Last valid state value

Configuration
1

Hello,
I am struggling getting the last valid value from a sensor. What I mean is:

  • I’ve a sensor giving me the residual capacity of my printer toner
  • The sensor return: the value when printer is ON, unknown when is OFF
  • Then I would like to keep the last value got from the sensor when the printer is OFF

Do you have any suggestion?

Thanks in advance
Alessandro

2

Replace sensor.actual_toner_capacity with the name of your sensor (that reports residual toner capacity).

- platform: template
  sensors:
    toner_capacity:
      value_template: >-
        {% set tc = states('sensor.actual_toner_capacity') %}
        {{ tc if tc != 'unknown' else states('sensor.toner_capacity') }}
  • If the sensor reports a value that is not unknown, it becomes the new value for sensor.toner_capacity.
  • If the sensor reports a value that is unknown, then sensor.toner_capacity retains its existing value.
6 Likes
3

SOLVED! Thank You Taras
Alessandro

4

You’re welcome!

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