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Identifying Chip in MOES WS-SR-EU-L Wi-Fi Switch for OpenBK7231T_App

viuvasas 555 11
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  • #1 21508644
    viuvasas
    Level 2  
    I bought MOES Wi-Fi light switch from AliExpress (https://aliexpress.com/item/1005008574435831.html). But I'm not sure what chip it has.
    Model: WS-SR-EU-L

    White, square light switch on a wooden surface. Moes smart switch with technical specifications. Printed circuit board with various components on a wooden surface. A printed circuit board with various electronic components. Close-up of an electronic module with visible PCBs and SMD components. Close-up of an electronic circuit with components on a printed circuit board.

    Can anyone please help me to identify chip? Is this chip supported by OpenBK7231T_App (https://github.com/openshwprojects/OpenBK7231T_App)
    I cannot find anything similar in the elektroda.com forum. Any help or link to any documentation or article will be helpful.
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  • #2 21508751
    divadiow
    Level 34  
    Can't say I recognise that module, nor can I find reference to it anywhere else. Are you able to spy anything beyond those capacitors?

    Circuit board with capacitors and integrated circuits
    Are you planning on removing the module for a better look?
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  • #3 21509162
    viuvasas
    Level 2  
    I unsoldered one capacitor.
    Close-up of a circuit board with an unsoldered capacitor.Close-up of a circuit board with visible capacitors and electronic components.
  • #4 21509177
    divadiow
    Level 34  
    Please remove the QR code sticker to reveal main chip
  • #5 21509254
    viuvasas
    Level 2  
    I removed the QR code sticker.
    Label with QR code and serial number on a light background.Close-up of a circuit board with capacitors and integrated circuits.Close-up of electronic components on a circuit board, including an electrolytic capacitor.Close-up of an electronic component on a circuit board, including a blue electrolytic capacitor.
  • #6 21509270
    divadiow
    Level 34  
    oh! I was expecting a proper MCU behind there. um.

    Added after 3 [minutes]:

    I'm confused. Where's the MCU? What's doing wifi and broadcasting for app pairing? Did you confirm it discoverable before taking it apart?
  • #7 21509286
    miegapele
    Level 15  
    Wifi chip is usually on the pcb which connects to that 8 pin header. Please show that one.
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  • #8 21509328
    viuvasas
    Level 2  
    Finally, I found a Wi-Fi chip. It is AXYU. As I understand, it is supported by OpenBK7231T_App?
    Disassembled wall module with AXYU Wi-Fi chip on a table.Close-up of a circuit board with a Wi-Fi module labeled AXYU.
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  • #10 21516490
    viuvasas
    Level 2  
    I have problems to back up the firmware using guide (https://www.elektroda.com/rtvforum/topic4111822.html). The 'download' step is success. However, during 'flash' step I'm getting error:

    RECV_RSP: recv magic is error!
    UP_FLASH: meet error when request the trunk 1, pos: (0x400, 0x400)
    read FLASH failed!

    I tried to set read length of 0x400000 and 0x200000. The same error.

    Screenshot of RDTool v1.0.21 software for software development.Screenshot of RDTool application version 1.0.21 showing a memory flashing interface.
  • #11 21516807
    divadiow
    Level 34  
    Not sure I've encountered this error before. Tried standard things like lowering baud? Are your wires short and soldered?
  • #12 21517418
    viuvasas
    Level 2  
    I attempted to re-solder the RX and TX wires, but ran into issues during the 'flash' step while trying to back up the firmware. So, I decided to skip the backup and proceed with flashing the OpenECR6600 firmware instead. The flashing was successful, and I was able to connect to the Wi-Fi network. Next, I'll work on configuring the pins.
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Topic summary

The discussion focuses on identifying the main chip used in the MOES WS-SR-EU-L Wi-Fi light switch purchased from AliExpress. Initial images showed only capacitors and an 8-pin header, with no visible MCU. After removing a QR code sticker, the main chip was revealed to be an AXYU ECR6600 Wi-Fi chip. This chip is confirmed to be supported by the OpenBK7231T_App firmware. Attempts to back up the original firmware using the recommended guide resulted in errors during the flash step, specifically "RECV_RSP: recv magic is error!" and "read FLASH failed." Troubleshooting included checking wiring and baud rate, but the issue persisted. Ultimately, the user skipped backing up the original firmware and successfully flashed the OpenECR6600 firmware, achieving Wi-Fi connectivity and planning to configure GPIO pins next.
Summary generated by the language model.
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