Home Assistant Blueprint: Smart Lux Dimmer (BASIC)

smart_lux_dimmer_basic.yaml

blueprint:
  name: Smart Lux Dimmer (BASIC)
  description: |
    Version 2.0
    Dim or turn off light based on the value of a light sensor
  source_url: https://gist.github.com/Twanne/b942a7885e5a062dc9b6acfe9d6fe3db
  domain: automation
  input:
    schedule_start:
      name: Schedule start time
      description: Automation only runs after this time.
      selector:
        time:

    schedule_stop:
      name: Schedule stop time
      description: Automation does not run after this time.
      selector:
        time:

    schedule_days:
      name: Run on these days
      description: |
        Days on which the automation will run.
        Write days in short form, seperated by punctuation marks and/or spaces.
        (i.e.: mon, tue, wed,...)
      selector:
        text:

    light_sensor_entity:
      name: Light Sensor
      selector:
        entity:
          domain: sensor
          device_class: illuminance

    max_brightness_value:
      name: Maximum ambient light value
      description: Light is turned off above this value.
      default: 500
      selector:
        number:
          min: 0
          max: 1000
          step: 10
          unit_of_measurement: lx
          mode: slider

    min_brightness_value:
      name: Minimum ambient light value
      description: The light does not change brightness further under this value.
      default: 0
      selector:
        number:
          min: 0
          max: 1000
          step: 10
          unit_of_measurement: lx
          mode: slider

    light_value_1:
      name: Dimming value 1
      description: Brightness of the light at maximum ambient light.
      default: 0
      selector:
        number:
          min: 0
          max: 100
          step: 1
          mode: slider
          unit_of_measurement: '%'

    light_value_2:
      name: Dimming value 2
      description: Brightness of the light at minimum ambient light.
      default: 100
      selector:
        number:
          min: 0
          max: 100
          step: 1
          mode: slider
          unit_of_measurement: '%'

    target_light:
      name: Target lights
      selector:
        target:
          entity:
            domain: light

mode: single

variables:
  light_sensor: !input light_sensor_entity
  maxB: !input max_brightness_value
  minB: !input min_brightness_value
  light1: !input light_value_1
  light2: !input light_value_2
  slope: "{{ ( light1 - light2 ) / ( maxB - minB ) }}"
  constant: "{{ light1 - ( slope * maxB ) }}"
  days: !input schedule_days

trigger:
  platform: state
  entity_id: !input light_sensor_entity

condition:
  - condition: numeric_state
    entity_id: !input light_sensor_entity
    above: !input min_brightness_value

  - condition: time
    after: !input schedule_start
    before: !input schedule_stop

  - condition: template
    value_template: "{{ now().strftime('%a') | lower in days }}"

action:
  - service: light.turn_on
    data:
      brightness_pct: >
        {% if states(light_sensor)|int > maxB %}
          0
        {% else %}
          {{ (( slope * states(light_sensor)|int ) + constant)|round }}
        {% endif %}

    target: !input target_light