Print an Arduino-powered color mechanical television
spectrum.ieee.org
Print an Arduino-powered color mechanical television
1–10 of 16 posts
Re: Print an Arduino-powered color mechanical television
#2Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights.
(Hopefully someone can visualize what I mean.)
Re: Print an Arduino-powered color mechanical television
#3Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights. (Hopefully someone can visualize what I mean.)
[deleted]
Re: Print an Arduino-powered color mechanical television
#4Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights. (Hopefully someone can visualize what I mean.)
There are little toy fans with 8 or so leds on the blades that do this...show a word while the fan spins.
Re: Print an Arduino-powered color mechanical television
#5Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights. (Hopefully someone can visualize what I mean.)
Better yet, move the matrix in the normal axis to put your pixels in 3D space.
https://www.google.com/search?q=swept+volume+display
For something less cutting edge, you can spin a bar with individual LEDs instead of a disk full of holes. Also makes for a good DIY project now that we have the microcontrollers to do it without specialized slip rings. But contrary to popular use, neither of these is a 'holographic display' as they don't use holography!
Re: Print an Arduino-powered color mechanical television
#6Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights. (Hopefully someone can visualize what I mean.)
There are little toy fans with 8 or so leds on the blades that do this...show a word while the fan spins.
Ans SUPER expensive ones that appear to make a 3D hologram in the air.
However, wouldnt it make sense to change the shape from a square to a wedge/arc that more accurately follows the arc of its orbit and resulting in a tighter pitch between scan line?
Re: Print an Arduino-powered color mechanical television
#7I was surprised it looks as good as it does. Amazing.
Re: Print an Arduino-powered color mechanical television
#8Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights. (Hopefully someone can visualize what I mean.)
check out the suspected new displays in the next oculus headset https://www.androidcentral.com/gaming/virtual-reality/quest-...
Re: Print an Arduino-powered color mechanical television
#9That's cute. I considered doing that back when I was doing steampunk props.
I'd like to see someone revive Scophony.[1] That was the best of the mechanical television systems. It's a much brighter system, because a whole line is illuminated once, not just one pixel at a time. 9' x 12' projectors were built, at 405 lines. The "super-sonic light valve" is the only hard part. That's a long, narrow liquid tank with a transducer at one end. You could probably use a prism from an old laser printer for the fast scanning direction, and 3-phase drone motors to drive the mirrors. Keeping the mechanics in sync would not be hard with modern motor controllers.
Re: Print an Arduino-powered color mechanical television
#10Hmmm, it's tiny... but what about a bigger matrix of LEDs that can be moved around just a little bit. The idea I guess is time-multiplexing lights in space... So if you have a big board with a grid of LEDs and shake it around a bit, you can do the same thing but with less movement and more lights... You get more pixels for the same number of lights. (Hopefully someone can visualize what I mean.)
No post body was provided.