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Building a 4DOF from the SK3 kit provided by Simukit

Discussion in 'Commercial Simulators and Peripherie' started by stargazer, Jul 19, 2018.

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  1. stargazer

    stargazer Member

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    thanks @noorbeast , I will dial the motion way down to see if it will get better. The VR was such a terrifying experience, a lot worse than the superman roller coaster at 6 flags that I've gone to! :(
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  2. axenic

    axenic Member Gold Contributor

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    Hi StarGazer ! Welcome to the real world !
    I was answering you in private, but this can come handy for someone else :

    For my understanding and my (or my relatives) experience, if you are subject to motion sickness on a moving plateform and not on a chair, it is because of the movement, induced by the plateform, seen in the headset, but not making sense on your brain.
    As an example :
    When you brake, the plateform move your head toward your wheel, you see it in the headset, but your brain wants it to be a movement of your neck. The damaging (sickening ) part is the roll. On a car, you will see your head drifting to the left and right, even if your hands still tell your brain that your wheel is right in front of you.

    So you need "motion cancellation".

    The basic idea is to attach one of your controller to your seat, near your head, visible from the camera / lighthouses, and tell the VR API to remove the movement of the controller from the computed movement of your head.
    Hence, when braking, as both your headset and your controller will move the same distance, the VR api will consider you have not moved. (Which is true, in a seat-centric referential).

    Here is the basic configuration summary :
    You will want to use steamVR and not the OculusVR api for this to work. Your rift is fully capable and recognised by the SteamVR API, so this part is easy.
    To check everything is running fine, you can start the steamVR tool, you should see yourself somewhere. (In a desert, by night I think).

    Close it.
    Install https://github.com/matzman666/OpenVR-InputEmulator this. The repo hasn't been updated in two years, but it should run ok.
    Once installed, start steamVR, then the plugin, and go to the motion compensation settings.

    Select "Use reference tracker", and pick the one you have binded near your head.

    Warning : moving the controller is trippy, to say the least... ... But it is a good way to be sure it works !

    Start your favorite game, with motion on, you should be just fine
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  3. stargazer

    stargazer Member

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    Ok, so I ran the roller coaster game again with Game Manager/Motion Profile tuned down to 40% from 100%, and at the same time always look straight ahead to the immediate track in front of me. Then, I was able to complete a run. It was still a fearful experience but I didn't get the intense nausea feeling anymore. Interestingly, my kids and their friends tried the game over the weekend and they had no issue as all. They even demanded to have the motion turned back to 100%.

    About the Oculus Rift S, when I used it on flight simulation P3D, it often gives me blurry reading of all the instrument. I often have to get closer to the panel to be able to read. Sometime moving the headset back and forth around the head also helped to make the image more clear. I thought that this is a fairly big problem for those of us who fly and cannot read the instruments. Is this blurry problem uniquely to me or others also have it? Also if you have used other VR like Valve Index and Vive Pro, do you have the same instrument reading problem???

    Another thing which is not working well on my setup is the buttkicker. I have a buttkicker gamer 2 amp and a buttkicker mini concert installed. I found that it would work for about 20min and then cut off for long period of time before it would work again for another 20min. I thought that the problem was in the amp so I installed a computer fan to help cool it down. The problem still persist after the modification. Now I think that the buttkicker mini is actually the one at fault because it felt really warm when it cut out. Does anybody have similar problem? BTW, I watched this video and bought the $10 amp there. As far as I can tell it works really well. I wish I have bought that instead of the Buttkicker gamer 2 which costed me 10 times as much.

    ButtKickerGamer2.jpg ButtKickerMini.jpg Cheap100WAmp.jpg
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    It sounds like the Buttkicker itself is being overdriven and that may be leading to thermal shutdown.

    With transducers it is all about refining the cues they give, not maxing them out, resulting in general but non distinct rumble. Are you using Game Vibe or some other software to control/tune the Buttkicker?
  5. stargazer

    stargazer Member

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    Before I had the Game Vibe working, I was driving the amp from the speaker output. Then I found the cut out problem. Now I am using Game Vibe and the cut out problem still happened. I also tried to turn the amp output down but the problem still persists.
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Please post pictures of all your Game Vibe settings.

    What volume is the Buttkicker being run, as it sounds like it could be maxed out?
  7. stargazer

    stargazer Member

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    I normally run it at 1/4 of the max volume (just to feel a light rumble on the chair) and it still cut out after every 20min. When I used the $10 amp, that one has a max of 100watt, the buttkicker mini has a max of 250watt so it suppose to handle the signal from the amp well. Especially when the amp volume was not even turned half way. Could it be that I have a defective transducer?
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Is the Buttkicker under warranty?
  9. stargazer

    stargazer Member

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    My Motion Simulator:
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    I bought it a little over a year ago so it probably out of warranty. I messaged the seller any way to see what he would said. Let wait and see.
  10. stargazer

    stargazer Member

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    I contacted the seller and the company but I couldn't get an exchange nor refund. I was able to make it somewhat working by turning the amp volume way down. Just barely above zero and I could feel a bit of rumbling for the entire of the play.

    Since I found that it was hard to read the flight instrument and text with the Rift S VR, I went and bought the HP Reverb after reading so many positive reviews about its sharpness. Now I am able to read most of the text on the instrument panel. I think the HP Reverb is much better for flight sim than the Rift S. The only problem that I have now is the difficulities with controlling the airplane's knobs and switches while using VR. It seems that there is no good way to easily control the instrument panel while using VR. I really wish that there is some kind of glove that would allow hand and finger interactions with the airplane. Otherwise, it is really really tough to enjoy VR flying.
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