Volumetric displays are simply cool. Throw some LEDs together, take advantage of persistence of vision, and you’ve really got something. [Nick Electronics] shows us how its done with his neat little volumetric lamp build.
The concept is simple. [Nick] built a little device to spin a little rectangular array of LEDs. A small motor in the base provides the requisite rotational motion at a speed of roughly 6000 rpm. To get power to the LEDs while they’re spinning, the build relies on wire coils for power transmission, instead of the more traditional technique of using slip rings.
The build doesn’t do anything particularly fancyβit just turns on the whole LED array and spins it. That’s why it’s a lamp, rather than any sort of special volumetric display. Still, the visual effect is nice.Β We’ve seen some other highly capable volumetric displays before, though. Video after the break.
Funny, I was in a Utron rabbit hole on youtube this morning and this video popped up in the side feed.
The joke in the video was well placed!
Very cool. It might be cooler still if the coil on the base of the LED assembly was fabricated such that spinning it above stationary magnets in the base formed an alternator to power the LEDs.
Which could also provide a rotational index mark.
Small enough to put into a vacuum jar.
Gotta mention mitxela’s build on youtube