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Question Help wit NJMotion Compact EVO

Discussion in 'Commercial Simulators and Peripherie' started by deckard, Nov 27, 2025 at 13:39.

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  1. deckard

    deckard New Member

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    My Motion Simulator:
    2DOF
    I bought a 2DOF seat mover, NJMotion Compact EVO, few days ago. It was hard at the begining to make it work with Simtolls v3, using a PRO license. Every time I restart the PC, Simtools fails to detect the njmotion.

    The error I get is that Interface could not be started. I have checked all programs/services and no one is taking control of COM3, the one used by the motion. In fact, when using Simhub, I told Simhub to do not scan COM3 port and in UDP Relay (also in Simhub as this feature is now gone in Simtools) I set to forward data to 4123 UDP port

    In 8 days I have played only 2 days, and I still do not the reason for those 2 days to be successful. This is driving me crazy and even thinking about selling the motion for another one

    What can be preventing Simtools to connect with the NJMotion?

    Thanks error log.jpg error.jpg Interface.jpg
    deckard, Nov 27, 2025 at 13:39
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    In your explanation you mention both SimTools and SimHub, are you running both at the same time, as that may be creating a port conflict?

    Being a commercial rig have your sought help from the vendor?
    • Like Like x 1
    noorbeast, Nov 27, 2025 at 14:15
    #2
  3. deckard

    deckard New Member

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    My Motion Simulator:
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    I uninstalled Simhub and the issue remains, Interface cannot start. I contacted the manufacturer but they are not aware of connecting issues and adviced to contact Simtools

    I have been using it for one full day with no issues, in many games, having even Simhub opened at the same time. Today I restarted my PC and did not get it to connect
    deckard, Nov 27, 2025 at 14:19
    #3
  4. deckard

    deckard New Member

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    My Motion Simulator:
    2DOF
    I uninstalled Simtools and installed again. Going through the process of setting it up, I cannot pass it, I do not get the green check

    usb.jpg
    deckard, Nov 27, 2025 at 14:22
    #4
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Occupation:
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    Ratings:
    +11,108 / 56 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    While community members here may well try and help, given you have paid for a rig the direct responsibility for support is with the manufacturer.

    As I said my guess is a port conflict, so try rebooting the computer and an alternate USB port. @yobuddy may have further insights.
    • Like Like x 1
    noorbeast, Nov 27, 2025 at 14:35
    #5
  6. deckard

    deckard New Member

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    My Motion Simulator:
    2DOF
    I have rebooted several times, changed USB port.... and one time it succeded to connect. I have been playing for a while. Then I have rebooted the PC and since then I have not managed to connect again
    deckard, Nov 27, 2025 at 17:09
    #6
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Temporarily disconnect any other USB peripheral, reboot and see if is stable or not.
    noorbeast, Nov 27, 2025 at 21:15
    #7
  8. deckard

    deckard New Member

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    My Motion Simulator:
    2DOF
    Fingers crossed but I think the solution has been to change one COM3 by COM12 in Device Manager, as there were two COM3
    deckard, Nov 27, 2025 at 22:33
    #8
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
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    Occupation:
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    Location:
    Tasmania, Australia
    Balance:
    152,791Coins
    Ratings:
    +11,108 / 56 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    That sounds like a port conflict!
    noorbeast, Nov 27, 2025 at 22:36
    #9