These geodesic RGB LED spheres are absolutely stunning
While this project took him over 100 hours to complete, creator Whity claims that his glowing geodesic domes were worth the effort. As seen below, each dome is able to light up its triangular faces using WS2812B programmable LEDs embedded inside. The effect is mesmerizing on video, and has to be even more so in person.
The devices are controlled by an Arduino Nano, along with a MPU-6050 inertial measurement unit. A series of 18650 rechargeable batteries provide power for the numerous lights involved. Magnets hold the two halves of the spheres together for easy access, and the triangles were 3D-printed with hinges to make assembly easier.
Whity’s design comes in two sizes — a smaller 2V version with 80 faces and a diameter of 125mm, and a larger 3V model with 180 faces and a diameter of 180mm. Additional details are available here if you’d like to attempt this challenging build yourself!