A decorative lamp with bright white LEDs on the sides of a reflective icosahedron. This was a prototype before a larger build that I have so far not decided to go on with. I did not plan much of the build but rather made it up as it went along.
Initially I constructed a model in software to be able to test different placements of LEDs to find a suitable size of the icosahedron. Then I produced a complete icosahedron for the body but in the end I decided to take the bottom part out and mount it on a foot instead.
Each side in the icosahedron has four LEDs in series. Ground is connected along the body to a rail in the bottom. Current is supplied through resistors joined at the center.
The driver board is based on a 555 timer, that generates a PWM signal for dimming, controlled by a potentiometer. It snaps into the bottom of the body and carries the entire construction.
The foot is just a modified furniture foot with a DC plug for the 15V supply and an extension of the potentiometer to be able to adjust the brightness in the open bottom.