Wait, there are already so many drivers for WS2811/WS2812 on crates.io? At the beginning I was not aware of that WS2811, WS2812, WS2812B, ..., WS2818 are basically the same. I just did not notice it.

The RMT peripheral of the ESP32 is used for controlling up to 8 LED "strands" (in whatever form factor the serially-chained LEDs are placed). These strands are independently controlled and buffered.

Abstract: A conventional offline single-stage light-emitting diode (LED) driver with a high power factor usually produces a significant twice-line-frequency ripple LED current, where the ripple LED ...

Abstract: The main objectives in driving multiple LED strings include achieving uniform current control and high-performance pulse width modulation (PWM) dimming for all strings. This study proposes a ...