[BK7231T - WB2S] mERKURY WiFi power plug

Hello Community,
I would like to contribute my teardown of a power plug: Merkury MI-WW218-199WW


It uses a WB2S modul, which is based on the BK7231T.

Flashing was done after opening the plug with https://github.com/openshwprojects/OpenBK7231T_App. I used a raspberry pi with a serial adapter. Note: powering the plug needs 3.3 Volt, but the 3.3V output of the Pi is not sufficient. You have to use an external 3.3V power source.

Openning the device is pretty hard but cn be done with acutting around with a strong utility knife. Be carefull as it is easy to demage the pcb (like I did) and then extra soldering is needed.

Some internal pictures:


Settings in the app is pretty straight forward:
P6 Btn 1
P8 LED_n 1
P24 Rel 1

Good luck!