MQTT sensor not visible on Lovelace (Ard Nano IoT)

Configuration
1

Hello All,

Im completely new to HA but it seems all really cool. I have started a project with a Arduino Nano IoT with a temp and Hum sensor. I send these values by MQTT to HA. It al works if I use Node Red but I would like to use Lovelace cards. So I tried to find good info on this forum, nevertheless I can’t get it working.

As far as I understand I need to adjust the yaml config file, this is what I have done.

# Configure a default setup of Home Assistant (frontend, api, etc)
default_config:

# Text to speech
tts:
  - platform: google_translate

group: !include groups.yaml
automation: !include automations.yaml
script: !include scripts.yaml
scene: !include scenes.yaml


sensor:
  - platform: mqtt
    name: "Frog tank temperature"
    state_topic: "FrogTank/Temperature"
    unit_of_measurement: "°C"
    value_template: "{{ value_json.temperature }}"

No when I use a Gauge card and write as entity:

sensor.Frog_tank_temperature

It states that the entity is not available. I have restarted the broker (which runs on an RPI) allready. But I assume that the issue has to do with the config file or so This shouldn’t be so hard anymore. If it works on Node Red I should be able to get it work on Lovelace a well…I guess.

Could anybody point out to me what I may be doing wrong?

Thanks in advance

2

That should not be a capital F in Frog. Entity ids are always lower case.

3

Thanks Tom!

Ok i have changed it and rebooted the broker now I have the message:

Entity is nonnumeric: sensor.frog_tank_temperature

So probably something I still do wrong

4

Sorry there was another mistake. At the moment it shows me a value of 0. But in the debugger of Node Red I keep seeing the correct temperatures.

5

When you look in Developer Tools / States, what is the state of sensor.frog_tank_temperature ?

Click —> Open your Home Assistant instance and show your state developer tools.

6

I think nothing

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7

I have found the issue although I don’t know why it is as it is. I found on the yaml explanation an example where they did not use the comment:

value_template: "{{ value_json.temperature }}"

So I deleted this part of the code and now it is parsing the values correctly to my Gauge

Thanks for the help but case closed

8

That would be because your mqtt payload is not encoded as json.

9

Ahhhh clear well good lesson learned