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LSPA9 socket with BL0937 and ZTZS module - how to connect the programmer?

Mad_Maxs 1725 12
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  • #1 20937583
    Mad_Maxs
    Level 11  

    Hello, I have a new socket marked LSPA9, with BL0937 for voltage measurement, but without any markings on the wifi module, except ZTZS (photos). I am looking for the Boot pin to connect the programmer (I marked the others, judge if they are correct).
    View of the Elivco LSPA9 socket, supporting Zigbee 3.0. Close-up of a PCB with labeled pins: RX, TX, GND, VCC, and 3.3V. Close-up of a circuit board with a module marked ZTZS and other electronic components. View of the inside of an electronic socket with visible module and component labels. Image of a circuit board with electronic components and labels against a world map background.

    I'm counting on you :)

    By the way, they are great to open with a vice :)
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  • #2 20938031
    p.kaczmarek2
    Moderator Smart Home  
    So the only thing left to do is either consider installing HA, for example on Raspberry, it will work quite well and not consume much power, or replace the Zigbee module with a WiFi module.
    Helpful post? Buy me a coffee.
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  • #3 20938825
    Mad_Maxs
    Level 11  

    I don't want another aggregator, so I'm replacing it with ESP. Thanks for the help :) I will report back whether the transplant was successful ;)
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  • #4 20969709
    Mad_Maxs
    Level 11  
    The ESP-02S module soldered in place of the one from Zigbee was successfully installed. After some thinking, measurements with a multimeter, etc., it turned out that even the voltage measurement works :) Here`s what it looks like:
    View of an ELIVCO smart plug against a map background. White smart plug with a visible power button on a dark background. Close-up of a circuit board with a visible integrated circuit and soldered components. ESP-02S module mounted on an electrical plug lying on a map mat. ESP-02S module soldered onto an electronic board. ESP-02S module soldered on a circuit board held in a hand. A person holding an ESP-02S module mounted on a PCB, with a multimeter probe touching components. ESP-02S module configuration interface in Tasmota software. Tasmota interface screen displaying data for the ESP-02S module.
  • #5 20990178
    p.kaczmarek2
    Moderator Smart Home  
    Good job. Don't forget to calibrate with VoltageSet/PowerSet/CurrentSet commands (like in OBK). I will close this topic for now.
    Helpful post? Buy me a coffee.
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Topic summary

The discussion revolves around connecting a programmer to an LSPA9 socket equipped with a BL0937 voltage measurement module and a ZTZS WiFi module. The user seeks guidance on identifying the Boot pin for programming. Responses suggest replacing the existing Zigbee module with an ESP-02S module instead of using another aggregator like Home Assistant on a Raspberry Pi. The user successfully installed the ESP-02S, confirming that voltage measurement functionality remains intact. Calibration using specific commands is recommended for optimal performance.
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