The trickiest part of any round pendant like this is getting truly clean concentric circles out of plywood, and the maker tackled it with a handheld router riding a circle cutting jig. Whole sheets get stacked and the rings come off them concentric, which the maker says made the whole project pretty simple. For anyone hesitating over that jig, it costs roughly forty dollars, and building one from scratch looks like an hour or two of work at most.
Each ring is a sandwich of three plywood layers, with the middle layer cut a half inch smaller in radius than the faces. That offset leaves a recess three quarters of an inch wide and half an inch deep, just right for flexible LED channel. The faces are walnut plywood, the rims get covered with two inch wide walnut veneer pressed on with a heat gun and roller, then trimmed and sanded. Putty hides flaws before a Danish oil finish goes on, and the grain shows nicely under the medium-dark stain.
The detail that stands out to me is the strip choice: SK6812 strips in warm white, cool white and amber rather than RGB. In solid white mode the rings throw different shades of white, which keeps the fixture looking grown-up in the living room and lets the music reactive mode stay incognito. An Arduino Mega clone drives the visualization from an electret mic, an RF remote handles control, and thin aircraft cables do the hanging.
One trade-off to note: the maker describes the shared code as very crude, and a prebuilt controller for addressable strips could replace the Mega entirely.
Project by Modustrial Maker. Watch it on their YouTube channel: