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[BK7231N/CB2L] [KP18068] LSC LED Smart white and color ambiance E27 9.4W 806lm 2578539

lucgfx 2385 1
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  • First time playing with flash. Bulb with action, none of the configurations fit. The bulb has been present in at least 3 revisions. One of the forums had identical packaging but on the BP module. Tuya cloud-cutter does not work due to version 1.5.21.

    I disassemble the bulb, remove the cover with a knife, then glue it around the LED board and take it out. Access to the pins is sufficient without further disassembly as in the photos. Pins RX1, TX1 are available without desoldering the element. We solder and connect, I used cp2102. We download BK7231GUIFlashTool and make a backup, and then flash OpenBK7231T_App. During the module reset message, I disconnected the pin from ground and it went away.

    Experience acquired, always check the controller. It turned out that I had KP18068 and not like other BP revisions... but the KP18058 driver works correctly. The color mapping still needs to be improved and you need to create a startDriver:

    startDriver KP18058
    KP18058_Map 1 2 0 4 3


    Below are the photos and the ready json for import.

    {
      "vendor": "LSC",
      "bDetailed": "0",
      "name": "LSC LED Smart white and color ambiance E27 9.4W 806lm 2578539",
      "chip": "BK7231N",
      "board": "on pcb",
      "flags": "0",
      "keywords": [
        "RGBCW",
        "LED",
        "Action",
        "E27",
        "bulb",
        "KP18068",
        "CB2L"
      ],
      "pins": {
        "7": "KP18058_CLK;1",
        "8": "KP18058_DAT;0"
      },
      "command": "\"backlog startDriver KP18058; KP18058_Map 1 2 0 4 3\"",
      "image": "https://obrazki.elektroda.pl/7583804800_1712132196_thumb.jpg",
      "wiki": "https://www.elektroda.com/rtvforum/topic4046526.html"
    }
    


    CP2102 module connected to a board via wires. Close-up of the interior of a smart LED bulb showing electronic components. Close-up of the inside of a smart bulb, showing a PCB with the label BK7231N. Close-up photo of a circuit board with marked RX1 and TX1 pins. Close-up of an LED bulb with visible technical markings. Packaging of the LSC Smart Connect E27 smart bulb.

    Cool? Ranking DIY
    About Author
    lucgfx
    Level 1  
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    lucgfx wrote 1 posts with rating 1. Been with us since 2010 year.
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  • #2 21031132
    p.kaczmarek2
    Moderator Smart Home
    You`re very lucky that RX and TX are available. In the photo I can see that the manufacturer probably cut out a special place in the PCB for them. When I flashed a similar product, I had to desolder the entire module:



    Good to hear that the KP18058 driver works. The protocol of this system was unknown, I had to figure it out using a logic analyzer, details in this topic:
    Reverse engineering of an unknown I2C protocol with the Sigrok analyzer using the example of an LED controller
    Helpful post? Buy me a coffee.
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