SS4H-LumiHex ESP32 Smart Panels – Open-Source RGB Hexagon System for Next-Level Ambient Lighting – Smart Solutions for Home
https://smartsolutions4home.com/lumihex/
In this article, I’ll show you how I built my own version of modular RGB lights. Not only do they look great, but they also have Wi-Fi, so you can hook them up to any open “smart” system – Home Assistant in my case.
Arduino Forum - Hue-controllable RGB LED lamp
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1207331496
The hardest part was converting HSB into RGB - the equations that I worked on from wikipedia are an absolute nightmare to translate into code (at least for me at this stage). I was about to give up when I saw this link, full of ready-made colour conversion functions: http://www.easyrgb.com/math.php?MATH=M21#text21.