Can't get a value out of my sensor

Configuration
1

Hello…first post here.
Have been searching the forums for some time now and they have been a big help so far. Unfortunately I’m stuck where I can’t get a value to report on a device I have installed in my RV. I have successfully installed mqtt and can access my device. Here is the output:

Message 58 received on RVC/INVERTER_TEMPERATURE_STATUS/1 at 10:36 AM:

{
“data”: “01A026C028FFFFFF”,
“dgn”: “1FEBD”,
“fet temperature”: 36,
“fet temperature F”: 96.8,
“instance”: 1,
“name”: “INVERTER_TEMPERATURE_STATUS”,
“timestamp”: “1673796991.527135”,
“transformer temperature”: 53,
“transformer temperature F”: 127.4
}

QoS: 0 - Retain: false

My first goal was to report the " fet temperature F" in my home assistant as a sensor with a thermometer icon. Here is the code I used…

# Inverter
mqtt:
    sensor:
        name: "fet_temperature_F"
        state_topic: "RVC/INVERTER_TEMPERATURE_STATUS/1"
        value_template: '{{value_json.fet_temperature_F}}'
        device_class: temperature
        unit_of_measurement: '°F'
        icon: mdi:thermometer

Everything runs and it does show up in developer tools under state. The problem I have is there is no value being transferred. I’m new to JSON so I don’t know where my mis-step is.

Any help would be appreciated. Thanks

2 
# Inverter
mqtt:
    sensor:
        name: "fet_temperature_F"
        state_topic: "RVC/INVERTER_TEMPERATURE_STATUS/1"
        value_template: '{{value_json["fet temperature F"]}}'
        device_class: temperature
        unit_of_measurement: '°F'
        icon: mdi:thermometer

The key you want is named fet temperature F. It contains spaces not underscore characters. Because it contains spaces, we can’t reference it using dot notation and must use bracket notation.

3

Thank you. Your solution worked perfectly. Much appreciated!!!

1 Like
4

You’re welcome!

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5

Done…thanks again.