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the motor never reverses the direction

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Mirko Meloni, May 17, 2024.

  1. Mirko Meloni

    Mirko Meloni New Member

    Joined:
    Jul 24, 2023
    Messages:
    7
    Balance:
    - 33Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF
    I followed the guide step by step and I would like to point out that this is the second simulator I have built. connecting everything as per the diagram and driving the motor never reverses the direction, it goes from 0 to 12 v but it never changes the polarity and therefore does not reverse the gear. I changed everything... but I can't figure out what the problem is.

    MODE2:

    Edit the SMC3 code for Mode 2 like this.

    Arduino to H-Bridge (Chinese 43A)

    ENA ----> IN1/RPWM
    ENB --+-> EN1/R_EN
    +-> EN2/L_EN (ie connect ENB to both R_EN and L_EN)
    PWM ----> IN2/L_PWM
    n.c. ----> IS1/R_IS
    n.c. ----> IS2/L_IS
    +5V ----> VCC
    GND ----> GND

    The image below shows wiring for two motors... Thanks to @@eaorobbie for getting me started with the image :thumbs
    [​IMG]
    Mirko Meloni, May 17, 2024
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    20,862
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    147,009Coins
    Ratings:
    +10,845 / 53 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Have you tested and determined the IBT2s are not damaged.

    Is the pot properly centered?

    Can you please post a picture of all of your SMC3 settings, and another running Sine test.
    noorbeast, May 18, 2024
    #2
  3. Mirko Meloni

    Mirko Meloni New Member

    Joined:
    Jul 24, 2023
    Messages:
    7
    Balance:
    - 33Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF
    The simulator had been working properly for weeks. then it stopped working because it overheated. at what point the Arduino was no longer recognized by Windows. I replaced the engine one time leaving everything else intact..... nothing. I replaced the Arduino (always loaded code with mod2)... nothing.....I also replaced IBM 2 and rewired everything from scratch.... nothing. most likely I'm doing something wrong but I can't understand where... Arduino wiring of the protection (direction) probably now I'm also confusing with the connections, so I left only one motor active. As soon as possible I'll post the image of the connection and the utility... I don't understand... before it worked perfectly for me.
    After i post the image.
    For now thank you
    Mirko Meloni, May 18, 2024
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    20,862
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    147,009Coins
    Ratings:
    +10,845 / 53 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Does Windows recognize the new Arduino and assign it a port in Device Manager?
    noorbeast, May 18, 2024
    #4
  5. Mirko Meloni

    Mirko Meloni New Member

    Joined:
    Jul 24, 2023
    Messages:
    7
    Balance:
    - 33Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF
    Windows e simutility they correctly recognize both the port and the device.
    the only problem is that the motor does not reverse the direction of travel because the potential never changes sign.
    Mirko Meloni, May 18, 2024
    #5
  6. Mirko Meloni

    Mirko Meloni New Member

    Joined:
    Jul 24, 2023
    Messages:
    7
    Balance:
    - 33Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF
    I solved!!!!! as luck would have it, for some strange reason even the new IBT2 were knocked out. I got two new ones and now it works both ways.
    • Winner Winner x 1
    Mirko Meloni, May 18, 2024
    #6
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    20,862
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    147,009Coins
    Ratings:
    +10,845 / 53 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Glad you got that sorted :thumbs

    IBT2s are built down to a price and members have reported faults, as well as damage when running them at 24v.
    noorbeast, May 18, 2024
    #7