Home Assistant script to control venetian blinds with Shelly

cover_position_tilt.yaml

# Have a look at the blog post about this script:
# https://medium.com/@lukasvice/a-utility-script-for-controlling-venetian-blinds-with-shelly-in-home-assistant-2e5cbf2d8d5f

script:
  cover_position_tilt:
    mode: parallel
    fields:
      entity_id:
        description: "The cover entity"
        example: "cover.X"
      position:
        description: "Position of the cover"
        example: 100
      tilt_position:
        description: "Tilt position (optional)"
        example: 100
    sequence:
      - alias: "Set variables"
        variables:
          # Time in ms for a full tilt
          tilt_time_ms: 1800
          # Time between blinds move commands
          cmd_wait_time_ms: 500
          _original_position: "{{ state_attr(entity_id, 'current_position') }}"
      - alias: "Open/Close tilt depending on current position"
        choose:
          # When closing
          - conditions: "{{ state_attr(entity_id, 'current_position') > position|int }}"
            sequence:
              # Move to the desired position
              - service: cover.set_cover_position
                data_template:
                  entity_id: "{{ entity_id }}"
                  position: "{{ position|int }}"
              # Blinds have to be tilted, if tilt_position is set and tilt_position is not fully closed
              - alias: "Check if blinds should be tilted"
                condition: template
                value_template: "{{ tilt_position is defined and tilt_position != none and tilt_position|int > 0 }}"
              # Wait for the blinds to stop (Shelly updates current_position on start/stop)
              # Cancel the script if the position was not received after 100 seconds
              - wait_for_trigger:
                  - platform: template
                    value_template: "{% if state_attr(entity_id, 'current_position') != _original_position %}true{% endif %}"
                timeout: 100
                continue_on_timeout: false
              # If it's not the desired position, the blinds were stopped manually (in this case cancel the script)
              - alias: "Check if blinds have reached desired position"
                condition: template
                value_template: "{% if is_state_attr(entity_id, 'current_position', position|int) %}true{% endif %}"
              - delay:
                  milliseconds: "{{ cmd_wait_time_ms }}"
              # Move the blinds the required time for tilting in the original direction
              - service: cover.close_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ tilt_time_ms / 100 * tilt_position|int }}"
              - service: cover.stop_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ cmd_wait_time_ms }}"
              # Move the blinds the required time for tilting in the opposite direction
              - service: cover.open_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ tilt_time_ms / 100 * tilt_position|int }}"
              - service: cover.stop_cover
                data_template:
                  entity_id: "{{ entity_id }}"
          # When opening
          - conditions: "{{ state_attr(entity_id, 'current_position') < position|int }}"
            sequence:
              # Move to the desired position
              - service: cover.set_cover_position
                data_template:
                  entity_id: "{{ entity_id }}"
                  position: "{{ position|int }}"
              # Blinds have to be tilted, if tilt_position is set and tilt_position is not fully open
              - alias: "Check if blinds should be tilted"
                condition: template
                value_template: "{{ tilt_position is defined and tilt_position != none and tilt_position|int < 100 }}"
              # Wait for the blinds to stop (Shelly updates current_position on start/stop)
              # Cancel the script if the position was not received after 100 seconds
              - wait_for_trigger:
                  - platform: template
                    value_template: "{% if state_attr(entity_id, 'current_position') != _original_position %}true{% endif %}"
                timeout: 100
                continue_on_timeout: false
              # If it's not the desired position, the blinds were stopped manually (in this case cancel the script)
              - alias: "Check if blinds have reached desired position"
                condition: template
                value_template: "{% if is_state_attr(entity_id, 'current_position', position|int) %}true{% endif %}"
              - delay:
                  milliseconds: "{{ cmd_wait_time_ms }}"
              # Move the blinds the required time for tilting in the original direction
              - service: cover.open_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ tilt_time_ms / 100 * (100 - tilt_position|int) }}"
              - service: cover.stop_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ cmd_wait_time_ms }}"
              # Move the blinds the required time for tilting in the opposite direction
              - service: cover.close_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ tilt_time_ms / 100 * (100 - tilt_position|int) }}"
              - service: cover.stop_cover
                data_template:
                  entity_id: "{{ entity_id }}"
        # Special case: the blinds are already in the desired position
        default:
          - alias: "Continue only if blinds are not fully opened or closed"
            condition: template
            value_template: "{{ state_attr(entity_id, 'current_position') > 0 and state_attr(entity_id, 'current_position') < 100 }}"
          - choose:
              # When the blinds are almost closed, move up for the tilt time
              - conditions: "{{ state_attr(entity_id, 'current_position') < 10 }}"
                sequence:
                  - service: cover.open_cover
                    data_template:
                      entity_id: "{{ entity_id }}"
                  - delay:
                      milliseconds: "{{ tilt_time_ms }}"
                  - service: cover.stop_cover
                    data_template:
                      entity_id: "{{ entity_id }}"
            # When the blinds are open, move down for the tilt time
            default:
              - service: cover.close_cover
                data_template:
                  entity_id: "{{ entity_id }}"
              - delay:
                  milliseconds: "{{ tilt_time_ms }}"
              - service: cover.stop_cover
                data_template:
                  entity_id: "{{ entity_id }}"
          - delay:
              milliseconds: "{{ cmd_wait_time_ms }}"
          # Trigger event to restart the script with the original parameters
          - event: start_cover_position_tilt
            event_data:
              entity_id: "{{ entity_id }}"
              position: "{{ position }}"
              tilt_position: "{{ tilt_position }}"

automation:
  # Automation triggered by a custom event to restart the script
  - id: start_cover_position_tilt
    alias: "Start Cover Position Tilt"
    mode: parallel
    trigger:
      - platform: event
        event_type: "start_cover_position_tilt"
    action:
      - service: script.cover_position_tilt
        data_template:
          entity_id: "{{ trigger.event.data.entity_id }}"
          position: "{{ trigger.event.data.position }}"
          tilt_position: "{{ trigger.event.data.tilt_position }}"

how-to-call-the-script.yaml

service: script.cover_position_tilt
data:
  entity_id: cover.shelly_XXX
  position: 70
  tilt_position: 50

Hi everyone, Shelly has announced the new 2PM Gen3 with drum roll blind angle control! Let's hope they got it right and this is the feature we've been waiting for!

It actually is. I raised a ticket with them a few weeks ago where they told me that i should stay tuned for this feature to come. The 3rd Gen Pro devices already have that feature. Now HomeAssistant integration needs an update I guess and than things should work.

Hi. Nice script. I'm trying to make an action where at a specified time 4 blinds (4 x Shelly 2PM) are set to a certain position and no way I can get it to work. Only maybe 2 of the 4 always respond. Or some don't set the tilt position. It doesn't even work when I enter actions in succession or in parallel. If I make an action on just one blinds, it works.
Any idea?