Feature Request: Sensor to display water consumed during this watering session

[peter-dolkens]

The device itself returns the total water delivered - would be nice to have a sensor which also shows how much water was delivered during the current/last watering session.

This is useful when manually controlling the valve to know how much water you have delivered.

I currently achieve this as follows:

input_text:
  wfc01_last_water_delivered:
    name: "WFC01 Last Water Delivered"
    unit_of_measurement: "L"
    icon: "mdi:water-outline"

template:
  - sensor:
      - name: "WFC01 Water Delivered"
        icon: "mdi:water-outline"
        unit_of_measurement: "L"
        unique_id: wfc01_water_delivered
        state: "{{ (states('sensor.wfc01_water_total') | float - states('input_text.wfc01_last_water_delivered') | float) | round(2) }}"

automation:
  - alias: "WFC01 Update Last Water Delivered"
    trigger:
      - platform: state
        entity_id: binary_sensor.wfc01_water_on
        to: "on"
    action:
      - service: input_text.set_value
        data:
          entity_id: input_text.wfc01_last_water_delivered
          value: "{{ states('sensor.wfc01_water_total') }}"

[Bwooce]

Sure, will add. I need to finish this off properly.