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Exploring Tuya ES E27 IoT Lamp Bulb Holder with CB2S/BK7231N Module [TYWI-BL-E27]

divadiow 402 3
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  • Helpful post
    #1 21469563
    divadiow
    Level 34  
    A quick tour of a generic Tuya IoT lamp/bulb holder base - ES/E27 fitting.

    Ali Express https://www.aliexpress.com/item/1005006313858972.html
    E27 lamp holder base with WiFi and voice control.

    Box and product internals/externals
    Lamp holder packaging with technical specifications. Packaging of Smart E27 lamp holder. Section of a blue box with a barcode and product label TYWI-BL-E27. Blue box with a list of connectivity technologies: RF433, BLE, WiFi+BLE (checked), and ZigBee. Wi-Fi Smart Lamp Holder. Hand holding an LED bulb with connector details. Light bulb adapter with an E27 socket on a white background. Close-up of the interior of a plastic casing with red wires. Disassembled lighting adapter with visible electronic circuit. Open light bulb adapter with visible electronic components and screws on a wooden surface. Disassembled LED bulb with visible internal components on a wooden table. Open casing of an electronic device showing its interior with a circuit board and attached components. Interior of an electronic device with visible circuit components. Mounting parts on a wooden table, including a light bulb holder, screws, and a metal bracket. Light bulb socket with visible metal components and electrical wires. Electronic circuit board with components and red wires. The photo shows a circuit board with various electronic components, including a GuoKE relay and capacitors. Metal screws and a brass bracket on a wooden surface. Blue circuit board with various metal connections and traces, with an orange wire on the right side. Circuit board with electronic components and red wires. Electronic module with a blue PCB and connected red wire.

    Standard CB2S/Beken BK7231N Tuya module.

    From TX2 boot log:
    Code: Text
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    VCC, GND, TX, RX soldered ready for dump/flashing with Easy Flasher
    Printed circuit board with soldered wires. Circuit board with connected wires on a workbench.

    Code: JSON
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    Code: Text
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    Full storage
    Code: JSON
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    Interestingly they've used a Qiachip model and device schema
    Code: Text
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    So Tuya app detects it as such
    App screen for adding devices, showing search for QIACHIP Smart Switch. Interface of the QIACHIP Smart Switch app with the button turned on. App settings screen on a smartphone with three options: Switch Log, Relay Status, and Child Lock. Mobile app interface with an option to add a new schedule. Device update screen indicating no updates available.

    KR2201WB3 = https://qiachip.com/products/qiachip-kr2201wb-wifi-remote-control-without-rf

    OBK template
    Code: JSON
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    WifiLED or LED, depending on preference, or setup an autoexec to change function after wifi connection.

    Close-up of a copper light bulb socket with a white adapter featuring a glowing green LED. OpenBK7231N user interface with diagnostic information

    Also worth noting that the gold screws are soldered into the main PCB from inside the fitting, but they unscrew easily from the solder. Also worth adding a bit of flux when putting back together so the solder can be reflowed around the thread from the top before case closure.

    Keywords:
    DT0005
    GuoKE
    GK2FF-5VDC-S-A
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  • #2 21470442
    p.kaczmarek2
    Moderator Smart Home  
    So your piece also had so hardly accessible button? I have the same device and wasn't sure whether it's by design or a production error.
    Helpful post? Buy me a coffee.
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  • #3 21470579
    divadiow
    Level 34  
    yes! I thought I'd lost a tiny bit of plastic or something...
  • #4 21470607
    p.kaczmarek2
    Moderator Smart Home  
    This device could be used as IR receiver host. This modification: https://www.youtube.com/watch?v=KU0tDwtjfjw
    Helpful post? Buy me a coffee.
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