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2DOF Wiring

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Max Klumpp, Jul 15, 2025 at 05:45.

  1. Max Klumpp

    Max Klumpp New Member

    Joined:
    Jun 11, 2025
    Messages:
    4
    Balance:
    24Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    I've been doing all the wiring for my sim, however when I tried to power it, my ground wire on the arduino melted. When I fixed the wire i double checked the rest of the wiring which seeemed correct (I'm following the diagram on the smc3 feed for itb2). When I connected the arduino to the usb it was fine, so I unplugged the usb to turn on the psu, and it was fine, but when I then plugged in the usb the ground wire melted again. My uninformed thoughts are that somehow voltage from the psu is ending up going through the arduino circuit. I'm not sure if the arduino or itbs are fryed and I'm not sure how to test it. And suggestions as to what the problem could be would be much appreciated, thanks.
    Max Klumpp, Jul 15, 2025 at 05:45
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,603
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    151,275Coins
    Ratings:
    +11,033 / 56 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    First, with itb2s please be aware that many members have reported quality issues, even with brand new itb2s.

    Can you please verify this is your wiring:

    [​IMG]

    If your wiring is exactly as per the picture, I would suspect a IBT2 fault.

    There are many other possibilities, but other members have often gone for alternate controllers, this being a popular far more capable/reliable alternative: https://www.xsimulator.net/community/faq/reasonably-priced-100a-motor-controllers.412/
    noorbeast, Jul 15, 2025 at 06:42
    #2
  3. Max Klumpp

    Max Klumpp New Member

    Joined:
    Jun 11, 2025
    Messages:
    4
    Balance:
    24Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Thanks for the suggestion. I have had it all working previously but just with one motor connected. Also yes that wiring is what I have used. It's possible that I've damaged one of the ibt2s at some point, do you know of a way to test them?
    Max Klumpp, Jul 15, 2025 at 08:35
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,603
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    151,275Coins
    Ratings:
    +11,033 / 56 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Jul 15, 2025 at 09:26
    #4