cadence based fan management

fan-cadence.yaml

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+blueprint:
+  name: Fan Cadence with Light Check
+  description: >
+    Runs a fan on a cadence every X minutes.
+    Turns it off after Y seconds unless any of the specified lights are on.
+  domain: automation
+  input:
+    fan_entity:
+      name: Fan Entity
+      selector:
+        entity:
+          domain: fan
+
+    interval_minutes:
+      name: Fan Activation Interval (minutes)
+      description: How often to turn the fan on
+      default: 15
+      selector:
+        number:
+          min: 1
+          max: 1440
+          unit_of_measurement: minutes
+
+    duration_seconds:
+      name: How Long to Keep Fan On (seconds)
+      description: How long the fan stays on before trying to turn it off
+      default: 60
+      selector:
+        number:
+          min: 5
+          max: 3600
+          unit_of_measurement: seconds
+
+    override_lights:
+      name: Override Lights
+      description: Fan will not be turned off if any of these lights are on
+      selector:
+        entity:
+          domain: light
+          multiple: true
+
+trigger:
+  - platform: time_pattern
+    minutes: "/{{ iif(interval_minutes | int > 0, interval_minutes, 15) }}"
+
+variables:
+  fan: !input fan_entity
+  lights: !input override_lights
+
+condition: []
+
+action:
+  - service: fan.turn_on
+    target:
+      entity_id: "{{ fan }}"
+  - delay:
+      seconds: !input duration_seconds
+  - condition: template
+    value_template: >
+      {{ lights | map('states') | select('eq', 'on') | list | length == 0 }}
+  - service: fan.turn_off
+    target:
+      entity_id: "{{ fan }}"
+
+mode: parallel