Fibonacci128 is a beautiful 86mm circular disc with 128 RGB LEDs surface mounted in a Fibonacci distribution. Swirling and pulsing like a colorful galaxy, it's mesmerizing to watch.
https://www.evilgeniuslabs.org/fibonacci128
Driven with a Wemos D1 Mini ESP8266 and a 74HCT125 level shifter shield: https://www.evilgeniuslabs.org/mini-wifi-led-controller
