That sinking feeling..

Mounted my Rift camera much higher today and found that when the platform pitches upward it puts my head through the windshield of my Waco! Still some strange positional things happening. Going to experiment with different camera heights and will report back.

Mine is placed 20cm above my head and 40cm to the right side and never had tracking problems

Interesting. I lowered my camera about ten inches lower (a few inches above belly button level) and the platform pitching now has significantly less impact on my forward/back positional tracking. Pitching up still does move me maybe two inches forward, and pitching down maybe two inches back. It's pretty minor.

I also notice that during big heave of the platform my positional tracking heaves up and down in the cockpit some even if I do my best to hold dead still.

I may be wrong, but I think the closer the tracking camera is to the roll centre of each axis, the less issues you'll have.

Now there is some potentially useful info! I was coming in to report that after a long session of tuning BFFSim in P3D for better motion and a slight relocation of my Rift camera mount I've got MUCH bigger problems again with positional tracking. I'll have to see if I can cap some video for you guys before I change it to demonstrate. When I roll hard my camera moves over to the side to the point of being partially outside the cockpit, when I pitch hard the camera moves forward and back, and when the sim heaves my camera moves up and down noticeably.

Tonight I was actually resetting the camera position several times per minute when maneuvering fairly hard to test motion.

Interesting note: I did lower the height of my pitch/roll center by 200 millimeters software side in BFF today so this could definitely be a major factor!

I was also wondering if moving the camera closer to my face would make it better, and now that you mention it my camera (which is just forward of my rudder pedals currently) is very far forward of the pitch center of rotation.

I will probably experiment tomorrow with moving the camera various different ways. If you are on the money about pitch/roll rotation center I should be able to significantly improve things. I can do a software side adjustment first for more data as well.

Changing the pitch/roll rotation center height for a 6DOF rig is not possible in SimTools AFAIK, I'm VERY anxiously awaiting SimTools 2!

well as some guy suggested on my country native forum the issue with sinking or flying through roof can be solved totally easy. just... cover up the sensor! you still can turn head but the motion part (e.g. movement forward or backward became disabled).
So now using the motion rig in Assetto Corsa i'm totally bounded to my virtual race body and neck no need of super-duper gyro for me lol

I've tried not using the sensor too. The problem is you frequently need to recentre the head position, as it drifts over time, especially with motion.

you mean in the oculus home or in the game itself? in the oculus home i need hmd only to run virtual desktop and in the game a have a key combination to center a view

I thought about losing the sensor too, but would hate to lose positional tracking and still have to recenter for yaw =(. I might try it anyway, it's certainly easy enough to do!

I tried moving my Rift camera about two feet closer to my head, tried tilting the camera level instead of angled upward, and tried moving my rotation height in BFF software up and down with no noticeable change. The only thing I didn't do yet is try mounting the camera higher and lower. That is next as far as tackling this problem but other unrelated priorities mean I probably won't mess with it this week.

PS- I also had the positional tracking "jump" my head by a good couple of feet to a wildly different position a couple times, the one I remember my head was suddenly about two feet higher and a foot to the right!

Hey folks, I just posted a somewhat related thread about my Rift Camera tracking issues on the motion sim, please check it out and see if you can help!

https://www.xsimulator.net/community/threads/oculus-rift-tracking-problems-on-motion-sim.9473/