SK6812 Stripe not working

  • I have a problem lighting up my SK6812 LEDs. It’s a 5m with 60 LEDs per meter. I’m using a 5V 100W 20A power unit.


    But with or without the WLED ESP32 controller the LED stripe isn’t lighting up.


    I’ve tried to power it directly to the power supply but also no LED is glowing.


    What cause the problem?

    Shouldn’t the stripe a least light up with only +5V and Ground connected?


    The power supply delivers 5,35V at the output

  • with SPI controller, you need to increase the SPI buffer in cmd.txt

    Out of my head 102... something

    Be careful and put in the line at last, if not correct then Raspi ain't booting anymore and you have to fix the code again.


    Ofcourse SPI enabled in:

    config.txt. 》》》 dtparam=spi=on

    GPIO10 is pin 19. (Data)

    GPIO11 is pin 23 (clk)


    This is standard for SPI dev0.0


    Baudrate very high: 5900000 (something like this) you can search the forum for correct settings.



    Ledstrip will only light up if or PWM or SPI data is being transferred to the strip


    note; sometimes you need a levelshifter to get it to work but sometimes also without.

    I should first try it without :) 😀

    Goodluck

    Edited once, last by Ambient_theater77: Merged a post created by Ambient_theater77 into this post. ().

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    With ESP/WLED wiring and configuration?

    Without ESP/WLED wiring and configuration?


    With ESP/WLED it is very easy to get the SK6812 RGBW running.

    Connect and configure, then the LED with WLED colors and effects must work immediately.

    If Hyperion is configured accordingly, it should work.


    regards pclin

    Dreambox ONE / TWO

    dreamOS OE2.6

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    LG OLED65BX9LB (PicCap, hyperion.NG webOS)

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    hyperion (classic) & Plugin HyperionControl | hyperion-ng 2.0.16-beta.1 (dreamOS)
    Hyperion-ng (Debian bullseye)
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    6 x ESP32/Wemos D1 mini - WLED - SK6812 RGBW-NW 60 LEDs/m
    FeinTech VSP01201 - Grabber Macrosilicon

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    Ambilight for ever

  • It’s with an ESP WLED Controller. But I think the stripe is broken at one point.


    I connected the data channel to the non working leds, so I skipped some working leds, and suddenly they turned black.

    Restarting the controller brought back the leds until the point the leds didn’t work.


    Hope I could describe understandable what I did 😅

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