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Yoder's Rift-minded 2/3 DOF racing sim

Discussion in 'DIY Motion Simulator Projects' started by Yoder_, Sep 8, 2014.

  1. Yoder_

    Yoder_ New Member

    Joined:
    Jul 5, 2014
    Messages:
    28
    Occupation:
    IT Dude
    Location:
    Oklahoma, USA
    Balance:
    400Coins
    Ratings:
    +9 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    Hey everyone. I'm in the planning phase of my first sim. I'm going for a full frame setup, with no monitor mounted since it's intended for HMD use. Having owned the DK1, I can say that sim racing is on a whole other level in VR. There's no going back to a monitor (for me at least).

    I'm trying to keep my costs down, while using mostly off the shelf components. I'm pretty comfortable with Arduino coding, h-bridges, and tuning PIDs, so I'm going to try to use my Arduino as the brains of the sim.

    For drivers, I plan on purchasing low cost H-bridge drivers, and using the Arduino for PID and serial string parsing from SimTools.

    Here's what I've got so far in SketchUp:

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    Any advice (or coin donations) is welcome!
    Yoder_, Sep 8, 2014
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    • Agree Agree x 1
    • Informative Informative x 1
    noorbeast, Sep 8, 2014
    #2
  3. bsft

    bsft

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    looks good, maybe make the foot motor mounts higher though.
    bsft, Sep 9, 2014
    #3
  4. Yoder_

    Yoder_ New Member

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    Occupation:
    IT Dude
    Location:
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    Ratings:
    +9 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    Yoder_, Sep 9, 2014
    #4
  5. 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:
    145,106Coins
    Ratings:
    +10,777 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Sep 9, 2014
    #5
  6. Yoder_

    Yoder_ New Member

    Joined:
    Jul 5, 2014
    Messages:
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    Occupation:
    IT Dude
    Location:
    Oklahoma, USA
    Balance:
    400Coins
    Ratings:
    +9 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    Sorry, I should have said:
    • Is it better than a foot mount for a full-frame?
    • What are the advantages/disadvantages?
    • Does it affect gearing choices?
    Yoder_, Sep 9, 2014
    #6
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
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    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    145,106Coins
    Ratings:
    +10,777 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Sep 9, 2014
    #7
  8. bsft

    bsft

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    Shoulder mount is best for overall weight movement but it means a longer frame and wider. Like the back being 850mm wide and extending back another 300-400mm from the seat at the back. I built a full frame shoulder mount for a mate a while ago, it was 850mm wide and 1.85m long.
    Foot mount is more compact, and mine has tossed 130kg driver around no problem. Mine was 1.3m long and 600 wide from memory
    Either doesnt really affect gearing choices as long as you are not planning more than 45mm CTC throw.
    Robs seat mover shoulder mount is 65mm CTC levers, but hes uses an actual small amount of throw of the levers. He is using the longer levers for speed. And being Seat mover, he is not moving a full human frame.
    Your frame is fine and will be good in action.
    bsft, Sep 9, 2014
    #8
  9. Yoder_

    Yoder_ New Member

    Joined:
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    Messages:
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    Occupation:
    IT Dude
    Location:
    Oklahoma, USA
    Balance:
    400Coins
    Ratings:
    +9 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    Thanks, that helps quite a bit. You bring up a good point; how much of the motors range should I use? +/- 30 degrees?
    Yoder_, Sep 9, 2014
    #9