A callable automation blueprint that cycles a light through configurable brightness levels. If brightness is at or above the highest level, it wraps to the lowest.

ZHA - Cycle Tuya light brightness.yaml

blueprint:
  name: Cycle Tuya light brightness
  description: >
    A callable automation blueprint that cycles a light through configurable brightness levels.
    If brightness is at or above the highest level, it wraps to the lowest.
  domain: automation
  input:
    target_light:
      name: Light to control
      description: Select the light entity whose brightness will be cycled.
      selector:
        entity:
          domain: light

    brightness_levels:
      name: Brightness Levels
      description: >
        List of brightness levels (percent) to cycle through. Example: [1, 33, 66, 100]
      default: [1, 33, 66, 100]
      selector:
        object:

trigger: []

mode: restart

variables:
  processed_brightness_levels: !input brightness_levels

action:
  - service: system_log.write
    data:
      message: "Light Cycle Debug: Processed Levels: {{ processed_brightness_levels }}"
      level: info

  - variables:
      light_entity_id: !input target_light
      current_brightness_pct_ha_attr: >
        {% set current_pct = state_attr(light_entity_id, 'brightness_pct') %}
        {% if current_pct is not none %}
          {{ current_pct | float(0.0) }}
        {% else %}
          {% set current_255 = state_attr(light_entity_id, 'brightness') | float(0.0) %}
          {{ (current_255 / 255.0 * 100.0) | round(0) | float }}
        {% endif %}

  - service: system_log.write
    data:
      message: "Light Cycle Debug: Current Brightness PCT: {{ current_brightness_pct_ha_attr }}"
      level: info

  - variables:
      next_brightness: >
        {% set levels = processed_brightness_levels %}
        {% set current_val = current_brightness_pct_ha_attr %}
        {% set sorted = levels | sort %}
        {% set next_list = sorted | select('gt', current_val) | list %}
        {{ (next_list[0] if next_list | length > 0 else sorted[0]) }}

  - service: system_log.write
    data:
      message: "Light Cycle Debug: Setting brightness to: {{ next_brightness }}"
      level: info

  - service: light.turn_on
    target:
      entity_id: "{{ light_entity_id }}"
    data:
      brightness_pct: "{{ next_brightness }}"