Gnzlt · September 17, 2025 07:32
diff --git a/dynamic-light.yaml b/dynamic-light.yaml
 blueprint:
  name: "Dynamic Light Brightness (Lux Based)"
  description: >
    This blueprint dynamically adjusts a light's brightness to complement the ambient light levels detected by an illuminance (lux) sensor.

    It maps a defined range of lux values (from a minimum to a maximum) to a corresponding brightness range (e.g., 10 lux → 10% brightness, 500 lux → 100% brightness). The brightness is calculated using linear interpolation, ensuring smooth transitions as the ambient light changes.

    The automation is only active when the target light is already turned on.

    **Key Features:**
    - **Lux & Brightness Ranges:** Set minimum and maximum thresholds for both the lux sensor and the light's brightness percentage.
    - **Dynamic Threshold:** The maximum lux threshold can be set with a static value or linked to an `input_number` helper for dynamic adjustments via your dashboard.
  domain: automation
  input:
    target_light:
      name: "Light to Control *"
      description: "The light entity that will be controlled. The automation only runs if this light is ON."
      selector:
        entity:
          domain: light

    lux_sensor:
      name: "Illuminance (Lux) Sensor *"
      description: "The sensor that measures ambient light in lux."
      selector:
        entity:
          domain: sensor
          device_class: illuminance
      
    max_lux_static:
      name: "Maximum Lux Value (Static)"
      description: "Use this if NOT using an Input Number. When lux is at/above this value, the light is at max brightness."
      default: 500
      selector:
        number:
          min: 10
          max: 2000
          step: 10
          unit_of_measurement: lux
      
    max_lux_entity:
      name: "Maximum Lux Value (from Helper)"
      description: "(Optional) Use an Input Number helper to set the maximum lux value dynamically. This overrides the static value above."
      default:
      selector:
        entity:
          domain: input_number

    min_lux:
      name: "Minimum Lux Value"
      description: "When the lux level is AT or BELOW this value, the light will be at its minimum brightness."
      default: 50
      selector:
        number:
          min: 0
          max: 1000
          step: 10
          unit_of_measurement: lux

    max_brightness:
      name: "Maximum Brightness"
      description: "The brightness of the light when the lux level is at its maximum."
      default: 100
      selector:
        number:
          min: 1
          max: 100
          mode: slider
          step: 1
          unit_of_measurement: '%'

    min_brightness:
      name: "Minimum Brightness"
      description: "The brightness of the light when the lux level is at its minimum."
      default: 1
      selector:
        number:
          min: 1
          max: 100
          mode: slider
          step: 1
          unit_of_measurement: '%'

 mode: single
 max_exceeded: silent

 variables:
  lux_sensor: !input lux_sensor
  max_lux_static: !input max_lux_static
  max_lux_entity: !input max_lux_entity
  min_lux: !input min_lux
  max_brightness: !input max_brightness
  min_brightness: !input min_brightness

  max_lux: >
    {% if max_lux_entity is not none and max_lux_entity != '' %}
      {{ states(max_lux_entity) | float(500) }}
    {% else %}
      {{ max_lux_static }}
    {% endif %}

  target_brightness: >
    {% set lux = states(lux_sensor) | float(0) %}
    
    {# Calculate brightness using linear interpolation #}
    {% set brightness = min_brightness + (lux - min_lux) * (max_brightness - min_brightness) / (max_lux - min_lux) %}
    
    {# Clamp the result between min/max brightness and round it #}
    {{ [min_brightness, brightness, max_brightness] | sort | median | round(0) }}

 trigger:
  - platform: state
    entity_id: !input lux_sensor
  - platform: state
    entity_id: !input max_lux_entity
  - platform: state
    entity_id: !input target_light
    from: 'off'
    to: 'on'

 condition:
  - condition: state
    entity_id: !input target_light
    state: 'on'
  - condition: template
    value_template: "{{ states(lux_sensor) not in ['unknown', 'unavailable'] and states(lux_sensor) | is_number }}"
  - condition: template
    value_template: "{{ max_lux > min_lux }}"

 action:
  - service: light.turn_on
    target:
      entity_id: !input target_light
    data:
      brightness_pct: "{{ target_brightness }}"
      transition: 1
	blueprint:
	name: "Dynamic Light Brightness (Lux Based)"
	description: >
	This blueprint dynamically adjusts a light's brightness to complement the ambient light levels detected by an illuminance (lux) sensor.

	It maps a defined range of lux values (from a minimum to a maximum) to a corresponding brightness range (e.g., 10 lux → 10% brightness, 500 lux → 100% brightness). The brightness is calculated using linear interpolation, ensuring smooth transitions as the ambient light changes.

	The automation is only active when the target light is already turned on.

	Key Features:
	- Lux & Brightness Ranges: Set minimum and maximum thresholds for both the lux sensor and the light's brightness percentage.
	- Dynamic Threshold: The maximum lux threshold can be set with a static value or linked to an `input_number` helper for dynamic adjustments via your dashboard.
	domain: automation
	input:
	target_light:
	name: "Light to Control *"
	description: "The light entity that will be controlled. The automation only runs if this light is ON."
	selector:
	entity:
	domain: light

	lux_sensor:
	name: "Illuminance (Lux) Sensor *"
	description: "The sensor that measures ambient light in lux."
	selector:
	entity:
	domain: sensor
	device_class: illuminance

	max_lux_static:
	name: "Maximum Lux Value (Static)"
	description: "Use this if NOT using an Input Number. When lux is at/above this value, the light is at max brightness."
	default: 500
	selector:
	number:
	min: 10
	max: 2000
	step: 10
	unit_of_measurement: lux

	max_lux_entity:
	name: "Maximum Lux Value (from Helper)"
	description: "(Optional) Use an Input Number helper to set the maximum lux value dynamically. This overrides the static value above."
	default:
	selector:
	entity:
	domain: input_number

	min_lux:
	name: "Minimum Lux Value"
	description: "When the lux level is AT or BELOW this value, the light will be at its minimum brightness."
	default: 50
	selector:
	number:
	min: 0
	max: 1000
	step: 10
	unit_of_measurement: lux

	max_brightness:
	name: "Maximum Brightness"
	description: "The brightness of the light when the lux level is at its maximum."
	default: 100
	selector:
	number:
	min: 1
	max: 100
	mode: slider
	step: 1
	unit_of_measurement: '%'

	min_brightness:
	name: "Minimum Brightness"
	description: "The brightness of the light when the lux level is at its minimum."
	default: 1
	selector:
	number:
	min: 1
	max: 100
	mode: slider
	step: 1
	unit_of_measurement: '%'

	mode: single
	max_exceeded: silent

	variables:
	lux_sensor: !input lux_sensor
	max_lux_static: !input max_lux_static
	max_lux_entity: !input max_lux_entity
	min_lux: !input min_lux
	max_brightness: !input max_brightness
	min_brightness: !input min_brightness

	max_lux: >
	{% if max_lux_entity is not none and max_lux_entity != '' %}
	{{ states(max_lux_entity) \| float(500) }}
	{% else %}
	{{ max_lux_static }}
	{% endif %}

	target_brightness: >
	{% set lux = states(lux_sensor) \| float(0) %}

	{# Calculate brightness using linear interpolation #}
	{% set brightness = min_brightness + (lux - min_lux) * (max_brightness - min_brightness) / (max_lux - min_lux) %}

	{# Clamp the result between min/max brightness and round it #}
	{{ [min_brightness, brightness, max_brightness] \| sort \| median \| round(0) }}

	trigger:
	- platform: state
	entity_id: !input lux_sensor
	- platform: state
	entity_id: !input max_lux_entity
	- platform: state
	entity_id: !input target_light
	from: 'off'
	to: 'on'

	condition:
	- condition: state
	entity_id: !input target_light
	state: 'on'
	- condition: template
	value_template: "{{ states(lux_sensor) not in ['unknown', 'unavailable'] and states(lux_sensor) \| is_number }}"
	- condition: template
	value_template: "{{ max_lux > min_lux }}"

	action:
	- service: light.turn_on
	target:
	entity_id: !input target_light
	data:
	brightness_pct: "{{ target_brightness }}"
	transition: 1
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