Declining values extracted from each other

Configuration
1

Hi there

I have a command line that extracts a value that shows the content of wood pellets in my silo. This value is a declining number.

I would like to calculate the used wood pellets the last two days, with use of this number.
I know i have to save the value every midnight, and extract that somehow from the value from the day before, but honestly I do not know where to begin.
Please help to get me in the right direction.

2

integration sensor will tell you the wood pellet extraction rate per day. It won’t give you over the past 2 days though.

sensor:
  - platform: integration
    source: sensor.wood_pellet
    unit_time: d

It was built for ‘power consumption’ but you can use it for anything.

You can also use statistics for 2 days:

  - platform: statistics
    entity_id: sensor.wood_pellet
    max_age:
      days: 2

This will give you a min/max attribute and you’d just subtract one from the other in a template sensor.

1 Like