF (traction loss will come later) and I was wondering how co-planarity could be ensured. Let me explain briefly: with 4 DOF, all actuators need to move in way that the rig remains a plane: we do not want to twist the rig, and make too much efforts of the actuators. Can simtools enforce this in some way ? I could add basic calculation on arduino just based on Z of all actuators, but it would probably be more accurate/faster on simtools.
    Thanks !
    vthinsel, Dec 19, 2023
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Could you please post a sketch of what design is intended that gives the 4DOF.
    noorbeast, Dec 19, 2023
    #2
  3. vthinsel

    vthinsel Well-Known Member

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    Sure. It will be an sfx-100 based rig, but using 220mm stroke (SRT-80 actually):
    Diablo2112's 4-axis SFX-100 build (xsimulator.net)
    When the four actuators will be attached to a bottom frame for traction loss, we must ensure they are coplanar. I have some arduino code almost ready, just for fun and safety of the actuator/rig
    Last edited: Dec 20, 2023
    vthinsel, Dec 20, 2023
    #3
  4. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    As long as you run them all from the same controller, you will not have any problems.
    I have seen it work even when multiple controllers are used also, but one controller is safer because if it has a problem, all axis stop.

    I'm also thinking of adding an option to stop all output if any connected interface reports an error. (As it would be safer for these kinds of sims when running multiple controllers.)
    Take care!
    • Like Like x 1
    yobuddy, Dec 21, 2023
    #4
  5. Mycroft

    Mycroft New Member

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    That would be great!
    I'm using a prosimu 5M platform with 2 controllers, and I regularly have 1 controller that fails while the other continues to work
    Mycroft, Jun 10, 2024
    #5