[Home Assistant] Light Brightness Scripts

scripts.yaml

################################################################################
## Scripts to Adjust Light Brightness
################################################################################

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## Example Usage
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# - service: script.increase_brightness
#   data:
#     entity_id: light.living_room

# - service: script.decrease_brightness
#   data:
#     entity_id: light.living_room

################################################
## Scripts
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# Increase the brightness of a light. If the light is off, it will go to maximum brightness.
increase_brightness:
  alias: Increase Light Brightness
  sequence:
    - service: light.turn_on
      data_template:
        entity_id: "{{ entity_id }}"
        brightness: >-
          {% set brt_min = 5 %}
          {% set brt_max = 254 %}
          {% set brt_steps = 6 %}
          {% set brt_step = ((brt_max - brt_min) / brt_steps)|round(0, 'floor') %}
          {% set brightness = state_attr(entity_id, 'brightness')|int(0) %}

          {% if brightness %}
            {# Increase brightness one step. #}
            {{ (brightness + brt_step, brt_max)|min }}
          {% else %}
            {# Set the brightness to max if light is off. #}
            {{ brt_max }}
          {% endif %}

# Decrease the brightness of a light. If the light is off, it will go to minimum brightness.
decrease_brightness:
  alias: Decrease Light Brightness
  sequence:
    - service: light.turn_on
      data_template:
        entity_id: "{{ entity_id }}"
        brightness: >-
          {% set brt_min = 5 %}
          {% set brt_max = 254 %}
          {% set brt_steps = 6 %}
          {% set brt_step = ((brt_max - brt_min) / brt_steps)|round(0, 'floor') %}
          {% set brightness = state_attr(entity_id, 'brightness')|int(0) %}

          {% if brightness %}
            {# Decrease brightness one step. #}
            {{ (brightness - brt_step, brt_min)|max }}
          {% else %}
            {# Set the brightness to min if light is off. #}
            {{ brt_min }}
          {% endif %}