May the 4th Be With Your Home Assistant – Fun Star Wars Automations

Every year on May 4th, tech enthusiasts and sci-fi fans alike celebrate Star Wars Day. It’s the perfect excuse to combine automation, creativity, and a bit of humor inside your smart home setup.

If you’re already running Home Assistant, you probably have a solid foundation of integrations, sensors, and automations. But what if, just for one day (or maybe longer…), your home embraced the Force?

In this guide, we’ll create a “Star Wars Mode” in Home Assistant and build a practical automation example using components you likely already have. The goal is not just fun—but also to demonstrate how flexible and powerful Home Assistant can be.

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What We’re Building

We’ll create:

• A Star Wars Mode toggle
• A text-to-speech (TTS) notification system
• A real automation example (EV charging / status notification)
• A reusable structure for adding more themed automations

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Components Explained

Before jumping into YAML, let’s break down the core components used in this setup.

1. Input Boolean (Feature Toggle)

We use an input_boolean to enable or disable Star Wars Mode.

Why this is useful:

• Keeps your normal automations intact
• Lets you activate the theme only on May 4th (or whenever you want)
• Can be reused for other “modes” (holiday mode, vacation mode, etc.)

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2. Text-to-Speech (TTS)

TTS allows Home Assistant to “speak” messages through a media player.

Typical use cases:

• Notifications
• Alerts
• Fun interactions (like this one)

For this guide, we’ll use it to deliver Star Wars-themed messages like:

“Your vehicle is fully charged. The Force is strong with you.”

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3. Sensors and Integrations

We’ll use:

• EV battery sensor (e.g. sensor.car_battery_level)
• Charging status (from your charger or integration)
• Electricity price (kWh from Nordpool)

These are already part of many Home Assistant setups, making this example realistic and practical.

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4. Media Player

A media player (like a Google Nest, Sonos, or similar) is required for TTS.

Example entity:

media_player.living_room_speaker

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Step 1: Create Star Wars Mode

Add this to your configuration:

input_boolean:
  star_wars_mode:
    name: Star Wars Mode
    icon: mdi:lightsaber

Once added, reload helpers or restart Home Assistant.

Now you have a toggle in your UI that controls whether your home speaks like a Jedi… or not.

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Step 2: Create a Reusable TTS Script

Instead of duplicating TTS logic everywhere, we create a script.

script:
  star_wars_tts:
    alias: Star Wars TTS
    sequence:
      - condition: state
        entity_id: input_boolean.star_wars_mode
        state: "on"
      - service: tts.google_translate_say
        target:
          entity_id: media_player.living_room_speaker
        data:
          message: "{{ message }}"

Why use a script?

• Centralized logic
• Easy to reuse
• Automatically respects Star Wars Mode

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Step 3: Practical Automation Example – EV Charging

Let’s build something useful.

Scenario:

• Your car finishes charging
• Electricity price is low enough (kWh-based logic)
• You get a themed notification

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Automation: “Lightsaber Fully Charged”

automation:
  - alias: Star Wars - EV Fully Charged
    description: Notify when EV is fully charged with Star Wars theme
    trigger:
      - platform: numeric_state
        entity_id: sensor.car_battery_level
        above: 95
    condition:
      - condition: state
        entity_id: input_boolean.star_wars_mode
        state: "on"
    action:
      - service: script.star_wars_tts
        data:
          message: "Your vehicle is fully charged. Your weapon is ready."

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Optional: Add Electricity Price Logic

If you’re using Nordpool:

      - condition: numeric_state
        entity_id: sensor.nordpool_kwh_no3_nok_3_10_025
        below: 1.5

Now your notification only triggers when electricity is reasonably priced (measured in NOK per kWh).

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Step 4: Add a “Dark Side” Warning

Let’s make it smarter.

If electricity prices are high:

  - alias: Star Wars - Expensive Power Warning
    trigger:
      - platform: numeric_state
        entity_id: sensor.nordpool_kwh_no3_nok_3_10_025
        above: 2.5
    condition:
      - condition: state
        entity_id: input_boolean.star_wars_mode
        state: "on"
    action:
      - service: script.star_wars_tts
        data:
          message: "Warning. The dark side of electricity pricing is strong."

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Step 5: Scheduling Star Wars Mode Automatically

You can automate the mode for May 4th:

automation:
  - alias: Enable Star Wars Mode on May 4th
    trigger:
      - platform: time
        at: "00:01:00"
    condition:
      - condition: template
        value_template: "{{ now().month == 5 and now().day == 4 }}"
    action:
      - service: input_boolean.turn_on
        target:
          entity_id: input_boolean.star_wars_mode

And disable it at night:

  - alias: Disable Star Wars Mode
    trigger:
      - platform: time
        at: "23:59:00"
    action:
      - service: input_boolean.turn_off
        target:
          entity_id: input_boolean.star_wars_mode

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Expanding the Idea

Once you have the structure in place, you can easily extend it.

Ideas:

• Garbage collection reminder
  • “Warning! Trash compactor is almost full.”
• Plant watering
  • “Water this plant, you must.”
• Door lock events
  • “Access granted.”
  • “These are not the doors you’re looking for.”
• Morning routine
  • Play music + “The Force is strong with you today.”

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Why This Is Actually Useful

While this might seem like a fun gimmick, it demonstrates something important:

• How to modularize automations
• How to use feature toggles
• How to reuse scripts effectively
• How to integrate real data (kWh, battery levels) into automations

This pattern can easily be reused for:

• Holiday modes
• Night mode
• Vacation automations
• Silent mode (disable TTS completely)

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Final Thoughts

Home Assistant is at its best when it reflects your personality. Whether that’s minimalistic efficiency or full sci-fi immersion is entirely up to you.

A small feature like Star Wars Mode can make your smart home feel more alive—and at the same time showcase how powerful your setup really is.

So go ahead:

Enable the mode.
Let your automations speak.
And remember…

May the 4th be with your Home Assistant.