bathroom fan control based on humidity.yaml

# Dumb way to control humidity in Bathroom using mechanical ventillation fan.
# It tries to be quiet and enable fan after people leave the room, except it is really necessary.
# Fan is usually turned on in periods when light is off.
# original version:
# https://github.com/KrzysztofHajdamowicz/home-assistant-blueprints/

blueprint:
  name: Humidity controller
  description: Turn on and turn off your fan according to humidity and (assumed) user presence.
  domain: automation
  source_url: https://github.com/KrzysztofHajdamowicz/home-assistant-blueprints/raw/main/humidity_controller.yaml
  input:
    humidity_sensor:
      name: Humidity sensor
      selector:
        entity:
          domain: sensor
          device_class: humidity
    light:
      name: Light (or light group) to influence turning on or off fan.
      selector:
        entity:
          domain: light
    fan:
      name: Fan to turn on or off depending on humidity sensor
      selector:
        entity:
          domain: switch
    high_humidity_level:
      name: High humidity level
      description: Turn on the fan, when humidity is above this value, but light is turned off.
      default: 60
      selector:
        number:
          min: 40
          max: 100
          unit_of_measurement: '%'
    low_humidity_level:
      name: Low humidity level
      description: Turn off the fan, when humidity is below this value.
      default: 55
      selector:
        number:
          min: 40
          max: 100
          unit_of_measurement: '%'
    extreme_humidity_level:
      name: Extreme humidity level
      description: Turn of the fan above this level and don't watch for light status!
      default: 70
      selector:
        number:
          min: 40
          max: 100
          unit_of_measurement: '%'

# If motion is detected within the delay,
# we restart the script.
mode: restart
max_exceeded: silent


trigger:
- platform: state
  entity_id: !input humidity_sensor
  id: humidity
- platform: state
  entity_id: !input light
  id: presence
condition: []
action:
- choose:
  - conditions:
    - condition: and
      conditions:
      - condition: state
        entity_id: !input light
        state: 'off'
      - condition: numeric_state
        entity_id: !input humidity_sensor
        above: !input high_humidity_level
    sequence:
    - service: switch.turn_on
      target:
        entity_id: !input fan
  - conditions:
    - condition: or
      conditions:
      - condition: state
        entity_id: !input light
        state: 'on'
      - condition: numeric_state
        entity_id: !input humidity_sensor
        below: !input low_humidity_level
    sequence:
    - service: switch.turn_off
      target:
        entity_id: !input fan
  - conditions:
    - condition: numeric_state
      entity_id: !input humidity_sensor
      above: !input extreme_humidity_level
    sequence:
    - service: switch.turn_on
      target:
        entity_id: !input fan
  default: []