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[BK7231T][WB8P] LEDVANCE SmartPlus Classic A60 Dimmable While Bulb E27 AC33908

d314 69 0
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  • #1 21756502
    d314
    Level 1  
    I have several of
    LEDVANCE SmartPlus Classic A60 Dimmable While Bulb E27 AC33908
    and was able to configure one to work with OpenBeken firmware.
    The flashing procedure have been done via tuya-cloudcutter using the existing profile:

    ledvance-smartplus-ac33908-dimmable-bulb-v1.1.4

    The official template with PWM on Pin 9 did no work in my case.
    The profile generated from tuya-cloudcutter json via Template importer
    
    {
      "vendor": "LEDVANCE",
      "bDetailed": "0",
      "name": "SmartPlus AC33908 Dimmable Bulb v1.1.4",
      "model": "TODO",
      "chip": "BK7231T",
      "board": "TODO",
      "keywords": [],
      "image": "https://cdn.idealo.com/folder/Product/201634/2/201634239/s1_produktbild_max/ledvance-smart-classic-wifi-dim-e27-9w-ww-ac33908.jpg",
      "pins": {
        "7": "PWM;4"
      },
      "command": "",
    }
    

    also fails.

    When I tried to toggle Pin 7 with GPIO Finder however, the bulb turns on and off.
    After several attempts to configure I settled on
    {
      "vendor": "Tuya",
      "bDetailed": "0",
      "name": "LEDVANCE SmartPlus Classic A60 Dimmable While Bulb E27 AC33908",
      "model": "AC33908,
      "chip": "BK7231T",
      "board": "WB8P",
      "image": "https://cdn.idealo.com/folder/Product/201634/2/201634239/s1_produktbild_max/ledvance-smart-classic-wifi-dim-e27-9w-ww-ac33908.jpg",
      "wiki": "https://www.elektroda.com/rtvforum/viewtopic.php?p=21756502",
      "flags": "13312",
      "pins": {
        "7": "PWM;1",
        "8": "PWM;2"
      },
    


    which allows to control the dimming via Channel 1 slider (The Channel 2 slider is set to Maximum).
    Such behavior is a little bit puzzling to me, so perhaps someone with more knowledge of the firmware can help me to understand why the working config is required to setup the second PWM on Pin 8?
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