Home Assistant blueprint: Inovelli VZM31-SN LED Brightness Sync (mirror a bulb's brightness onto the switch LED bar, Smart Bulb Mode)

vzm31-led-brightness-sync.yaml

blueprint:
  name: VZM31-SN LED Brightness Sync
  description: >
    Mirror a controlled light's brightness onto an Inovelli VZM31-SN switch's LED
    bar (the switch's internal level). For Smart Bulb Mode switches, where the LED
    bar is decoupled from the bulb and would otherwise drift. Pauses while a
    "dimming guard" input_boolean is ON, so it won't fight a hold-to-dim loop.
  domain: automation
  input:
    source_light:
      name: Source light (the bulb)
      description: The light whose brightness the LED bar should mirror.
      selector:
        entity:
          filter:
            domain: light
    switch_led:
      name: Switch LED light
      description: The Inovelli switch's own light entity (this drives the LED bar).
      selector:
        entity:
          filter:
            domain: light
    dimming_guard:
      name: Dimming guard (input_boolean)
      description: >
        While this boolean is ON, syncing is paused. Hold-to-dim turns it ON during
        an active dim so the sync doesn't fight the loop, then OFF on release.
      selector:
        entity:
          filter:
            domain: input_boolean
mode: restart
variables:
  source_light: !input source_light
  switch_led: !input switch_led
trigger:
  - platform: state
    entity_id: !input source_light
    attribute: brightness
  - platform: state
    entity_id: !input source_light
    to: "off"
  - platform: state
    entity_id: !input source_light
    to: "on"
condition:
  - condition: state
    entity_id: !input dimming_guard
    state: "off"
action:
  - choose:
      - conditions: "{{ states(source_light) == 'off' }}"
        sequence:
          - action: light.turn_off
            target:
              entity_id: !input switch_led
    default:
      - action: light.turn_on
        target:
          entity_id: !input switch_led
        data:
          brightness: "{{ state_attr(source_light, 'brightness') | int(0) }}"