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[BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937)

nkuehnel86 1434 4
  • Hi Community,
    I would like to contribute my teardown to a power plug with energy monitoring.
    The power plug is from ANTELA and is called "ANTELA Smart Plug Model: F1s202-EU".
    I bought it on Amazon Germany Link.
    The Tuya module WB2S is used for this power plug, which is based on the BK7231T. The energy monitory IC is the known BL0937.

    The flashing was pretty easy since I could use "bk_writer1.60.exe" to get a backup of the original firmware and the same program to flash the firmware. Before writing the firmware "OpenBK7231T_UA_1.15.52.bin" I needed to erase the original one.

    But before flashing we need to open the device, which is to be hones not very easy and will not happen without any damage on the housing.
    With two small screwdrivers between the inlet and the housing we can manage this. Connect 3,3V, GND, TX1 and RX1 (see pictures) with your UART device of trust.

    [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937)

    Ones we flashed it, use the following config:
    [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937)



    In short:

    Brand: ANTELA
    Module: WB2S
    MCU: BK7231T
    Power monitoring IC: BL0937

    PWM4 = P24 = BL0937 SEL
    PWM1 = P7 = BL0937 CF
    PWM2 = P8 = BL0937 CF1
    RX = P10 = Button
    PWM5 = P26 = Relay
    PWM0 = P6 = LED (negated)

    @p.kaczmarek2, maybe you could add this to the database.

    Here some picture to compare and verify:

    [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937)
    [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937) [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937) [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937) [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937) [BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937)

    Cool? Ranking DIY
    About Author
    nkuehnel86
    Level 3  
    Offline 
    nkuehnel86 wrote 5 posts with rating 5, helped 0 times. Been with us since 2022 year.
  • #2
    Rysiek.K
    Level 14  
    Hello
    You got me interested in the article, but you didn't write the most important thing - What did you get or want to get by this flashing.
    - unless I didn't drink coffee today and I can't see with my eyes :-)
  • #3
    robig
    Level 21  
    Freeing yourself from the manufacturer's cloud, using e.g. Home Assistant or another system.
  • #4
    p.kaczmarek2
    Level 28  
    In fact, you don't even need a Home Assistant. OpenBeken can be scripted so that it is able to send GET requests between devices and operate based on simple events or timers (as well as triggering events, e.g. as a result of current or voltage measurement), as well as using compatibility with Tasmota Device Groups to combine OpenBeken and Tasmota devices into groups that more or less work together. Or use the Tasmota Control application (also works without HA and also with OpenBeken).

    But the fact, in general, HA is also very useful.
  • #5
    robig
    Level 21  
    And that is why I always read your studies with great interest ?
    p.kaczmarek2 wrote:
    In fact, you don't even need a Home Assistant. OpenBeken can be scripted so that it is able to send GET requests between devices and operate based on simple events or timers (as well as events can be triggered, e.g. as a result of current or voltage measurement), as well as compatibility with Tasmota Device Groups to combine OpenBeken and Tasmota devices into groups that more or less work together. Or use the Tasmota Control application (also works without HA and also with OpenBeken).

    But the fact, in general, HA is also very useful.