Here's an updated version of my FastLED to Processing experiment. Now with the option - FastLED Archive - Maker Forums
Blink Fast LED - Arduino simulator- Basic Example - 2022 - Hackster.io
GitHub - Resseguie/FastLED-Patterns: Repeating sequence of color patterns as examples for using FastLED with a strand of LEDs, like the Adafruit Neopixels.
How to control an LED pixel strip (WS2812B) with an Arduino and the FastLED library - Michael Schoeffler