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Logitech G27 Force Feedback FFB Assetto Corsa - A.S way

Discussion in 'Assetto Corsa' started by =A.S=, Sep 30, 2017.

  1. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    WheelCheck.. FCM tool Lut Converter.. FFBClip App .. tried them all . . and wasted alot of time testing pretty much every guide out there.. till i was like.. ok . time to think.. and not replicate things like a parot.. and VIO LA.. never been so good before. Let me know how it works out for ya. Enjoy !

    G27 Owners .. simplicity is DEVINE!

    The confusion and frustration of the G27 not being a good wheel and the pain to set it up correctly.. its your christmas today.. try.. and thank me later.
    Without going into once again confusing technical details.. straight forward.

    1)
    120% in oder to eliminated the "deadzone behaviour" or interfacing bug of the G27 completly - just by doing that

    40% - 55% dampening, because otherwise your wheel will turn loose if car isn´t rolling. Standing rubbers still provide resistance on the steering wheel. ( i have to in 70% as the not roll resistance should be higher than the slow roll one)

    [​IMG]


    2)

    Under C:\Users\UserName\Documents\Assetto Corsa\cfg in the controls.ini file edit like this:

    [STEER]
    JOY=0
    AXLE=0
    SCALE=1
    LOCK=855
    FF_GAIN=1
    FILTER_FF=0.6
    STEER_GAMMA=1
    STEER_FILTER=0
    SPEED_SENSITIVITY=0

    MIN=0
    MAX=0
    DEBOUNCING_MS=5

    [FF_TWEAKS]

    MIN_FF=0
    CENTER_BOOST_GAIN=0
    CENTER_BOOST_RANGE=0


    [FF_ENHANCEMENT] (or 0 them out.. and do by car individually)
    CURBS=0.15
    ROAD=0.05
    SLIPS=0.1
    ABS=0.05


    [FF_ENHANCEMENT_2]
    UNDERSTEER=1


    3)


    Create a file Linear.txt file in the C:\Users\UserName\Documents\Assetto Corsa\cfg folder, open it with notepad or editor and add:

    0.00|0.00
    0.02|0.02
    0.04|0.04
    0.06|0.06
    0.08|0.08
    0.10|0.10
    0.12|0.12
    0.14|0.14
    0.16|0.16
    0.18|0.18
    0.20|0.20
    0.22|0.22
    0.24|0.24
    0.26|0.26
    0.28|0.28
    0.30|0.30
    0.32|0.32
    0.34|0.34
    0.36|0.36
    0.38|0.38
    0.40|0.40
    0.42|0.42
    0.44|0.44
    0.46|0.46
    0.48|0.48
    0.50|0.50
    0.52|0.52
    0.54|0.54
    0.56|0.56
    0.58|0.58
    0.60|0.60
    0.62|0.62
    0.64|0.64
    0.66|0.66
    0.68|0.68
    0.70|0.70
    0.72|0.72
    0.74|0.74
    0.76|0.76
    0.78|0.78
    0.80|0.80
    0.82|0.82
    0.84|0.84
    0.86|0.86
    0.88|0.88
    0.90|0.90
    0.92|0.92
    0.94|0.94
    0.96|0.96
    0.98|0.98
    1.00|1.00

    There you go, you wanted a linear G27.. there you have it now.

    After that, rename the Linear.txt file to " Linear.lut" (lima, utha, tango) and save it.

    4)

    Open the ff_post_process.ini file and change it to:

    [HEADER]
    VERSION=1
    TYPE=LUT
    ENABLED=1

    [GAMMA]
    VALUE=1

    [LUT]
    CURVE=Linear.lut

    5)


    Open the assetto_corsa.ini file under :\Steam\steamapps\common\assettocorsa\system\cfg and make sure the following part look like this

    [FORCE_FEEDBACK]
    FF_SKIP_STEPS=1

    [FF_EXPERIMENTAL]
    ENABLE_GYRO=0
    DAMPER_MIN_LEVEL=0.0
    DAMPER_GAIN=1.0

    6)


    ingame should now look like this:

    [​IMG]


    Here you can also use 60-70% as GAIN Main and Filter ZERO !!



     
    Last edited: Sep 30, 2017
  2. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    Personal recomendations:

    [FF_ENHANCEMENT]
    CURBS=0.00
    ROAD=0.00
    SLIPS=0.00
    ABS=0.00

    And if desired set individually i each cars FFB setup.


    Also, what i use (yes! 50% filltering..makes the G27 with the above smooth as silk :) )

    [​IMG]

     
    Last edited: Sep 30, 2017
  3. RasmusP

    RasmusP
    AC Stuff and G27 help Staff Premium

    Messages:
    2,088
    Ratings:
    +780
    Hey man!
    Glad to see someone sharing my opinion about all the guides, tools etc. that are out there!
    Seems like we did the exact same path and just weren't satisfied! :cautious::whistling:

    Your guide is nicely structured and a lot of true things are in there! :thumbsup:
    I just don't like the "notch" you get when you just raise the overall FFB in the profiler.

    2 things for you:
    Your "linear" lut doesn't do anything. The default FFB is completely linear and exactly what you typed in.
    The dampening looks interesting though! But in my opinion the G27 already rotates too slowly for drifting etc. so I disabled it.
    BUT: when you give the 0| XX value in the LUT a value, the wheel starts to make some noise in center position. This gives some kind of "dampening" when moving around the center while driving.
    But if you raise the profiler overall FFB over 100%, this value starts to mess up your wheel. Shaking, turning etc etc.

    Please see this reply as a big compliment! We need people like you :)

    But maybe you wanna give MY guide a try and see if I can make you even happier :inlove::inlove:
    http://www.racedepartment.com/downloads/rasmusps-lut-guide-for-g27-29-and-dfgt.16799/
     
  4. natedogg1867

    natedogg1867

    Messages:
    405
    Ratings:
    +261
    Dampening in AC works a lot differently than any other sim. (referring to the dampening setting in the logitech profiler)

    Dampening only affects your steering wheel when the car is stationary. It has zero affect when you are driving. Think of it as a 'stationary friction' adjustment rather than dampening in the normal sense that every other game uses it.

    So, at 0%, your wheel will rotate freely when you are stationary. At 100%, it likely wont budge. I have settled on 35%, as I like some small resistance and weight in the wheel since it feels more natural.
     
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  5. RasmusP

    RasmusP
    AC Stuff and G27 help Staff Premium

    Messages:
    2,088
    Ratings:
    +780
    Makes sense, thanks for the detailed reply!
    Does the damper slider in the profile affect the wheel while driving or does it just enable this stationary effect?
     
    • Like Like x 1
  6. Joseph Maxx

    Joseph Maxx

    Messages:
    684
    Ratings:
    +221
    Stationary only. Well until you reach 3 km/h then it switches off (I believe that's the default for AC).
     
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  7. RasmusP

    RasmusP
    AC Stuff and G27 help Staff Premium

    Messages:
    2,088
    Ratings:
    +780
    Ah, yeah I know that setting in the config! Didn't know how it's affecting the damper setting though!
     
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  8. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    At Rasmus .. i tried everything (pretty much you had on this forum) .. that non-satisfaction is the reason why i came up with my own. I understand your point of view.. but i think it is flawed at some points.. You approached it different.. respected.. but also consider..i approached "from different angle"

    1) maybe the FFB physics is more "script" than you think.. and the "common sense" you use (i) used does not fly here .. i smells like it ALOT
    2) My testings and results put a BIG SMILE in my face.. yours did not


    PS:

    you can disable filter in game UI (slider) and add:

    EDIT:

    0.00000|0.00000
    0.00250|0.00250 << not lesser .. or things get too sensitive and oscillating
    0.00500|0.00500
    0.00750|0.07250
    0.01000|0.01000
    0.02000|0.02000
    0.03|0.03
    0.04|0.04



    a couple more lines in the linear.lut. makes is nicer around the dead-zone i figured.


    btw.. you have to know.. that i reduce the CAR GAIN individually ! .. and also, you need to know, that i always start with cars i am familiar with as test-bed ..in this case with BMW M1 and M3 (i built those ****ers in the past)
     
    Last edited: Sep 30, 2017
    • Like Like x 1
  9. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    Quote: I just don't like the "notch" you get when you just raise the overall FFB in the profiler.

    from 100% to 120-125%??

    yeaaaah.. i ran some measurement applications.. and figure.. that IS THE ONLY CORE-CAUSE way to eliminate the natural hardware/electronics based deadzone out of the G27 ;)

    for auto-recentering wheel faster in drifts.. add 20% recenter.. it will work.. ALTHOUGH the box is checked .. allow application to control it. Alot of things dont makes sense..i worked retroductive (not speculative or assumptions and re-confirmation test-series.. but instead reconstructive analytic aka backwards - and old greek methods used not often enough imo.)
     
    Last edited: Sep 30, 2017
    • Like Like x 1
  10. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    I have NO

    deadzone (juuust a tiny tiny bit.. as it should be in every car btw)
    oscilations at all !
    smooth feel of car and road

    me happy :)
     
    • Like Like x 1
  11. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    • Like Like x 1
  12. RasmusP

    RasmusP
    AC Stuff and G27 help Staff Premium

    Messages:
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    Ratings:
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    That's the most important thing! I will try your settings! This journey has no end it seems :)
    Didn't want to say that you are doing something wrong, just didn't know if you didn't see my guide :)

    I'll report back when I tried yours!
     
  13. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    Thanks.. i tried all you posted. 2 days head-ache. .and other forums and hours of coffee first ofc :)
     
    • Haha Haha x 1
  14. RasmusP

    RasmusP
    AC Stuff and G27 help Staff Premium

    Messages:
    2,088
    Ratings:
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    Yeah I know that feel:roflmao:
     
  15. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    EDIT:

    0.00000|0.00000
    0.00250|0.00000
    0.00500|0.00000

    0.00750|0.07250 << not lesser .. or things get too sensitive and oscillating
    0.01000|0.01000
    0.02000|0.02000
    0.03|0.03
    0.04|0.04
     
    Last edited: Sep 30, 2017
  16. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    see above.. just tested to be sure .. little EDIT
     
  17. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    sidenote.. it always comes to :

    - minute mechanical play in hardware translating to bigger play on wheel
    - sensor data quality and resolution (frequency read and precission)

    always same story.. and the g27.. well it serves well..IFFFF tuned right..otherwise.. a oldtimer.
     
  18. kunos

    kunos
    Kunos Simulazioni Premium

    Messages:
    206
    Ratings:
    +801
    yeah right... there isn't enough snake oil in simracing... WE NEED MORE!
    :sick:
     
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  19. =A.S=

    =A.S=

    Messages:
    61
    Ratings:
    +5
    sharing is caring :) not selling anything Sir
     
  20. kunos

    kunos
    Kunos Simulazioni Premium

    Messages:
    206
    Ratings:
    +801
    yep, I am sure your random numbers have more feelz than all the other random numbers on the internet that obviously have less feelz.
     
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