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Cronos WK3O with ESP02S does not respond to control - no communication with module

ZgredekLCD 285 0
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  • #1 20996064
    ZgredekLCD
    Level 8  
    Hey,
    Below is a plate from Cronos WK3O.

    Close-up of an electronic board with various components, including a relay, capacitors, and wires. Electronic circuit board with various components, including EEPROM 24C02N.
    I have a problem with a device that had a WBR2 from Tuya. I soldered on an ESP02S and threw myself a Supla, for testing, however, zero response. The physical button works, the LED lights up, the relay can be heard, however I cannot override it programmatically.
    According to my findings, the button (when pressed) short-circuits to GND which makes the relay switch on. What is this module? I can't find info about it anywhere:
    Close-up of a circuit board with integrated circuits and a button.

    Is it the WBR2 communicating with it and after switching to ESP02S it stopped communicating? According to another post on the electrode it is possible to swap this WBR2. Where could the problem be



    Added after 3 [hours] 41 [minutes]:



    It gets more interesting in the top left corner, under the relay is 24C02N - which is the EEPROM. I guess this is more advanced than the standard switch from WBR2.


    Added after 1 [hour] 18 [minutes]:


    If anyone is interested, I measured some components for myself - it's possible I made a mistake somewhere, I have no experience yet. If there is an EEPROM + some controller from ST then I guess it will be a problem to handle it after ESP?
    Close-up of two electronic boards with wires and components, including a relay and EEPROM. .
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