Scanwheel is a drum style mechanical television you can build yourself
github.comUnfortunately the video link points to https://example.com/docs
From git history on the readme.md
Also, the second picture is a video link with the correct URL.
It's stunning. The video speaks for itself. Please scale this up, like way up back of a truckbed size. This would be delightful to see spinning and running IRL.
Then get a grant and make one as wide as a city street
I can see this being applied to hubcaps in the future.
Okay, that is genuinely amazing.
Love it, thank you for sharing and for being inspiring :-)
Absolutely fantastic!
The video URL doesn't seem to be correct, through. ;)
> Avoid use in operations.
Oops
How do you get the flashing LED synced up to the spinning pinholes? Maybe the motor provides some positioning feedback so you just have to line it up once…
eat it hdmi
about the same idea as nipkow disk
nowadays when people don't want to go the rotating led bar way, which requires very high density led strips (hundreds of ~200-400 mil smd leds) and the accordingly complex control circuitry (basically an FPGA per bar + high speed bus, etc), they do nipkow disk but with individual leds instead of holes. this way you can get away with tens of leds while still having a reasonable sized picture and not that much bandwidth to drive it.
edit: another, less sophisticated take is for example
https://hackaday.io/project/191947-rotating-led-display/deta...
I mean if you squint hard enough, it's the same idea as a cathode ray tube. Each hole scans across the "screen" for the desired width, then the next hole down takes over, which does the same. Back in the day, you'd get an interrupt when the reset happened, and you could recalculate your sprite position before the next line got scanned.
Very cool seeing this implementation though. Congrats, OP!