Valve's Lighthouse: Past, Present, and Future

[@ThrillSeekerVR]

This is my favorite video of yours. Lighthouse tracking has always been so fascinating. Thanks for the vid brad :D

[@jessekoepp3928]

Cmon, label it "INSANE" like you label almost EVERYTHING, even if it clearly isn't at all, captain clickbait.

[@SaysSim0n]

@@jessekoepp3928 nailed it right there lmao

[@ThrillSeekerVR]

@@jessekoepp3928 Your toxicity is INSANE.

[@waterwaterdauterdauter6526]

@@jessekoepp3928 You obviously have no clue how KZbin works. you're a joke. the content always follows up every title and more. the clickbait also isn't nearly as bad as anything like linus or others. at least i know exactly what im clicking on and the videos always deliver. he tries his hardest and its obvious

[@jessekoepp3928]

@@ThrillSeekerVR OMG you responded, that was INSANE! Please keep using every low T puffs favorite word "toxic", it's INSANE! Cmon Commander Clickbait, respond with more INSANE "comebacks". INSANE!!!!

[@Cptn.Viridian]

19:30 That was this sounds is that we might be able to get a "seamless" hybrid tracking system, where you *can* have base stations where you want high accuracy, but it also functions without base stations in a lower quality inside out mode. As much as I lament how unportable the index is, the incredible tracking quality is something I can't give up, and this system seems like the perfect compromise.

[@UNSCPILOT]

Also having one as a fallback from the other, such as when you get in one of those weird poses your basestations can't see correctly

[@thunderbolt10031]

The 2.0 stations are fascinating, but in a way, it compromises reliability for higher convenience, which I'd argue makes them more inconvenient over 1.0s, but if you have 3 or more stations, that doesn't matter because you never had a choice. From my experience, the 1.0 stations always provided outstanding tracking performance and do have an upper hand on the 2.0s because 1.0s given their greater simplicity in the tracking system, provides better performance against reflections. I have weird tracking quirks with my 2.0s that I never experienced with my 1.0s and it's because of a few small pieces of furniture in my room that messes with the tracking. With a 1.0, you're only worrying with one laser sweep at a time where 2.0s are transmitting, channel data and such, which makes it far more susceptible to tracking issues if you introduce a slightly reflective surface in the play space. The 1.0s in my opinion don't get the credit they deserve because they are outstanding stations if you're looking for a lighthouse system, are on a budget and don't plan to use more than two stations. I see Quest users buying 2.0 stations all the time and I scratch my head over it because 1.0s would have done the job just as well, at a cheaper cost. I rate 1.0s.

[@thechillingdude5369]

The thing at 16:00 is most likely a so called 'PSD' aka. Position Sensitive Device, used in precision laser tracking metrology applications. I have worked with those for the last 15+ years. It most likely boils down to having lighthouses without rotors, but rather fixed wide angle laser cones. Removing moving parts greatly reduces wear and acoustic noise. The PSD would be behind a small wide anlge 'fish eye' lens, being able to 'see' from which direction the light comes in. Several of those dispersed over the exterior like the classical photodiodes would allow for parallax/perspective/triangulation/trilateration, which is necessary for rangefinding. The individual emitters would need precise timing amongst them since a single PSD only works well if hit by one light source.

[@adr2t]

Oh I figure the parallax would be instead of sending 3 pluses like they do - you would just do one instead and split the light information base on how it hits the individual sensors. It would remove the need for rotors like you said, but also makes it means it doesnt have to be too complex with light bending.. aka sending the light in the cone shape as you said.

[@mikeb3172]

May work by just using different pulse widths... If light is detected from one angle, now how long was the light on for in ms...etc

[@jakejuracka]

That makes a lot of sense! If they can make the laser cone emitter on the base station low power enough, I wonder if they can make a battery powered base station that, like a battery powereed security camera, only needs to be charged every few months! Imagine a small, AA powered box you can put up in several areas of your house that can give you the tracking fidelity of base stations without the need for any wires!

[@SadlyItsBradley]

They do mention use of a PSD, bi-cell or quad cell for this to happen. So they can go either way! I ended up focusing on the quad cell diode because the patent images definitely shown that config more. Either way, really enjoyed the flow of comments in this thread!

[@thechillingdude5369]

@@SadlyItsBradley I'd like to know why they use multicell PSDs, the ones I worked with were technically single celled ones. Their readout was analog, basically all 4 sides of the square substrate had one signal output (plus ground) going into the pre-amp and then ADC. But those were struck by a focused laser beam, mirrored back via a retroreflector mounted to the tracked target / measurement probe. I can only guess that they might have the polarisation filters everyone talks about. Those might even discriminate the axial rotation angle (roll^^) from one single solid-state-lighthouse. I kinda like where this might be leading to, heh :D In the end, all hose ideas can be used in multiple ways, it's just a matter figuring out what's the 'best' way.

[@ballfun]

This imply there's a heavymansion tracking somewhere out there

[@Dogtorbox]

I’m more looking forward to DarkTent tracking, I hear it’s more mobile and doesn’t depend on lasers

[@EvKem]

Still sitting on my hands for the Foghorn tracking drop.

[@Shadow__X]

​@@EvKem nolo uses ultrasound, that could be called foghorn

[@SoggyMicrowaveNugget]

Massive castle tracking

[@Dogtorbox]

@@SoggyMicrowaveNugget I say sir you’ve gone too far!

[@Tezla_Insanity]

Can't wait for the Lighthouse 2.0: Episode 1, to release!

[@d-leb]

This was a great overview! I would love to see more content about things like this. I think it can really help the community not only appreciate the technology we currently have more, but also understand the challenges that developers have to move forward.

[@notnullnotvoid]

If they can get rid of the motor and make a solid-state base station system, especially if the base stations themselves can become smaller and lighter in the process (even the 2.0s are still kinda heavy), it will be a game changer. I'm glad to see Valve continuing to push the idea forward instead of giving up and using camera tracking like everyone else.

[@0x0michael]

Lighthouse Alyx

[@johnsaunders6510]

Thank you for that detailed explanation of how light houses work. Very interesting.

[@Zetaphor]

Been using Logitech trackballs for 15+ years. Glad to see someone else realizing their potential. FYI you can get a 3D printed stand for the Ergo+ to raise it to 60 degrees

[@nobsvr]

I've always wondered how those things worked. This was super informative, thank you for going over this. I always love learning more about VR tech from your videos

[@hubaswift7640]

Some of the arcade games I have repaired have used that same quad photodiode for gun/aim tracking, such as Jurassic Park Lost World. Another arcade game, Rabbids in Hollywood, actually uses the sixense electromagnet tracking system for their guns. I wonder if that tech will ever find a place in VR since the fall through with oculus.

[@SadlyItsBradley]

Oh wow that’s pretty cool!

[@Dazbii]

I've had an idea I haven't had time to try prototyping yet, but I think that electromagnet tracking system could potentially scale down nicely for finger tracking. If you were to put the source electromagnet say on the palm or back of the hand, and electromagnetic sensors near each fingertip, that should solve the position of the fingers very accurately. It should be able to capture things like thumb position and finger splay with much less difficulty than something like capacitive sensors or flex sensors. And I don't think it would have issues with occlusion like camera-based tracking has. I'm just not 100% sure yet whether the physics scales down to work with sensors/emitters of the size needed at the distances needed

[@hubaswift7640]

@@Dazbii I've had literally that exact same idea verbatim haha! Edit: Another Idea that I've had (that may or may not work well) would be to put the electromagnetic transmitter on the headset itself. The headset would use inside out tracking, and the fullbody and finger tracking would be done through electromagnetism. Now you have full tracking wherever you go without occlusion issues! In reality though, I would imagine that it would be difficult to get both technologies working seamlessly together, and to fit the transmitter in the headset. While the receivers I've seen get pretty small, the transmitters generally are much larger.

[@rfc5718]

Been using lighthouse since days of Vive Pre, still using lighthouse today. Steamworks dev here with several years of experience building prototype steamVR controllers, thoroughly enjoyed your video and collection of historical pieces Keep doing what you are doing it's very welcome 🍰

[@GoldSrc_]

That quad photodiode reminded me of how early Philips single-beam CD players achieved tracking by measuring a shift between 4 cells. This is just additional info about focusing for those who care. For focusing CD players use a cylindrical lens just before the photodiodes that distorts the beam when it isn't in focus. If it's out of focus one way, cells A and C will receive more light than cells B and D, and vice versa; this will send either a + or - voltage to the focus coils to move the lens up or down to compensate. But when focus is perfect, a circle will form, and all A, B, C, and D cells will receive the same amount of light. Haven't fixed a CD player in over 10 years, but that's what I remember from the theory lol.

[@spry_guy]

I enjoyed this video very much. Color me a fan of lighthouse tracking.

[@LordLiquidBaconII]

It's nice to hear that Alan Yates is still at Valve. I was wondering what his current projects are

[@zardozx1370]

very important for understanding the Valve Lighthouses - many many thanks - Brad + all the best the next months + more

[@Omikronik]

This was a good explanation of how lighthouse tracking works, i learned a good bit, thanks

[@Jianju69]

Thanks for this. So helpful to get some insights into how the tech works.

[@Amni3D]

This explains the Lighthouse revisions really well. I understand now- my brain is slightly more wrinkled.

[@do-gay-be-crime]

Fresh coffee and a fresh Brad video. Day made.

[@VRBug]

Oh nice! been waiting for this video to drop 👍

[@parsec3d]

I was able to use 4 HTC vives on the same space at events, the trick was using just 2 base stations pointing in the same direction synced with the cable.

[@attackxxx]

I love lighthouses and hope they can provide full body tracking too

[@zig131]

Well the video title is kind of misleading. The takeaway is that Lighthouse doesn't seem to have a future at Valve other than some token backwards compatibility as a side-effect of Valve's dedication to photodiodes.

[@SadlyItsBradley]

Some people theorize this new tech could allow for new types of base stations. I just didn’t want to go deep enough to say so because the research I had shown nothing solid for that yet.

[@hercion]

logged into google just to praise your video with a thumbs up! this was a great rush through lighthouse history. only complaint: you did not show the internals of the basestation 2. anyway, please make more such more technical videos! THANK YOU!

[@SadlyItsBradley]

I wanted to open one of my own. But once I found out I’d need some advanced things to do I noped out… I should have just grabbed some pics off the net

[@ReavoEnd]

@@SadlyItsBradley Bet you could steal our deconstructed one, next time you're around...

[@bigbangerz5856]

good one Brad, good work, good description, good job....

[@AlRoderick]

Those quad photodiodes are very similar to what's in a CD player (and DVD and Blu-ray) it can be used to sense if the reflected laser off the disc is in focus and centered. So it's possible that Valve has repurposed a diode design that's complex but still extremely cheap because they're been making them since the 80s.

[@localmanmark1]

Top work. Very informative

[@FEFELAND]

22:42 Yep, thanks for explaining.

[@N7-alpha]

As a life time track ball user I agree they are amazing .

[@rosa89n20]

I do always wonder the tech behind that little black box, now I know and appreciate it more. Thanks

[@mikeb3172]

The angle sensitive photodiodes + the light scatter detector is a big improvement. More accuracy, and less reflection effect from shiny objects.

[@EvKem]

Thank you for another video brad ;3

[@Frrk]

Super interesting stuff, thanks for sharing. I always found the lighthouse technology fascinating!

[@lkewis]

Stellar video, fascinating content!!

[@bluebell1]

Brad, that was a great video! I learned so much! Thank you!

[@torempilor]

Great video! Very informative

[@DerSolinski]

LH tracking is my favorite high speed and accurate tracking method. I also love my LH v1 ones since they are the most high tech I own.

[@sokola311]

Brilliant!! Thank you! I currently use a modded Samsung Odessey +. The next Valve VR helmet is exactly what I am waiting for unless HP comes out with an OLED version of the G2.

[@paz_e_amor_xo]

I want more Pappy Bradley vr history fun time!

[@Perenbarn]

Damn finally know wtf those things are actually doing. The term "lighthouse" makes a lot more sense now.

[@LimbaZero]

When LH1 come out with original vive I can't remember how many times I had to tell others that they are lighthouses and doing lighthouse things :) Basically others also think those were some kind of cameras like oculus had.

[@claybomb1064]

I love lighthouses. I hope they never die.

[@c64cosmin]

That was such a good engineering candy. Thank you very much!

[@OrangeC7]

I knew that lighthouses had rotating parts but man is this technology mindblowingly fascinating. Somehow I find it more fascinating than SLaM tracking even though SLaM is more technically difficult to achieve.

[@kurousagi1339]

Appreciate the long video. Your passion really shows through and it gets me excited too! 😃

[@proffmongo]

I've been using trackballs for over 13 years. I even use the the trackball mouse on laptops!!!

[@DasJev]

I think the most important thing you may have overlooked is that by using polirized light filter, they would also elimanate the reflection issues with this system. Mirrors, reflective floor and object would be less of an issue. Thats so far the biggest downside for the lighthouse system, something at which visual systems are a lot better actually.

[@ralf7823]

I see "Valve" and i insta click. Thanks for keeping us informed :)

[@rohscx]

Great video Brad, I thought I knew how the light house system functioned, but you are on another level 🙇‍♀️

[@moncimoov]

i tried 1.0 and 2.0. i love it both ❤

[@coffeebreakhero3743]

I really hope there will be an INDEX 2, PCVR-only, lighthouse based headset. I don't wanna pay for extra hardware like chips... and I don't want unnecessary components on my head. Look at what bigscreen is doing! surely there's a more game-oriented higher fov middle ground solution! Something between index and bigscreen. Investors need to realize there are a few different markets to capitalize on... not just what facebook head-dives into.

[@pastelthedevil2662]

It is pretty freaking cool man. It's wild the layers and layers that goes into all this. Awesome video man, really top-notch work. This is the kind of thing I love to know about.

[@StarkTrist]

Interesting, cool to hear about this tech

[@jasonleong5074]

Awwww thanks for the shout-out to both the companies I'm involved with. Tundra and Triad. TnT. Lol

[@NinetooNine]

I am a little surprised you didn't mention that the most significant advantage of making the controllers mini lighthouses is that you would then need only a single base station for the whole setup to work. Especially if you put diodes all the way around the headset. Another advantage that should be mentioned is that by making the diodes able to sense the directionality of the laser pulse, you make the system way more flexible. For instance, the original lighthouses were limited on where to put them in the room. These would not be like that at all. Where you positioned them would be a lot more flexible. Lastly, I would be shocked if they didn't make this new base station double as a wifi 7 router that must be plugged into your computer. Allowing for a single lighthouse that could act as both your positioning system and your communication hub to stream the games from your PC.

[@DASPRiD]

The worst thing I hear from some people about lighthouses is when they refer to them as "sensors", while they are actually emitters. Technically speaking, the Valve Index is actually inside-out tracked.

[@CupOfNoodlesMusic]

I understand a bit better why I want to upgrade from my 1.0s on my walls now haha Great video, awesome to understand what's going on under the hood.

[@ZoKKeRFreAK]

I just hope the 1.0s are still gonna be supported in the near future. Their range and having only 2 is totally fine for me.

[@lockiegarnett4248]

Love it, thanks Brad!

[@neonvoid]

super cool

[@KnightMD]

Anyone who played bow and arrow games, or billiards games (eg Sportbar VR) knows how essential lighthouse tracking is for finding the controller behind your head or next to your head. The only way I see inside out working is if the controllers have cameras to track themselves in 3D space.

[@SlavaBagmut]

Wow video is shot using HDR and it looks so good on mini led iPad! Bright colors are almost blinding you!

[@LhunVideo]

Yum. More info. You posted this 6 minutes ago and it's Overr 20 minutes long, so I hope to hear you talk about how the basestations used harvested 15,000rpm motors from Seagate cheetah drives!

[@SadlyItsBradley]

I mentioned they used hard drives in the early ones. But didn't mention this exact tidbit

[@LhunVideo]

​@SadlyItsBradley was not disappointed! You could fix the early ones by buying the old drives that died for other reasons. Plus they're a great source of high powered magnets lol

[@RyanR3STL3SS]

💚Fascinating work Brad! Thanks for breaking down this highly technical discussion, you are a master at it!

[@OliNorwell]

I assume like everyone else I was watching this thinking - "please, Brad, tell me that my 5 expensive base stations won't be obsolete by the end of the year!??"

[@Maggashi]

Love this video, very facilitating

[@LimbaZero]

I still use LH1.0 with cable. My LH mounting points are not optimal for that IR link because they need to have unrestricted line of sight. Basically I had to mount them too low but cable was enough long to be routed down the floor and I didn't need to make shortcuts. Only one problem was my ceiling light that I needed to change to non reflective material one. Older light did reflection of one lighthouse so I have about cone from that light through play space where headset and controllers go crazy.

[@kaputkittie]

Always love looking at my basestations through the quest 2. You can see it spinning.

[@Edsdrafts]

Thanks for sharing. I am still patiently waiting for Valve Deckard even though I probably should just get Index and start playing...

[@lporwol]

I always wondered how the valve's lighthouse works... now I know, and it is freakin' cool, laser beams! :)

[@SmokeyMesa]

I've been a trackball fan boy for decades.

[@exodous02]

Had no idea how lighthouses worked, I just knew they worked way better than the cameras on the stand alone headsets. Can't wait for your next video, I have used immersed but using a wired headset has to be better.

[@float32]

Actually, the inside out cameras have much higher accuracy. See the research paper “Comparing the Accuracy and Precision of SteamVR Tracking 2.0 and Oculus Quest 2 in a Room Scale Setup” > The results reveal a significantly higher accuracy for the Oculus Quest 2 compared to SteamVR Tracking in the height of a tracked object. Furthermore, the Oculus Quest 2 tracks its position with substantially higher precision than SteamVR Tracking.

[@float32]

@@Steam_VR that’s not my opinion. It’s a literal research paper where they measure it. Any reference?

[@Steam_VR]

@@float32 I cannot give you a link to a YT video, because it will probably will be taken down, but the controllers and headsets doesn't have a margin of error of 2mm, literally anyone with a Lighthouse tracked device can test that, and I'm telling you, the Vive trackers, due to the small size and number of photodiodes are way less precise, specially the farther away that you are from the base stations.

[@float32]

@@Steam_VR just put the video id, not the full link.

[@Steam_VR]

@@float32 htt ps: // youtu. be/Uzv2H3PDPDg

[@DizzyCGA]

I'd really like maybe a wifi tracking thing like Slime, so you can occlude them, but it uses the moments it sees a base station to reconfirm its positioning and calibrate

[@Leynad778]

I just sent back a Valve basestation 2.0 because it was jittering. Seems like a common problem especially with the 8KX if you have a motion-rig with actuators causing some sort of EMI (electromagnetic interference) and even using four stations doesn't solve it. Two basestation 1.0 work btw. and probably the reason why they are still quite expensive if you buy used ones.

[@DMan-ud6bt]

I've known about the Lighthouse technology, probably at least in part because of Brad, since long before upgrading to the Index, but this was still an interesting video to watch.

[@alganbordm.5915]

That was super interesting, I find it realy cool to finaly understand the base station better... I know that Meta have kill there good old traking system that was used with the old Oculus rift, but I am curious to know what was the big difference betwen the 2 method.... I kind of feel this thechnology was having also a lot of potential, specialy on the enegy cost, went a controler could survive month of use on a signe AA battery

[@MeMe-us5ns]

loved this video, really interesting uwu thanks

[@tomdchi12]

Frickin' laser beams! As much as there's cool technology on the receiving end, I'm sort of amazed that there isn't an "electronic", "variable polarizer based" or "solid state" solution (I'm using quotes because I'm just pulling science words and I don't really know) for the base station that would get rid of the spinny mirrors.

[@SadlyItsBradley]

In past talks, Alan Yates did say MEMS or electronically variable optics could make a solid state lighthouse. Which truly would be amazing for people who still enjoy and partake in such tech

[@dunningkruger13]

Very interesting, another great video.

[@eon5323]

Would be interesting to see Meta price match Vision Pro and show us what they can do with the same price point. Varifocal lenses, wider fov, battery life, theres a lot of features Vision Pro is still 'missing' they could capitalize on.

[@rybread69]

IT's BRAD

[@SynnekoNya]

Honestly, I had been thinking, if there was a way to improve upon tracking as well, came across your video all because of some lingering thoughts I had about "what if some individuals managed to crack an even better or improved tracking solution to the lighthouses". I honestly would be more than hyped to hear if people were creating more reliable 3rd party lighthouses kind of like how we have these headsets and trackers. It's just something I love about what the community and Valve have, this opensource world is just so much more better, and also enables more curious individuals to take a shot at making some new technology... Unlike facebook which I officially will call the IOI of our world from now on XD

[@CrunchyTire]

That giant cable between the base stations was still some of the best tracking for me

[@Green0Photon]

Hi Brad

[@SadlyItsBradley]

hi green

[@longerthanthirtycharacters]

@@SadlyItsBradley I see you've met my good friend the fucking color green

[@tristanwegner]

It is really nice to show them running with a camera without IR filter, but it is actually not good for the rotor to be moved while spun up, especially if of rotate the boxes, as the gyroscopic forces can added much more force on the bearings than normal gravity. The manual also warns against moving them while spinning. Alan Yates actually said they even have sensors to detect such disturbance and turn of the laser, so better to transmit not at all than to transmit bad information. You can actually see the laser turning off from your hand movement sometimes.

[@Tenchinu]

been waiting for a Lighthouse 3.0 for a while now. It is cumbersome and expensive, but for millimetrical precision... don't know what else could be better. Guess that, combined with a tracking suit... if you aint a plebe :(

[@joaquinvelasquez6252]

Cool! Dev of the kennect (Xbox) would be interesting too!😊

[@sultanofsick]

I'm gonna go look at my base stations and the room while they're on with my IR camera now. I don't know why I never thought of that before, I knew they were "laser based" and since I can't see them that means they pretty much have to be IR.

[@sultanofsick]

Report: They move REALLY fast, so it's not that interesting actually. Kinda just ends up looking like a strobe light with a little bit of a pattern to it on the wall nearby. And they are decently powerful so it blooms. I guess I was hoping to see like, literally the scan lines as the swept like it's a spy movie or something. Maybe if I had a fog machine :D

[@gamingclan4651]

you could use photo diode to track the controllers with ir lights coming from the like the quest but not with cameras seeing them. also have accelerometers so that atleast it has a rough position of where the controller is when outside the headset field of view. then do head tracking with cameras backed up by an accelerometer and gyroscope.

[@JosephAuslander]

thank you for this

[@majidsiddiqui2906]

Great video thanks👍

[@Kitten-Master]

Excellent video. Personally I agree with valve about tracking quality being priority. I'd love a next gen system to provide even faster update rates and higher scalability. To for example turn my entire house into a tracked space. Though the lighthouses will need to be cheaper. It still baffles me that the gen2 lighthouses cost more than the gen1 despite being simpler internally. Ideally I'd ditch tracking pucks entirely for full body tracking and wear a full body suit with photodiode tracking. I've read that in theory you can get a track with as few as 3 diodes. So small groups of diodes in a rigid cluster combined with inertia sensors tiled around the suit should provide an amazing experience.. Need to get better wireless headset tech though. Maybe I'll just have to wear a backpack with batteries.

[@litrasp4481]

i cant belive the first tracking system for vr invented is literally still the best one

[@Steam_VR]

23 minutes! let's fucking gooooo!

[@JPWestmas]

If I had to choice to hang up or stand up fewer tracking systems in a room verses putting on a tracking suit, I would choose the lighthouse style.

[@chrisfratz]

I've been using my 1.0 Lighthouses since I got them in the OG Vive I bought off a VRC friend last year just for my FBT on my quest 2, I was using the Vive but then the cable died a few months later. And I will still be using them when I get an Index because I can save a bit of money and they still work perfectly well.

[@heartbroken3344]

You can still use your trackers even with quest 2, will only require you to install space calibrator and then calibrate everytime you want to use them together, better than nothing

[@chrisfratz]

@@heartbroken3344 I know, and I've been doing they, but recently I've been getting crummy results

[@Vash63]

Good video, I like the detailed chapters so I can skip the old stuff, and lack of annoying sponsored segments. Please don't upload in HDR for videos that don't need it though. On my Pixel at least it forces the brightness/color to follow your video's mastering, meaning if i am in a dark room or have my phone set at low brightness the video is super bright and vibrant compared to everything else.

[@Nerdtron44]

Very interesting video ! When I got my og vive in 2018, I was impressed by the precision of the tracking, I didn't though you could do precision shooting in VR. The way they simplified the system is very clever. Logically the 2.0 basestations must have been quieter and more reliable since they only have 1 motor and no IR blaster but they are in fact noisier and seems less reliable from the bad experiences I read, I am very curious to know why. I switched from 2x 1.0 basestations to 3x 2.0 to fix a dead spot but I think I will go back to the 1.0 basestations because of the annoying noise of the 2.0 basestations, especially with the (excellent) off-ear speakers of the index. It's a shame I have to go back to an older tracking system to get a better VR experience. Out of curiosity and for personal challenge, I am trying to make a photodiode amplifier to see the IR signal on an oscilloscope. I am able to see the pulses and modulation (1.8MHz) of the 1.0 basestations but the 2.0 is on an other level, I need a faster op-amp.

[@Rectus_]

Trackballs are cool!