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Question Can't connect to any of my arduino via serial (sabertooth)

Discussion in 'SimTools Pro & Entertainment Version' started by Pierre Lalancette, Feb 9, 2026 at 04:12.

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  1. Pierre Lalancette

    Pierre Lalancette Sir Lalancelot Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino, 6DOF
    Hello everyone.

    I have 3 motors run by 3 Arduinos with 3 Sabertooths. With Simtool v3.0, I can't connect to my serials, or I don't know how to test the connections.
    I have this, compare to SMC3 doc:

    serial_01.jpg

    I have tried all BitsPerSec, all my COM, 2 axis. I tried to test directly from the axis and with forces. Nothing works.

    But just to make sure. To test my setting, all I have to do is press "Test Settings" and move "Axis1a", right? Or do we have to do something else to connect to the port?

    When I use Mover with those settings, all my Axis are working fine. I know they have different strings editing, but I have no idea what I am doing wrong in Simtools. Here, the "Speed" is at 460800, but it is because 5000000 is missing from the interface. Older version of Mover were working fine at 5000000.

    serial_02.jpg

    If anyone has an idea.
    Pierre.
    Pierre Lalancette, Feb 9, 2026 at 04:12
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    The pictures are shown to be using different Comm ports, are the Arduinos actually on that port?

    Via the Windows menu please check and post a picture of the Comm ports in Devices.

    Only one bit of software can access a Comm port.

    Sometimes Firewalls and Anti-Virus interfere with communications of newly installed software.
    noorbeast, Feb 9, 2026 at 04:40
    #2
  3. Pierre Lalancette

    Pierre Lalancette Sir Lalancelot Gold Contributor

    Joined:
    Dec 11, 2016
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    1,008
    Occupation:
    Tech Artist
    Location:
    Quebec, Canada
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    8,037Coins
    Ratings:
    +945 / 6 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, 6DOF
    I'm not at my computer right now, but I know that I use PORT 3-4 and 5. Like I said, I tested them all. Il get a picture when I can.
    Windows defender could be the problem. I'll have to check that. Maybe running with admin privileges...
    Thanks.
    Pierre Lalancette, Feb 9, 2026 at 15:35
    #3