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Question how to run the motor to the middle when the initial start?

Discussion in 'New users start here - FAQ' started by Arta Yasa, Jan 31, 2023.

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  1. Arta Yasa

    Arta Yasa Member

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    My Motion Simulator:
    2DOF
    how to run the motor to the middle when the initial start? so when i disconnect the usb to the arduino the motor will lose power to be in the middle and immediately fall to the bottom. like this picture.[​IMG]

    because at that time, if I opened the smc3 utility, the motor would definitely turn off, and I had to find the middle to turn it on. is there a way when the usb motor connects automatically looking for the middle slowly??? (because my motorbike is not selflock).

    I have tweaked start up and shutdown on smc 3 nothing happens. maybe someone can help??

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    Arta Yasa, Jan 31, 2023
    #1
  2. zapata_h

    zapata_h Active Member

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    My Motion Simulator:
    3DOF, AC motor, Arduino
    Once you have adjusted the position of the crank with 50% of the potentiometer it should be positioned at the start
    zapata_h, Jan 31, 2023
    #2
  3. Arta Yasa

    Arta Yasa Member

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    No i mean is when i turn off the power supplay and unplug the usb the motow will turn to the bottom canot hold in the midle. Because of that when i turnon psu an plug usb again the motoe is off because out off range ( i checkn on smc3 utility) so how tu turn the motor to the midle when firt time on??
    Arta Yasa, Feb 1, 2023
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    When an un-powered motor rotates that is called being back driven.

    Perhaps the simplest solution is pivoting blocks to take the load when the rig is un-powered, as used by @Nick Moxley: https://www.xsimulator.net/community/threads/2dof-to-3dof-diy-seat-mover.5271/page-12#post-55552
    noorbeast, Feb 1, 2023
    #4
  5. zapata_h

    zapata_h Active Member

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    My Motion Simulator:
    3DOF, AC motor, Arduino
    This is produced by the relationship between the output shaft and the motor, as @noorbeast says, one of the ways is to mechanically block it, I use ac motors with vdf, in my case it does not happen due to the gear ratio.
    zapata_h, Feb 1, 2023
    #5