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MY own 2 dof diy

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

Page 16 of 20
  1. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino


    what should i do? is it gear problem? (Both side)
    absyfadhel1, Jan 5, 2023
    #301
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Backlash is common in wormdrives: https://www.xsimulator.net/community/faq/wormdrive-backlash.293/

    The longer the leavers the more pronounced the effect.

    A little bit of positive weight bias will help mask the back lash. An alternative is gas struts or elastic cord.

    It may be possible to shim a wormdrive, but in the end some back lash exists for lubrication purposes.
    noorbeast, Jan 5, 2023
    #302
  3. absyfadhel1

    absyfadhel1 Member

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    2DOF, Arduino


    left motor move more than right in simtools, smc3 work all good and move the same.

    also i use now hall effect potentiometer but its look like 100k pot, in smc3 this is max and min level i can reach in my rig now unlike 10k pot i use before

    qa.png
    absyfadhel1, Jan 10, 2023
    #303
  4. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    this is my simtools setting

    Screenshot 2023-01-10 180715.png Screenshot 2023-01-10 180704.png
    absyfadhel1, Jan 10, 2023
    #304
  5. kalbasator

    kalbasator Active Member

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    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform, 4DOF
    Hey! I recommend not to use any adapters (USB extension cords).
    Use these:
    upload_2023-1-11_9-56-3.png
    kalbasator, Jan 11, 2023
    #305
  6. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    i test without the usb extension but no diffrent.
    absyfadhel1, Jan 11, 2023
    #306
  7. kalbasator

    kalbasator Active Member

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    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform, 4DOF
    You don't happen to have a limit:
    upload_2023-1-11_16-25-12.png
    kalbasator, Jan 11, 2023
    #307
  8. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
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    i limit axis to save my rig becuase pot move so large , i tried yo make limit 100 for all and test but its give same problem, left motor movebmore than right
    absyfadhel1, Jan 11, 2023
    #308
  9. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    BHD 0.54 39%OFF | 1/2Set GT2 Synchronous Wheel 60 Teeth 20 Teeth 8mm 5mm Bore Width 6mm Aluminum Timing Pulley with Length 200mm Belt with Wrench
    https://a.aliexpress.com/_mLlGv0Q

    which one should i buy?, i use 360 hall effect
    absyfadhel1, Jan 12, 2023
    #309
  10. kalbasator

    kalbasator Active Member

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    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform, 4DOF
    Hey! If you use 60/20 then the lever will work in a partial range, something like this:
    upload_2023-1-16_13-19-31.png
    It might be better to use 60/40. But I may be wrong.
    kalbasator, Jan 16, 2023
    #310
  11. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    Thanks so much , i will buy 20T-(40t and 60t)

    better so i will check both
    absyfadhel1, Jan 16, 2023
    #311
  12. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    try every single setting in smc3 like

    lowering pwMin

    Kp higher or lower

    Ki lower

    kd higher until 200

    ks high and low

    nothing help, the motor mounted corecctly, pully tighted , all wires replaced, diffrent arduino, changed lever angle, Pc reigon is set to Us engilsh ....

    what should i do??

    i think ist because motor lash , please suggest best box ratio, 25:1 60:1... whish size is the best ?

    motor power is 12v 300w 60rpm

    i think 60rpm is still good for this right? or should i replace the motor?

    absyfadhel1, Jan 19, 2023
    #312
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    What happens if PWMmin is 20, kp 400, PWMmax and PWMrev are set 20 over whatever the rig starts to move at?

    How well balanced is the rig and how was that done?
    noorbeast, Jan 20, 2023
    #313
  14. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    i know what the problem,... motor move has backlash or idont know what called, like its moving the lever when its idle, so i need new motor, give me suggest for best motor size , ratio, rpm, watt
    absyfadhel1, Jan 20, 2023
    #314
  15. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Some backlash in a wordrive is normal and required for lubrication: https://www.xsimulator.net/community/faq/wormdrive-backlash.293/

    Can you demonstrate why you think yours is excessive?
    noorbeast, Jan 20, 2023
    #315
  16. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
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    because when i let pull the rig to rear while testing smc3 there is no shake and move smooth, so i'm thinking now to use gas strute because as i saw on some thread that all worm gear has slake backlash
    absyfadhel1, Jan 20, 2023
    #316
  17. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Have you tested it with the top platform disconnected?
    noorbeast, Jan 20, 2023
    #317
  18. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
    2DOF, Arduino
    i didn't understand what you mean? sorry can you expline ?
    absyfadhel1, Jan 20, 2023
    #318
  19. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    +10,776 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    If you disconnect the arms to the top platform do the motors behave the same, or differently?

    Backlash can be an issue, but all I am suggesting is that there may also be a range of possible causes and best to investigate rather than presume.
    noorbeast, Jan 20, 2023
    #319
  20. absyfadhel1

    absyfadhel1 Member

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    My Motion Simulator:
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    oh ok i will check
    • Like Like x 1
    absyfadhel1, Jan 20, 2023
    #320
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