[Madfish]

I believe that the issue with gyros is that they are not locking very well, especially considering rapid head movements / rotation. They are inert but not fixed in space. Sooner or later you'd lose your horizontal focus point. And that'd be a hazzle for "normal" people I guess.

Head tracking currently doesn't just not work well with it. It's damn irritating to me. The difference between a static screen environment and an HMD is that you're much less immerged and your brain doesn't get tricked by it. I just hate the feeling of an HMD with a tracking ratio other than 1:1 because my senses are governed by instinct and fast response from the brain and not by outside restrictions like IR tracking systems. It's just a pain to always search around the screen because your head automatically moved and found the picture out of place.

That said the ardunio solution might prove to be interesting but comes with the issues of usability and most importantly weight! It's so uncomfortable. Also keep in mind that naturalpoint with it's damn criminal attempts to monopolize the tracker market literally dampens these efforts to almost zero as you can't interface with most games. Freetrack anyone?
Also the only solution to cover the issue of even more weight is a helmet system that spreads the weight and takes away these rediculous strap solutions. However I need not tell you guys what a pain it is to wear a full helmet for hours. After all we're armchair pilots down here on the ground. :p

Add to this the issues I mentioned on the last page and you'll find that, once the euphoric feelings are gone you either want a better system or don't want to deal with the downsides anymore. For me it's that I want a better, lighter, focus sensitive and full tracking device before I can really feel comfortable with it. The only thing I could sacrifice is the eye focus part since that'd require support by the games anyways and I doubt we'll see this very soon.