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. 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?