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Hello, please help with jittery motors

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Haydn, Apr 20, 2020.

  1. Haydn

    Haydn New Member Gold Contributor

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    yeh, as you say, both computers have the same config settings. i did have the utilities connected in the beginning no problems but had a problem connecting to simtools, so i updated the driver and think that may be when the problem started, not sure though. i reverted the driver back to the prior installation, but that didnt fix it. im at a total loss as to how everything works fine on the laptop (not even any warmth in that wire) and it fries instantly when connected to the PC. i can connect to PC as long as power supply isnt on.
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    That sounds like a significant PC usb related issue, but I can't conceive how that would occur.
  3. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    Please do not understand my comment as an affront, but IMHO I would "never" do the same mistake twice or even more often. As you noticed your PC shows usb issues in "frying" your ground wire of the Arduino. You are going to risk a hardware failure only by doing it again and again ;)

    I guess since your notebook works fine try fiddling out the source of the short circuit of your PC before you take the next steps. :thumbs
  4. Haydn

    Haydn New Member Gold Contributor

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    Thank you both for your response,
    Thanks for your reply, and yeh! i get where your coming from in not trying the same thing over and over again without finding the fault, but in my defense (not implying that you attacked) i had replaced the ground wire thinking there must have been a break in it causing the issue in the beginning. not so obviously! I also reverted to the previous driver and tried again too.

    also, i found it very odd that it wasnt just when the usb was connected, it happened if usb was connected while power source already connected. usb connected alone, no problems. power supply connected alone, no problems. it is only when both are connected regardless of which one is connected first.

    i think it happened after updating the driver, why did i update the driver? i had a wrong entry in interface settings and wasn’t connecting to simtools, so I updated the driver thinking that may be the issue. then corrected entry in interface settings. Not 100% sure if that’s when it happened or not as I was moving back and forth between pc and laptop at the time, but was certainly around that instance.
    all other usb devices on the pc work just fine, no issues!

    this ones doing my head in! any assistance would be greatly appreciated