Light alarm aka Lichtwecker with Home Assistant

light-alarm.yml

alias: "Lichtwecker"
description: "An automation for dimming a light from 0% up to 100% within 15 minutes"
action:
  - type: turn_off
    device_id: 738894a642dab1768d1ab51975b585f7
    entity_id: 6c6e595ddc1b1bfb4027411381678295
    domain: light
  - repeat:
      count: 20
      sequence:
        - service: light.turn_on
          data:
            brightness_step_pct: 5
            transition: 45
          target:
            entity_id: light.led_spots
        - delay:
            hours: 0
            minutes: 0
            seconds: 45
            milliseconds: 0
mode: single