How does it charge?
Presumably by removing it (fake eyes just pop out).
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A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
141–150 of 176 posts
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#142Styropyro's "pretty cool, right" seems fitting.
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#143An 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.
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.
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#144Earlier quoted context omitted.
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.
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 t…
Good points. But a low-duty-cycle laser pointer eyeball could be more useful than a low-duty-cycle pacemaker.
You could use the 2μW 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 μF cap at 48 volts would hold 35 hours of 2μW, and there are ceramic caps that big that would easily fit into your eyeball.
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#145with the amount of heat my tiny little pocket flashlight generates, this terrifies me
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#146Earlier quoted context omitted.
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.
> 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.
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.
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#147Earlier quoted context omitted.
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 t…
Good points. But a low-duty-cycle laser pointer eyeball could be more useful than a low-duty-cycle pacemaker. You could use the 2μW 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 μF cap at 48 volts would hold 35 hours of 2…
"A 220 μF 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 1μW.
I think it's telling me there's a 10μA 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?
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#148Earlier quoted context omitted.
> 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.
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…
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?
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#149Earlier quoted context omitted.
Ok, we've changed to that from https://www.reddit.com/r/nextfuckinglevel/comments/ybisa1/th... . Thanks!
The Reddit link provides a better viewing experience and better discussion.
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.
Re: A brief demonstration of my Titanium Cyborg Eye as a flashlight [video]
#150Earlier quoted context omitted.
> Putting a battery inside your eye socket seems incredibly risky to me, though We already do this with pacemakers
Not sure why putting a battery in your pocket at all time or one strapped to your wrist is that much safer.
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?