The detail that caught me off guard is the density: hundreds of individual square LEDs packed into a phyllotaxis spiral, the same seed arrangement you find in a sunflower head. ldirko built this as Splendida 256, a circular display set into a rectangular framed backing, and the demo reel runs a whole sequence of effects across it.
Construction mixes techniques. The shell is 3D printed, and the diffusers are laser cut. The front is a circular white faceplate pierced with cells matching the spiral layout, held around its rim with metal screws. ldirko created the 3D model and shared a link to it in the GitHub readme, and the demo reel code lives in a repository as well.
The effects are worth watching closely. There are red and orange flame animations, rotating multicolor rainbow pinwheels, geometric spinning outlines, pulsing floral shapes, and a green cascading rain pattern. The illuminated LEDs read as a full rainbow spectrum across the face, and the Fibonacci arrangement gives the rotating patterns a symmetry that feels organic rather than grid-like. A hand reaches behind the top of the casing to press a switch and power it on, a nicely ordinary moment in an otherwise polished piece.
One thing stays open: the controller board, wiring, and specific LED models are all concealed inside the housing, so the internals remain unclear. I would love a peek at what drives those hundreds of addressable squares. Even without that, this is a confident build, and the shared model and code make it more than just eye candy.
Project by ldirko. Watch it on their YouTube channel: