by JKCalhoun
4 subcomments
- In case you miss it, a video of the thing in operation is linked: https://youtu.be/pcAEqbYwixU
Reminds me that there are limitations to volumetric displays—namely that, since you have no idea where the viewer is located, there is no backface culling you can perform. So it seems to work best for "cutaway" views.
I'd like to see one in person. Might be "magical" — the video only kind of hints at this.
- These displays use rotating mechanisms.
This ones does not: https://www.youtube.com/watch?v=wrfBjRp61iY
Volumetric display in the video above uses static projector whose pixels light up etchings inside solid glass.
by bananananna3654
1 subcomments
- This one uses a projector on oscillating rubber bands so that you can reach in and touch it: https://www.youtube.com/watch?v=4wwKOXxX9Ck
- I'm sure I'm not the only one who thought "why not vacuum", so I went and found the creator's reasoning [0] for why it's not a priority:
> [I]nside the dome the air quickly ends up rotating at the same rate as the rest of the mechanism. It's reaching its design speed with the motor at less than half duty cycle. Even if it were practical to make the whole thing airtight, it doesn't solve a problem that I currently have. The sound it makes doesn't come from inside the dome but from the motor in the base.
[0] https://www.youtube.com/watch?v=pcAEqbYwixU&lc=UgygtRUb6XZyu...
- Whoa, the intersection of different skills necessary is incredible.
- software
- math
- 3d printing
- electronics
Very impressive.
by polishdude20
1 subcomments
- This looks crazy good! I love how you made it easy to see how balanced it is.
Shameless plug, I made a similar thing but for bike wheels!
https://youtu.be/o8n-bu2kKnc?si=BPn8tRbFTiQROJg1
by limbicsystem
2 subcomments
- This guy's entire output is incredible (from alien tellitubbies onwards). Go moose!
https://mastodon.social/@ancientjames
by msuniverse2026
0 subcomment
- I wonder if you could have a vibrating chladni plate with sand on it and you match when the sand should jump with the light that's meant to be at that spot. You get the interruption of light looking like a mid-air pixel and then when it isn't needed it drops back down allowing light to pass through. Kind of like one of those mist-screens except there isn't mist where you don't need it.
by btbuildem
1 subcomments
- Before I watched the video, my brain ran ahead and I imagined it would be one of those led "fans", except also rotating around it's base. It might be harder to sync the two rotations, but you'd have much less mass in motion that way.
The solid state ones are cool! The real mystery there is how the pixel volume was manufactured -- it doesn't seem like something easily DIY'd
- I once considered making a spinning persistence of vision similar to this one specifically for visualizing lidar data from a spinning automotive lidar. The lidar has 128 beams and you could make a spinning array of 128 1D LED displays at exactly the same beam angles to recreate the point cloud from the lidar.
Anyway, I was too lazy to make it, but it's super neat to see that someone actually made something similar.
- Never knew this was possible. I hope some huge company with lots of resources jumps on this and drives up the resolution and price.
- interesting it is different than these kinds
https://www.youtube.com/watch?v=nM7wsXcYQFM
which I guess is the "volume" part
- Amazing, finally a refreshing, motivation source!
- Would be great having one of these hooked up to an LLM agent so it can be somehow “embodied”. Like a Siri + volumetric display + speaker. Waiting for a company to build this.
- DOES IT RUN DOOM?! seriously
- Doom or Quake renderer coming when?
Hacker News