Create sensor that triggers once counter increments

Configuration
1

Hi,

I’ve got a sensor that counts the number of people who are home.

 people_at_home:
   entity_id:
     - person.john_doe
     - person.jane_doe
     - person.fred_doe
   friendly_name: "How many people are at home?"
   value_template: >-
     {{ states.person | selectattr('state', 'eq', 'home') | list | count | int }}

Now I would like to trigger a sensor if the number increases only (no decrease). I’m happy for this sensor to be as simple as True/False.

Any ideas how I can do this.?

1 Like
2
3

Do you really want a [binary_]sensor that is true if the value of sensor.people_at_home increases? Or are you just thinking of using that to trigger an automation?

FWIW, I also have a sensor that indicates the number of people that are home, and I use it directly in two automations, one that changes my “home mode” input_select to Away:

  - alias: Home Mode - Leaving
    trigger:
      platform: numeric_state
      entity_id: sensor.n_people_home
      below: 1
    condition:
      condition: state
      entity_id: input_select.home_mode
      state: Home
    action:
      service: input_select.select_option
      entity_id: input_select.home_mode
      data:
        option: Away

and another that changes it to Home:

  - alias: Home Mode - Arriving
    trigger:
      platform: state
      entity_id: sensor.n_people_home
    condition:
      condition: template
      value_template: >
        {{ trigger.to_state.state|int > trigger.from_state.state|int }}
    action:
      service: input_select.select_option
      entity_id: input_select.home_mode
      data:
        option: Home

BTW, the reason for the condition in the first automation is that input_select.home_mode has more options than Home & Away, and I only want to change it to Away if it is currently Home.

4

Thanks, that is exactly what I want!!! It works well.

1 Like