logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details

ststefanov 3492 12
ADVERTISEMENT
Reply Cool? Ranking DIY | New topic
Notify about new articles
  • Bought from here:
    Link
    Page screenshot:
    Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details
    Package contains strange circuit breaker, without automatic magnetic field coil trip mechanics. It seems to explore 8 bit MCU + bistable relay for trip. Main module is PFS-B containing ESP8285 CPU. Although there is powerfull 32 bit CPU there is additional 8 bit micro controller SC92F7351. I think this is to provide high reliability.
    Energy meter is CSE7759. All this is packed in 1 unit 19 mm DIN package.
    More details I'll post later when I manage to discover circuitry.
    Here are the images:
    Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details

    Cool? Ranking DIY
    About Author
    ststefanov
    Level 9  
    Offline 
    ststefanov wrote 15 posts with rating 6. Been with us since 2014 year.
  • ADVERTISEMENT
  • #2 20529044
    p.kaczmarek2
    Moderator Smart Home  
    Thank you, that's a very interesting teardown. I haven't been aware about the PSF-B module, but luckily pinout is already known:
    Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details
    Right now I will add that this is most likely a TuyaMCU device. I would suggest doing a UART packet capture from RX/TX lines, but of course this has to be done with device disconnected from mains and powered in some kind of safe manner...
    Helpful post? Buy me a coffee.
  • ADVERTISEMENT
  • #3 20534897
    vasara2008
    Level 5  
    hello,

    anybody can identify transistors matrix in sot23-6 package, near relay socket, after some tests i have dead this transistor.

    thanks in advance
    Gintas
  • ADVERTISEMENT
  • #5 20536253
    vasara2008
    Level 5  
    Thank you, my friend.
  • #6 21158268
    civic9
    Level 12  
    Hi,
    Can I flash it with Tasmota or other open-source software?
    Do I need to disable that TuyaMCU to flash PSF-B? How?
    Does anyone have a working configuration?
    Please give me any tips and hints about this device :)

    Thank you.

    Update:
    I managed to flash Tasmota.
    I just had to break CSE7759B connection to RX.
    Looks like it's working.
    Config: GPIO0 - Button 1, GPIO3 - CSE7766 Rx, GPIO12 - Relay 1, GPIO13 - LedLink

    Looks like SC92F7351 is controling relay and second red led, but it is connected directly to gpio12 of esp8255. No TuyaMcu protocol.
  • #7 21177522
    p.kaczmarek2
    Moderator Smart Home  
    Yes, Tasmota is a good choice for ESP-based devices.
    You can also use online Tasmota installer, as described here: https://www.elektroda.com/rtvforum/topic3990951.html
    Helpful post? Buy me a coffee.
  • ADVERTISEMENT
  • #8 21202346
    jkwim
    Level 12  
    civic9 wrote:
    Hi,
    Can I flash it with Tasmota or other open-source software?
    Do I need to disable that TuyaMCU to flash PSF-B? How?
    Does anyone have a working configuration?
    Please give me any tips and hints about this device :)

    Thank you.

    Update:
    I managed to flash Tasmota.
    I just had to break CSE7759B connection to RX.
    Looks like it's working.
    Config: GPIO0 - Button 1, GPIO3 - CSE7766 Rx, GPIO12 - Relay 1, GPIO13 - LedLink

    Looks like SC92F7351 is controling relay and second red led, but it is connected directly to gpio12 of esp8255. No TuyaMcu protocol.


    What are the counter values displayed in Tasmota?

    Could you post some screenshots/logs please?
  • #10 21202806
    jkwim
    Level 12  
    Thanks.

    I am also interested in the device because of the form factor.

    Was the opening of the device destructive?
  • #11 21202812
    p.kaczmarek2
    Moderator Smart Home  
    I've did a more detailed teardown of a similiar (same factor) device once, also on ESP, but you will need to use google translate:
    Przekaźnik Tuya/Smart który pamięta harmonogram po utracie sieci WiFi
    Helpful post? Buy me a coffee.
  • #12 21203119
    jkwim
    Level 12  
    Found this youtube video:

    https://www.youtube.com/watch?v=jrmQpzMRU6o

    Added after 19 [minutes]:

    p.kaczmarek2 wrote:
    I've did a more detailed teardown of a similiar (same factor) device once, also on ESP, but you will need to use google translate:
    Przekaźnik Tuya/Smart który pamięta harmonogram po utracie sieci WiFi


    Thanks.

    Actually what I need is a ESP device in the switchboard to connect to few ModBus devices like these:

    Unique WiFi DIN Mount Circuit Breaker with ESP8285, SC92F7351 & CSE7759: In-Depth Details

    Need to figure out how safe it will be to hookup one GPIO Port for connectivity with the ModBus device. ModBus devices can be cascaded and connected to a single GPIO.
  • #13 21203305
    civic9
    Level 12  
    >>21202806
    jkwim wrote:
    Was the opening of the device destructive?

    Rivets are used to hold two parts of an enclosure together. So dissasembling it is somewhat destructive. However, rivets can be drilled out quite easily and you can replace them with small screws afterward.

    I am not sure if it is safe to use a GPIO directly (without some form of extra separation) with another external device.
Reply Cool? Ranking DIY | New topic
Notify about new articles
Report a violation of the law

Topic summary

The discussion revolves around a unique WiFi DIN mount circuit breaker featuring an ESP8285 microcontroller, an SC92F7351 8-bit MCU, and a CSE7759 energy meter. Users express interest in the device's teardown, functionality, and potential for flashing with open-source firmware like Tasmota. Key points include the identification of a BL8023F relay driver, the need to disconnect the CSE7759B for successful flashing, and the device's form factor. Concerns about the safety of using GPIO ports for ModBus connectivity and the destructive nature of disassembly due to rivets are also addressed. Users share resources, including pinout diagrams and a YouTube video for further insights.
Summary generated by the language model.
Popular Topics
ADVERTISEMENT