You may have seen references to "WS281X" in places like pages in our wiki and our 101 manual. WS281X is not a new kind of IC variant but instead is a name we use to broadly refer to the many IC variants in WorldSemi's WS281X family.
Such variants include WS2811, WS2812B, WS2813, WS2815 and WS2818. Further details about a particular variant are provided on that variant's dedicated wiki page. Details such as voltage, whether the IC is integrated into the 5050 RGB LED package or a separate component and how many wires there are (some variants have an extra data line for backup purposes).
Such variants include WS2811, WS2812B, WS2813, WS2815 and WS2818. Further details about a particular variant are provided on that variant's dedicated wiki page. Details such as voltage, whether the IC is integrated into the 5050 RGB LED package or a separate component and how many wires there are (some variants have an extra data line for backup purposes).
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Pixel IC pages
RGB pages