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SRNE Solar Inverter WiFi Dongle Microcontroller Identification

bigote 90 0
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  • #1 21775427
    bigote
    Level 10  
    Hi everybody, I just got myself a solar inverter. It is an SRNE Hyp model rebranded ECO WORTHY. Anyway, it came with a WiFi dongle to connect to Internet for monitoring purposes, but it was too slow and cumbersome to use.
    So I decided to take it apart and find which microcontroller it was using (hoping for ESP32), but to my bad luck, the label on the IC was erased, so I've been unable to identify it. There is a serial interface on it, but nothing is printed out. I tried all baud rates from 9,600–115,200 baud and nothing comes out.
    Here are some pics of it, maybe somebody out there has been on this road before and can point me in the right direction.
    Thanks in advance...


    Close-up of green PCB with integrated circuit and 26.000 MHz quartz crystal
    Electronic module with coaxial antenna connector on a workbench
    Black plastic airflow sensor with a QR code label on a dirty metal work surface
    PCB with electronic components, including capacitors and an RF connector
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