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do-it-yourself static 2dof dynamic conversion

Discussion in 'DIY Motion Simulator Projects' started by pfm21, Jun 17, 2020.

Page 3 of 6
  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Jul 27, 2020
    #41
  2. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    pfm21, Jul 27, 2020
    #42
  3. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    pfm21, Jul 27, 2020
    #43
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Ratings:
    +10,909 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Jul 28, 2020
    #44
  5. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    why are 25.1 and not 60?
    pfm21, Jul 28, 2020
    #45
  6. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    but you then changed the laps box? so these are not strong enough?
    pfm21, Jul 28, 2020
    #46
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Yes I changed the gearboxes to 60:1s on my compact rig.

    I started with 25:1s, don't get me wrong they will move a properly designed compact design rig OK, but got a bit warm with heavier users and as I mention could easily be back driven, the latter was an issue for my particular use.
    noorbeast, Jul 28, 2020
    #47
  8. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    ok so I can take them safely?
    pfm21, Jul 28, 2020
    #48
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Yes 25:1s will work on a compact design, but give them the maximum design leverage you can, use sensible CTC for levers, as torque is more important than speed on a compact rig, and minimize the mass where possible.
    • Like Like x 1
    noorbeast, Jul 28, 2020
    #49
  10. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    but if i also wanted to add the third motor for the traction loss can i use this scheme by connecting only the 3 motor? thanks

    Attached Files:

    • Like Like x 1
    pfm21, Jul 31, 2020
    #50
  11. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    I would like to do something like this because it is a great job

    Attached Files:

    • 1.jpg
      1.jpg
      File size:
      232.3 KB
      Views:
      288
    • 2.jpg
      2.jpg
      File size:
      319.5 KB
      Views:
      300
    pfm21, Jul 31, 2020
    #51
  12. pfm21

    pfm21 pfm21 build 3dof dinamic

    Joined:
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    thanks to @diegocom for the excellent work he has shown
    pfm21, Jul 31, 2020
    #52
  13. pfm21

    pfm21 pfm21 build 3dof dinamic

    Joined:
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    Balance:
    356Coins
    Ratings:
    +34 / 0 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    but if i also wanted to add the third motor for the traction loss can i use this scheme by connecting only the 3 motor? thanks

    Attached Files:

    pfm21, Aug 2, 2020
    #53
  14. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    somebody help me. I have problems with the motors or when I try to push them down they deactivate and do not return to the central position. making the motors move in hand with Smc3 do their job. also in the central position they jump a bit. who gives me some indication to solve? in fact when seated, if you lean too far forward with your body weight, they do not return to the center. I am attaching the videos to better understand

    pfm21, Aug 28, 2020
    #54
  15. pfm21

    pfm21 pfm21 build 3dof dinamic

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    this is my 3dof with traction loss. help me fof my problem. thanks

    Attached Files:

    pfm21, Aug 28, 2020
    #55
  16. pfm21

    pfm21 pfm21 build 3dof dinamic

    Joined:
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    when I press hard on the engine he disconnects and doesn't return to the position anyways. I see the yellow line which should be the engine. come posso risolvere

    pfm21, Aug 28, 2020
    #56
  17. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
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    Ratings:
    +10,909 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Are you pushing past the SMC3 boundary limits, as it will disable if you do that.
    noorbeast, Aug 29, 2020
    #57
  18. pfm21

    pfm21 pfm21 build 3dof dinamic

    Joined:
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    but you say it's normal? i also tried without opening smc3 and it does the same thing. I'm afraid what happens when I put on the seat and sit on it.
    pfm21, Aug 29, 2020
    #58
  19. pfm21

    pfm21 pfm21 build 3dof dinamic

    Joined:
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    nothing to do I tried with the seat on and as soon as the weight of the body shifts and I risk falling and the kotori do not manage to rest in the center position. maybe the distance of the motors from the center is wrong and they don't make it?
    pfm21, Aug 29, 2020
    #59
  20. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
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    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,640Coins
    Ratings:
    +10,909 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    I suspect part of the issue is that you look to have a compact design with limited design leverage, which requires lots of torque, but are using what looks to be very long CTC levers.

    What is the gear ratio?
    noorbeast, Aug 29, 2020
    #60
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