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T112_V1.1 RTL8710BN pin-compatible ESP replacements?

divadiow 1770 15
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  • #1 20835882
    divadiow
    Level 34  

    I have two Teckin SP23s. Does anyone know if the T112_V1.1 module is pin-compatible with any Espressif versions?

    Close-up of the T112_V1.1 module with visible integrated circuits. T112_V1.1 module with BoyaMicro chip on a white background.
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  • #2 20835952
    p.kaczmarek2
    Moderator Smart Home  
    Isn't it TYWE2S-compatible? So ESP-02S, etc?

    Btw, where did you get that modules? I need one to finish OBK port this platform.
    Helpful post? Buy me a coffee.
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  • #3 20836499
    ferbulous
    Level 18  
    Not exactly a drop in replacement for esp-02s (different pinout & slightly wider).
    Might need to solder some wires to it

    Added after 1 [hours] 26 [minutes]:

    p.kaczmarek2 wrote:
    Isn't it TYWE2S-compatible? So ESP-02S, etc?

    Btw, where did you get that modules? I need one to finish OBK port this platform.


    Will that include support for the the RTL8720C chip as well?
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  • #4 20836811
    divadiow
    Level 34  

    Sadly, not like-for-like. I've seen a couple of posts about Teckins with this board that mention TYWE2S.

    https://github.com/ct-Open-Source/tuya-convert/issues/269
    https://github.com/arendst/Tasmota/issues/6434

    Regarding sourcing the T112_V1.1 board, I only have them inside the Teckin SP23s I got off eBay last week. The picture of one unsoldered is from a forum post somewhere :)

    I'd love for you to be able to develop OBK to include the RTLs, I don't want to get into ESPHome. Can you source Teckin SP23s? Are you in the UK?
  • #5 20836819
    p.kaczmarek2
    Moderator Smart Home  
    I am in Poland, and I am not sure if I can order those devices. Futhermore, I would only need a WiFi module, I don't need whole device board.

    I had one about a year ago but it got accidentally bricked and that's why development of that branch stopped
    Helpful post? Buy me a coffee.
  • #6 20836858
    divadiow
    Level 34  
    I'd happily attempt to unsolder (I'm a novice!) a board and send it over...
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  • #7 20836864
    p.kaczmarek2
    Moderator Smart Home  
    That would be very helpful, have you watched our desoldering tutorials for CB2S and similiar modules? For instance here:


    Helpful post? Buy me a coffee.
  • #8 20836872
    divadiow
    Level 34  
    I have not. I will this evening!
  • Helpful post
    #9 20837051
    p.kaczmarek2
    Moderator Smart Home  
    You can see much more, including OBK and device flashing tutorials on our Elektroda channel:
    https://www.youtube.com/@elektrodacom
    Helpful post? Buy me a coffee.
  • #10 20838239
    divadiow
    Level 34  
    solder braid arriving today so hopefully unsoldered tonight
  • #11 20838328
    p.kaczmarek2
    Moderator Smart Home  
    Remember that flux is crucial for this process. Do not use too high soldering iron temperature and keep the tip clean.
    Helpful post? Buy me a coffee.
  • #12 20838460
    divadiow
    Level 34  

    Yes. I have had this pen for years but I think the gunky (rosin?) stuff seen in your videos would be better. CircuitWorks flux dispensing pen on a red background.
  • #13 20839635
    divadiow
    Level 34  

    It's out. Bit messy. Close-up image of a section of an electronic circuit on a printed circuit board with visible chips and connectors. Fragment of a blue circuit board with visible contacts and labels.

    DM me your address if still wanted.
  • #14 20840128
    p.kaczmarek2
    Moderator Smart Home  
    Well, I know how to regenerate a pad and only one is ripped so maybe that's not a lost case! I've send you a PM
    Helpful post? Buy me a coffee.
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Topic summary

The discussion centers on the T112_V1.1 module found in Teckin SP23 smart plugs and its compatibility with Espressif ESP modules. The T112_V1.1 is not a direct pin-compatible replacement for ESP-02S due to a different pinout and slightly larger size, requiring possible manual wiring adjustments. It is suggested that the module may be TYWE2S-compatible, but not exactly interchangeable. The T112_V1.1 board contains a Realtek RTL8710BN chip, with some references to RTL8195A and RTL8720C chips in related contexts. Users shared experiences with desoldering the module from the SP23 device, including tips on soldering techniques and flux usage. Firmware development efforts are ongoing, with OBK (OpenBeken) firmware support being explored for these Realtek-based modules. A preliminary OBK device template for a similar Realtek-based smart plug (T102_V1.1 with RTL8710B) was shared, indicating active development in this area. Resources such as GitHub issues and YouTube tutorials were referenced for further technical guidance.
Summary generated by the language model.
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