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WS2812B VS WS2811 — Parallax Forums

WS2812B VS WS2811

I have a Neo Pixel ring from Adafruit listed as a ws2812B on their website. I also have a string of ws2811 by Alitove from Amazon.

I have them both working together just fine on an ESP32.

When I connect them to my P1 Flip using the example code from the Parallax OBEX only the 2812B works. The 2811 string does nothing, that is until i disconnect the signal wire and the the 2811 leds are lit with different colors.

I'm guessing this is a timing problem but i have no idea where to start or what to look for. Any and all help is appreciated.



  • JonnyMacJonnyMac Posts: 8,387
    edited 2022-02-10 21:41

    The WS2811 is different from the WS2812b in two ways
    1. The bit timing is different (though it sometimes works)
    2. The red and green byte order is swapped.

    I wrote the attached driver a long time ago and have kept it updated because many pros use it. If you've been watching "The Book of Boba Fett" a couple of the robots in the show have this driver inside. If you want to mix WS2811s and WS2812bs you will need to launch separate driver cogs.

  • Thanks Jon

    Just what I needed, works great. Now I can have multiple sequences working on a single string !


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