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.
This is a toolhead for the v0.2 Voron printer. It will also work on the various Printers for Ants. There are also Mounts available to use this toolhead to the Voron Trident, v2.4, Switchwire and ...