The Worst Wearable Computer
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- Опубліковано 28 вер 2024
- You can make a HUD with a transparent OLED - if you want it to suck.
The first 1,000 people to use this link will get a 1 month free trial of Skillshare: skl.sh/zackfre...
I get asked a LOT to use a TOLED, a crystal-clear display, to make a cheap wearable heads-up display project based on the Tenex volumetric display. So I did! The only problem is that IT DOESN'T WORK BECAUSE THE DISPLAY IS ONE INCH FROM MY EYE.
How did I make this electronics project? How did I design the headset? Why doesn't it work, and why are you wrong when you think you can make it work? But most importantly, why DOES the Optigon work?! All will be revealed.
STL's: thangs.com/Zac...
⚠ Do not make this project! It sucks! ⚠
Bill of materials:
📺 Clear OLED Display: amzn.to/3rc1nhp
🍞 Better Driver Board: bit.ly/3zELwe3
🕊 Feather NRF52: amzn.to/3id9JkJ
🔌 Super-flexible silicone wire: amzn.to/3iRpVsj
🔥 ChipQuik (for desoldering header): amzn.to/2WrmoJC
🔋 Sticky Battery: amzn.to/3hJTmNs
🔌 Cable: amzn.to/36HA84G and amzn.to/3kpbvSo
🖨 Prusament Galaxy Black: amzn.to/3kWYik9
😵 Did the HypnoDisk kick in? Well, support my projects and watch stream replays at / zackfreedman
Hang out with me: / discord
Twitter: / zackfreedman
Instagram: instagr.am/zac...
My printer is an E3D Toolchanger! I really need to get that affiliate link. You'll see a lot more of it.
😎 Sean Hodgins's Tenex Volumetric Display: • TENEX Solid State Volu...
Archival footage from "How the Eye Functions" by Karl Kurt, released into the public domain by the Prelinger Archives
Anatomical drawings released into the public domain by the Wikimedia Foundation
Interference SFX from Partners in Rhyme
All other SFX from www.zapsplat.com
Soundtrack:
"Some Breaks" - Gramatik
"Double the Daily Dose" - Revolution Void
"Come On Let's Go" - Le Gang
"Happy Song" - Taz Lazuli
"Funk it Down" - Gramatik
"Friday" - The Passion HiFi
"Keep On Going" - Joakim Karud
Guys, you should totally watch every one of this guys videos. Also, I seem to be missing a large chunk of money
I already have (90% of them are amazing and so are the other 10%)!
This video was a fail... you tube shows 18:45 but the first half is just static... reload needed?
My bank account is also mysteriously low..
@@CollinBaillie Same! I am really confused what's going on. The video is just blank at those portions!
Probably just a glitch? Can’t believe someone would upload a half blank video smh
same. the skillshare was 1 month free trial or 30% off for a year if i bought today
Jesus. It's like he didn't even think to put a multiverse in between his eye and the display. How could he be so obtuse?
Yeah! gravitational lensing would have taken care of this "problem" so easily!!!!!
“What…What did you call me?”
Or you could take the easy way out and engineer a synthetic eye to replace your own.
BTW, second lens after the display
Just create a little universe of people working for you to shoot photons straight, you know, kind of slavery with extra steps.
So you want to add a SECOND lens in front of the display to pre-un-distort the real world? Won't work either. The field of view and focal point of each eye will be different, so it'll feel like you're cross-eyed.
While you're here, watch Sean's video! ua-cam.com/video/sVv1oc14X1w/v-deo.html
damn it! I scrolled down here to suggest this!
Put lenses on the other eye as well 🧠
oh ok makes sense, thanks!
What if you are already cross-eyed?
Still not worth limiting your field of view, and the added bulk of 2 lens. The entire point was a less bulky display, and this shows that's not possible.
@@NicholasMarshall how about higher index materials?
Zack: "let's put a lens on my eye"
Me, blind as heck with my dummy thicc glasses: pathetic
I was getting hopeful there when he started talking about a lens being used... after an allergy induced microstroke about 8 years ago, my rx on my left eye is about 4 points off of my right eye. but I am so right eye dominant I generally do not notice. still the difference means I would have to get custom glasses made if I ever wanted to use HUD or VR... I was starting to get hopeful when he started about using a lens in conjunction with the display. I would absolutely talk to my eye doc about a set of glasses where the left eye had a very close focal point if the project could work.
@@mattlewandowski73 what do you mean custom glasses made? I just wear my glasses in VR normally, and both my eyes are pretty different prescriptions
You merely adopted the bluriness, I was born in it!
@@marcusborderlands6177 he needs glasses that are essentially non prescrip on one eye, and the other eye needs to be prescrip. so one curved lens one flat lens, 99% of frames are not going to allow for that i.e. custom
If it looks cool and doesn’t work at least it’s cool, if it looks lame and doesn’t work it’s worthless. This fits the first one for sure
It could be a interesting cosplay prop...
Yeah, it could be useful for cosplay/costumes where you actually want others to see what's on the display, and its not actually supposed to be useful.
It does work.
Create wearable display.
Wearable display is not visible to wearer.
Create many wearable and wireless displays.
Force everyone around you to wear them.
Voila, physics bypassed.
Jokes on you, my near-sightedness makes things clear only an inch from my eyes!
I can look myself in the eye on a bright day... I can clearly focus on the reflection of my eyes in my glasses. Maybe Zack should change his eyeball out for a screen, and use a curved reflector to be able to focus the image back at the screen, which is also a sensor. Easy.
Haha, yep, I'm pretty much the same way. Downside is it's like having a lens between the display and the eye for a normal person, the real world is a total blur.
Than this would be perfect to put under your glasses
@@IM2awsme maybe, but with the distance between my eyes and the lenses, it’d either have to be flexible or curved to fit comfortably
@@CollinBaillie Hey, optician here :D Given that the inside of your glasses act as a mirror, the actual distance your eyes have to focus on gets doubled. This makes a huuuge difference close to your eye because the needed refractive power gets exponentially increased the closer you get. You can calculate this: Refraction needed= 1/Distance in metres. Glasses should have a distance of about 15mm to your eyes requiring 66,67 dpt of refraction to see the lens itself. When looking into your reflection you only need 33,33 dpt. Exactly like he said, its physically impossible to make that screen work with our current understanding of optics.
The intro is already golden
Thanks! This one took a lot of development, it had to be a certain length for some reason
Not just the intro the whole vid
agreed
@@ZackFreedman seems like the video got demonetized anyway. they probably did it out of spite.
I know, right?
Seeing this live was cool, but seeing this condensed video was even better, wow.
Same i feel like we are in on the build now
K
I had my screen 2 inches away from my face when the disk dissapeared and gwen was staring into my soul
'No cones, just lines' sounds like an album title
I feel like this is a perfect build to mod into a scouter from DBZ.
How much would it cost me each time I crush one of them while yelling "OVER NINE THOUSAND"?
@@RemedyElixir enough for me to want to star a business even if you were the sole customer
today i learned that contact lens displays will never be a reality...
Not neccesarily. Just need a way for the contact lens to always emit light in one direction. Like maybe thats impossible, but it also might not be.
Maybe the edge of the contact lenses is the display and the middle part of the contact lens is the lens that display the image
@@jetison333 There's another technology we already have that produces light in nearly-perfect parallel rays.
Usually we're told _not_ to point those at our eyes, though.
If the issue is overlapping "rays" and the emitter sits right at our lense, in other words: There is no space for the rays to overlap, shouldn't that work?
Nay. Just interrupt the optic nerve and hack a signal into it. Eventually.
Hey Zach, what if you used a frenell lense to parallelize the light from the display. To fix the room light issue, use a defocusing frenell lense to create a parallel light from the room, but having the display overlayed?
This.
i am extremely myopic so i can bring the display almost up to my eye and still be able to focus on the disk my nose can literally be touching the screen so no i wouldn't say no one. i would say most people. That being said i can't see far away anyway without corrective lenses so it doesn't really make much a difference the real world is blurry either way
Make a corrective lens that goes behind the display. There. Problem solved. You look through a display at the real world - the real world is corrected. You look at the display - the display is not corrected.
I am withyou as well. and am used to focusing that close to my face
Zack: Thanks for the clear explanation. I'm using it for my Georgia Tech class. One you thing you might cover is the light efficiency of these different optics. One of the reasons it is so hard to get a useful "see through" head worn display for outdoors is the loss of light from the beam splitters. In your example with Glass, the beam splitter is 50% reflective, and the image goes through it twice, meaning that 75% of the light is lost from that process (and then there is the efficiency of the LCOS display). All the "transparent" displays have this problem - some much worse than others. The other problem, as you know from the Moverio you wear, is that the beam splitter looks like a grey rectangle in front of your eye all the time, which is annoying. You can make it less gray by making it more transparent, but then the efficiency is even worse! Grumble. We really need a VERY bright microdisplay. Do you know of any very bright hackable modules? I'm looking for one to put into a scuba mask for our dolphin research.
For future reference:
(Present) I _yeet_
(Past/Imperfect) I _was yeeting_
(Past/Perfect) I _yote_
(Pluperfect) I _have yought_
(Future) I _will yeet_
(Future Perfect) I _will have yought_
Hey Zack, awesome video! It was great watching it come together on the stream, and you explained it all really well here. Btw, where are you getting those micro displays you were talking about, id love to get my hands on some.
I think if you click somewhere it pulls up a parts list in UA-cam. Just check the description, I guess.
Hi @cyno0_ , Were you able to find the display? I would like to get it as well. Couldn't find it anywhere.
Would be great if you still have the link and could share it. Thanks.
I HATE that I discovered Zack's channel a few months ago. I wish I discovered it much later. That way I could binge watch gazillions of hours of backlog.... All I can do right now is to watch them more than once. Already started this.
You should see the stack of glass on a HUD to remove all color lengths from the projected image and display only green, but still allow you to “see through” it without loosing any color lengths from the real world view in front.
I hope someone (not me, too much work, unless?) just out of spite invents an OLED-type display that can emit collimated LASER light just because. (Might be good for maskless photolithography if it can be done)
Quick question, @Zack Freedman, would a truly transparent OLED display be possible if one put a lens on the inner part of the display to focus the display itself... and a lens on the outer part to bring the rest of the world into focus?
I was thinking this too! I wonder if that works?
"put a lens between the eye and the display... makes the world impossible to see" okay, but like... mechanism to move the lens in and out of position? to switch from the world to the HUD like a fckin video game pause menu? ... actually that sounds fuckin dope, lemme get in on that-
10/10 went to Zack's patreon and gave him all my life savings 😵
Good. GOOD!!
Huh, I don't remember any part of the video where he told us to do that.
@@2aryanpro never claimed he did, but I must have been so impressed with this video I had the overwhelming urge to donate all my money to his patreon
The video did kind of start abruptly.. no intro or anything. Must have been gaming the UA-cam filtering algorithm or something... I get some sort of nagging sub-conscious thoughts about Zack swearing at UA-cam.. something weird.
All hail the hypnotoad!
WDYM!!!??
at 16:04, you just explained how tech like the google glass and your device ARE transparent wearables!!
Other than that complete twist, good vid! Really good explanations! Gives me hope that one day there'd be a perfect lense for VR, where there is ZERO distortion, ZERO glare + god rays, MAX fov
you can use a convex lens toward the eye for clarity of the display and use a concave lens of the same focal length as the convex one behind the display, this should solve the blurriness of the foreground as a diverging and a converging lens of the same focal length cancel each other out,and if you use a plano-convex and a piano-concave lens the glasses will become slimmer but keeping the cancelation power the same and if the user has myopia or hyperopia then they can change the focal length of the lenses to suit their condition, and (this is speculation but) won't this stop other people from seeing the displayed content unless looked at from a specific angle or distance as the piano-concave lense will scatter the light coming out from the other side.
thanks for putting the songs in the video in the description, one of them helped me track down a classic "Tyrone Davis - In the Mood"
I had hoped that Fresnel lenses could be used to straighten the light both before and/or after entering the screen.
Or to be able to have the 'pixels' be out of focus enough that they would work like those 2d "magic pictures' where the image doesn't work if you are focused on it but do if you are focused beyond it.
Were I to use a larger screen and have it further away, how far would the minimum be were I to make a Master Chief helmet with HUD inside? Or fallout Power Armour?
My brain immediately came up with the idea of using a jewler's loop kind of set up in order to compinsate for the lens issues, though how successful that approach could be is completely beyond my means, I hope you might try it even if it doesn't work at all.
The past tense of "yeet" will forever be "yote" for me.
Also, really appreciate the entertaining way to explain and then visualize the basics of optical physics, if that was my first introduction to the topic (and not a dry textbook chapter) I would've understood it much more quickly.
"Yote" makes me think of "triangle", also known as "canis felis vorus", aka "the cat-eating dog", aka "coyote"
Authentic content like this is rare, even the patreon shoutouts were entertaining
Blind the eye one side to the real world with 24 hours display is pretty convincing
Oh that's why those cardboard VR things need the little lenses so you actually see your phone
13:30 but what of you also out a "opposit" lens behind the screen ?
In this way the 2 effects cancel each other for the background, while the screen keep being on focus.
But then you have different fields of views and focal lengths in each eye so you feel cross-eyed. Read zack's comment on this video for more info
@@jonahhauser8588 ooook, thanks for the clarification 👍
I was able to still see the hypno disk by going cross eyed when I got to close
My goddam nose turned off the video at the end
“My strategy: Hard liquor.”
10 seconds later: _wait, that was a skillshare segue?_
What about a steampunk(?)-esk glasses that’s able to drop in the magnifying lens and retract it. There’s technology to use “focusing” as a yes or no function. It’s the closest thing, that I know of, to mind reading. If you focus on the display you could drop down the lens and when you stop focusing it would go back up.
In photography, you can use a grid to direct light by only using parallel rays and blocking the rest, you get a very focused beam out of a wide diffused light source. If you had something akin to a polarizing filter in front of your display but made so that it matches the pixel placement and density of the display, would the "swing-wide" rays not be blocked by that ?
The "grid" would be so thin and close to your eye it would be out of focus.
Am I missing something?
As a hairdresser, his brilliance amazes me...but the lack of hair style on the dummy makes me viscerally angry...strange though, somehow I told all my friends and family about this amazing channel without warning my hairdresser friends about the crime of shaggy dummy hair.
Brooke wouldn't lend me any of her good heads, just her old, busted head
The equations behind Gaussian optics make them pretty simple. Just 2x2 transformation matrices (maybe 3x3 for 3 dimensions). They rely on the small angle and thin lens approximations though.
With those equations, you can go into the math required to focus on a display as if it were at infinity, and hence calculate the distances between eye, lens, and display, and the focal distance of that lens. To actually make the angled lens (or mirror) that isn’t very thin you’d need more advanced tools, probably some optics simulator program, but I’ve seen a couple of free ones about the place. With that you could print such a lens or mirror on an SLA printer with clear resin, or make an FDM mould on which to bend a softened piece of polycarbonate to make a mirror. I think a single mirrored piece of plastic is the simplest method for a hobbyist, perhaps you could try making an AR display with one of those holo-sights.
I didn't think it was possible to invent a display worse than the Virtual Boy, but the internet provides.
Ok but put a concave lens after the display and it's fixed.
A tiny lens per pixel with space in between such that you can focus on objects past it, would be a mess to manufacture though
You can buy Google cardboard optics from Amazon for a couple of dollars, and then just use a non-transparent display and be a cyclops. Then you can be both a cyberpunk derpo, and a D&D monster at the same time. (Plus it's not like you were using that eye for anything anyway.)
If the oled lens combo was moved into just the corner of your vision, you could totally make a corner HUD out of it.
Can you make a build guide for a newer version of your scouter HUD? One made from easily accessible parts and not eccentric, difficult to source bits? I'd buy the plans off you. Unless you want to make a kit containing everything but 3d printed parts.
Starting Patreon: The factorial of the number of cards in a Magic the Gathering deck. But wait, that's more money than the entire world's population has... ever, combined, from the beginning of civilization, by a butt ton.
I learned more here about optics than in my physics II class lmao
I have no trouble seeing the spiral when my eye is basically touching the monitor because I have one eye that is nearsighted as all hell and one that is far sighted as all hell.
Unfortunately due to this reality I HAVE created a working method to solve the Ar display problem. Just put the AR display at the median of the lens, pretty sure this only works for people who already wear glasses though.
Why are you actively motivating me to somehow make it work? I have an idea. Semi transparent mirrors or semi transparent mirror on side with eye, and one way mirror on other side of display, like that.
Eye, semi tr. mirror, display, one w. mirror.
your writing is elegant and your delivery is captivating, i cant look away and i really look forward to each of your vids. I cant tag on to your streams cos your in the free part of the world and I'm not so I'm at work when ur streaming
Found you via the 3D printer filament reviews, subscribing for additional nefarious hijinx. Great content.
The next question people might ask is, what if you use a transmissive display such as an LCD, such that only light passing in a straight line goes through the LCD and you're just blocking some light that's otherwise already going straight?
So sad this doesn't work either... you can't focus on two tiny holes in a piece of cardboard an inch from your face either, for example, because light from all directions is passing through the holes, leading to the same scattering effect for focusing on the negative space next to the holes.
What about drilling millions of tiny holes in a light absorbing material, so light that isn't going the direction you want gets blocked? One could build such a thing by building a pile of black laser cut paper, with holes in each layer burned in a pattern that converges on the pupil...
Didn't Innovega solve this near-to-eye display problem by circularly polarizing the image source and then using a similarly polarized contact lens optic to twist the light path back into a viewable image? Anything that's not circularly polarized will remain visible and in focus simultaneously.
Annoyingly I was/am working on this exact same project. Except it's using an LCD display rather than an OLED one. The idea was to remove the back LED panel and use the surrounding light to make the image. Ran into the same problem with the display being too close though
Funnily enough, I've got pretty bad nearsightedness, so I could actually focus on it at close range still, even though it just about made me want to vomit from how sick it made me.
How much would it be for you to design one of these that could fit into a motorcycle helmet and display google maps
I can actually focus very well at close distances 2-3 inches, gets harder at 1. I think it's possible to do but people need to quit being super pickey, a display mounted a few inches away is perfectly fine it's not like you are getting that close to things anyway. What would be nice though is a optical system that can capture light and then project it into the eye whilst compensating for nystagmus.
How about using a contact lens to focus near objects (the display), and a corrective lens in front of the small display to produce normal vision + display in focus?
the dot isnt always in the same spot on a red dot sight, unless you have a more expensive parallax free sight
So if I get this right, it would work if you used one or two microlens arrays that only allows the parallel part of each pixels light to enter the eye and disperse the rest where it is no issue? Sounds like an extra challenge, but could be cool.
i really wonder if you could just make a "phone mirroring headset" that connects to your phone via wifi/bluetooth to mirror your phone screen so you could just watch youtube/read while you are doing something else... or just use it straight up as a gps navigation on your head while driving
edit: and add some touch screen/navigation button on the side of it (acting as a mouse), so you dont need to touch your phone...
A set of mirrors that extend the length between the mirror and the display could work, having the display on the back and bending light all the way to the front. Whatcha think?
Wonder how neat you could make a wearable using the same kind of headband with a collimator instead of the OLED, lookin like Locutus of Borg with that OLED on the eye.
$100 bucks says someone develops an AR wearable like he tried to create and proves him wrong. IT ALWAYS HAPPENS.
Please please please see if you can render the Fourier transform of some text or shape on these and make it appear some distance away to the wearer. A discrete cosine transform should give you only real values to work with.
dang he really made a whole as optics lesson
You should try 3D printing using weedwacker filaments.
Would you be able to produce a display system that could attach to a motorcycle helmet that would allow the user to view what's on their smartphone screen?
I actually did some consulting for a company called Fusar that was making a very similar product! That prototype appears in passing in one of my videos, though I can't remember which.
Build it into a baseball cap so it is far enough away to see
a problem solver.
if you have a history of eye strain or are just tired I don't recommend doing the hypno disc thing it physically caused my eyes pain! they're still hurting!
They said it was impossible that the earth revolved around the sun aswell until they were proven otherwise.
it might not be good for wearable tech, but a handheld device with a transparent screen would be cool as hell and ALSO pointless :D (maybe have the body be a keypad/control surface and have the screen pop out on rails? so that it's protected when it's not being used)
I suppose this isn't the best solution, but would it be possible to sandwich the Oled between two lenses, with the two sides cancelling each other out, but the near lens also straightening the OLED?
The past tense of yeet is yote. Yeeted is also acceptable depending on the quantity of irony layers you're using at the time. Generally, more layers of irony = more likely to be the latter than the former.
this reminds me of the display in the helmets for the marines in halo ce
It would make a hell of a gun sight though
How about some info on that metal electric screwdriver you were using?
hwy zack you can use the liquid lens to attach to the old and to your eye like a cyborg then we can adjust the focal length and easy ......
add a second concave lens, on the far side of the display?
Can't you still just have a lens enclosure that exclusively covers the OLED, similar to VR? All I really want is a display with AR capabilities that doesn't blind me to the surrounding environment. If your lens is only covering the display, you should still be able to focus on the environment as you please outside of it.
If the lens is only covering the display, how can you overlay virtual objects on the real world? You need both in focus.
@@ZackFreedman I guess you'd end up doing AR? Easiest way I can thinking of is adding a camera and drawing the camera to the background. sorry for the late reply, I guess I didn't get a notification on this one
I don't know how effective it may be, but what about light polarizing filters between the OLED and your eye?
Will that glass that can turn reflective When electricity is passed through it work? I mean you can use it all the time But you could just simply tap the side when you want to look at something
I know it would make it look more stupid and probly super tunnel vision, but what about a jewelers loop idea?? function with 2 lenses, one to get your forward view to translate to the screen, then the 2nd inner lens converts the front lens to viewable along with the oled display
Why not use a polarized clear sheet, like the ones used in LCD monitors
Would layered fresnel lenses lining with the lens ridges at 90° to each other help align the photons without relying on increasing distances ?
That is why I never made one of those. The displays should, however, make a very fun Nerf/Lazer Tag sight, especially when paired with a thermal sensor array. Show us how to make a toy gun sight that highlights areas that are warmer than the back ground (or around human temperatures, if the ambient temp is above that range).
Why can you teach me optics better than my teachers?
Dude. I knew you were the Denver-version of NYC. I present Futurama-"slinglings" of prototyping. DNA is hardware I can't legally hack, though, Bro.
Put a lens in front to be able to see the display correctly and then one behind to see the world correctly. Bam. Transparent display you can see right in front of your face
What if you use one of those polarizing lenses to keep the image clear
Isn't it possible to use a lens that makes the display visible behind it and then one more lens that cancels out the first one in front of the display?
Someone else already answered why polarizing the light wouldn't work but it would have been cool to cover that as well.
I'm curious if it would be possible during the production of these things to have some way of having each pixel be able to become opaque or something, would that work?
What if the pixels were significantly smaller?
So what I'm hearing you say is, it'd be great as a cosplay or movie prop, but not much else! XD
What if a transparent screen was somehow made of laser diodes?
Maybe put a lens behind that is the inverse of the one in front or am i missing something?
I know it would be thicc but so is the optigon
make a flip up lense so people can decide when to see the display or the world...
What, you mean a simple hinge to move it?
Are you out of your mind? That's not geek enough
@@leonardo9259 use eye tracking to tell when your focusing close and then use a motorized hinge to swing the display in/out.
@@jetison333 I like the idea but i prefer rotors and servos better
still would be killer for like a dead-shot-ish wrist gun with a flip up display with name, bounty and $ for a cool bounty hunter cosplay
What about a polorizing filter to straighten the light?
Sick! I'm printing it right now! I'm glad someone supports my stupidity! Exclamation points!