Mqtt sensor from two differenct devices

Configuration
1

Folks,
i am sniffering with a RTL433 different devices and sending them via MQTT but all on the same topic RTL_433/JSON.
I am trying to create two sensor for two different humidities.
One:
{“time” : “2019-12-23 00:54:52”, “model” : “Prologue sensor”, “id” : 5, “rid” : 67, “channel” : 1, “battery” : “OK”, “button” : 0, “temperature_C” : 12.900, “humidity” : 23}

second:
{“time” : “2019-12-23 00:55:24”, “model” : “Fine Offset Electronics WH1080/WH3080 Weather Station”, “msg_type” : 0, “id” : 101, “temperature_C” : 5.600, “humidity” : 76, “direction_deg” : 90, “speed” : 7.344, “gust” : 8.568, “rain” : 404.700, “battery” : “OK”, “mic” : “CRC”}

what makes the sender unique is the “model” : “Fine Offset Electronics WH1080/WH3080 Weather Station” and “model” : “Prologue sensor”.
well to be specific I do get values from three different sensors from the “model” : “Prologue sensor” where the differentiation will be the “channel” : 1

When I run in config.yaml

   - platform: mqtt
    name: "Wetterstation Humidity"
    state_topic: "RTL_433/JSON"
    unit_of_measurement: '%'
    value_template: "{{ value_json.humidity }}"
    availability_topic: "RTL_433/JSON"

How can I ensure to get it from the weather station as there are many humidity values on the same topic?

2

I noticed both of the examples you posted contain an id key. The Prologue sensor’s id is 5 and the Weather Station’s id is 101. Can the id be used to uniquely identify these two devices?

3

Here’s a topic with different solutions for this.

Be aware that the id can change on some devices when the battery is changed.
I’ve created input_numbers to change them without restarts.

4

Why are you sending them all on the same topic?

5

That’s how rtl_433 does it.

6

I see that rtl_433 supports discovery.

7

see here:-

8

If you’re comfortable with using id then you can use a solution I posted to a similar question:

It uses the approach of separating the multiplexed payload into separate topics, one per unique sensor. This allows you to easily define multiple sensors (without using complex templates in each sensor).

9

you are right. Good question. I have now added the https://github.com/roflmao/rtl2mqtt and do get for every attribute a topic. Helps a lot