[BK7231N/CB2S] 3 channel relay switch module MINI-W1-3CH firmware change and teardown

A teardown of a new format of what I think is a common device. It is a 3-channel switch with BK7231N daughter card but installed at 90 degrees to the PCB (without a riser card). Loading of OpenBK was easy (even though it was my first time with this chipset) as I soldered headers to the daughter card pads and that's it.


To reset, just touch the CEN pad on the edge with a GND cable. It worked on the first try on all 3 devices I converted.

Thanks! Please post OBK JSON template (copy from the Web App) and Tuya Config, see tutorial:
https://www.youtube.com/watch?v=WunlqIMAdgw
Futhermore, on that kind of devices, please remember to use PowerSave 1. They have bad quality power supplies.

Here is the link I used
https://s.click.aliexpress.com/e/_EQ2uxgr
I do have the backup of the original but how can I upload it?
and here is the JSON template