On my wishlist I want to put a 6 DOF motion sensor

[Mitbekommer]

Christmas is approaching.

On my wishlist I want to put a 6 DOF motion sensor for my HMZ-T1. I would like one I could plug into usb and read data from using c#.

Which device do you recommend and why?

[Chriky]

Do you want accurate positions? Because if so, the only options I know are Razer Hydra or TrackIR (or the open source equivalent which I've forgotten the name of).

From what I've read, trying to get positions out of a 6DOF tracker that uses accelerometers is a fool's errand.

[Mitbekommer]

I want to rotate around 360° so TrackIR is not working. Razer Hydra seems overkill for my goal.

Accuracy is to be around 0,2° respectively 2mm or better.

Different experiences of others are appreciated.

[Chriky]

AFAIK there's nothing cheap out there that can do 2mm precision for positioning apart from those two. I would look at mo-cap systems but they are expensive.

[Mitbekommer]

AFAIK there's nothing cheap out there that can do 2mm precision for positioning apart from those two. I would look at mo-cap systems but they are expensive.

I am not talking cheap I am talking feasible, then price. What precision do other devices offer?

[Namielus]

Mount the Trackir in the ceiling. It gives you 360 motion and you can lean pretty far to the side before it looses track.

It works.

[brantlew]

Well, if we are only talking feasiblity and price is not a concern you can contact Polhemus. They offered me a set of 4 super accurate 6DOF wireless magnetic trackers for $10,000 !! Maybe if you were extra good this year Santa will put one in your stocking.

[Fredz]

Even the accuracy of the Razer Hydra is not good enough, John Carmack said in a video that it could be off 10-20° in no time. Precise, but not accurate. What you want is a Polhemus or Ascension Technology tracker, but as brantlew said these will cost at least $2K.

Another solution would be optical tracking, but to my knowledge there is no software yet for that. A good starting point would be one or two PS Eye with custom software, but that's not an easy task to implement that and there is still the problem of line-of-sight.

There is also this solution, but there are limitations : http://www.rcgroups.com/forums/showthread.php?t=654648

[mahler]

What makes the Polhemus or Ascension Technology tracker perform so much better?

[Mitbekommer]

What precision do cheaper devices offer?

[cybereality]

The Razer Hydra offers precision within 1 degree of orientation and 1mm of position. If you are relatively close to the base station this is pretty accurate. As you get further from the base, these number start to drift. But its still an amazing device for $100 or whatever they sell for now. The main issue is that they are wired. If they were wireless it would be a different story altogether.

[Mitbekommer]

I am not like disassembling devices like that. I want some chip I can connect to usb or rs232 for which I have a pci-card to measure movement for my hmz-t1 panorama viewer and for games. As the HMZ-T1 is cable-bound anyway another cable wouldn't bother.

[Mitbekommer]

http://www.mtbs3d.com/phpBB/viewtopic.php?f=138&t=15184

seems to be the right one. But where is the guide that glues everything together. Will it work with c#?

[EdZ]

http://www.mtbs3d.com/phpBB/viewtopic.php?f=138&t=15184

seems to be the right one. But where is the guide that glues everything together. Will it work with c#?

The Adjacent Reality tracker is the one that will be shipped for head tracking with the Rift. It tracks absolute orientation, but does not track position in a usable manner.

[RoadKillGrill]

If you need just orientation on the hmz-t1 then a YEI 3-space sensor should work. I have made a little clip design to make plugging on the sensor rather easy too. They are USB /rs232 and have on-board orientation calculation capabilities.

http://tech.yostengineering.com/3-space ... g-with-udk

The sensors can be communicated with like a virtual comport so most languages that can access the serial port can get orientation data rather quickly. Making C# specific examples is on my list of tasks but we already have customers using the sensors in C# so its capable.

I have been thinking about adding a quick plugin to FreePIE in my free time, though I suspect I won't get the time until after the holidays.

[Mitbekommer]

If you need just orientation on the hmz-t1 then a YEI 3-space sensor should work. I have made a little clip design to make plugging on the sensor rather easy too. They are USB /rs232 and have on-board orientation calculation capabilities.

http://tech.yostengineering.com/3-space ... g-with-udk

The sensors can be communicated with like a virtual comport so most languages that can access the serial port can get orientation data rather quickly. Making C# specific examples is on my list of tasks but we already have customers using the sensors in C# so its capable.

I have been thinking about adding a quick plugin to FreePIE in my free time, though I suspect I won't get the time until after the holidays.

I don't understand your page. Do you offer ready-made circuitry or digital opensource schematics? If you offer former, do you ship to germany?

[RoadKillGrill]

I don't understand your page. Do you offer ready-made circuitry or digital opensource schematics? If you offer former, do you ship to germany?

Sorry for the confusion, yes we make ready-made plug and play circuitry and firmware. The supporting software is open source with examples in various languages.
The embedded cost $99 US in single orders http://tech.yostengineering.com/3-space ... y/embedded
Finally yes, we can ship to Germany.

[brantlew]

@Mitbekommer: Understand that this sensor will return accurate yaw, pitch, and roll. But not X,Y,Z coordinates.

[Mitbekommer]

@Mitbekommer: Understand that this sensor will return accurate yaw, pitch, and roll. But not X,Y,Z coordinates.

Thanks. I have already noted that.

[Lookforyourhands]

Although probably won't help you, I just thought it was interesting to discover the Nintendo Wii U tablet controller has a 6 DOF motion sensor in it.

[Mitbekommer]

To sum up, what do you suggest?

[brantlew]

Here's an old list that might be helpful. But none of these are true 6DOF except the Hydra.

http://www.mtbs3d.com/phpBB/viewtopic.p ... dup#p71541

[MarshawnMan]

man these are sick but they look like they are gonna be very expensive!!