Tuya Water Sensor WiFi DY-SQ400B Flashing, Configuration for OBK Esphome/Tasmota style firmware

>>21380844
Yes, thank you! Moving to 1 line of DSTime works!

Added after 33 [minutes]:

A general question!
We use the DoorSensor, and logically, opening is an important event!
For a water leak sensor, on the contrary, closing is an important event.
A binary sensor is automatically published in the Home assistant mqtt discovery.

It would be more correct to change the water leak sensor.

And add the device class moisture.
I've set it up temporarily using MQTT Explorer.
Is there any way to configure this, in the configuration for automatic changes?

Do you have a final autoexec script?
- using the last ones sounds the alarm immediately
- STime or DSTime? or is this the same?
I'm sorry, I'm a beginner at openbeken.

>>21397272
STime does not exist (DSTime is correct)
My working autoexec.bat

hmm.
then the alarm sounds immediately, and can not be turned off.
the input is configured as doorsnsrwsleep_npup from the template.

>>21397367
As long as there is water, do not turn it off

There's no water.
With "old" autoexec alarm sounded when I connected the 2 pins. Now the alarm starts directly after boot
And sleep did never work.

florianreus wrote:

Now the alarm starts directly after boot

Flag 42 - off

thank you!

last problem - it is never entering sleep state. Any idea? anywhere I can debug?

>>21401601
Insert DSEdge 0 into autoexec.bat in 2 lines
DSEdge 0 was not activated in my configuration.
But after several flashbacks, it was activated.

and some trivial error - now I know I have to load the driver first.
This is my working autoexec:

>>21403880
DSEdge 0
The "startDriver DoorSensor" is not necessary, because it starts automatically during configuration pins "8": "DoorSnsrWSleep_nPup;0"

I'm quite sure pin 8 is configured. But without explicitly loading the driver I get "unknown command" for DSxx commands.

Thanks for the help, and maybe my settings help someone.

Does anyone have experience with a different power supply? I have some spare 3.6 - 3.7 volt batteries that I could use. Will they fit? Will the voltage not be too high for this device?

Does anyone have experience with different methods of powering this device? I have some spare rechargeable batteries (Li-Ion, Li-MH) 3.6-3.7V. Will it work, or will the voltage be too high?

You have a battery of 3 batteries connected in series. The minimum voltage is 3 V or 2.7 V when you charge this battery immediately. The maximum voltage of 3x1.54 V = 4.62 V can damage the circuits. You need to check what voltage they can be powered up to. A 2-battery battery may be a bit too low a voltage, as we have between 1.8 V and 3.08 V.

I powered my first device using a Li-ion battery directly. It's not working anymore, but did work some time. It might be because of the too high voltage.
My current device is powered with another 3.7 V battery, but I put in a Zener diode (I found in the house) in front so the voltage is limited to 3.3. This is working good.

LiFePO4 has a 3.65 V maximum. It does not need to be charged to the maximum voltage either. Discharge has to be finished at 2.5 V.
NiMH 2 pieces connected in series will simulate a CR123A cell quite well Link .

Thank you for your help, I will try with 2xNiMH to start with

Hello. Does anyone have a final autoexec.bat that is fully functional? I have a problem where my device cannot be awakened by high water after about 10 minutes. If someone has a completely working configuration, I would be grateful!

The latest working autoexec.bat is in thread #100

It still doesn’t work. Here is my import text:
{
"vendor": "Tuya",
"bDetailed": "0",
"name": "Floor sitting Water Leak Flood Sensor Alarm",
"model": "DY-SQ400B",
"chip": "BK7231N",
"board": "CB3S",
"flags": "8",
"keywords": [
"CR123A",
"battery",
"buzzer",
"detector"

],
"pins": {
"7": "PWM;5",
"8": "DoorSnsrWSleep_nPup;0",
"14": "BAT_Relay;1",
"23": "BAT_ADC;2",
"24": "Btn_ScriptOnly;1",
"26": "LED;5"
},
"command": "DSEdge 0",
"image": "https://obrazki.elektroda.pl/6240569600_1714757661.jpg",
"wiki": "https://www.elektroda.com/rtvforum/topic4052199.html"
}

Here is my autoexec.bat:
startDriver DoorSensor
DSTime 40 43200
DSEdge 2
Battery_Setup 2800 4100 1.94
Battery_cycle 20
delay_s 2
again:
delay_s 1
if $CH0==1 then DSTime clear
if $CH0==1 then setChannel 5 80
goto again

My device falls into such a deep sleep after a few minutes that not even high water can wake it up. I’m wondering if the issue could be with the flags. What flags should I have? Thanks!