Ultrasonic time-of-flight sensors

No for sure. Slam/stem + hybrid solution is future.

Blending is needed of tech to eliminate LHes for true freedom.

Here is the sensors they used for the Vive Focus.

1 Like

Lighthouse works fine…


Try them outside. Or the fact on the go setups. LH v2.0 at least removed need for LHes to see each other. But Too much sunlight messes with tracking.

Why would I try them outside? lol this aint a quest and never will be…


On the go use. Plus while at this point in time a long ways aways. Pumax is working on eventually having an AiO module.

Here is a good article to read.

Works fine if you have them, i’ve been waiting for ever after Valve to produce their LH and ship them to Pimax to finally ship them to us. It took so much time to get my HMD that i got a Samsung Odyssey+ in November, used it until March, sold it to a friend, bought a Oculus Quest, and even today i still can’t use my Pimax. No 3DoF is not acceptable, and i still would not have controllers.

Simple easy 6dof xb 360 kinect & it’s cheap.

Not sure though why hmd’s are still using 3dof internals when you can get ones with better coverage.

I agree its unacceptable. But Pimax cant even manufacture the accessories for backers let alone designing and coding a brand new locomotion system on top that. We would never see it nor any other product come from them as they would fade away into insignificance as a company that failed to deliver ANYTHING. Lets see them try and wrap their heads around face foam and a rigid headstrap before we put any more outlandish ideas in their heads.

1 Like

and i have a kinect 360 with adapter waiting in a box… might try this some time.

1 Like

** CH-101 supports a maximum sensing range of 1 meter **

range seems limited at first but it’s promising

1 Like

You still miss the idea of modular 3rdparty. They don’t need to be the ones delivering a new direction.

I do agree pimax needs to get basic options out & with Valve being potentially ready to deliver LH modules we might see some kind of traction. With core of Steam tracking; the LHes being available to oems.

At this point even a psmove like solution would be good to tie things over with colored ping pong balls.

Yes your right but maybe it could be used for the evaluation of the distance between the controller and the headset seems the chosen application

1 Like

Sonar type of ultrasound are extremely damaging to living things…

Not at the power levels a headset would be able to generate, no one is advocating taking the array from a nuclear submarine and strapping it to your head

1 Like

I found another article about this tech here: https://www.roadtovr.com/hands-on-vive-focus-6dof-controller-dev-kit/ but it seems it has its own problems.

In general ToF sensors are good for distance measuring. I imagine with some effort, you can make them track objects, but it would be prone to imprecise positioning. Like you would know the distance, but not the exact spot.

Contrary to that, with image tracking (e.g. Oculus), you know the spot exactly (in the FOV), but must compute the distance. So both techs are prone to some errors.

Lighthouses are superior in that you know the exact position from the laser sweep timing.

Sound and light should be functionally similar, just sound travels slower (but for the distances involved in roomscale is trivial) but by using 2 different frequencies instead of 2 lighthouses you should be able to get largely the same effect.

1 Like

I remember Nintendo Powerglove used I believe Ultra sonics.

This is not entirely correct, it can depend on many factors, wave amplitude and intensity are both involved, what you’re taliking about is power level, and is only involved in long distance transmission, and considering that the application we’re talking about most likely involves prolonged exposure times, it may very well be a factor…

But sonar waves are a very particular (and nasty) form of microwave, engineered to be a form of weapon.

Microwaves can have a wide range of effects, but the vast mayority of these are measurable on living cells and tissues because the tendency to cause micro bubbles to rise in liquids or, if a particular form of wave is used, cell cavitation, increased tissue temperature and DNA fragmentation…even the common today’s medical equipments used for diagnosing have some form of small adverse effects, but since their use is limited to short periods and rare frequency of application, it may be tolerable.

Recently there has been a new form of using unaudible ultrasounds in some of the most big cities parks at night to keep people and youngsters away, these sounds cause discomfort and in some cases even headaches, the current trial experimentation is already giving results with a very high success rate, without the people being aware or realizing what is the cause, because these sounds are totally inaudible.

Please don’t take such things lightly, taking references from science fiction films or wiki-disinform-pedia and most of all…without having a thorough knowledge of the matter, things are already about to get very dangerous with the advent of 5G that is in itself a very dangerous form of weaponization of the technology, regardless of whether you believe it and understand it or not …

I guess that explains all the dead babies from every single women who gets scanned during pregnancy then… no, wait…