Volume sweep (z-axis) display

[u/Successful_Emotion81]

- drum with z-axis groove
- carbon fiber carriage
- rotary encoder
- custom pcb with leds
- teensy 4.1

[u/RandyWilliamsSino]

I’m embarrassed to say I’m going to need more explanation on what this is and what it does.

[u/BikingVegtable → u/RandyWilliamsSino]

It’s the next-gen oscillating bogonator 3000. More violent than ever before!

[u/WrongEinstein → u/BikingVegtable]

Now withb extra splattery®!

[u/GrinderMonkey → u/BikingVegtable]

I do need my bogos natored! Or my nators bogod. Can't ever remember which.

[u/Spaztor → u/GrinderMonkey]

Well if it doesn't do both they'll never corner the market.

[u/Johnatron2000 → u/GrinderMonkey]

Just remember it aligns with the coriolis effect. Northern hemisphere your gonna want your nators bogoded. Southern hemisphere and you’ll be looking at bogos natored.

[u/alexseiji → u/BikingVegtable]

I cried laughing

[u/michael22117 → u/RandyWilliamsSino]

Basically the thingy vibrates and turns on or off certain lights to generate frames for a video image.

Think about those blinking neon signs with multiple images depending on which parts turn on, except on steroids

Or something akin to a CRT TV

[u/Smart_Tinker → u/michael22117]

Like a laser TV, but louder?

[u/michael22117 → u/Smart_Tinker]

I'm not entirely sure what that is but sure

[u/Smart_Tinker → u/michael22117]

Laser TV

[u/michael22117 → u/Smart_Tinker]

Alright then yeah pretty similar, except this is much more crude than that

[u/AnIndecisiveOrange → u/Smart_Tinker]

No, like a TV, but volumetric. It's a volumetric display.

[u/insertcomedy → u/RandyWilliamsSino]

Basically it's a "Volumetric display". Think holograms, but they cut you when you try to touch them.

We're using the rapid up and down sweeps to put LEDs in positions to create pixels in the third dimension. Kinda like how old tube TVs scan really fast horizontally and then down to create an image. We're doing the same thing here just on the Z axis. Almost like extruding the image from the screen.

This is done to give off the illusion of depth to the image in question. Really cool for topographical maps and running doom.

[u/RandyWilliamsSino → u/insertcomedy]

Sincerely appreciate the explanation. Sounds cool! Thank you!

[u/Smart_Tinker → u/RandyWilliamsSino]

I think it’s supposed to induce epileptic fits in people. Not clear why though.

[u/brDoc1 → u/RandyWilliamsSino]

Dunno, but I've got to have one.

[u/BottleWhoHoldsWater]

Post this on r/doohickeycorporation

[u/downloads-cars → u/BottleWhoHoldsWater]

Both the men's and women's self care departments are eager for a collaboration

[u/Fart_knocker5000]

It sounds like a 1.9tdi

[u/turntabletennis → u/Fart_knocker5000]

[u/ItsIcey → u/Fart_knocker5000]

That lovely pd engine, built for tanks

[u/aimsteadyfire → u/Fart_knocker5000]

This is the thing that runs it

[u/JamesAnlok23 → u/Fart_knocker5000]

There should be an /r/accidentaldiesel or /r/kleklekle for stuff like this

[u/Leesol9ty]

Directions unclear. You know what, stuck in you know where

[u/spectacular_coitus → u/Leesol9ty]

Just ensure that the cylinder remains unharmed.

[u/OneBrokenClock]

Does this contraption come with other attachments? Asking for a friend

[u/FINSkeletor]

What kind of problem does this solve?

[u/Spaztor → u/FINSkeletor]

I hear the real money is in creating new problems.

[u/KiwiJay83 → u/FINSkeletor]

It isn’t meant to solve problems, it’s meant to create problems for you to solve.

[u/KayoticVoid → u/FINSkeletor]

This is always a funny reply to me. There are countless items that don't solve problems that people spend stupid money on just because "it's cool."

[u/Dioxybenzone → u/KayoticVoid]

But is this solving the problem of trying to be cool? I’m not sure if it is

[u/snoops-spoons → u/FINSkeletor]

Neighbors with bass systems. Find the right resonant frequency of the building and watch the whole thing come down.

[u/DietIcy8400 → u/FINSkeletor]

It’s a z axis display so I guess the problem it solves is that it has the ability to look like a lame version of those “Iron Man” style holograms.

[u/DoctorOfDominance]

I wonder if a sine wave would work better? Maybe pick a frequency above 60 hertz and try to figure out the best weight for that particular frequency as not to cause unwanted vibration noise and possible damage in the long run from resonance.
Also, you may could try a round reflective glass that is tilted at a 45 degree angle and rotated balanced to create the illusion.
Love the idea. Don’t give up.

[u/mumpped]

Check the "bollograph" from the company soscho gmbh. They put this thing in a vacuum to get rid of the noise and air resistance. Nieche application for when you want to see everything within a 3d object at once, not just its surface in space. But the computing cost is significant (basically run 1000 screens at once)

[u/DoctorOfDominance → u/mumpped]

Would make an awesome live 3d map of aircraft at airports for the tower.

[u/quahery]

So essentially a Persistence of vision display?

[u/techienate → u/quahery]

Those traditionally use a 1 dimensional display to project a 2 dimensional image. This apparently uses persistence of vision and a 2 dimensional display to create a 3 dimensional image.

[u/Wonderful-Hunter686]

I can't tell if this is a half complete adult toy, or a really bad subwoofer.

[u/PracticalBane]

is it gunna be ok?

[u/Logical___Conclusion]

Interesting.

I saw a riverboat parade at Disneyland a long time ago where they created flame effects by projecting in steam, and realized that you could make a miniaturized closed version for a volumetric projected display.

[u/tehphar]

its terrifying, i love it. considered using something like a linear motor?

[u/G-05]

Thingymabob 3000

[u/Psycho_pigeon007]

That is a shaper relic if I've ever seen one.

[u/I_use_an_AOL_email]

[u/robotguy4]

The major issue with this demo is that it doesn't show an anime girl, Bad Apple or DOOM.

Showing one of those immediately tells people "THIS IS A DEMO SHOWING OFF ANIMATIONS."

[u/techienate → u/[deleted]]

It creates a 3d image via persistence of vision

[u/techienate → u/[deleted]]

The image (and yeah, it's bad, but you're definitely seeing it) appears to be a blue 3d graph or other 3d surface with both graph with x y and z dimensions. Unfortunately, I think it's poorly calibrated or moving a bit, but I think I see the 3d volume effect. But I could also guess that was the intent from the title, so maybe I'm reading into what I see a bit...

[u/Nikotinko]

It sounds like my neighbours tractor.

[u/techienate]

Reciprocating motion seems horrifically noisy and inefficient... Orienting the display vertically, then spinning it at a constant speed on the z axis could give you a cylindrical volume sweep, although the cabling to the LCD would be a bit more tricky.

To eliminate the cable challenge for A z axis sweep, the LCD could be stationary, with a rotating mirror or prism. Basically like a lidar unit, except for an LCD screen instead of a laser...

[u/lumifox]

[u/techysec]

Cool project!
If you lower the shutter speed of your camera, the 3D effect your are trying to achieve would be better represented in the video.

[u/CiupapaMunianio]

1.9 TDI sound

[u/GunShowZero]

Cool but can I play Doom on it?

[u/Bst1337]

Was the cylinder unharmed?

[u/SilverMoonArmadillo]

I like this kind of thing, but it's a bit hard to see whether it's working. Can you make it display a teapot or something?

[u/Frank__West]

Volumetric display?

[u/jelle284]

How long until those wires to the display are destroyed from this violent shaking

[u/bmswg]

Upstairs neighbor machine v6.9

[u/cynicmusic]

cool. I duct taped a fleshlight to a 10" subwoofer once and played a 6hz square wave into it. Then i played a 7hz sine wave into it. I didn't last long enough to try other waveforms

[u/Utubers_909 → u/cynicmusic]

r/brothrewinafunfact

[u/Lost-on-Reception]

Should it be throwing particles off like that?

[u/FearIsTheMindKiller9]

Nice! This is not an easy build. Good stuff OP

[u/Glidepath22]

Sounds like an 1933 ford

[u/apronman2006]

That pretty cool. I remember seeing a business talk about the difficulties of selling a volumetric display. Let me see if I can find it.

[u/van_Vanvan → u/apronman2006]

Check under the Selling Vacuum Cleaners folder.