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Showroom **RIP** - 6DOF project using 12v DC Motors, Sabertooth 2x60's (was MM's) and Arduinos + OSW

Discussion in 'DIY Motion Simulator Projects' started by SilentChill, Jun 2, 2015.

  1. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    Ya its a BIG A** heavy chunk O aluminum and steel. :cheers
  2. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
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    Just a little blip from the AC forum in discussing Big mige VS Small mige.

    "For the torque calculation, you have to divide the current by sqrt(2) as it's specified as peak-of-sine (although it's squared pulses in thruth, but that's how it's calculated).
    The servo torque factor is meant for root-mean-square: RMS = POS / sqrt(2)

    On the other hand, 12.5 A is above the specs for the 480W PSU: 48V * 10A = 480W
    Unless of course you have the PSU with the 720W peak option. That one can deliver 15A for 3s.

    Regarding small vs. large Mige and the options he supplies:
    Continuous: 480W → 10A / 1.41 * 1.67 Nm/A = 11.2 Nm
    Peak: 720W → 15A / 1.41 * 1.67 Nm/A = 16.8 Nm

    Yes, you read that right. With the PSU he provides, you will actually get a lower torque with the "big" Mige than with the "small" Mige due to the lower torque/current coefficient.
    To get the full out of the big Mige, you would need the 960W PSU (or something similar), which does provide 20A (up to 26A peak) and even with that you would "only" get 29.1 Nm under peak load.
    That accompanied with a higher servo inertia (1.94e-3 kg.m2 vs. 2.77e-3 kg.m2)."
    • Informative Informative x 3
  3. cfischer

    cfischer Active Member Gold Contributor

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  4. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    That would give most people reason to pause and consider the cost per kg.
  6. cfischer

    cfischer Active Member Gold Contributor

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    But he bought it for 200 bucks. Lots of deals like that on ebay. Plus there are cheaper ones that would probably do quite nicely I think.
  7. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
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    Yea, always seem to 'hear' about them - never actually see too many in my neck of the woods :rolleyes:. Gee I don't know how these companies can make money with all this cheap stuff on ebay....sorry;). It just makes me think of cheap MMs.. :).
  8. yumianhuli1

    yumianhuli1 New Member

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    My Motion Simulator:
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    Hello!
    What is the parameters of your wiper dc motor,power(W) speed(RPM) and torque(N.M)?
    regards yumianhuli
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Have you read the thread. These are not wiper motors.
    • Agree Agree x 2
  10. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
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    Yeah these are not wiper motors neither on the old geared motors or the new actuator motors. Please go back and read as there are links and pictures to both types anyways
    • Agree Agree x 2
  11. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    My Motion Simulator:
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    Would be great if you like to update the first post with a few latest videos of your project. I am searching like an idiot to look for videos i want to show a friend:)
    • Agree Agree x 1
    • Optimistic Optimistic x 1
  12. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
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    Just for you @RaceRay I will do it when I get chance :)

    edit: or you could just search SilentChill on youtube :)

    https://www.youtube.com/channel/UCNbwVIbv1c_SO7rM1etFW1g
    • Like Like x 2
    • Friendly Friendly x 2
  13. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    My Motion Simulator:
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    Subscribed to your channel now;)
    • Friendly Friendly x 1
  14. STEPHANIE

    STEPHANIE Member

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    GOOD JOB !!!
  15. chat2c

    chat2c Member

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    Beautiful project alor la I do not know what to say! Do you have more pictures and information about your project?
  16. SilentChill

    SilentChill Problem Maker

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    Ermm more ? No everything is in this thread ;)
  17. cfischer

    cfischer Active Member Gold Contributor

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    Have you been playing Richard burns rally much with the new setup? Curious to hear how you like it compared to dirt.
    • Creative Creative x 1
  18. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    No never played it since Dirt Rally came out the old gfx spoil it for me too much now
  19. cfischer

    cfischer Active Member Gold Contributor

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    Interesting. Trying it in vr I don't mind the graphics but the sound is hard to stomach. I play them both for the variety in physics and stages.
  20. Wagnard

    Wagnard Active Member Gold Contributor

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    My Motion Simulator:
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    Greetings everyone.
    I've been following this thread a little for while and I would like to mention that me and my father will probably build something quite similar to SilentChill build.
    For the moment we are more at gathering informations.

    There is one question I have in mind at the moment and its on the software side. I would like to know what firmware/code you got into your Arduino Uno. I saw a bunch of code here but they seems most of the time be for 2-3DOF. I'm curious of where / what code you got for the 6DOF.

    Sorry for my English too, it is not my first language so I hope you guys understand me correctly. ;)
    • Like Like x 1