Flashing Your Home with WLED When Your Dreame Vacuum Finishes Cleaning (and More Fun Automations)

Smart homes are at their best when they don’t just automate tasks—they communicate. One of the most satisfying “tiny joy” automations you can build is visual feedback: your lights reacting to events in your home.

A perfect example is using WLED to flash a specific color when your Dreame robot vacuum finishes cleaning. It’s simple, surprisingly useful, and easy to expand into a full “home status lighting system”.

But don’t stop at “cleaning finished”. Once you start thinking in events, your vacuum becomes just one of many triggers for a more expressive home.

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The Core Idea: Turning Cleaning Status into Light Signals

Most Dreame robot vacuums exposed to Home Assistant provide state changes like:

• cleaning
• returning
• docked
• idle
• error

The idea is simple:

When the vacuum changes from cleaning → docked, trigger a WLED effect (e.g. green flash).

This creates an immediate visual confirmation that doesn’t require checking an app.

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Components You Need

1. Dreame Vacuum Integration

Your vacuum (for example a Dreame L10s Ultra or similar model) should be integrated into Home Assistant. Once connected, you typically get an entity like:

• vacuum.dreame_bot

This entity exposes state changes and sometimes attributes like battery level or cleaning history.

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2. Home Assistant

Home Assistant acts as the brain that listens for state changes and triggers actions.

We’ll use:

• State triggers
• Conditional logic
• Service calls

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3. WLED Device

WLED runs on ESP8266/ESP32 devices and controls addressable LED strips.

You can configure:

• Static colors
• Effects (rainbow, blink, wipe, etc.)
• Segments (different zones of LEDs)

Example hardware:

• ESP32
• WS2812B LED strip behind TV, hallway, or kitchen cabinet

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4. Optional: Smart Lighting Context

To make things more interesting, you can combine WLED with:

• Philips Hue or IKEA Tradfri
• Motion sensors
• Energy monitoring (kWh usage of vacuum charging dock)

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Basic Automation: Flash Green When Cleaning is Done

Let’s start with the core idea: when cleaning ends, flash green for 10 seconds.

Home Assistant YAML

alias: Vacuum finished cleaning - WLED notification
description: Flash green WLED when Dreame vacuum finishes cleaning
trigger:
  - platform: state
    entity_id: vacuum.dreame_bot
    from: "cleaning"
    to: "docked"

condition: []

action:
  - service: light.turn_on
    target:
      entity_id: light.wled_strip
    data:
      rgb_color: [0, 255, 0]
      brightness: 255
      effect: "Blink"
  - delay: "00:00:10"
  - service: light.turn_off
    target:
      entity_id: light.wled_strip

mode: single

What this does:

• Detects when vacuum finishes and returns to dock
• Turns WLED strip green
• Activates blink effect
• Resets after 10 seconds

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Why This Works So Well

This type of automation is powerful because it:

• Removes the need to check apps
• Provides ambient awareness
• Feels “alive” without being noisy
• Is easily extensible

Instead of your vacuum being a silent robot, it becomes part of your home’s communication system.

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Going Beyond “Cleaning Finished”

Now the fun part: turning your vacuum into a status broadcaster for your entire home.

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1. Cleaning Start = Calm Blue Pulse

When cleaning begins, you can signal “work in progress”.

alias: Vacuum started cleaning - WLED blue pulse
trigger:
  - platform: state
    entity_id: vacuum.dreame_bot
    to: "cleaning"

action:
  - service: light.turn_on
    target:
      entity_id: light.wled_strip
    data:
      rgb_color: [0, 120, 255]
      brightness: 180
      effect: "Pulse"

Meaning:

• Blue = active cleaning
• Pulse = ongoing activity

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2. Error State = Red Flash Alert

If the vacuum gets stuck, you want immediate visibility.

alias: Vacuum error - WLED alert
trigger:
  - platform: state
    entity_id: vacuum.dreame_bot
    to: "error"

action:
  - repeat:
      count: 5
      sequence:
        - service: light.turn_on
          target:
            entity_id: light.wled_strip
          data:
            rgb_color: [255, 0, 0]
            brightness: 255
        - delay: "00:00:01"
        - service: light.turn_off
          target:
            entity_id: light.wled_strip
        - delay: "00:00:01"

Meaning:

• Red blinking = immediate attention required

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3. Battery Awareness (Energy Thinking in kWh)

Even though robot vacuum batteries are small, you can still treat energy usage in a “smart home energy” mindset.

For example:

• If battery < 20%, flash yellow
• If charging starts, show slow green breathing effect

alias: Vacuum low battery warning
trigger:
  - platform: numeric_state
    entity_id: vacuum.dreame_bot
    attribute: battery_level
    below: 20

action:
  - service: light.turn_on
    target:
      entity_id: light.wled_strip
    data:
      rgb_color: [255, 180, 0]
      effect: "Breathe"

This pairs well with broader home energy tracking in kWh (washing machines, EV chargers, etc.), creating a consistent “energy awareness language” across your home.

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4. Night Mode: Silent Visual Feedback

At night, you don’t want flashing lights. Instead:

• Dim warm white glow when vacuum finishes
• No blinking

alias: Vacuum finished - night mode indicator
trigger:
  - platform: state
    entity_id: vacuum.dreame_bot
    from: "cleaning"
    to: "docked"

condition:
  - condition: time
    after: "22:00:00"
    before: "07:00:00"

action:
  - service: light.turn_on
    target:
      entity_id: light.wled_strip
    data:
      rgb_color: [255, 160, 80]
      brightness: 40

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5. Room-Based Cleaning Feedback (Advanced Idea)

If your vacuum supports room tracking, you can map colors per room:

• Kitchen → warm white
• Living room → soft green
• Bathroom → blue

Then flash the last cleaned room color when finished.

This requires parsing cleaning history attributes, but it creates a “spatial memory” effect in your lighting.

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6. Energy + Cleaning Dashboard Combo

If you combine:

• Vacuum runtime
• Battery cycles
• Charging energy (in kWh via smart plug)

You can build automations like:

If total weekly vacuum energy > 0.05 kWh, show amber warning on WLED once per week.

This is more advanced, but it connects cleaning automation with broader home efficiency thinking.

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Why WLED Is Perfect for This

WLED is ideal for this kind of automation because:

• Fast response time
• Highly customizable effects
• Works locally (no cloud delay)
• Easily integrated with Home Assistant
• Supports complex animations without heavy scripting

It turns LEDs into a real-time notification layer for your home.

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Final Thoughts

A robot vacuum is already one of the most satisfying smart home devices. But when you connect it to a visual feedback system like WLED, it becomes part of a larger language in your home:

• Green = done
• Blue = working
• Red = problem
• Yellow = attention
• Warm white = quiet mode

Once you build this for your vacuum, it becomes natural to extend it to other systems:

• Washing machine status
• EV charging (kWh-based thresholds)
• Dishwasher completion
• Door locks or security alerts

The result is a home that doesn’t just automate—it communicates.