Tuya Water Leak Sensor 898FT Board WG-099-v5 - first images, work in progress

Tuya Water Leak Sensor 898FT
Board: WG-099-v5
Dates: 20230309 20231124
Other text: T=1.2 (?)
No further work done yet.

>>21140428

cool. Interesting to see another CB3S with M151-V1.1 on the back. I got a new device yesterday with the same but haven't found any record about what it means.

I also have 898FT from AliExpress, and was able to pull original firmware using the GUI flasher tool. I used the GUI tool to extract the config from the original firmware, but I am very new to OpenBK and not sure how to interpret these parameters.

The JSON config is:



And the text description is:



Most of my experience is with Tasmota. I'll try to figure out what I can with the Gui GPIO Doctor web app. I appreciate any guidance anyone can offer.

Can someone provide the firmware dump for this device I lost mine .

[AliExpress - 1005006455204862](https://vi.aliexpress.com/item/1005006455204862.html) €4.69
My USB to Serial (FTDI Clone) was defective(I discovered this much later) and the backup failed with a (RX buffer contains data error at)
after hours of struggles I decided to nuke the device (erasing flash) so I did not have a backup. I have however made some photos of the inside of the device:

Another thing to note is that the CEN pins (multiple?) CEN (chip enable) on pin 1 does not reset the MCU when pulled down, CEN on pin 3 works.