Configuration.yaml for rest platform

Configuration
1

I have a PicoW that reads temperature and humidity from a DHT22 sensor. Readings are then put into json format.

I can make Home Assistant get the readings via two sensors configured as follows:

sensor:

  • platform: rest
    name: Temperature
    scan_interval: 4
    resource: “http://172.16.0.69:80”
    value_template: “{{ value_json.temperature }}”
    unit_of_measurement: “℃”

  • platform: rest
    name: Humidity
    scan_interval: 4
    resource: “http://172.16.0.69:80”
    value_template: “{{ value_json.humidity }}”
    unit_of_measurement: “%”

My question is: is this the right way to do this please?

I notice that Home Assistant connects to the PicoW twice in quick succession, presumably because I have created two separate sensors. Is it possible to set this up in a more “elegant” way so Home Assistant only needs to connect once?

Any other improvements please?

Many thanks.

2

Please format your post correctly. See: How to help us help you - or How to ask a good question

3

If you use the restful integration rather than the rest sensor platform you can populate as many sensors as you want from the one call to the resource.

The docs have a poor example:

Each sensor can have a value template (like you have in your post).

EDIT: now that I my at my PC, here’s an example:

configuration.yaml (not sensors.yaml)

rest:
  - resource: "http://172.16.0.69:80"
    scan_interval: 4
    sensor:
      - name: Temperature
        value_template: "{{ value_json.temperature }}"
        unit_of_measurement: "℃"
      - name: Humidity
        value_template: "{{ value_json.humidity }}"
        unit_of_measurement: %"

This will populate both sensors with one call to the resource.

4

Apologies for not formatting the code correctly.

But many thanks to Tom_I: solution tested and confirmed as working exactly how I want.

Thanks again, much appreciated.

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