BSD48 CB2S BK7231N Sumart plug UK Tear Down
BSD48 CB2S BK7231N Sumart plug UK Tear Down
Contains two LEDs at the button (RED/BLUE) and has BL0937 Energy Monitoring Chip
My first attempt to open a such device was rough!
Flashing Setup:
1. 3.3V/GND direct to BL0937 chip
2. Since the TX/RX connections were facing inwards on the daughter board, getting two wires soldered was tough! What I did was hold a molten solder blob at the end of the wire and quickly place it as there was hardly any space for a soldering iron to do soldering.
This is how it looked through the small gap:
CEN was facing outside so no problem there,
Re-closed product looked horrible (not bad for my first attempt I suppose).
Configuration:
Contains two LEDs at the button (RED/BLUE) and has BL0937 Energy Monitoring Chip
My first attempt to open a such device was rough!
Flashing Setup:
1. 3.3V/GND direct to BL0937 chip
2. Since the TX/RX connections were facing inwards on the daughter board, getting two wires soldered was tough! What I did was hold a molten solder blob at the end of the wire and quickly place it as there was hardly any space for a soldering iron to do soldering.
This is how it looked through the small gap:
CEN was facing outside so no problem there,
Re-closed product looked horrible (not bad for my first attempt I suppose).
Configuration:
Comments
Remember to do a voltage/current/power calibration later. Just like in Tasmota, with "VoltageSet", "CurrentSet", "PowerSet" commands. Can you provide the IO configuration for relay, button and maybe... [Read more]
BTW, I have a confusion about where to find the command set which is relevant to the latest build. Is this the correct place? https://github.com/openshwprojects/OpenBK7231T_App/wiki/Console-Com... [Read more]
Hi, you could try applying some heat around the seal with a heat gun and gently lift it up with a thin knife. Might help with minimal damage teardown https://obrazki.elektroda.pl/7503813200_16... [Read more]
Thanks for the idea. Above was my first try :-) For a different plug I also tried a C-Clamp to gently push and loosen around the edges similar to what others have done using bench vise. After some... [Read more]
@jkwim we have a new command docs system, wait, I will make it public now, but basically, the autogenerated commands list are most up to date: https://github.com/openshwprojects/OpenBK7231T_App/tree/... [Read more]
Thank you! Does you code support MQTT subscription and MQTT Event Handling based on received payload, like Tasmota does? I would like to multipurpose the LED on a smart plug as an alarm indicator... [Read more]
You can send any command by MQTT. You can define an alias in the autoexec.bat, something like "alias mycmd1 backlog aaa; bbb; ccc;ddd". You can later send "mycmd1" through MQTT or through HTTP. You can... [Read more]
What I really need is to subscribe to a topic published by some other device. Then once the message gets forwarded to OpenBK device via MQTT broker, to act upon the payload via a script. Similar to... [Read more]
Has anyone successfully used the customer profile for this device with Tuya Cloud Cutter and got it to load OpenBeken? The Tuya Smart Life app reports the device native firmware to be: Main Module: V1.1.15... [Read more]
1.1.15 is on the "known patched" list so tuya cloudcutter is unlikely to work. For similar plugs I used the clamp method to break the glue, and flashed via serial. Another option is to buy new plugs... [Read more]
Getting a patched firmware is not really a problem. All soldering required for flashing is very easy when you know what you're doing. You can watch some of our flashing tutorials on Elektroda YT channel: https://www.youtube.com/@elektrodacom For... [Read more]
If you're unfortunate enough to get a Cozylife BSD48 with a 1mb BL602L10 DT-BL02 module, you can easily transplant a Beken CB2S or a WB2S into it or any of these other modules https://templates.blakadder.com/ESP-02S.html.... [Read more]