Support for Bresser soil moisture sensor?

[kami83]

Hi,

i would like to ask, if someone can tell me if he can decode this Bresser Sensor:

https://www.bresser.de/en/Weather-Time/BRESSER-Soil-Sensor-for-7510100-7510200-Smart-Garden-Smart-Home-Irrigation-System.html

Its nearly the same then the RainPoint Soil Sensor.

Can someone help me with this?

BR kami

[zuckschwerdt]

Do you already own the sensor? Otherwise if you are deciding to buy or not: Newer Bresser protocols all show roughly the same structure and it shouldn't be a problem to analyze and add more.

[kami83]

Yes i bought it.do you think it is 868 or 433?

[zuckschwerdt]

Newer sensors are FSK, and FSK is likely to be on 868. I only have older 433 (OOK) sensors.

[ProfBoc75]

Hi, it's 433.92 Mhz, page 24 : User Guide

[kami83]

Ohh thats good. I should be nearly the same sensor then this:

#1781

Can someone help me to write a decoder for this?

Thx a lot.

BR kami

[zuckschwerdt]

Get a good sample to find and verify timings. https://triq.org/rtl_433/ANALYZE.html
Then we'll need to get a number of codes and check those.
Writing (or modifying) a decoder is easy then ;)

[kami83]

Hmm okay i will try. But it is not so easy to get a sample. There are just to much other different messages.

i will try.

BR kami

[zuckschwerdt]

It usually helps to remove the antenna and place the device and receiver at maybe 20cm to each other.

[ProfBoc75]

May I propose to run rtl_433 in verbose mode for only the existing Bresser decoders to speed up the analysis.

rtl_433 -R 52:vv -R 119:vv -R 172:vv -R 173:vv -R 247:vv -R 249:vv -M protocol -M level

If we are lucky, you may have some message that could help us to focus on a specific decoder.

Notice that, except model 52, all are based on FSK PCM with s = l = 124 µs , preamble=0xaa2dd4, so a flex decoder like this one could help also (my assumption that this soil sensor uses the same rf coding) :

rtl_433 -X "n=Bresser_soil,m=FSK_PCM,s=124,l=124,r=25000,preamble=aa2dd4"

[kami83]

Hi, first of all, thanks a lot for the good and fast help. But i think my sensor is broken and i think i will get a new one next week. So until i recieved the new one i have to wait.

BR kami