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MY own 2 dof diy

Discussion in 'DIY Motion Simulator Projects' started by absyfadhel1, Apr 17, 2020.

  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    I guess you could lengthen the base frame and move the motors forward to connect to the end of the top frame under the pedals, that will enhance the inherent design leverage.
  2. absyfadhel1

    absyfadhel1 Member

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    yes this what i thought but i wasn't sure enough to do it, so you think it will help me achive easy movment with low backlash?, and where should i place the damper if i placed the motor forward?.. Thanks
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    It would put less strain on the motors, giving a bit more tuning flexibility.

    Backlash is a design factor with wormdrives, for lubrication, a little bit of forward preload weight bias helps, as does keeping the lever CTC length as short as is practical for your design.
  4. absyfadhel1

    absyfadhel1 Member

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    i changed motor position and now i got too much movment and its not stable at all, i dont know what to dow, i add tringle in front that i thought it will help but nothing changed, help

  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    I am guessing you mean the motors twisting the frame?

    If so I found running a bar between the motors helped stiffen the frame design, by making the motoirs part of the frame:

    [​IMG]
    • Like Like x 1
  6. absyfadhel1

    absyfadhel1 Member

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    yes that best solution ، thanks
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  7. absyfadhel1

    absyfadhel1 Member

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    i moved motors to front side under pedals but still green line not close to blue line, i use 300w 12v motors, 100a controller , smc3
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    So what are your SMC3 settings running the Sine test?
  9. absyfadhel1

    absyfadhel1 Member

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    upload_2023-11-30_15-14-0.png
    like this
  10. absyfadhel1

    absyfadhel1 Member

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    2.png
    this with 750 kp , 170 pwmax
  11. absyfadhel1

    absyfadhel1 Member

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    Hi, my 100a motor controller burned ☹️, so what you suggest to use instade of it? cheap but good drive controller?.


    ibt-2 cant handle my 300w 12v motor, 100a controller is good but i want something butter because its taking issue when moving like its hard to move with it i mean its not give good power
  12. absyfadhel1

    absyfadhel1 Member

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    will dual MonsterMoto shield as one will be batter than 100a driver? i tried dual ibt-1 as one before but it shutdown in action
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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  14. absyfadhel1

    absyfadhel1 Member

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    i used this one that burned

    Screenshot_20240102-053920.png
    so if i use 2x 100a as dual motor driver will work with this one and give more power?

    because each one cane move 2 motor so i use 2x100a to control 2 motor?
  15. absyfadhel1

    absyfadhel1 Member

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    Hi @noorbeast ,

    i'm thinking to repurchase the same motor drive i used before 100a 12v, but i think my motor got too much load because of that it burned.

    so i want to change middle shat position to forward because when i attach it i didnt try center of gravity.


    PXL_20231124_081803275.MP~2.jpg
  16. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    The rig must be properly balanced, with you and all peripherals in place, that is what determines where the unit joint is placed, see the FAQs here: https://xsimulator.net/community/faq/find-the-center-of-gravity-to-balance-a-motion-simulator.55/
  17. absyfadhel1

    absyfadhel1 Member

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    i got new arduino and new 100a motor driver,

    in smc3 its working perfectly, but in simtools the left motor react slowly, when i move it slow its moving at same time with right one but at speed its slow to react.

    i change usb cables, tried with another arduino, system languge and region set to united states, reinstall simtools and driver, change power supply .


    but nothing helped.






    when i disconnect the right motor its working perfect, so i think my psu cant handle two motor at same time? but i used it before and its was perfect! or the motor driver cant move 2 in same time but its new and i used it before!
  18. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    In the video it looks like you are using SMC3 and SimTools at the same time, if so that will create a port conflict.
  19. Kevinski

    Kevinski If it doesn't fit, hit it until it does.

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    Where are your grounds from your motors going? Or are these motors not susceptible to polarity/current change when DIR is changed possibly sending current spikes back to your 100a controller via the platform frame. The motors are mounted on the metal frame.
  20. absyfadhel1

    absyfadhel1 Member

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    i found out the problem, the psu is the problem , i tried with extra another one and its moving at same time but slowly because of low power.

    Thanks for help, but i what watt Psu should i take for my motors, 12v 300w motors i have.