Help home assistant find my mqtt temperature sensor!

Configuration
1

I’ve got the following temperature sensor as a MQTT attribute on a motion sensor. The json looks like this:

3:{7 items
"attribute_type":string"String"
"current_value":string"82"
"description":string"MultiSensor_01_Temperature"
"id":int43
"setting_value":string"255"
"supports_read":booltrue
"supports_write":boolfalse
}

Currently my config.yaml looks like this:

mqtt:
  sensor:
    name: "Temperature Sensor"
    state_topic: "home/wink/7/status"
    json_attributes_topic: "home/wink/7/status/+"
    value_template: "{{ value_json.MultiSensor_01_Temperature}}"

Still nothing showing up in the UI or logs, or developer settings as issues.

I had read something about json_attributes, and that looked hopeful, but then read it’s been deprecated? I keep running over the same topics, but haven’t found anything yet.

TIA!

2

Post an actual example of a payload published to home/wink/7/status because what you posted appears to be the schema for the payload’s JSON structure (not an actual JSON payload).

3

Thanks for the reply!
This is what shows on MQTT Explorer for home/wink/7/status

{
  "Alarm_Notifications_On_Off": true,
  "BatteryLevel": 100,
  "MultiSensor_01_Temperature": "255",
  "On_Off": false
}

Not sure if it’s useful, but here’s the auto discovered motion detector on the same device:

{
  "uniq_id": "mqtt_switch.pir_sensor",
  "name": "Pir Sensor",
  "stat_t": "home/wink/7/status/switch/pir_sensor/state",
  "json_attr_t": "home/wink/7/status/switch/pir_sensor/attributes",
  "avty_t": "home/wink/7/status/switch/pir_sensor/availability",
  "pl_off": "off",
  "pl_on": "on",
  "cmd_t": "home/wink/7/status/switch/pir_sensor/set"
}
4

Searching around, I can’t find anyone that has gotten the temp sensor working via MQTT for this device. I’m a persistent fellow, so I’ll keep banging away at it for a while, but if anyone has a clue to throw at me, it would be welcome.

Thanks!

5

Your MQT Sensor configuration is missing an important hyphen after the sensor: key.

mqtt:
  sensor:
    - name: "Temperature Sensor"
      state_topic: "home/wink/7/status"
      json_attributes_topic: "home/wink/7/status/+"
      value_template: "{{ value_json.MultiSensor_01_Temperature}}"

NOTE

Based on the information in the auto-discovered motion detector, the value you entered for the temperature sensor’s json_attributes_topic isn’t correct.

1 Like
6

I doubt the state_topic is correct either to be honest. Given that the discovery for the PIR actually has

home/wink/7/status/switch/pir_sensor/state

I would expect it to be something more like:

home/wink/7/status/sensor/multisensor_01_temperature/state
1 Like
7

Thank you both for your help. Many of the previous configs elicited no errors or other log entries. The current one does and looks like this:

mqtt:
  sensor:
    -  name: "MultiSensor_01_Temperature"
       state_topic: "home/wink/7/status"
       unit_of_measurement: "F"
       json_attributes_topic: "/home/wink/7/status"
       value_template: "{{ value_json.multisensor_01_temperature }}"

The warning is:

WARNING (MainThread) [homeassistant.helpers.template] Template variable warning: 'dict object' has no attribute 'multisensor_01_temperature' when rendering '{{ value_json.multisensor_01_temperature }}'

I have tried a few combinations of state_topic and json_attributes_topic with no luck. Am I missing something obvious? Is there a recognized way to define the topics / templates? Looking about there seems to be a dizzying array of configs that don’t seem to provide any clue how to set mine.

I’ll keep banging away. Thanks!

8

The error message indicates that the payload received via home/wink/7/status doesn’t contain multisensor_01_temperature. That’s true.

Look closely at the sample payload you posted and the example I posted. Both reference MultiSensor_01_Temperature not multisensor_01_temperature.

Change the capitalization to match the example I posted.

9

As I have already stated - your state_topic should quite clearly be:

home/wink/7/status/sensor/multisensor_01_temperature/state
10

Ok. This is what I have now based on both of your recommendations:

mqtt:
  sensor:
    -  name: "MultiSensor_01_Temperature"
       state_topic: "home/wink/7/status/sensor/multisensor_01_temperature/state"
       unit_of_measurement: "F"
       json_attributes_topic: "home/wink/7/status"
       value_template: "{{ value_json.Multisensor_01_Temperature }}"

No errors in the logs, but also nothing shows on the UI.

I appreciate the help!