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Identifying LEDVance COB Magic+RGB 3m 24V 3-Pin LED Strip Control Protocol

Arak0n 288 3
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  • #1 21811729
    Arak0n
    Level 2  
    I have an unknown LED strip here. It's a "LEDVance COB Magic RGB" 3 m COB LED Strip. The strip is powered by 24 V and uses 3 pins (the connector has 4 pins, but one is not connected).
    It comes with a controller that has a Tuya CBU module. I was able to dump the module just fine and flash Openbeken on it. However, no matter what I try, I cannot control the strip, or even get it to light up at all. I also connected the LED strip to an ESP8266 with WLED, and tried all the config options for the LED type, but none will make it light up.
    If I restore the backup of the CBU, it will work just fine right away again.

    Anyone have any idea what kind of LED strip this is?

    PCB with LEDVance Tuya CBU module and wire connections visible. Close-up of COB RGB LED strip with 4-pin connector labeled 24V and directional arrow LED controller board with capacitors, resistor, and labeled wire terminals.
    Attachments:
    • readResult_BK7231N_QIO_2026-17-1-16-07-19.bin (2 MB) You must be logged in to download this attachment.
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  • #2 21811734
    divadiow
    Level 38  
    Code: Text
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    maybe P0 needs to be assigned AlwaysHigh?
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  • #3 21811736
    Arak0n
    Level 2  
    But that would only apply to the CBU controller, not the WLED one, right?

    Added after 5 [hours]:

    Got it figured out.
    The circuit requires P24 to be "AlwaysHigh" to enable power to the strip.
    Once that was set, I was able to use Openbeken normally.

    Edit: And now realized what it does. P24 essentially turns off the 24V power supply to the LED strip when the strip is turned off.
    Is it possible to do this in Openbeken, too?
  • #4 21812410
    divadiow
    Level 38  
    Arak0n wrote:
    The circuit requires P24 to be "AlwaysHigh" to enable power to the strip.

    ah yes, P24 is seen in further extraction from your backup

    Code: JSON
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    boot log
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