Scanwheel is a drum style mechanical television you can build yourself
by tobr on 7/25/2026, 2:10:43 PM
https://github.com/AncientJames/Scanwheel/
Comments
by: iefbr14
Unfortunately the video link points to <a href="https://example.com/docs" rel="nofollow">https://example.com/docs</a>
7/25/2026, 5:01:08 PM
by: bensmoif
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.<p>Then get a grant and make one as wide as a city street
7/25/2026, 6:40:07 PM
by: CrzyLngPwd
Okay, that is genuinely amazing.<p>Love it, thank you for sharing and for being inspiring :-)
7/25/2026, 6:50:48 PM
by: josh-wrale
I can see this being applied to hubcaps in the future.
7/25/2026, 5:46:53 PM
by: pbronez
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…
7/25/2026, 7:45:24 PM
by: effnorwood
eat it hdmi
7/25/2026, 7:46:45 PM
by: lagrange77
Absolutely fantastic!<p>The video URL doesn't seem to be correct, through. ;)
7/25/2026, 4:50:34 PM
by: lstodd
about the same idea as nipkow disk<p>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.<p>edit: another, less sophisticated take is for example<p><a href="https://hackaday.io/project/191947-rotating-led-display/details" rel="nofollow">https://hackaday.io/project/191947-rotating-led-display/deta...</a>
7/25/2026, 7:03:30 PM
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7/25/2026, 5:06:45 PM