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Bruce's 2dof fullframe rig aka: the "Ratrod"

Discussion in 'DIY Motion Simulator Projects' started by bruce stephen, Jun 8, 2015.

Page 1 of 7
  1. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

    Joined:
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    general contractor
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    +1,243 / 9 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    This will be my first crack at a motion rig. 2dof to start then we'll see from there. I found a ton of info and resources so far. Decided to go arduino and mm. Might try jrk on next one but getting way ahead of myself for now. So I have mm's, pots, ard board, on the way and will post some picks as soon as my UGLY SKETCHES become reality. Probably gonna use a steering knuckle for the gimbal. Enough for now but I am so excited. I have seen some really nice stuff here. I feel like such a rookie. Thank you in advance for the time and passion you have all invested. The hard work has been done all I have to do is pay attention and it should come together. It's just so overwhelming there is so much information here. And like with many things it's seems there are a hundred ways to get it done.

    build parts link https://www.dropbox.com/s/i5v964o0mpihdqw/supplies_links.txt?dl=0
    • Like Like x 3
    Last edited: Apr 4, 2016
    bruce stephen, Jun 8, 2015
    #1
  2. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    bruce stephen, Jun 8, 2015
    #2
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Ratings:
    +11,017 / 55 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    An ugly sketch is fine, all you need is a clear idea of what you want to achieve and utilise the abundant Xsimulator.net resources and community support.
    noorbeast, Jun 8, 2015
    #3
  4. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    quick question.....

    I ordered regular pots but also saw hall sensors used. What about using rotary encoders, do they work for this application also?
    bruce stephen, Jun 8, 2015
    #4
  5. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    To get rotary encoders to work, you would have to include some code to count/decode the pulses and burn up processor resources, plus include a startup routine and end micro switches to find the center. They are not worth the effort, when a normal pot or hall effect sensor will work just as well out of the box for most sim application.
    • Agree Agree x 1
    • Useful Useful x 1
    SeatTime, Jun 8, 2015
    #5
  6. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    Ok Ty. Pots for now then.
    bruce stephen, Jun 8, 2015
    #6
  7. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    bruce stephen, Jun 12, 2015
    #7
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Ratings:
    +11,017 / 55 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Jun 12, 2015
    #8
  9. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    smc3, full frame, shoulder mount.
    bruce stephen, Jun 12, 2015
    #9
  10. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

    Joined:
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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    bruce stephen, Jun 12, 2015
    #10
  11. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

    Joined:
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    +1,243 / 9 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    hmmm. these are s2 15min rated i hope this wont affect the build. ill have to think of a way to keep them cool.
    bruce stephen, Jun 12, 2015
    #11
  12. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    finally started building the bottom frame. got motors and psu's situated. tommorow ill work on pots. waiting for electronics from china so I have a minute. 20150616_181718.jpg 20150616_201128.jpg 20150617_100832.jpg 20150617_124533.jpg 20150617_124608.jpg 20150617_150212.jpg
    • Like Like x 6
    bruce stephen, Jun 17, 2015
    #12
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    You were going to post a rough sketch, I am curious what the dimensions are and how the motors connect to the seat.
    noorbeast, Jun 18, 2015
    #13
  14. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

    Joined:
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    Occupation:
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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    those are top secret i would show them to you but u know...........

    the base mearures 24in 61cm x 33in 84cm
    post top is 15in or 38cm up from base
    22in 56cm from motor shaft to motor shaft
    27in 68.5cm from motor shaft to post
    motors are 276 watts each
    psu are 50 amps each


    hopes this helps i'd give more info but don't rteally have some of the design decisions made yet.
    bruce stephen, Jun 18, 2015
    #14
  15. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    ok painted and did a few small things got a pot hooked up. got pots and ard to show in smc3. Waiting for motos 6/9. and my 5/8" keyway collars for the levers 6/14.
    20150619_095336.jpg 20150619_114914_LLS.jpg 20150620_173727_LLS.jpg 20150619_120000_LLS.jpg
    bruce stephen, Jun 21, 2015
    #15
  16. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Balance:
    150,578Coins
    Ratings:
    +11,017 / 55 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Please don't let a misunderstanding derail your project.

    I understand you made a joke but unfortunately it could be misread when sensitivities regarding undisclosed commercial interests are somewhat high at the moment. That is not yous or others fault, it is just unfortunate timing.
    noorbeast, Jun 21, 2015
    #16
  17. André Vasconcelos

    André Vasconcelos Member

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    My Motion Simulator:
    2DOF, AC motor, Arduino, SimforceGT
    It seems to be very good!
    • Like Like x 1
    André Vasconcelos, Jun 21, 2015
    #17
  18. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    ty Andre I'll post as I build.

    and just for clarification I do not have drawings. If i did I would share. I may use the static rig i referenced (will post properly below) in my first post but it is really heavy and twists. its the first thing I ever welded, only 2 months ago. plus the seat is from a saturn (kinda heavy with useless slider) and i think if i save i can get something cooler. I don't know how to make keyway 5/8" so i ordered. the lever arms will be steel bar welded on. not sure on angle and will try to match suggested. I think the arms will come from the back of the motor. I'm not much on the math side so sorry for the lack of pre planning. I'm just building and trying to read as much as possible.
    Last edited: Jun 22, 2015
    bruce stephen, Jun 21, 2015
    #18
  19. André Vasconcelos

    André Vasconcelos Member

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    My Motion Simulator:
    2DOF, AC motor, Arduino, SimforceGT
    Ok'm waiting, seems very good
    André Vasconcelos, Jun 21, 2015
    #19
  20. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

    Joined:
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    Occupation:
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    Location:
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    Balance:
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    Ratings:
    +1,243 / 9 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    20150525_095104_LLS.jpg

    Attached Files:

    bruce stephen, Jun 22, 2015
    #20
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