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Keith's 6dof (wheelchair motors)

Discussion in 'DIY Motion Simulator Projects' started by Keith, Apr 16, 2022.

  1. luu trung

    luu trung Member

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    so why on forums do people use 1.2 scale pulleys or gears?
  2. Keith

    Keith Active Member

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    I think they do this for more accuracy. All I know is I have swapped out different sized pulleys and I'm now happy with 1:1. Every rig is different though.
    Last edited: Jun 20, 2022
  3. Mechatronik

    Mechatronik Member

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    If you have for example 360 degree pot and using only 90, 270 are useless. So with 1:3 will increase 90 to 270 (better resolution) and 90 degree deadzone (safety)
  4. luu trung

    luu trung Member

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    thanks. i am still confused about this. i am ordering 2 40:20 pulleys for testing, i am using 3 "heavy" shafts up and down. i just need the motor lever to 20 degrees and down 20 degrees rough road . i use googletransistor also a bit confusing . i need your help later
  5. Redcap

    Redcap New Member

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    You pull off 6 dof out of Yalu wheel chair motors... nice.
    I see you did experiment with different CTC lever lengths what distance worked for you?
    How they work for you when all are idle... do they support your mass?
    I'm currently wondering if investing in additional motors will work for me.

    Attached Files:

  6. Keith

    Keith Active Member

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    Hey. Sorry for the late response. These motors have plenty of power. The motors are only warm after an hours worth of play time or idle time.(with me sitting in cockpit.) I will take some measurments when I have a chance.
  7. Redcap

    Redcap New Member

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    No problem, waiting patiently for info :)
    Additional question: Is there any substantial benefit of 100A drivers compared to 20A... taking into consideration motors are rated to 13.4A ? I mean other than quite obvious ones like better thermals and futureproof upgradability?
  8. Keith

    Keith Active Member

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    The way we are using these controllers is more demanding, being under constant load.
    I'm guessing a lot of these controllers are over rated as well.
  9. luu trung

    luu trung Member

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    Hi. i see you use 3 arduino connected to 1 usb port.
    i plan to connect 2 arduino and 6 iBT 2 but don't know how to connect to SMC 3.
    Does your 3 ARDUINO have the same port.
    SMC 3 will be like if 2 arduino attached.
    thank
  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Each Arduino is allocated its own port, and configured accordingly to the port it is assigned, your can find the port by going to the Windows Device Manager then plugin the Arduino and check the port that is assigned.

    Follow the SMC3 instructions for setup: https://www.xsimulator.net/communit...3dof-motor-driver-and-windows-utilities.4957/
  11. luu trung

    luu trung Member

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    i mean how to get 4,5,6 motor in SMC 3.
    i am waiting for usb hub for testing.
    Or is SMC 3 able to open 2 panels??
  12. luu trung

    luu trung Member

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    Does your usb hub need additional power?
  13. Keith

    Keith Active Member

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    Yes it does
  14. SaintFrank

    SaintFrank Member

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    Hi Keith , great looking rig.

    I have a 2dof with the same motors and thinking of upgrading to 6dof.
    Servo motor route is pretty expensive , this looks like a great alternative.

    -How are the motors holding up ?
    -What is the CTC length of the levers, and how much movement doest it give?
    -What are dimensions of your base ?
  15. Keith

    Keith Active Member

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    Hi Frank, the motors are holding up great. No issues yet. The rig feels awesome, I don't feel motor lash like I did with the 2dof system. I will post some more pictures and measurements when I have some free time
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