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[LN882H] [WL2S] Elivco 20A BSD34 EU Power Monitoring Plug [BL0937]

divadiow 9030 35
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  • #31 21021691
    p.kaczmarek2
    Moderator Smart Home  
    @beloborodom in the past days I also integrated a threading fix for MQTT from LWIP library that was also applied to BL602 in the past and also helped:
    https://github.com/openshwprojects/OpenLN882H/commit/15fde0f403e408eab6ffa31d0e5711e97c37afe2
    GitHub commit view showing a fix for MQTT in the LWIP library.
    Helpful post? Buy me a coffee.
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  • #32 21431813
    andraskszabo
    Level 4  
    I have the same BSD34 smart plug and could flash it with openBKN without issues (even without desoldering the module). It works great with HomeAssistant und mqqt.
    The only issue I have is the red LED is always on regardless of the relay state. Any ideas?
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  • #33 21431833
    p.kaczmarek2
    Moderator Smart Home  
    Use GPIO Doctor to find out which pin is used for LED. Or do Tuya config extraction. Was this LED controllable in Tuya firmware?
    Helpful post? Buy me a coffee.
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  • #34 21433856
    andraskszabo
    Level 4  
    Thank you for the tipps.

    I played around and it looks like that pin 8 controlls the button and relay blue LED and 23 the red one indication WiFi connection status

    "pins": {
    "6": "BL0937CF1;0",
    "7": "BL0937CF;0",
    "8": "LED_n;1",
    "10": "Btn;1",
    "23": "WifiLED;1",
    "24": "BL0937SEL;0",
    "26": "Rel;1"
    },
    Attachments:
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  • #35 21437255
    divadiow
    Level 34  
    andraskszabo wrote:
    I have the same BSD34 smart plug

    100% the same in terms of appearance, label markings, module, chip?
  • #36 21438406
    andraskszabo
    Level 4  
    They look exactly the same, see pictures. They were sold under SURFOU branding on Amazon.
    The modules are CBS2 by the way...
    I bought them as a 4er pack and they did not even had the same charge of modules. two were "normal" CBS2s and two were those, where the pin marking were swapped (I guess on purpose...)

    Close-up of an electrical plug labeled model BSD34 on a wooden surface.
    White smart plug on a wooden table.
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Topic summary

The discussion revolves around the Elivco 20A smart plug featuring power monitoring capabilities, utilizing the LN882H chip. Users share insights on flashing the device with OpenBeken firmware, troubleshooting issues related to the BL0937 driver, and the functionality of the ping watchdog mechanism. Several contributors provide updates on their experiences with the device, including successful firmware updates and connectivity tests. The conversation highlights the collaborative efforts in developing drivers and firmware, addressing issues like WiFi reconnection failures, and sharing code modifications to enhance functionality. The community also discusses integration with Home Assistant (HASS) and MQTT performance improvements.
Summary generated by the language model.
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