[HN Gopher] A brief demonstration of my Titanium Cyborg Eye as a...
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A brief demonstration of my Titanium Cyborg Eye as a flashlight
[video]
Author : jiwidi
Score : 390 points
Date : 2022-10-24 12:23 UTC (10 hours ago)
(HTM) web link (www.tiktok.com)
(TXT) w3m dump (www.tiktok.com)
| hyperific wrote:
| Anyone remember Eyeborg?
|
| https://petapixel.com/2016/01/25/eyeborg-the-man-who-replace...
| jstimpfle wrote:
| Immediate "flashback".
| https://www.youtube.com/watch?v=Rkr1oUH1SV8 . This is a German
| version while Asterix is a french comic (and perhaps not widely
| known outside Europe?).
| sschueller wrote:
| oh wow, I haven't seen this in many years. Thank you :)
| mdtrooper wrote:
| Somebody says Cataclysm Dark Days Ahead:
| https://cddawiki.chezzo.com/cdda_wiki/index.php?title=Crania...
| e-clinton wrote:
| Put a projector in there and have it display your thoughts from a
| Neuralink
| estomagordo wrote:
| chs20 wrote:
| devoutsalsa wrote:
| [deleted]
| 1970-01-01 wrote:
| Styropyro's "pretty cool, right" seems fitting.
| sudhirj wrote:
| Where does the heat go? That seems like a couple watts at least.
| flak48 wrote:
| > Does it get warm?
|
| > Brian S (Creator): Nope not at all. LED's do not emit much
| heat and the Titanium body of the eye offers great heat
| shielding from any heat emitted.
|
| [https://www.tiktok.com/@bsmachinist/video/713267837541158430..
| .]
| dymk wrote:
| LEDs of a couple of watts do emit a noticeable amount of
| heat.
|
| Being titanium doesn't mean anything - here the heat has to
| go somewhere eventually. Either out of the front of the eye
| where it's "uninsulated" or it'll get hot enough internally
| that the body will get warm.
| xeromal wrote:
| > Being titanium doesn't mean anything
|
| This is a pretty confident answer, but I think you miss the
| point of the titanium. It can act as a heat battery and
| slowly let it dissipate all around vs a focused point of
| heat.
| kragen wrote:
| Titanium has much less thermal mass than the same volume
| of water. Water is 4.2 J/g/K and 1 g/cc, thus 4.2 J/cc/K.
| https://en.wikipedia.org/wiki/Titanium is 25.060 J/mol/K,
| 4.506 g/cc, and 47.867 g/mol, so 0.5235 J/g/K and 2.359
| J/cc/K.
|
| I think water is also a better thermal insulator if you
| can keep it from convecting, and a better heat spreader
| (to eliminate "a focused point of heat", which I agree is
| a problem) if you do let it convect. But that's the
| opposite of titanium being a good heat _shield_.
| xeromal wrote:
| Thanks for commenting. I'm a layman here so providing
| hard numbers helps me wrap my head around the comparison.
| I think you're saying that water is roughly double a
| better thermal insulator? I wonder if the man could
| devise a water layer around what generates the heat in
| order to reduce the chance for burning his body?
|
| He probably has to weigh the chance for water to mix with
| the components vs a simple titanium hunk of metal. I
| guess that's what materials engineers are for?
| kragen wrote:
| I'm a layman too.
|
| No, I didn't provide numbers on thermal conductivity,
| just specific heat, though it is now unfashionable to
| call it that.
|
| Yes, putting some water inside the titanium would
| increase the thermal mass of the overall assemblage, and
| I don't know of anything that would work better than
| water for this. This would reduce the temperature to
| which the eye-socket tissue is heated by intermittent but
| high-intensity LED usage, reducing the risk of burns,
| because it smooths it out over time. If the LED is not at
| the top of the eye, or if the eye rotates, liquid water
| would also help to smooth it out over space.
|
| However, to minimize the temperature to which the eye-
| socket tissue is heated, it would _also_ be beneficial to
| interpose thermal insulation between the tissue and the
| heat source, such as a thick layer of teflon around the
| outside of the eyeball (or saline-solution-soaked teflon
| foam). This will slow heat transfer from the hot eyeball
| to the eye-socket tissue, giving blood flow more time to
| convect away the waste heat and thus producing a lower
| temperature in the sensitive tissue.
|
| I think the more important issue here is that he's using
| low enough power with a low enough duty cycle that it
| isn't much of a problem.
| dymk wrote:
| Well sure it's a confident answer - that's just how
| physics works. You generate heat in an enclosed area,
| it's going to leak out. The hotter it gets inside, the
| faster it's going to dissipate through the material
| containing it.
|
| The question is how hot will it get for some amount of
| LED on-time.
| xeromal wrote:
| But it kind of misses the point. The titanium does do
| something. It slows down the heat dissipation to an
| unnoticeable level according to the creator.
|
| The comment was confident and correct, but not accounting
| for the whole picture. Couple that with a level of
| snarkiness, and it's a classic internet comment that
| makes the internet worse IMHO.
|
| I'm always reminded of that comment on hackernews that
| shits on dropbox when it was launched. It was correct and
| of course dropbox was "trivial" to copy using a couple of
| commands, but it misses the point.
| hamburglar wrote:
| Being titanium means it acts as a heat spreader and a
| buffer that can absorb and dissipate the small bursts of
| heat you might expect from brief flashlight use. Rather
| than the LED touching one spot in your eye socket (which
| would probably be a noticeable amount of heat even if not
| uncomfortable), the heat is spread over the entire titanium
| body.
| spookthesunset wrote:
| Given the size of the battery I'd assume you could only
| pump out "max power" for a short time anyway. If that
| titanium does act as a buffer, things might be good.
|
| Honestly the heat thing was the first I thought of too.
| It would nice if the dude goes into more detail about it
| because I'm sure it is one of the top questions asked.
| [deleted]
| A4ET8a8uTh0 wrote:
| I talked with my social circle just the other day how our
| timeline is really a Cyberpunk timeline with only technology and
| body augments seemingly lagging behind.
|
| I am both excited and horrified, because that universe is pretty
| dark. I suppose I should be thanking our lucky stars we are not
| moving towards 40k universe.
| debacle wrote:
| It seems like the greatest thing lagging behind is society.
| What the reddit poster did was possible 20 years ago, but
| likely would have caused wistful maidens to faint, etc.
| madamelic wrote:
| Yep.
|
| I have 2 RFID implants and I don't mention it to most people
| because I have genuinely gotten bad reactions from even other
| software engineers.
|
| It's a pretty minor 'modification' but people get really
| weirded out about non-medical implanted tech.
| debacle wrote:
| I am a body purist, but I understand why people are curious
| about these things. More functional than navel piercings,
| at least.
| Semaphor wrote:
| I've recently met an acquaintance with a bionic leg again. It
| detects if he's walking forward or backward, climbing stairs,
| walking, or running. It only needs to be charged once or twice
| a week and works even on unstable, muddy ground.
|
| Now granted, it's a 6 figure device, but still, I'm really
| impressed whenever SotA body replacement parts come up.
| bombolo wrote:
| It's extra fun when they detect wrong and drop you on the
| ground.
|
| (got one)
| Semaphor wrote:
| Sounds super fun :D How often does that happen?
|
| But then, the first time I met him, was at Wacken 2007. The
| legs could do nothing but walking at a measured pace
| (though I thought that was still pretty impressive), and
| had to be recharged every evening.
| dmd wrote:
| I mean - 40k is set in the year 40k, roughly, right? We've got
| a lot of time.
| pnt12 wrote:
| I don't!
| Der_Einzige wrote:
| This is correct. I tell all my friends to watch blade runner
| and related cyberpunk if they want an idea for what the future
| of AI is going to look like.
|
| I really doubted for awhile that it would be so damn cyberpunk
| and so damn predictable. Than I saw stable diffusion and
| realized the "enhance" scene from blade runner was simply
| prophetic...
| youainti wrote:
| I point out to people that we've got lots of cyborgs. Just look
| at everyone with an artificial pancreas in the form of a
| glucose pump.
| icemelt8 wrote:
| The repulsion hackernews crowd will face while opening TikTok.
| newswasboring wrote:
| Why? I've been on HN forever and I'm a huge TikTok fan. I will
| never understand the outright rejection on TikTok, there are so
| many cool projects which produce TikTok devlogs. Not just that
| several niches which I don't see often enough on HN (like AI
| ethics, not just copy right stuff) have entire channels on
| TikTok.
| wruza wrote:
| Do most of the videos that you watch there have such
| (subjectively) awful arrangement? I have no tiktok account,
| and am no hater, but I wouldn't follow content like this
| either. Cannot imagine myself receiving a notification,
| watching $subj and thinking "this was a good one".
|
| I mean it's a cool idea and tech spirit, but the form...
| _raised eyebrows_
| newswasboring wrote:
| I am confused about what awful arrangement you are talking
| about, but an example of good learning videos is excel
| channels. They teach you nice tips and tricks and get to
| the point fast.
| boringg wrote:
| Add more fuel to the fire --> https://www.thebureauinvestigat
| es.com/stories/2022-10-20/beh...
| [deleted]
| andrew_ wrote:
| I'd recommend the Joe Rogan clip where they read the ToS:
| https://www.youtube.com/watch?v=wtGwlQWqQWs
|
| TikTok is the most public and effective social espionage
| campaign ever devised or put into practice.
| prvit wrote:
| Imagine being this easy to fool.
|
| Tiktok isn't special when it comes to collecting data.
| bovermyer wrote:
| You're focusing solely on the content.
|
| My abject hatred of TikTok stems from who controls it.
| hnbad wrote:
| "Abject hatred" seems a bit much, even for TikTok.
|
| When it comes to negative impact on humanity, Meta seems
| far more hate-worthy. And it's not like this list is
| particularly short (e.g. nearly every venture a16z is
| involved in seems like it should get a spot).
|
| Heck, even HN isn't without sin.
| samsari wrote:
| >abject hatred
|
| Well, thank goodness we're all managing to retain some
| perspective and not just descending into performative
| melodrama.
| newswasboring wrote:
| Weird, Bytedance has not done anything, to my knowledge,
| worse (or even better) than other big companies in consumer
| software space. Do you also not use Instagram? What about
| google or YouTube? They have done some pretty shady stuff.
| Or oculus VR? PayPal/stripe? All these companies have done
| extremely shady stuff, it's impossible to be at the top of
| any of these markets without being shady.
| UncleMeat wrote:
| Bytedance's payout to creators is much lower than
| YouTube's and their content-moderation has been more
| harmful to people who are poor, queer, or not
| traditionally attractive than competing platforms.
|
| These probably aren't the top of the complaint list for
| most social media and content distribution platforms so
| I'm not saying these are reasons to consider Bytedance in
| a different category than Google or Facebook but they are
| worth knowing about.
| manu_te wrote:
| It's about China... Everyone that can (US, China, etc.)
| tries to guzzle as much data from online users as
| possible. That said, there are checks and balances in the
| US, there is a certain level of accountability. China is
| an absolute black box setting up an Orwellian social
| credit system for its own citizens, and with no
| accountability whatsoever about the data they might
| collect from foreign citizens. So, even if everyone is
| playing a similar game, ultimately there are differences.
| newswasboring wrote:
| > That said, there are checks and balances in the US,
| there is a certain level of accountability.
|
| I'm sorry but there is no accountability in US, there are
| price tags.
| WastingMyTime89 wrote:
| Short video is a terrible medium.
|
| I am already on the fence regarding long videos. They are a
| rarely paying off time investment next to reading the
| equivalent article.
|
| Short videos are an immediate no from me. It's never worth
| the investment. Realistically if it could be written in a
| script fitting a TikTok video it's not going to go deeply
| into anything.
| ycombigator wrote:
| Depends.
|
| If you are trying to show a repeatable process, whether
| that's just DIY or microbiology, a video is dramatically
| better than an article.
| newswasboring wrote:
| I will have to completely disagree on this one. The amount
| of excel I've learnt from my TikTok fyp is genuinely
| unprecedented in my life. It feels like passive learning
| because they appear between my other interests like history
| or comedy. Specially stuff like archeology is specially
| condusive to this format.
| UncleMeat wrote:
| Short video is a _different_ medium. Like it or not, TikTok
| is encouraging creation of new culture via its particular
| creation tools.
| HeyLaughingBoy wrote:
| And the reality is that different people learn best
| through different means. I can't stand video as a
| learning medium for software-related topics, but to each
| their own.
| boringg wrote:
| While damaging peoples ability to have an attention
| station.
| dicknuckle wrote:
| I never had one in the first place so none of it makes a
| difference to me.
| lrvick wrote:
| I do not care how good the content is. Anyone that posts
| there is demanding people pay for access with behavioral data
| on how many microseconds they view each post, what apps they
| have installed, where they are located, what locations they
| frequent, everything they type or view in the built-in web
| browser, etc.
|
| All this data goes to a centralized surveillance capitalism
| organization controlled by an authoritarian foreign power.
|
| https://lr.riverside.rocks/r/videos/comments/fxgi06/not_new_.
| ..
|
| If you -must- view Tiktok content, consider ProxiTok which is
| an open source frontend that removes most tracking.
| hombre_fatal wrote:
| I doubt it. Most people here are doomscrollers like the rest of
| genpop.
| account42 wrote:
| Nah, that computer-generated voiceover is repulsing no matter
| where the videos are rehosted.
| Semaphor wrote:
| I just followed a link to TikTok for the first time. It's far
| better than twitter, kinda like YouTube but cleaner.
| pluc wrote:
| It actually renders most of the information you'd expect with
| JavaScript and Cookies disabled. Cannot say the same for
| Facebook, Twitter, Instagram etc. Just can't play the vid,
| but I can see the thumbnail.
| js2 wrote:
| https://mbasic.facebook.com/ works without JavaScript.
| Unfortunately it's becoming increasingly broken as it
| seemingly bit rots away from the main site.
| dicknuckle wrote:
| I just use Maki for Facebook.
| Semaphor wrote:
| While I don't have first-party JS and Cookies disabled, I
| have everything third party disabled and had the same
| experience. Now that you mention it, that is actually
| extraordinary.
| lrvick wrote:
| It is like Twitter except only videos so you do not have to
| read, and all your behavior data goes more directly to the
| CCP instead of having to pass through Twitter servers first.
| dang wrote:
| Please don't post off-topic dross. This kind of stuff takes
| over threads like kudzu and it's just what we don't want here.
|
| Especially not the meta kind, please. Meta is the crack of
| internet forums.
|
| We detached this subthread from
| https://news.ycombinator.com/item?id=33316063.
| [deleted]
| lrvick wrote:
| Install LibRedirect extension and it will convert most user
| hostile links like TikTok to their open source community proxy
| alternatives.
| speed_spread wrote:
| aaron695 wrote:
| nimbius wrote:
| nonsense. for those who dont care to run tiktok ive written an
| ephemeral microservice driven with an AWS lambda, rust enabled,
| react framwork that uses an intuitive haskell based dockerless
| rootless console interface for the API i created out of a go
| based esolang implementation of the Turing complete driver for
| TikTok included in the 7.7 Linux kernel I built a ruby on rails
| time machine to travel into the future and clone using my
| custom built git plugin for mercurial on AS400.
| usgroup wrote:
| That's reads like it took a lot of effort to write.
| srfvtgb wrote:
| As long as it doesn't have the robotic text-to-speech that
| seems to be on every TikTok video.
| cduzz wrote:
| Wouldn't it be easier to use yottadb or some other MUMPS
| derivative instead zapping it onto an AS400 cloud?
| return_to_monke wrote:
| Nah. That would induce significant overhead because of the
| distributed Blockchain systems. I think using zig with
| latent diffusion or some variation of GAN would do better.
| andrew_ wrote:
| how did you manage to mention rust without also mentioning
| "fast" and "secure"?
| garfieldnate wrote:
| I had expected to see him moving the flashlight around the room
| by just moving his eye and not his head; it hadn't occurred to me
| before that glass eyes aren't connected to the muscles used to
| move the eye around. I wonder if doing such a thing is within the
| realm of possibility.
| throwaway3415 wrote:
| smegsicle wrote:
| _that_ i 'd seen before, but a flashlight? that's new
| haolez wrote:
| Just occurred to me that half blind chess players could be the
| ultimate over-the-board cheaters!
| qikInNdOutReply wrote:
| So, i hope this is lightweight, cause heave "glass" eyes deform
| the skull over time, leading to eyesocket drop. One of the many
| reasons that becoming a cyborg aint easy.
|
| But if it was a lightweight memory device with wireless
| connection to all devices of mine nearby. This would be neat
| tediousdemise wrote:
| An always-on camera would be my favorite cyborg eye use case.
|
| Imagine being able to go back and relive memories from your
| perspective. ML could be used to automatically caption and
| bookmark significant events for searchability.
| aar9 wrote:
| The black mirror episode 'The Entire History of You' shows a
| world where everyone has this capability. You might be
| interested in watching it.
| xnx wrote:
| This is definitely coming, and I'm pretty sure it won't even
| cost you an eye. The dropping miniaturization of cameras, logic
| boards, batteries, microphones makes this inevitable. Likely
| form factors are glasses or pendants.
| jalgos_eminator wrote:
| That's part of the world in the dystopian movie "Anon" -
| https://www.imdb.com/title/tt5397194/
|
| You can replay any moment in your life that your eyes saw or
| your ears heard... but so can the government.
| hbgl wrote:
| *empty eye socket
| throwaway413 wrote:
| Flashlight is awesome. How about a camera...
| koshergweilo wrote:
| I actually met this guy before, he's been making these custom
| eyes for as long as I can remember. He said it took him a while
| to get comfortable making something water-tight enough to stick
| it in his eye. Last I talked to him he was talking about scaling
| up, hope the popularity leads to good places.
| ghoty wrote:
| Amusingly specific comment on that post: "A one eyed plumber
| working in sink cabinets would like this."
| wnoise wrote:
| I was so disappointed when I learned what laser eye surgery
| really did.
| artursapek wrote:
| imagine this guy breaking in to your house in the middle of the
| night
| munirusman wrote:
| When life gives you lemons, make lemonade!
| 09552655879 wrote:
| jeroenhd wrote:
| That's a very creative way of spicing up a boring old glass eye!
| I imagine such "wearable" tech could also be the ultimate version
| of those snapchat glasses.
|
| Putting a battery inside your eye socket seems incredibly risky
| to me, though. Especially one that can power a bright light like
| this for a while...
| ehnto wrote:
| He does mention that "safety is paramount" and that the light
| is at low power for now. I'm glad he's not just winging it.
| spuz wrote:
| Maybe not winging it but definitely eyeballing it.
| mckirk wrote:
| I wonder what power laserpointer you could fit in there without
| going overboard with the battery... Imagine being able to light
| matches by looking at them for a bit.
|
| On the other hand, every mirror would be a great chance to lose
| your other eye as well, so maybe disregard my ideas.
| wingspar wrote:
| Wouldn't it burn your eyelid too, from the inside?
| dylan604 wrote:
| If you're eyelids are closed, you can't be looking at what
| your aiming. Your chances of hitting the target increase
| infinitely if you keep your eyes open.
| sonusario wrote:
| Try not to blink challenge?
| spookthesunset wrote:
| It would have a blink sensor that turns it off when a blink
| is detected or it points at your nose or something, right?
| LeifCarrotson wrote:
| A low-power laser pointer would still be very interesting and
| perfectly safe. Star Trek/X-men/Superman/Star Wars dreams of
| stunning enemies with a beam of light from your eyes, there's
| no to have power levels that can light matches, pop balloons,
| or otherwise cause destruction.
|
| One cool use, IMO, would be a time of flight distance-
| measuring laser: With only a single working eye, OP lacks
| binocular vision for distance measuring. With the equivalent
| to a Bushnell rangefinder, they could stare at an object,
| blink twice, and hear a tiny voice literally in their head
| say "37.84 meters".
| spookthesunset wrote:
| Might not even need a voice. I wonder if you could "tap
| into" the remaining bits of the optic nerve and send a
| signal that way. The signal would vary based on distance.
| Maybe simulate intensity of light or something.
|
| Would probably require some kind of crazy training for it
| to work. Plus I have no clue what I'm talking about!
| xeromal wrote:
| Wow, you have me excited. That would be so neat.
| dylan604 wrote:
| It would need to be an IR laser, or the jig is up for being
| a useful bar trick.
|
| Heck, the old skool 1st/2nd ACs in the camera department
| would kill for this. No need to "pull tape" any more.
| aperrien wrote:
| Perhaps you could add a temperature sensor as well? Heck it
| might be neat to go full tricorder-in-eye...
| melony wrote:
| The issue with high power lasers is heat dissipation.
| LanceKagar wrote:
| RajT88 wrote:
| Imagine cooking your face from the inside!
|
| I have some laser pointers capable of lighting matches. They
| get hot.
| dylan604 wrote:
| >On the other hand, every mirror would be a great chance to
| lose your other eye as well, so maybe disregard my ideas.
|
| With great powers comes great responsibility.
| MisterTea wrote:
| "Do not look at mirror with remaining eye"
| bitwize wrote:
| Optic blast!
| ilyt wrote:
| TeMPOraL wrote:
| > _On the other hand, every mirror would be a great chance to
| lose your other eye as well, so maybe disregard my ideas._
|
| At those power levels? Probably every surface in general. A
| beam powerful enough to light a match or burn through a
| balloon is powerful enough for the diffuse reflection off a
| table or wall to blind you.
| anamexis wrote:
| You could just wear laser safety glasses.
|
| Wait..
| spookthesunset wrote:
| Safety contacts?
| thomastjeffery wrote:
| Safety monocle.
| reflectiv wrote:
| I think we're making a supervillain recipe here
| guys...chill
| vijayr02 wrote:
| Username checks out on multiple levels!
| 867-5309 wrote:
| Homelander enters the chat
| Izkata wrote:
| This is why Cyclops from the X-Men wears red sunglasses
| all the time, even when out of uniform.
| LanceKagar wrote:
| CabSauce wrote:
| Or a sweet predator targeting system.
| nigerianbrince wrote:
| > Putting a battery inside your eye socket seems incredibly
| risky to me, though
|
| We already do this with pacemakers
| hutzlibu wrote:
| And it is risky, but it beats the alternative.
|
| Whether it is worth it for a cool gadget, is another
| question.
| cogman10 wrote:
| Not the same thing and we don't really do that.
|
| Pacemakers are typically lithium iodide which do not have the
| same risk of uncontrolled burning (that's the nickel
| variety).
|
| But also, the pacemaker sits outside the body with probes
| going inside. You'd not want another surgery just to change a
| battery.
| Cthulhu_ wrote:
| But then this one could be lithium iodide too. A
| replacement eye can also be replaced more easily.
|
| Anyway, your statement about the pacemaker sitting outside
| the body with probes going inside is not correct; maybe it
| once was, but that was decades ago.
| spookthesunset wrote:
| > But also, the pacemaker sits outside the body with probes
| going inside.
|
| This introduces an opening into the body that will almost
| certainly result in infection.
|
| Probably much less risky to periodically change the battery
| than get the portal infected
| mauvehaus wrote:
| Pacemakers and implanted defibrillators are both, uh,
| implanted inside your body. Typically they stick them in
| the front side of your left shoulder. They run the leads
| into a vein (or artery) and anchor them into the wall of
| the heart.
|
| They can implant basically under the fat layer or under the
| pectoral muscle. Beneath the fat layer is easier both from
| a surgery and recovery standpoint, but less secure.
|
| The downside of that is that it's possible for the device
| to flip over. They usually try to avoid securing the device
| to anything because that can lead to discomfort or pain if
| the device wants to move around, but they can if they have
| to.
|
| And yes, they do have to repeat surgery to replace the
| device when the battery gets low. The leads AIUI are
| usually a lifetime part (hopefully for all the right
| reasons). For defibrillators, battery life will be
| maximized if the device doesn't have to deliver shocks and
| can stick to just pacing. It turns out if they implant a
| defibrillator, you get a pacemaker for free.
| alasdair_ wrote:
| Screw batteries, just implant a nuclear generator inside
| the body instead. Perfectly safe :)
|
| https://www.reuters.com/article/health-heart-pacemaker-
| dc-id...
| spookthesunset wrote:
| How many amp hours is the battery and what is the
| voltage? I'd assume 3.7v if it's lithium ion...
| mauvehaus wrote:
| Search me :-) My experience is adjacent to an end-user,
| not as a doctor or engineer.
| eesmith wrote:
| One of the exceptions, nuclear pacemakers using Pu-238 or
| Pm-147.
|
| "The History of Nuclear Powered Pacemakers" -
| http://large.stanford.edu/courses/2015/ph241/degraw2/
|
| > Despite the often longer life-expectancies, nuclear
| pacemakers quickly became a part of the past when lithium
| batteries were developed. Not only did the technology
| improve, allowing for lighter, smaller, and programmable
| pacemakers, but doctors began to realize that this
| excessive longevity of nuclear pacemakers was excessive.
|
| https://en.wikipedia.org/wiki/Betavoltaic_device says
| betavoltaic "devices include a 100 mW tritium-powered
| device weighing 20 grams".
|
| That's about 5x the weight of a glass eye -
| https://www.muellersoehne.com/907.html .
|
| Assuming linear scaling, an energy budget of 2mW isn't
| going to provide much light.
| robert_tweed wrote:
| A glass eye filled with tritium would probably give
| enough light to read with, continuously, with a half-life
| of 10 years.
|
| It might get a bit annoying when you want to go to sleep
| though.
|
| https://en.wikipedia.org/wiki/Tritium_radioluminescence
| kragen wrote:
| Good points. But a low-duty-cycle laser pointer eyeball
| could be more useful than a low-duty-cycle pacemaker.
|
| You could use the 2mW to charge up a capacitor for 24
| hours and then have a minute and a half of 2mW, which is
| enough for a visible laser pointer reaching a few meters.
| 2mW light _output_ is quite a bit brighter than that but
| requires more like 20mW power input.
|
| A 220 mF cap at 48 volts would hold 35 hours of 2mW, and
| there are ceramic caps that big that would easily fit
| into your eyeball.
| eesmith wrote:
| "A 220 mF cap at 48 volts"
|
| How much does that weigh? How big is it? What's the
| leakage current?
|
| If it takes enough space away from the betavoltaic
| device, and thus reduces the power generation, then the
| cap will never fully charge.
|
| Not knowing what you're thinking of, I picked
| https://www.mouser.com/datasheet/2/427/134d-1763800.pdf
| mostly arbitrarily. Note that I'm a programmer, not a
| hardware person.
|
| The lightest weights 2.6 g, which is 1/2 the weight of
| the eyeball, so cuts the power generation to 1mW.
|
| I _think_ it 's telling me there's a 10mA leakage
| current, which I think means the cap will power up to
| 0.1V before the leakage rate matches the power rate.
|
| Now that you know my level of ignorance, what's your
| take?
| kragen wrote:
| Yeah, that's a wet tantalum cap, those have higher
| leakage currents. An X7R MLCC like
| https://www.digikey.com/en/products/detail/united-chemi-
| con/... will probably have lower leakage, though the
| datasheet doesn't specify. Digi-Key says it costs US$45,
| it's 20 mm x 28.5 mm x 10 mm which is 5.7 cc, and
| probably close to 15 grams.
|
| Leakage current usually increases superlinearly with
| voltage, though. If the tantalum's DC leakage is 10 mA at
| 50 volts, it's probably closer to 0.1 mA at 5 volts.
|
| In capacitors with a given dielectric, the maximum energy
| is proportional to the volume of the dielectric, so
| although a 47 mF cap charged to 108 volts stores the same
| energy as a 220 mF cap charged to 50 volts, it also needs
| the same volume.
|
| (I'm not an EE either; I only play one on HN.)
|
| https://en.wikipedia.org/wiki/Human_eye says an adult
| human eyeball is about 23.7 mm x 24.2 mm x 23.4 mm, and a
| spheroid like that is _p_ /6 of the corresponding cuboid,
| so you only have about 7.03 cc to work with.
|
| So probably you'd have to settle for under 1 cc of
| capacitor, which (in the case of X7R anyway) means
| storing more like 15 seconds of 2 mW.
| AlmostAnyone wrote:
| But that's not true... A pacemaker goes inside your body.
| It's replaced during a surgery every 15-20 years and has
| enough battery lifetime to last that long.
|
| There used to be nuclear-powered pacemakers that could last
| many lifetimes but nowadays the doctors say it's better to
| replace the whole thing every once in a while, so the
| nuclear option is overkill.
| worldsayshi wrote:
| Not sure why putting a battery in your pocket at all time or
| one strapped to your wrist is that much safer.
| shepherdjerred wrote:
| One is inside your body, the others are outside.
|
| Would you rather have a battery in your eye socket catch
| fire and explode, or one in your pants pocket/on your
| wrist?
| GistNoesis wrote:
| Maybe you don't need a battery and can go with wireless power
| transmission.
|
| A scaled-up version of this :
| https://www.youtube.com/watch?v=UQ3K0suY1Dc
|
| To provide more power to the led you probably need a bigger
| coil inside the eye, it should work if you hide the induction
| transmission loop inside a hat.
| perth wrote:
| Imagine getting an MRI with your induction powered eye and
| the LED just explodes from the massive amount of conducted
| power
| spookthesunset wrote:
| Honestly while a lithium battery might worry me I'd be more
| worried about heat dissapation. Of course the dude says it
| isn't an issue, but still.
|
| I guess it might not matter much because the battery is so
| small that you'd be lucky to get more than a handful of minutes
| running that LED at max power.
|
| This is all speculation based on a 30 second video though.
| Sohcahtoa82 wrote:
| > Honestly while a lithium battery might worry me I'd be more
| worried about heat dissapation.
|
| I mean...isn't it effectively water cooled?
| spookthesunset wrote:
| You got plenty of water mass up in your cranium too!
|
| All I know is my headlamp gets mighty hot when it is
| running at peak intensity. Like hard to touch levels of
| hotness.
| cwkoss wrote:
| Meat sink
| reality_inspctr wrote:
| what about shielding? cancer?
| SV_BubbleTime wrote:
| Are you concerned with light or heat caused cancer?
| tevon wrote:
| Does anyone know if the eye moves in congress with the other eye
| or if its stationary i.e. always faces forward?
| thih9 wrote:
| Original source:
| https://www.tiktok.com/@bsmachinist/video/715758729345106257... .
|
| As mentioned in the video, there are other designs, e.g.:
| https://www.tiktok.com/@bsmachinist/video/710602314370956011...
| (terminator). Profile page with more videos:
| https://www.tiktok.com/@bsmachinist .
| dang wrote:
| Ok, we've changed to that from https://www.reddit.com/r/nextfuc
| kinglevel/comments/ybisa1/th.... Thanks!
| geuis wrote:
| The Reddit link provides a better viewing experience and
| better discussion.
| dang wrote:
| The Reddit link is still present for those who prefer it.
|
| As bragr points out, the HN guidelines ask for the main
| link to be to the original source. Alternate links are
| welcome in the comments.
| bragr wrote:
| Neither of which conform to the guidelines.
|
| >Please submit the original source. If a post reports on
| something found on another site, submit the latter.
|
| https://news.ycombinator.com/newsguidelines.html
| lrvick wrote:
| Why would you knowingly link directly to a source even more
| hostile to users?
| dang wrote:
| " _Please submit the original source. If a post reports on
| something found on another site, submit the latter._ "
|
| https://news.ycombinator.com/newsguidelines.html
| tgsovlerkhgsel wrote:
| Presumably because it's the original source. On desktop,
| both are similarly bearable, on mobile, TikTok is a bit
| more hostile this time, but I've seen reddit put up hard
| app-walls before.
|
| (Both assumes you have an adblocker of course)
| Gordonjcp wrote:
| Needs a little "Zeiss Ikon" logo around the pupil.
| sphars wrote:
| For those that don't want to go to TikTok's page (for one reason
| or another) there is a proxy service you can use, like how Nitter
| is used for Twitter, called ProxiTok. Gets just the video,
| description and ability to download it.
|
| The first video in the GP proxied:
| https://proxitok.pabloferreiro.es/@bsmachinist/video/7157587...
|
| Proxy info: https://github.com/pablouser1/ProxiTok
|
| (Not the creator of it but a user of it)
| f0e4c2f7 wrote:
| Never heard of this - thanks for sharing.
|
| Nitter and Teddit have become near full replacements for
| twitter and reddit for me. I don't know if they can last but I
| love services like this without dark patterns.
| INGSOCIALITE wrote:
| with the amount of heat my tiny little pocket flashlight
| generates, this terrifies me
| herpderperator wrote:
| How does it charge?
| tgsovlerkhgsel wrote:
| Presumably by removing it (fake eyes just pop out).
| [deleted]
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