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Thread: WS2811/WS2812 Extender board...

  1. #1
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    Default WS2811/WS2812 Extender board...

    Hey folks,

    I'm in the design phase for some old-school (though-hole) LED ornament decorations; they are going to be single-color LEDs but I at least wanted the capability to turn them on and off and dim them.

    Since my controllers speak WS2812, I ended up building a little board I'm calling the WS2811 expander. You talk to it using the WS2812 protocol, and it has 3 separate outputs that can drive whatever you want. It supports either 5v or 12V loads, and can handle 4 amps @ 12V across all three loads (ie red, green, and blue) or 8 amps @ 12 V across a single load. I thought that since I found it useful, it might be useful to others, so I made a few up for sale.

    More information including a demo video (with boring light bulbs) here.

  2. #2
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    Jun 2017
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    Default Re: WS2811/WS2812 Extender board...

    Hey.

    Can you share the schematic and the view of this module's board?

  3. #3
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    Default Re: WS2811/WS2812 Extender board...

    Sure.

    Here's the schematic:

    WS2812 expander schematic.jpg

    And here's the board view:

    WS2812 expander board.jpg

  4. #4
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    Default Re: WS2811/WS2812 Extender board...

    Thank you for sharing.

    greetings

  5. #5
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    Default Re: WS2811/WS2812 Extender board...

    Very cool! I was thinking of design something similar. You just saved me the hassle. Thank you.

  6. #6
    Join Date
    Oct 2011
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    Scotland, UK
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    Default Re: WS2811/WS2812 Extender board...

    I've signed up for stock notification on Tindie - would be ideal for converting some of my floods, thanks!

  7. #7
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    Default Re: WS2811/WS2812 Extender board...

    Cool. I'd suggest ordering a single board to verify that it will work correctly for you before doing more.

  8. #8
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    Default Re: WS2811/WS2812 Extender board...

    Quote Originally Posted by EricGunnerson View Post
    Cool. I'd suggest ordering a single board to verify that it will work correctly for you before doing more.
    Iím sure they will work great for driving 12v single colour floods. I also have some RGB strips which this would control nicely!

  9. #9
    Join Date
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    Default Re: WS2811/WS2812 Extender board...

    We think alike! Last January I needed a similar board to drive some dumb RGB signs so I made a PixelSSR so they could be spliced into a normal WS2811 feed... I used PC817 optos and KSC2328AYBU transistors instead of MOSFETs, but they can handle plenty of juice, too. I like your design though! Good job!

    pixel_ssr_x4.jpg
    Last edited by dirknerkle; 05-18-2019 at 09:25 AM.

    http://digwdf.com/store/
    The DIGWDF Store is closed for all sales. Thanks to everyone who supported us through the years!
    User guides, documentation and other files are still free and available for downloading.

  10. #10
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    Default Re: WS2811/WS2812 Extender board...

    Thanks. I went with the MOSFETS partly because they can handle a lot more current and partly because they'll have quite a bit less voltage drop than the bipolars.

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