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G27 no Force Feedback on zero position

Discussion in 'Troubleshooting: Bugs, Questions and Support' started by Old Garyman, May 6, 2019.

  1. Old Garyman

    Old Garyman
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    Hello,
    I have a Logitech G27 steering wheel. I followed the instructions in the wiki https://wiki.beamng.com/Steering_wheel_setup and the steering wheel works fine. But the Force Feedback is not available in the zero position with a little space to the left and right. So there is no force resistance. I hope you understand what I mean, because I find precise driving difficult.
    And I hope someone has an idea ;)

    Greetings
    Old Garyman
     
  2. stenyak

    stenyak
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    BeamNG Team

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    Deadzone in the force is created through a response correction curve. Can you please take a screenshot of what your settings look like, correction curve included?
     
  3. Old Garyman

    Old Garyman
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    Hello stenyak,

    the response correction curve was deactivated.
     

    Attached Files:

    • ResponseCorrectionCurve.jpg
  4. Old Garyman

    Old Garyman
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    Ok I've run WheelCheck.exe in Step Log 2 mode and renamed the log*.csv to wheel.csv
    The Deadzone is about 14%.
    Is there a tool or a good tutorial to correct the values?
     

    Attached Files:

    • ResponseCorrectionCurve-WheelCheck.jpg
  5. fufsgfen

    fufsgfen
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    There is this, but does not cover much of curve part, however there was talk about it in replies:
    https://www.beamng.com/threads/guide-to-ffb.56886

    You should be okay with quick updates now though as there was improvements.

    For response curve, manual editing of curve might be needed (for example in excel), that deadzone part might need smoother ramp up to get better feeling.

    Personally I did not find curve working on my T150 wheel at all, FFB became very on/off with the curve enabled and even when edited, there was clear notch at center instead of smooth falloff, not really sure if that is what people actually desire.
     
  6. krallopian

    krallopian
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    BeamNG Team

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    Thought the g27/g29 both suffer from this through a design issue and not software?
     
  7. Old Garyman

    Old Garyman
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    My G27 Wheel works fine with Project Cars, I think they have a solution for this problems.
    --- Post updated ---
    Thanks for your link, fufsgfen.
    I didn't understand everything, but I know that I probably have to edit the wheel.csv myself. I hope that stenyak has another idea how to get around it.
    I've tested the LutGenerator 0.15, but it doesn't deliver any useful results for me.
    I've found this link http://forum.projectcarsgame.com/sh...eel-FFB-Values-Google-Sheet-amp-FCM-Universal
    but I can't really get the script in the spreadsheet to work. The Graph is not responding my input.

    "...not really sure if that is what people actually desire." who knows... ;)
     
  8. fufsgfen

    fufsgfen
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    Editing CSV with spreadsheet program is not really bad job at all, worth to open file and examine it, you can figure out it quite quickly where you need to replace 0 entries with formula that makes smooth falloff. It's just E5-500 or something like that and then use handle to copy that to all needed cells (example had no real numbers or cells).
     
  9. Old Garyman

    Old Garyman
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    Sorry fufsgfen, I'm not exactly sure what you're trying to tell me.

    However, there are three possibilities in the guide, that I've overseen. The best solution for me is the "FCM usage" with FCM linear test.
    It is not perfect but It's a good beginning. Maybe I'm trying WheelCheck with FCM
    Here my new Response Correction Curve:
     

    Attached Files:

    • ResponseCorrectionCurveFCM.jpg
  10. fufsgfen

    fufsgfen
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    Oh, that curve looks much better already, never knew about FCM stuff o_O

    What I meant earlier was this:
    upload_2019-5-7_2-57-12.png
    That is what wheelcheck writes and for lower forces deltaX is 0 pretty much, well without FCM stuff that is, so I just wrote some numbers instead of zeros however it did not work satisfactory to my liking, might of been too small numbers.
     
  11. stenyak

    stenyak
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    Ok, I see two big issues.

    First one, is that the correction curve, is activated (you said it wasn't). But ignoring whether it's enabled or disabled, you can see the correction curve is flat. We bundle a correction curve for the G27 in BeamNG.drive (one I made myself), so this means one of two things:
    - Either you explicitly removed the normal correction curve. If this is the case, then it's okay.
    - Or the Logitech G27 drivers are not correctly installed, meaning that the safe G27 settings we bundle by default won't get picked up. If this is the case, please make sure you install the drivers and that the Logitech Profiler software actually detects your steering wheel, and not only that, but it sees a G27 and not a different logitech steering wheel (it can happen).

    In any case, the correction curve is a secondary issue. Please disable it until you fix the basic problems. Once the wheel is at least working correctly, you can re-enable afterwards and move onto fine tuning the settings.


    Second one, is that you have added a deadzone in the center of the steering wheel. This is the "Deadzone (rest)". There should be no reason to add this deadzone in a steering wheel. Why did you feel the need to add it?
     
  12. Old Garyman

    Old Garyman
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    Thanks for the answer.
    I didn't change or delete anything before. But I have a new PC and have transferred the data and left so. I assume that there were problems. So now I delete the BeamNG.drive folder of Documents.

    Voila, now it works fine :)

    And the thing with "Deadzone (rest)", my Response Correction Curve wasn't very mature, so I wasn't finished yet. Because in the middle there was still some room for manoeuvre.

    I'm very happy with your Response Correction Curve, thumbs up.

    Drive hard,
    Old Garyman
     
  13. stenyak

    stenyak
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    It seems that at some point in the past you have tweaked the settings, leaving them in the current (broken) state. For future reference, you can also click the Options > Controls > Reset All button, and it will erase any customizations you may have done to your controls, leaving the game defaults.

    In case it's not clear, the Deadzone setting means you are artificially introducing an area where your controller will not respond. It is intended to prevent spring-driven devices (such as joysticks gamepad sticks, pedals, etc) from sending a non-zero signal when you let go the controller (e.g. car slightly steering left if you release the joystick). In a steering wheel, which doesn't have a physical spring mechanism, this is counterproductive, as it means you cannot control the steering in the center, having to resort to aggressive movements left and right before it works. Deadzones also mess with the force feedback (force feedback is computed based on the steering axis position, so if that information is nerfed, the ffb system will produce wrong results).

    Anyway, glad to see you got back to a working state and the defaults are to your liking! :)
     
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