Isolating protocol 113 does not include EcoWitt WH40
imca-potato opened this issue · comments
Greetings!
I have been trying to decode with my Ecowitt WH40 sensor together with my Ambient Weather WH31 Temperature and Humidity sensor. I want to save on some computer resources, so I intend to isolate them using -R 113, which I assume will achieve the "saving computer resources" part. However, when I do that, the WH40 is not being decoded. It does get decoded if I remove the tag, however I would prefer to have it not decode all other signals (which I assume consumes resources). Can someone help clarify this to me?
Thank you for your help!
When you tried without tag but with -M protocol are both decoded as protocol 113 ?
What are your rtl_433 command arguments/options/tags ?
From the cu8 samples at rtl_433_tests/tests/EcoWitt-WH40, both sensors are properly decoded with the -R 113 argument.
Are both sensors on the same frequency range ? Test with -M level to get the frequency, then refine it with -f xxx.xxM
Notice that at 433.92M, the sample rate is by default 250kHz so the frequency range is narrower than at 868M/915M with a sample rate at 1000kHz. The reason why you may need to adjust the frequency if you're working around 433.92M, could be -f 433.6M or -f 434.2M for example or keep default frequency but increase the sample rate -s 1024k but this could have a computer performance impact.
The biggest resource savings are not to decode FSK frames (by only selecting OOK protocols). The WH40 uses FSK so you can't do that. But you can use -Y squelch to skip decoding all "quiet" frames.
As mentioned use -M level and -M noise -Y autolevel to watch signal levels.
Greetings!
When you tried without tag but with
-M protocolare both decoded as protocol 113 ?
I have tried decoding with the -M protocol tag and indeed both WH31E and WH40 are protocol 113.
What are your rtl_433 command arguments/options/tags ?
The entire command was rtl_433 -d "" -f 915M -s 1000k -M level -M protocol -R 113. I did forget to mention I was using the PlutoSDR, hence the -d "".
Are both sensors on the same frequency range ?
Yes, both are at 915 MHz.
But you can use -Y squelch to skip decoding all "quiet" frames.
Thank you for this, I will try it.
So far, I am using the command without the -R 113 tag, yet it does not decode the WH40 all the time. I've tried increasing the gain manually, even up to 60, yet no luck. I have yet to try it with an RTL-SDR, though. I am sure that the transmitter is working, as indicated by its blinking every time it transmits data.
Once again, thank you for the suggestions. I am still having trouble with WH40 but I will update this as soon as something good happens.
This was a question about how -R works, and that's been resolved.