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HELP with Setup AXUS WiFi Smart Switch Flashing Pinout and UART Connection Guide

shrek1802 456 10
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  • #1 21613939
    shrek1802
    Level 3  
    Hi there I am new here and want to learn more so I have a light switch that I purchased from AliExpress Called AXUS Wifi smart switch.

    It has the BK7231N

    Pin out for Flashing

    VCC - VCC
    Gnd - Ground
    25 RX - Uart TX
    26 TX - Uart RX

    I have dumped the firmware and attached it but it won't read the OBK what advice could u give me to find the pin outs to set it up properly please

    Thank you

    Black touch light switch panel with circular button in the center
    AXUS WiFi switch PCB marked WIFI-W6B in a wall-mount frame
    Close-up of AXUS smart switch PCB with visible pin labels and integrated circuits.
    Back of AXUS wall switch with labeled terminals L3, L2, L1, L, and N
    AI: Could you please share the exact model number of your AXUS WiFi smart switch, or maybe a link to the product page on AliExpress?
    https://a.aliexpress.com/_Eu6U1cS
    AI: What hardware and software are you using to try and flash the switch (like USB-to-serial adapter, flashing tool, baud rate), and are you getting any specific error messages when it won’t read the OBK?
    BK 7231 easy uart flasher
    Attachments:
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  • #3 21614306
    shrek1802
    Level 3  
    >>21614026 I've looked there already; there isn't anything
  • Helpful post
    #4 21614350
    divadiow
    Level 36  
    try
    Code: JSON
    Log in, to see the code
  • #5 21615145
    shrek1802
    Level 3  
    Everything works correctly apart from the relay as when turning the light on it makes a click and reboots
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  • Helpful post
    #6 21615163
    divadiow
    Level 36  
    hmm. this feels familiar but I can't find the post. It *may* have been change Btn_Tgl for TglChanOnTgl. I can't think of the reasoning for why though

    Added after 1 [minutes]:

    incorrect. found post. it was the other way round

    https://www.elektroda.com/rtvforum/topic4124971.html#21570110

    Code: Text
    Log in, to see the code
  • #7 21615203
    shrek1802
    Level 3  
    So what can I try next to fix this or do you think some of the pins are wrong?
  • Helpful post
    #8 21615227
    divadiow
    Level 36  
    not 100% sure. I have similar device but the working assignments are a bit different. try some of the dinput_x roles instead of Btn_Tgl? Might have to call on @p.kaczmarek2
  • #9 21615307
    shrek1802
    Level 3  
    ok mate and thank you for all the help
  • #10 21615366
    p.kaczmarek2
    Moderator Smart Home  
    shrek1802 wrote:
    Everything works correctly apart from the relay as when turning the light on it makes a click and reboots

    If relay works and clicks, but device reboots, then problem is in the power supply. Relay requires more power on toggle and power supply is not able to provide it. First enable PowerSave 1 on device and retry.

    I don't think that changing roles can help in this case, altough toggling on LED at the same time can also take some small extra current.
    Helpful post? Buy me a coffee.
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  • #11 21616021
    shrek1802
    Level 3  
    Right got the relay to work but when turning off the light it stays on ?

    Added after 49 [minutes]:

    "7": "WifiLED_n;0",

    Update if I don't use this pin the light does not stay on after being turned off
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Topic summary

The discussion concerns flashing and UART connection setup for an AXUS WiFi smart light switch based on the BK7231N chip. The user seeks guidance on correct pinouts for flashing: VCC to VCC, GND to Ground, GPIO25 as RX (UART TX), and GPIO26 as TX (UART RX). Despite dumping the firmware, the user cannot read the OBK firmware and requests advice on identifying proper pinouts and setup. A suggested approach is to consult the OpenBeken IoT device list for existing templates of similar or identical devices to facilitate flashing and configuration.
Summary generated by the language model.
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