KNX - relative dimming for lights blueprint

knx-relative-dimming-for-lights.yaml

blueprint:
  name: KNX - relative dimming for lights
  description: Controll Home Assistant Light entities from KNX switching and relative dimming (DPT 3.007) telegrams.
  domain: automation
  input:
    target_lights:
      name: Light
      description: The lights that shall be controled.
      selector:
        target:
          entity:
            domain: light
    switch_address:
      name: Switch group address
      description: >
        Group address for switching the lights on and off. DPT 1
        Example: '1/2/3'
    dimm_address:
      name: Relative dimming address
      description: >
        Group address for dimming the lights. DPT 3.007
        Example: '1/2/4'
    dimm_time:
      name: Dimm time
      description: Time dimming from 0 to 100% shall take.
      selector:
        number:
          min: 1
          max: 20
          step: 0.1
          unit_of_measurement: seconds
          mode: slider
      default: 4
    dimm_steps:
      name: Dimm steps
      description: Steps used to dimm from 0 to 100%.
      selector:
        number:
          min: 2
          max: 100
          step: 1
          unit_of_measurement: steps
          mode: slider
      default: 20

# no matched condition stops repeat sequence to stop dimming (dimm 0)
mode: restart
max_exceeded: silent

variables:
  _dimm_time: !input dimm_time
  _dimm_steps: !input dimm_steps
  dimm_time: "{{ _dimm_time|float }}"
  dimm_steps: "{{ _dimm_steps|int }}"
  dimm_step: "{{ (255 / dimm_steps) | round(0, 'ceil') }}"
  dimm_delay: "{{ dimm_time * 1000 / dimm_steps }}"


trigger:
  - platform: homeassistant
    event: start
    id: "initialize"
  - platform: event
    event_type: automation_reloaded
    id: "initialize"
  # when KNX integration was reloaded
  - platform: event
    event_type: service_registered
    event_data:
      domain: knx
      service: event_register
    id: "initialize"
  - platform: event
    event_type: knx_event
    event_data:
      destination: !input switch_address
      telegramtype: GroupValueWrite
    id: "switch"
  - platform: event
    event_type: knx_event
    event_data:
      destination: !input dimm_address
      telegramtype: GroupValueWrite
    id: "dimm"

action:
  - choose:
    # TURN ON
    - conditions:
        condition: and
        conditions:
          - condition: trigger
            id: "switch"
          - "{{ trigger.event.data.data == 1 }}"
      sequence:
        - service: light.turn_on
          target: !input target_lights
    # TURN OFF
    - conditions:
        condition: and
        conditions:
          - condition: trigger
            id: "switch"
          - "{{ trigger.event.data.data == 0 }}"
      sequence:
        - service: light.turn_off
          target: !input target_lights
    # DIMM UP
    - conditions:
        condition: and
        conditions:
          - condition: trigger
            id: "dimm"
          - "{{ 9 <= trigger.event.data.data <= 15 }}"
      sequence:
        - repeat:
            count: '{{ dimm_steps }}'
            sequence:
              - service: light.turn_on
                target: !input target_lights
                data:
                  brightness_step: '{{ dimm_step }}'
              - delay:
                  milliseconds: '{{ dimm_delay }}'
    # DIMM DOWN
    - conditions:
        condition: and
        conditions:
          - condition: trigger
            id: "dimm"
          - "{{ 1 <= trigger.event.data.data <= 7 }}"
      sequence:
        - repeat:
            count: '{{ dimm_steps }}'
            sequence:
              - service: light.turn_on
                target: !input target_lights
                data:
                  brightness_step: '{{ -dimm_step }}'
              - delay:
                  milliseconds: '{{ dimm_delay }}'
    # INITIALIZE
    - conditions:
        condition: trigger
        id: "initialize"
      sequence:
        - service: knx.event_register
          data:
            address: !input switch_address
        - service: knx.event_register
          data:
            address: !input dimm_address

@kruzgix Hi 👋!
Areas should work properly now.
The blueprint also keeps working when the KNX integration was reloaded.

Hi, it works well, but how does it work with the state adress?
I don't get that.
Or do you need to expose it seperatly?
Thanks in advance.

@Reteip10 right, use expose. This blueprint only has one-way communication.
Or fork the blueprint and add it 😉

What about controlling color_temp for tunable white bulbs? Did you happen to implement it before?

I guess it would work the same way as brightness - so you may just fork it and add the options you need for your installation.

hm, but color_temp only accepts mirads as input, not steps. I think we need to convert it somehow.

Depends on the actuator, I guess. The ones I know support DPT 3 color temp dimming, just like brightness.
And HA supports Kelvin too, so no need to deal with Mireds afaic.

Yeah, kelvin should be fine for Phillips Finance white