RTL-SDR Blog V3 on Home Assistant

Hardware
1

I have a RTL-SDR Blog V3 USB device and want to read temperature & humidity sensors from TFA Dostmann. I am running Home Assistant Yellow w/CM5 and have no idea how to make this device up and running.
I have installed Mosquitto broker, MQTT Explorer, rtl_433 and rtl_433 MQTT Auto Discovery plugins, configurations of these plugins untouched.

What else do I need to setup or install on HA to make this device to receive sensors on 868 MHz, please?

2

Before going deep in HAOS, did you confirm you receive the desired data through RTL_433 by other means?

If so, and assuming you read the documentation of the different components, what is holding you back, specifically?

3

I am not sure if I receive something, a rtl_433 log shows this:

[17:10:55] WARNING: rtl_433 now supports automatic configuration and multiple radios. The rtl_433_conf_file option is deprecated. See the documentation for migration instructions.

Starting rtl_433 -c /config/rtl_433/rtl_433.conf

rtl_433 version 23.11 branch at 202311281352 inputs file rtl_tcp RTL-SDR

New defaults active, use "-Y classic -s 250k" if you need the old defaults

Use "-F log" if you want any messages, warnings, and errors in the console.

Found Rafael Micro R820T/2 tuner

Allocating 15 zero-copy buffers

{"time" : "2025-01-23 17:20:55.072002", "enabled" : 16, "since" : "2025-01-23T17:10:55", "frames" : {"count" : 71, "fsk" : 189, "events" : 0}, "stats" : []}

{"time" : "2025-01-23 17:30:55.007643", "enabled" : 16, "since" : "2025-01-23T17:20:55", "frames" : {"count" : 88, "fsk" : 235, "events" : 0}, "stats" : []}

{"time" : "2025-01-23 17:40:55.071367", "enabled" : 16, "since" : "2025-01-23T17:30:55", "frames" : {"count" : 58, "fsk" : 182, "events" : 0}, "stats" : []}
4

Result from above post is after I’ve changed in /config/rtl_433/rtl_433.conf

frequency 868M
sample_rate 1024k

5

That doesn’t say the RTL SDR receives and understand your weather station.

Maybe add

analyze_pulses true

to see if it receives anything.

Then maybe google your way for that device.
If your main goal is to have that specific device integrated, it isn’t worth the hassle of doing the HA stuff if you cannot actually receive data.

6

No change. I don’t know why there is no sigrnal receiption at all. Maybe missing something in config file.