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Thread: Is this a way to cheat on power injection?

  1. #1
    Join Date
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    Default Is this a way to cheat on power injection?

    Sorry for yet another Noob question

    Imagine the attached image is a single 100-pixel WS2811 5v string mounted on a window frame. (I've left a big gap between the start of the string and the end of the string for illustrative purposes.)

    Assuming I've properly fused things, is this a way to cheat on power injection? Can I simply solder my positive and negative wires from my power supply in the middle of a string so power goes in both directions and that way I'm not having voltage drop after 50 pixels?

    Will this work?

    PowerInjection.jpg
    Last edited by L1011; 01-11-2017 at 05:00 PM. Reason: Clarity

  2. #2
    Join Date
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    Default Re: Is this a way to cheat on power injection?

    Yes

  3. #3
    Join Date
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    Default Re: Is this a way to cheat on power injection?

    Hi, yes that will work fine. You could have equaly fed at the start (same place as the data) and at the end (just next to it).
    If you had 350 pixels you could feed at the start (feeds 0->50), at 100 (feeds 100->50 & 100->150), at 200 (feeds 200->150 & 200->250) & at 300 (feeds 300->250 & 300->350).
    You would need 3A minumum supply / fuse for the first (50 pixels) and 6A for the others (100 pixels).
    Last edited by Barnabybear; 01-11-2017 at 05:20 PM.

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