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Showroom Finally Building My Motion Simulator - 2DOF to 3DOF

Discussion in 'DIY Motion Simulator Projects' started by Dropkicks17, Dec 20, 2022.

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  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    First try and determine why it shuts off, is it a USB disconnect (usually sound notification), PSU shutdown (check if PSU running), control board or motors over heating, or out of range?
    noorbeast, Jan 31, 2023
    #21
  2. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    OK, so it's not the USB or PSU. I took a screen shot of SMC3 while I was able to replicate the issue. This is what happens when I weigh down motor 2 (by leaning on the front corner with my weight, haha).
    [​IMG]
    Dropkicks17, Jan 31, 2023
    #22
  3. RGS-Furtwangen

    RGS-Furtwangen New Member

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    My Motion Simulator:
    2DOF, Arduino
    In our case, the H-bridge was defective and I think our fault looked the same.
    RGS-Furtwangen, Jan 31, 2023
    #23
  4. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    Thanks RGS, I appreciate the response. Is there a definitive test to point to that?
    Dropkicks17, Jan 31, 2023
    #24
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    This could be hardware, design or a combination of both.

    If you switch the hardware does the issue follow or not?

    What CTC are you using on the levers, given you rig has significant mass and constrained inherent design leverage, and are the levers at right angles to the rods when the rig is in its level position:
    [​IMG]
    noorbeast, Jan 31, 2023
    #25
  6. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    CTC is 3 inches. I was thinking of switching the hardware to test that out, but I think I had the same problem with motor 1 at some point during testing too. The levers are at right angles when the rig is level. The photo above shows it when the system is off and at it's resting place. That it below the lower end of the range when the rig is in motion.
    Dropkicks17, Jan 31, 2023
    #26
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Try the CTC at 50mm and see if the issue persists.
    noorbeast, Jan 31, 2023
    #27
  8. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    Yes, that worked! I was actually at 100 mm before. I dropped it down to 63.5 (I already had holes drilled for that length) and it handled it. Do you think I can go a little further to get a little more movement? I'll probably end up trying it at 75 and 90 mm at some point anyway.
    Dropkicks17, Feb 1, 2023
    #28
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    How far you can push the CTC depends on lots of things, how well SMC3 is configured for the hardware, the inertia of the rotating mass, and simple physics, for example once a lever moves more than about 38-40 degrees either way its effective use of torque drops dramatically.
    noorbeast, Feb 1, 2023
    #29
  10. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    I tried it at 90 mm. It was going great until I lost control in an F1 car and got thrown around. That caused the shut down again so I'll try 75 next. I won't get a chance to drill holes and test that for a couple of days.
    Dropkicks17, Feb 1, 2023
    #30
  11. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    Tested it with 75mm CTC holes and it worked great. Now I can dial in my settings to get it just right. It's so fun to use it the way it is now though, it's hard to stop to change things, haha. Thanks for all your help @noorbeast!
    • Winner Winner x 1
    Dropkicks17, Feb 2, 2023
    #31
  12. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
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    Innovative tech specialist for NGOs
    Location:
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    Balance:
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    Ratings:
    +10,778 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Well done working out what best suits your rig and needs :thumbs

    No pressure, but when you get time I and others would really appreciate a video of your rig in action!
    noorbeast, Feb 2, 2023
    #32
  13. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    I'll definitely be adding a video(s) soon! Gotta pay it forward :)
    • Winner Winner x 1
    Dropkicks17, Feb 2, 2023
    #33
  14. RGS-Furtwangen

    RGS-Furtwangen New Member

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    My Motion Simulator:
    2DOF, Arduino
    Measure voltage with a multimeter at the output of the H-bridge
    RGS-Furtwangen, Feb 2, 2023
    #34
  15. Dropkicks17

    Dropkicks17 Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    Here are some videos. I can't believe I actually have a racing simulator in my house that I built! It is so much fun!!!

    Here's my son trying Assetto Corsa:


    My son still trying Assetto Corsa:


    My son trying out NoLimits2 Roller Coaster Simulator:
    • Winner Winner x 1
    Dropkicks17, Feb 5, 2023
    #35
  16. Dropkicks17

    Dropkicks17 Member

    Joined:
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    Thanks! It's very rigid which helps when it's moving all around.
    Dropkicks17, Apr 28, 2023
    #36
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