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2DOF motor's only move in one direction?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Surferjo86, Dec 2, 2020.

  1. Surferjo86

    Surferjo86 New Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, 4DOF, 6DOF
    I'm half way though my build (hopefully half way)

    All wired up, but when I come to command the motors to move in SMC3 they only move downwards (see picture)

    I've doubled checked my wiring and it looks to be okay.

    Any help would be great!

    Thankyou ~J

    Attached Files:

    Surferjo86, Dec 2, 2020
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    noorbeast, Dec 2, 2020
    #2
  3. Surferjo86

    Surferjo86 New Member

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    Surferjo86, Dec 2, 2020
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    noorbeast, Dec 3, 2020
    #4
  5. MarkusB

    MarkusB Well-Known Member Gold Contributor

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    Did you check my suggestion that I posted to your build thread, in which you asked exactly the same question?
    MarkusB, Dec 3, 2020
    #5
  6. Sam Neall

    Sam Neall Member

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    Hey, I had a similar issue and fixed it by changing the baud rate to 112500. Let me know if this works for you. Some third party Arduinos can't handle a 50000 baud rate and will mess up motor positioning causing twitching and, as you said, one direction commands.
    • Winner Winner x 1
    Sam Neall, Jan 18, 2021
    #6
  7. Surferjo86

    Surferjo86 New Member

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    Thankyou for that. I ended up replacing the UNO board yesterday and it fixed the issue.
    I will keep that in mind in case I run into future problems.
    Surferjo86, Jan 21, 2021
    #7
  8. Sam Neall

    Sam Neall Member

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    I’m glad you were able to fix it!
    Sam Neall, Jan 21, 2021
    #8
  9. imajavaid

    imajavaid Member

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    I have to change baud rate when Im going to upload code to arduino ? Or there is any settings of smc3 which can change the baud rate
    imajavaid, Apr 21, 2022
    #9
  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    You should not need to touch the SMC3 code, other that specifying Mode 1 or 2 for your particular hardware.

    You can set the baud rate in SimTools Interface Settings, though for Arduino it is usually set to BitsPerSec - 500000
    noorbeast, Apr 21, 2022
    #10