Motion Simulator using the Oculus Rift

[zerax]

Hi zerax,

Sorry I didn't understand your question about the expected mechanical latency.

I mean the mechanical motion latency from movement to movement on the platform relative to what you see inside the rift. You don't want the image inside the VR world move ahead in prior to the movement of the the motion platform.

Let's say you take a left turn in iracing and the platform response into position a "few seconds" after. It will then feel as you and the platform is being dragged after the motion inside the VR world.

[tronicgr]

Hi zerax,

Sorry I didn't understand your question about the expected mechanical latency.

I mean the mechanical motion latency from movement to movement on the platform relative to what you see inside the rift. You don't want the image inside the VR world move ahead in prior to the movement of the the motion platform.

Let's say you take a left turn in iracing and the platform response into position a "few seconds" after. It will then feel as you and the platform is being dragged after the motion inside the VR world.

You can see the latency here:

https://www.youtube.com/watch?v=TCc9LFaRIh8



Its not seconds behind, maybe 1ms - 4ms.

Thanos

[tzuvela]

Hi jhordies,

I've been looking at your platform design download/file.php?id=3153&mode=view/motionDrift.png
And I hope you've made sure that your feet won't be able to slide of the platform.
With Oculus you are practically blind so it's better to make sure you can't hurt yourself accidentally.

[madmarty]

I really like what you have made.
I was always thinking about that the movement of a motion sim is a problem together with the rift.
I plan to use my sim excusively with the rift and with no screens attached.

[jhordies]

Thanks Thanos, madmarty and tzuvela

Tzuvela, you are absolutely right.
What you've seen is not the latest version of the design.
I now have integrated the exact model of the seat we will be using. (But I now have to ask authorisations to publish the picture.)
But still the legs moves might be a problem.

I already planned a big panic button easily accessible but being blind wont help in case of emergency.
I thought about covering the base with a flexible sheet of plastic to avoid coming in contact with the mechanism.
Ultimately I think I will secure the cockpit with a robe to hook before using the sim.

Thanks again

[tsaG]

Hi,

Im planning to build the same kind of 6DOF Platform, for the ORDK2. The thing I struggle with is the choice of motors. How much torque should they provide? Is 70Nm enough?

[jhordies]

Hello Tsag,

It all depends on your design, the payload and the acceleration you expect.
It is hard to say without seing your design but I can tell you what motors I ordered for a payload of 175kg, 6 motors of 205Nm with 12 rpm.
I know Thanos used bigger motors.
I would advice you to look at other designs and motor choices.
A good place to start is the Thanos' blog : http://motionsim.blogspot.be/

Good luck with your project.

[jhordies]

We made a custom version of LibOvr 0.4.1 and 0.4.2 to add the possibility to dynamically offset the rift orientation to the player seat instead of the ground.
Combined with a sensor and a motion simulator, it reduces simulator sickness, improves the sense of presence and feeling of motion (Vection).

It's a simple patch file to apply to the Oculus SDK, it doesn't affect the performances
If your game/application could benefit from a motion simulator, please apply the patch to your SDK version before compiling your game/application.

Please visit http://www.vectionvr.com

[Mertensbart20]

Hello Jerome,

Nice to see you are also keeping the X-simforum up to date. I think you will find a lot of enthousiasts for your system here. And also for your oculus-offsetsystem. Do you already have it working with the DK2?

Keep up the good work,
Bart

[jhordies]

Hi Mertensbart,

yes the stabilizer also works on DK2

Check our first video of the simulator (no tuning yet):