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SCN6 3 DOF...problem when starting up Game Engine

Discussion in 'SimTools DIY Version' started by nff, Jan 8, 2016.

  1. nff

    nff New Member

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    Hi

    I have a 3 DOF SCN6 motion simulator, but i have a problem when starting Game Engine...the initial starting movement in the 3 axis (traction loss) goes further than the limit of my plates...that doesn't happen in the game when playing, just in the Game engine start up...i've tried axis limiting, but no success...what to do to limit the movement or just cancelling that initial start up movement?!

    MANY THANKS
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Can you please post pictures of your interface settings.
  3. nff

    nff New Member

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    Interface settings....the speed, rate, port of the SCN's tab?!
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  4. prodigy

    prodigy Burning revs

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    I think the startup limit cannot be set, at least not in this version of Simtools.
    It looks like it searches the min and max point of SCN extension and goes back to the center.

    Later on you can limit the SCN travel in axis configuration for each game, but it would be good for sure to have an startup limiter too.
  5. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    Upon starting up a scn actuator, SimTools needs to scan the axis to learn its length and center.

    It seems a bit strange that one would use a scn actuator in a fashion that does not allow it to use its full length.
    May I please see a pic of your traction loss so I can see exactly what’s happening over there buddy?

    yobuddy
  6. pipis2015

    pipis2015 over-boost

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    +1 on the comment.
    Why not decrease the leverage of your actuator to your platform so a full travel of the SCN6 results to less travel on your platform?
  7. patritti

    patritti simracer

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    i have traction lost with a scn6 actuator . i have no problem . can you share a picture how you traction lost is scn6 i mounted ?
  8. nff

    nff New Member

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    Hi

    I have it in a position to give it the maximum travel...but the fact is that not always this problem happen in such a pronounced way...it used to travel the plates, but neve outside them and getting stuck...maybe my default config is the cause??...i'm always changing things...

    I agree with you prodigy, it would be nice to have that option.

    here goes my interface settings (if i understood correctly)

    THANKS

    Attached Files:

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  9. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    @nff, I meant a pic of the sim itself buddy.
    thx

    yobuddy
  10. nff

    nff New Member

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    I was answering "noorbeast", sorry...like i said, i didn't had the problems prior to a new installation of the system/program, so i don't think is a problem of the physical structure itself...i know that it's within the limits.

    THANKS
  11. pipis2015

    pipis2015 over-boost

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    i am sorry but i can not understand why you think that your rig going out of travel is not a (mechanical) design error and that you think that there is something wrong with your "changed" settings.

    this is a friendly remark...please dont get me wrong.
  12. nff

    nff New Member

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    I will explain again...i know te movements are at the limits of the structure, at the very limit ...the fact is that it now get's stuck in one of the plate limits, like it doesn't have strength to move to the other opposite side...i never had that problem before i had to reinstall the system and program...i'm not saying i designed it without flaws, but this problem is new....

    ...either way, i will try to see that myself, thanks for the help
    Last edited: Jan 12, 2016
  13. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    Your settings look fine btw, I used to run my scn5 sim rig like this all the time!
    I even used a packet rate of 1.
    yobuddy
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  14. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Did you use Axis Limiting before and is that the case now?
  15. DaVinster

    DaVinster Active Member

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    I stumbled upon this thread looking for the start-up or limit options as well. A couple reasons why I was looking for this. My rig has no problem going full travel to calibrate on simtool startup but is there a way to slow it down? Despite having relatively slow acceleration in my config, the initial calibration rolls the axis quite fast which seems a little violent (too strong a word perhaps.. maybe 'harsh').

    I have all my roll and yaw axis travel limits turned down because you don't need much yaw travel, too much will make you sick and isn't realistic, and sometimes when I roll all the way I get 'stuck'. I don't feel comfortable using the full travel roll anyway as it feels like all my weight is on one side.. too much so.

    Lastly, I have a hook to hang my Oculus DK2 on when I'm finished with it and so I can get in/out of the sim without having to worry about bumping it, etc. However when it's hanging and I start up simtools, the initial calibration throws the Oculus around hanging from it's straps banging it against the monitors. If it did it slower I could keep my Oculus there and it wouldn't swing hard enough to hit anything.
    Last edited: Feb 1, 2016
  16. DaVinster

    DaVinster Active Member

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    I found a solution to my particular issue. Using the TBVST.exe utility for the SCN6 config I was able to lower the homing speed for each actuator resulting in a slow, smooth calibration. The homing speed for the SCn6's (and maybe 5's?) are stored in a firmware on each actuator and not controlled, in this case, by Simtools.

    Hope that helps someone..

    Cheers,

    DaV
  17. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    I'm not to sure this is correct, because when I wrote the homing routine, I had to select a setting for both the Speed and Acceleration.
    I chose to use 1/2 for each. If it was built in, how was I able to select any speed and acceleration for my homing routine?
    Are you sure you did not change the speed of the overall actuator?
    yobuddy
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  18. DaVinster

    DaVinster Active Member

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    Yobuddy.. yup as far as I can tell the performance is the same. The setting only seems to slow them down when it's initializing. Once it extends all actuators it does 'snap back' to the 'center' position the same old speed. I'll post a screenie of the setting and a video of it.

    Cheers,

    DaV
  19. DaVinster

    DaVinster Active Member

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    Here is the screen from the TBVST.exe utility. I have highlighted the setting that I changed. My actuators all had different values for some reason so I changed them to be all the same. I reduced the speed from 20.00 mm to 5.00. Two of my actuators had the same acceleration value as shown here but one was 20g's or something crazy like that so I changed it to match what's shown here. All my actuators are now at 5.00 mm/sec and 0.041 G

    tbvst screen.JPG

    Even after setting this, the default profiles (without capturing min/max with Tuning Center) results in crazy fast motion.. unusable really. I haven't played around with 'Velocity in pusher positioning" as I have to be very cautious what I change here. A wrong value can disable your actuator! I'm unsure if that value would slow down the 'snap back to center' speed or not as that is the same speed it was prior to me changing anything. I'd be glad to post a video of how it looks now compared to this video that had the old values.





    Cheers,

    DaV
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    Last edited: Mar 22, 2016
  20. Historiker

    Historiker Dramamine Adict Gold Contributor

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    I know this doesn't help but...my god! That simpit is cool! :cheers
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