Hi there, I find this project super interesting, as I work on a vision of a VR Dance Party.
It would be useful for me to translate my dancing skills into more lifelike animations. Much more personal and more like art than if d'I just buy some mocaps.

I am curious how precise the motion data from the sensors is.
Are there any problems with judder?
How high is the refresh rate for measurements?
Are there limitations how many K-Ceptors can me used? Watching the youtube video I thought that adding 2 shoulder sensors would give a better result when twisting the torso.

I am totally in for beta testing, where do you ship from?

    GlowBallVR
    Hi!
    This project started because I personally wanted to capture dance movements for artistic performances. And in our experience it works great for that purpose. I would love to see your version of a VR dance party with chordata!

    We are aware that in some of our videos there is some annoying latency or jitter on the captured avatar. But it is a consequence of the way the videos where done: always in a hurry. While doing some of them we discovered little bugs on the recording of the captures, that are already fixed. But we didn't had the time to go back an make the takes again.

    For a clear sample of the fidelity the system can deliver look at this live performance we did last year:

    To answer your questions:
    The sensors themselves can deliver reading at >250hz, The current limitation is they are all sharing the same bus, so you can get a 50Hz reading with a full body configuration. (edited, see post below)

    There's no limitation on the number of K-Ceptor used. In fact a nice feature of the chordata framework is that it can handle virtually any configuration of sensors. Once again the practical limitation is the bus: if you add too many sensors you might need to read them at a lower rate.
    A quick calculation gives me that you can have at least 22 K-Ceptors readed at 50Hz, but the real number might be higher. I'll do some tests and get back to you with that.

    For the Beta testing contact us by email, reminding us that you want to test a suit with the shoulders added.
    We are in Europe.

      Regarding the refresh rate, I was apparently relying on some wrong assumptions. The real capacity of the system as it is now is much bigger that what I thought.

      According to new calculations based on empirical measurements of the current suit you should be able to obtain:

      • 120 Hz with 15 K-Ceptors and 1 Hub (current default configuration)
      • 100 Hz with 17 K-Ceptors and 1 Hub (adding shoulders)
      • 65 Hz with 28 K-Ceptors and 3 Hubs (default with 5 KC for torso + 10 for the fingers)

      I'll make some real tests to validate this calculations as soon as I can.

      10 days later

      Hi again.
      I was wondering how difficult it would be to setup Chordata as a live tracker for an application like VRChat.

      That would be more for my personal enjoyment, but really cool nonetheless.

        GlowBallVR

        I'm not familiar with the VRChat sdk. Does it give you direct access to the raw properties of the bones? like rotation or translation

          i think if we can connect this to steam vr and unity , lots of similar problem will be solved

          Yeah, many people is interested on using Chordata with Unity. We would love to work on an SDK but are currently putting all our efforts on the overall stability and usability of the system.

          Rest assure that it will be one of the main tasks on future roadmaps.