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Obutto Revolution 2DOF + Traction Loss

Discussion in 'DIY Motion Simulator Projects' started by Brett Horton, Oct 25, 2016.

Page 2 of 6
  1. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    RGR thanks!
    Brett Horton, Nov 9, 2016
    #21
  2. Nick Moxley

    Nick Moxley Well-Known Member

    Joined:
    Dec 13, 2013
    Messages:
    2,779
    Occupation:
    Owner/Operator- Moxleys Rantals
    Location:
    Winnipeg Manitoba Canada
    Balance:
    17,054Coins
    Ratings:
    +2,504 / 30 / -2
    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    Look forward to seeing some building.....

    PS your PSU's aren't 1000w but rather 850w, seeing as your likely powering them off 110v.
    Nick Moxley, Nov 10, 2016
    #22
  3. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Correct on the PSU's
    The only concern I have at this point after seeing the rig in real life.... (drawn in CAD) Is will the whole rig be top heavy under extreme motion? What is the general consensus on width? I can add out riggers easily at this point, and anything else you guys might suggest.
    Here are pictures from today's build....
    20161110_151516.jpg

    Attached Files:

    • Like Like x 1
    Brett Horton, Nov 10, 2016
    #23
  4. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    The PSU's are working fine. Here is a picture of my solution for connectors AND bridging the top and bottom contacts.
    I put a slit in the XT90 connectors with a dremel and then soldered them onto the boards. Works like a champ and are good for 90 amp continuous.
    20161110_105206.jpg

    Attached Files:

    • Informative Informative x 1
    • Useful Useful x 1
    • Creative Creative x 1
    Brett Horton, Nov 10, 2016
    #24
  5. Nick Moxley

    Nick Moxley Well-Known Member

    Joined:
    Dec 13, 2013
    Messages:
    2,779
    Occupation:
    Owner/Operator- Moxleys Rantals
    Location:
    Winnipeg Manitoba Canada
    Balance:
    17,054Coins
    Ratings:
    +2,504 / 30 / -2
    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    I highly suggest more than just 2 castor wheels, 2 up front is a wise idea.. Also you'll want to widen your base frame as well. Check out @Avenga76 build....you'll see what i mean about a wider more supportive frame.
    • Winner Winner x 1
    Nick Moxley, Nov 11, 2016
    #25
  6. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Yep, I agree, I was in the middle of this all day... Getting close with the mechanical build portion...

    20161111_144757.jpg 20161111_144805.jpg
    • Like Like x 1
    Brett Horton, Nov 12, 2016
    #26
  7. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Still need to add a couple braces for the front casters, since these pictures, Iv'e added the seat universal stalk.
    Brett Horton, Nov 12, 2016
    #27
  8. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    I am to the point of deciding what CTC to use on my motors.
    I general read that around 60mm + or - is a good starting point with motors I have.
    What are your thoughts? I have seen the links for the math, but have not seen a link for practical suggestions in the FAQ's.
    • Optimistic Optimistic x 1
    Brett Horton, Nov 12, 2016
    #28
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
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    Occupation:
    Innovative tech specialist for NGOs
    Location:
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    Balance:
    145,028Coins
    Ratings:
    +10,776 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    60mm should be a reasonable starting point for the chosen motors and design.
    • Like Like x 1
    noorbeast, Nov 12, 2016
    #29
  10. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Rgr thanks....
    Also.... I am running my Rift. I still am unsure whether to mount the sensor on the rig (moving with) or make it stationary...
    I can't find a definitive answer for this
    Brett Horton, Nov 12, 2016
    #30
  11. 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:
    145,028Coins
    Ratings:
    +10,776 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Personally I am of the view that on a fast small axis movement sim try off the rig.

    On a large axis movement sim there is no real option but mounting the camera on the rig, as there is nor generic way to do motion cancellation. A gyro mount is also needed.
    • Like Like x 1
    noorbeast, Nov 12, 2016
    #31
  12. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Thats what I am thinking as well....
    I will initially try off the rig.
    I Build and Fly UAS for a living and have access to all sorts of small gimbals, so that could be an option as well. But just more to add to the mix....
    Hopefully will not have to go that route
    Thanks AGAIN!! for your help sir
    Brett Horton, Nov 12, 2016
    #32
  13. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Great progress today!
    Mechanical almost done, Rig painted, starting electronics final installation tomorrow...
    20161112_101152.jpg 20161112_101201.jpg 20161112_193124.jpg 20161112_193134.jpg 20161112_193141.jpg
    • Like Like x 1
    Brett Horton, Nov 13, 2016
    #33
  14. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
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    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    145,028Coins
    Ratings:
    +10,776 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Now that has been a quick build so far, well done :thumbs

    I am really looking forward to following the next phase of wiring it all up and eventually seeing your rig in action.
    • Like Like x 1
    noorbeast, Nov 13, 2016
    #34
  15. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Yeah, just over 2 days so far.....
    I'm sore and tired... lol
    • Like Like x 1
    Brett Horton, Nov 13, 2016
    #35
  16. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
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    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    145,028Coins
    Ratings:
    +10,776 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    I am not surprised, but your planning and preparation have really paid off!
    • Like Like x 1
    • Agree Agree x 1
    noorbeast, Nov 13, 2016
    #36
  17. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    Brett Horton, Nov 13, 2016
    #37
  18. insanegr

    insanegr !N$@n€

    Joined:
    Jan 14, 2014
    Messages:
    505
    Location:
    Athens
    Balance:
    16,715Coins
    Ratings:
    +499 / 1 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    could be 1 negative 3 positive and 2 feedback
    or 1 positive 3 negative and 2 feedback.
    wiper is alwawys your feedback line
    pot.png
    pic is from datashheet
    • Like Like x 1
    insanegr, Nov 13, 2016
    #38
  19. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    "could be", does not matter ? Sorry not really familiar with pots
    Brett Horton, Nov 14, 2016
    #39
  20. Brett Horton

    Brett Horton Active Member

    Joined:
    Aug 18, 2016
    Messages:
    310
    Occupation:
    Program Manager / Pilot
    Location:
    Tampa FL
    Balance:
    118Coins
    Ratings:
    +202 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    I keep seeing reference to the grounding issues with motors, causing shorts in your other equipment.
    Does this apply to my setup guys?
    Brett Horton, Nov 14, 2016
    #40
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