turn-a-fan-on-and-off-based-on-the-difference-between-a-humidity-sensor-and-a-baseline.yaml

# This is a fork of https://community.home-assistant.io/t/turn-a-fan-on-and-off-based-on-the-difference-between-a-humidity-sensor-and-a-baseline/255999

blueprint:
  name: Humidity Management (Fork)
  description: Turn a fan on and off based on the difference between a humidity sensor and a baseline
  domain: automation
  input:
    humidity_sensor:
        name: Humidity Sensor
        description: A sensor that measures the humidity of the area
        selector:
          entity:
            domain: sensor
    reference_humidity:
        name: Reference Humidity
        description: A percentage point value that indicates the baseline humidity if there is no reference sensor available
        default: 60
    reference_humidity_sensor:
        name: Reference Humidity Sensor
        description: A sensor that indicates the baseline humidity of the location
        selector:
          entity:
            domain: sensor
        default: []
    fan_switch:
        name: Fan Switch
        description: A switch that turns the fan on and off
        selector:
          entity:
            domain: switch
    rising_threshold:
        name: Rising Threshold
        description: How many percentage points above the reference humidity the sensor can rise before the fan is turned on
        selector:
          number:
            min: 0
            max: 100
        default: 8
    falling_threshold:
        name: Falling Threshold
        description: How many percentage points above the reference humidity the sensor must fall to before the fan is turned off
        selector:
          number:
            min: 0
            max: 100
        default: 3
    related_scripts:
      name: Related Scripts
      description: Scripts that will also manage this fan in single mode (with delay) to prevent this from running
      selector:
        target:
          entity:
            domain: script
trigger:
  - entity_id: !input humidity_sensor
    platform: state
  - entity_id: !input reference_humidity_sensor
    platform: state
condition:
  - condition: template
    value_template: '{{ mode != switch_state }}'
  - condition: state
    entity_id: !input related_scripts
    attribute: current
    state: "0"
action:
  - choose:
      - conditions:
          - condition: template
            value_template: "{{mode}} == 'on'"
        sequence:
          - service: switch.turn_on
            entity_id: !input fan_switch
      - conditions:
          - condition: template
            value_template: "{{mode}} == 'off'"
        sequence:
          - service: switch.turn_off
            entity_id: !input fan_switch
variables:
    reference_humidity: !input reference_humidity
    humidity_sensor: !input humidity_sensor
    reference_humidity_sensor: !input reference_humidity_sensor
    fan_switch: !input fan_switch
    switch_state: '{{ states(fan_switch) }}'
    rising_threshold: !input rising_threshold
    falling_threshold: !input falling_threshold
    difference: '{{ states(humidity_sensor)|float - (states(reference_humidity_sensor)|float
      or reference_humidity|float) }}'
    mode: '{% if switch_state == ''off'' and difference|float > rising_threshold|float %}on{%
      elif switch_state == ''on'' and difference|float > falling_threshold|float %}on{% else %}off{%
      endif %}'
mode: single