ESP 8266, WLED and MeanWell power supply problem - Can't power LEDs with power supply only

  • Hi to you all,


    i'm really new here and used the google search a lot since yesterday. :-(

    since a friend of mine recommended hyperion as an alternative for hue gradient. i want to use hyperion for my pc so, i bought the hardware and come across some problems, which i cant really get my head around.


    the hardware:

    - ESP 8266 with wled installed

    - WS2812b strip, cut down for testing to 74 leds,

    - MeanWell Power Supply LPV-60-5

    - USB Power Supply with 1.2 amps (5V)


    the setup (working):

    - USB Power Supply to the ESP and the VIN, GND and D4 with dupond pins to the Strips connector

    - Hyperion WLED setup


    the setup not working:

    - temporary USB power supply to the ESP to power it

    - D4 to the Strip

    - MW power supply to the Strips positive and negativ.

    - Hyperion WLED setup


    The problem is:

    If i'm using the MW power supply directly on the strip, only a few (some times 1, some times up to 5) only work and all of them flicker and blinking on their own. They don't get the right signal or interprete the signal.

    my guess was, that the power supply is broken, but it gave me slightly above 5V (5.22V) after testing it with a multimeter.


    And since it is a LED power supply their should'nt be any missing components, which the ESP have.

    I wish i could power the strip directly via the esp, but the information is clear about the maximum amps, and i need more than 1 amps for the whole "around the monitor" project.


    Since i want to give the signal over USB from my PC to minimize latency, i don't want to use an usb power supply for the ESP. And the LED count limit from the ESP is the second reason why i need the power supply :-(


    Pictures from the setup:

    - Not working (Dupond connection from MW to the strip, testing only... wire connection was implemented, but cut out again due to not working)


    - Working, leaving the MW power supply out, only ESP for power


    - the MW power supply



    Hope you can help.

    Any ideas?

  • Go to Best Answer
  • Quote from rc-1189

    the setup not working:

    - temporary USB power supply to the ESP to power it

    - D4 to the Strip

    - MW power supply to the Strips positive and negativ.

    - Hyperion WLED setup

    There is no GND from the power supply unit to the ESP!

    You always need a common ground.


    Signal over USB is limited in the baud rate so in most cases it is not a good idea.


    regards pclin

    Dreambox ONE / TWO
    Amlogic S922X - 53.000 DMIPS - 2 GB RAM - 16 GB Flash - Twin-DVB-S2X Tuner - HDR10 - HLG
    -
    AudioDSP: miniDSP 2x4HD - Lautsprecher ELAC
    LG 65' SUHD
    -
    hyperion (classic) & Plugin HyperionControl | hyperion-ng alpha.10 (dreamOS)
    Hyperion-ng (Debian Buster)
    -
    6 x Wemos D1 mini - WLED - SK6812 RGBW-NW 60 LEDs/m
    5-Port HDMI Switch - FeinTech VSP01201 - Grabber Macrosilicon


    snoozer_likelinux_manvtkns.gif


    Ambilight for ever

  • So I add a cable from ESP GND pin to the power supply negativ (GND) as a bridge to create a common ground?


    Will try that later this afternoon.


    What do you exactly mean by the statement with the signal over USB? Should I stay with WLED over wifi and don't use the USB Port from my PC for the signal?


    Best regards and thanks in advance.

  • Should I stay with WLED over wifi and don't use the USB Port from my PC for the signal?

    Yes, latency is no problem.


    USB Adalight/Momo Baudrate 115200


    regards pclin

    Dreambox ONE / TWO
    Amlogic S922X - 53.000 DMIPS - 2 GB RAM - 16 GB Flash - Twin-DVB-S2X Tuner - HDR10 - HLG
    -
    AudioDSP: miniDSP 2x4HD - Lautsprecher ELAC
    LG 65' SUHD
    -
    hyperion (classic) & Plugin HyperionControl | hyperion-ng alpha.10 (dreamOS)
    Hyperion-ng (Debian Buster)
    -
    6 x Wemos D1 mini - WLED - SK6812 RGBW-NW 60 LEDs/m
    5-Port HDMI Switch - FeinTech VSP01201 - Grabber Macrosilicon


    snoozer_likelinux_manvtkns.gif


    Ambilight for ever

  • Okay. last question, befor soldering everything together :-D

    Does this look right?


    Green line would be USB ... but will power and theirfore possible shortage and shouldn't be done


    So better this one. would this have the "common ground" goal achieved?


    regards

    • Best Answer

    Both will work!

    In pictuire 1 you don't need 5V from PSU but it's also no problem.


    I would prefer picture 2.


    regards pclin

    Dreambox ONE / TWO
    Amlogic S922X - 53.000 DMIPS - 2 GB RAM - 16 GB Flash - Twin-DVB-S2X Tuner - HDR10 - HLG
    -
    AudioDSP: miniDSP 2x4HD - Lautsprecher ELAC
    LG 65' SUHD
    -
    hyperion (classic) & Plugin HyperionControl | hyperion-ng alpha.10 (dreamOS)
    Hyperion-ng (Debian Buster)
    -
    6 x Wemos D1 mini - WLED - SK6812 RGBW-NW 60 LEDs/m
    5-Port HDMI Switch - FeinTech VSP01201 - Grabber Macrosilicon


    snoozer_likelinux_manvtkns.gif


    Ambilight for ever

    Edited once, last by pclin ().

  • It's working :-) the "common ground" did the trick. I'm so happy right now and thank you very much.

    :-)

    now i can start extend the length and add the sides to my monitor :-) currently only the bottom line is setup for testing. :-)

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