A Home Assistant blueprint to automatically turn a fan on and off upon motion

automatic-fan-with-motion.yaml

blueprint:
  name: Motion-activated Fan
  description: A Home Assistant blueprint to automatically turn a fan on and off upon motion
  domain: automation
  input:
    motion_entity:
      name: Motion Sensor
      selector:
        entity:
    fan_target:
      name: Fan
      selector:
        target:
          entity:
            domain: switch
    minimum_motion_duration:
      name: Minimum motion duration
      description: Number of seconds the motion needs to last for the fan to turn on
      default: 10
      selector:
        number:
          min: 0
          max: 600
          unit_of_measurement: seconds
    no_motion_wait:
      name: Wait time
      description: Time to leave the fan on after last motion is detected.
      default: 120
      selector:
        number:
          min: 0
          max: 3600
          unit_of_measurement: seconds

mode: restart
max_exceeded: silent

trigger:
  platform: state
  entity_id: !input motion_entity
  from: "off"
  to: "on"
  for:
    seconds: !input minimum_motion_duration

action:
  - service: switch.turn_on
    target: !input fan_target
  - wait_for_trigger:
      platform: state
      entity_id: !input motion_entity
      from: "on"
      to: "off"
  - delay: !input no_motion_wait
  - service: switch.turn_off
    target: !input fan_target