Turn On to Default Scene (Companion Blueprint)

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Turn On to Default Scene (Companion Blueprint)

Open your Home Assistant instance and show the blueprint import dialog with a specific blueprint pre-filled.

This blueprint automatically activates a preferred default scene whenever a light, switch, or input boolean turns on from an external source (such as an app, a physical wall switch, or a voice command).

Additionally, it features an optional counter synchronization mechanism: when paired as a companion to the “Button Scene Cycling and Off Control” blueprint, it automatically resets the cycle counter back to zero whenever the device turns on externally, ensuring your button-cycling sequence always stays synchronized from the start.

Features

  • External Activation Synchronization: Detects when a monitored device switches from off to on via physical switches, voice, or apps, and immediately forces your chosen default scene.
  • Optional Companion Counter Reset: Safely resets a designated counter helper entity on trigger when used as a companion to the button cycling blueprint. Functions seamlessly as a standalone blueprint if left blank.
  • Multi-Domain Compatibility: Compatible with smart switches, lights, and input booleans.

Prerequisites

If you plan to use this blueprint as a companion to sync with the “Button Scene Cycling and Off Control” blueprint, you should already have a Counter Helper created in Home Assistant:

  1. Navigate to Settings > Devices & Services > Helpers.
  2. Click Create Helper and select Counter.
  3. Set your initial value to 0 and configure your step/minimum/maximum values as needed for your cycling setup.
  4. Click Create.

(Note: If you are using this blueprint purely as a standalone tool, no helper is required and you can leave the companion section blank.)

Input Configuration

Section Input Field Type Description
Target Device Settings Target Device Entity (switch, light, input_boolean) The switch, light, or input boolean to monitor for external turn-on events.
Default Scene Entity (scene) The default scene to activate whenever the target device turns on.
Companion Options (Optional) Counter Helper Entity (counter) Optional Counter helper to reset to 0. Leave blank if using this blueprint standalone.

How the Blueprint Lifecycle Works

  1. State Monitoring: The automation listens for the Target Device state to transition from off to on.
  2. Scene Enforcement: Once triggered, it immediately commands the Default Scene to activate.
  3. Optional Counter Reset: It evaluates the optional Counter Helper. If configured, it executes a clean variable check and resets the counter value back to 0, allowing your button-cycling companion blueprint to start fresh from the first scene.

Installation

Method 1: Click to Import (Easiest)

Click the badge below to import this blueprint directly into your Home Assistant instance:

Open your Home Assistant instance and show the blueprint import dialog with a specific blueprint pre-filled.

Method 2: Manual Installation

  1. Download or clone the raw file from this repository: target_turn_on_synchronizer.yaml
  2. In your Home Assistant configuration directory, navigate to your blueprints folder (e.g., config/blueprints/automation/ufans123/).
  3. Paste the code into a file named target_turn_on_synchronizer.yaml.
  4. Reload your automations or restart Home Assistant.

Method 3: Manual Installation using the Blueprints Dashboard (Easier)

  1. Copy the following URL:
https://github.com/ufans123/home-assistant-blueprints/blob/main/target_turn_on_synchronizer.yaml
  1. Navigate to your Home Assistant Blueprints Dashboard UI (Settings > Automations & Scenes > Blueprints).
  2. In the bottom right corner, click on the Import blueprint button.
  3. Paste in the URL and follow the prompts.

:link: Related Blueprint

Note: This blueprint shares an optional counter helper to keep scene cycles in sync across physical buttons and external triggers (apps, voice commands, or wall switches).