First word using value_template {{value}}

Configuration
1

The UPS sends values like “180 Watt(40 %)” to an mqtt topic “daemon/ups/loads”. I want to use a value_template (doc) to parse out the first word, “180”, for an MQTT sensor (doc). This is what I’ve tried:

config.yaml:

mqtt:
  sensor:
    - name: "Bedroom UPS Load"
      unique_id: "bedroom_ups_load"
      state_topic: "daemon/ups/loads"
      value_template: "{{value.split(' ')[0]}}"
      unit_of_measurement: "W"
      device:
        name: "Bedroom UPS"
        identifiers: ["CP800AVRa"]
        manufacturer: "CyberPower"
        model: "CP800AVRa"

But in homeassistant, this gives a value of Unknown. I have also tried setting value_template to:

  • {{value.split()[0]}}
  • {{value.split[0]}}
  • {{value|split[0]}}
  • {% set words = value.split %}{{words[0]}}

But none of these work.

2

Template works for the input you’re claiming:

Screenshot_20241217-175330_Home Assistant
Screenshot_20241217-175330_Home Assistant1080×1988 160 KB

Please remove both the unit of measurement and the value_template lines, and then report back what its state is.

1 Like
3

Ugh, I was using the wrong MQTT topic. :person_facepalming:

1 Like