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: This paper proposes a retinex theory-based approach to RGB-to-RGBW conversion that preserves the human color perception within a pre-determined level of color distortion for RGBW displays.

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...