How to Automate Your Morning Brew with Home Assistant Scripts

Want a fresh cup of coffee the instant you shut off your alarm? With a few simple Home Assistant steps you can have your coffee maker start brewing automatically, so you never waste a second fumbling for the power button in the dark. Follow this guide and turn your bedroom routine into a seamless, code‑driven experience.

Why Home Assistant?

Home Assistant (HA) is an open‑source hub that stitches together smart devices, sensors, and custom scripts. It runs on a Raspberry Pi, a modest PC, or a Docker container and talks to anything that uses MQTT, Zigbee, or Wi‑Fi. For coffee lovers, HA lets you trigger a brew based on events beyond a simple button press—like a smart alarm, temperature drop, or calendar entry.

Getting Your Gear Ready

1. A Smart Coffee Maker that Plays Nice

Not every brewer is Wi‑Fi‑enabled. I use the BrewBot 3000, a drip machine with a simple REST API, but many enthusiasts start with one of the low‑maintenance smart coffee makers that stay under $200. If your machine only has an on/off switch, a cheap Wi‑Fi relay (e.g., Sonoff Basic) wired to the power line gives you full software control.

2. Home Assistant Core

Install HA on a Raspberry Pi 4 (4 GB RAM is ideal). Download the “Home Assistant OS” image, flash it to an SD card, and follow the on‑screen wizard to connect to Wi‑Fi. Once the web UI loads, you’re ready to add integrations.

3. A Trigger Device

I rely on a Google Nest Hub for my morning alarm because it can fire a Home Assistant event when the alarm stops. Any device that can run a short script or send a webhook works—your phone’s alarm app, a motion sensor, or a smart plug that detects the bedroom lamp turning on.

Writing the Brew Script

Home Assistant uses YAML for configuration and Python‑based automations for more advanced logic. Below is a basic automation that starts the BrewBot when the Nest alarm ends.

automation:
  - alias: "Start coffee after alarm"
    trigger:
      platform: event
      event_type: nest_alarm_stopped
    condition:
      - condition: time
        after: "06:00:00"
        before: "09:00:00"
    action:
      - service: switch.turn_on
        target:
          entity_id: switch.brewbot_power

Breakdown

• Trigger – Listens for a custom nest_alarm_stopped event (create it with a Google Assistant routine that calls a Home Assistant webhook).
• Condition – Limits the automation to typical breakfast hours.
• Action – Powers the BrewBot. If your machine supports richer commands, replace switch.turn_on with a rest_command.

Adding a Brew Strength Parameter

If your coffee maker accepts a POST request for brew strength, first define a rest_command:

rest_command:
  set_brew_strength:
    url: "http://192.168.1.45/api/strength"
    method: post
    payload: '{"strength": "{{ strength }}"}'
    content_type: "application/json"

Then adjust the automation:

    action:
      - service: rest_command.set_brew_strength
        data:
          strength: "medium"
      - service: switch.turn_on
        target:
          entity_id: switch.brewbot_power

Now you can tweak strength without touching hardware.

Testing and Tweaking

Automation is iterative. After editing YAML, reload it via Configuration → Server Controls → Reload Automations. Use the Developer Tools panel to fire the trigger manually and watch the BrewBot power up. If it fails, check the Logs for:

• Wrong entity ID – copy‑paste from HA’s entity list.
• Network timeout – ensure both HA and the coffee maker share the same subnet.
• API authentication – store tokens in secrets.yaml to keep them hidden.

Adding a Notification

A push notification lets you know when the brew starts:

    - service: notify.mobile_app_jordan_phone
      data:
        title: "Coffee is brewing"
        message: "Your morning cup will be ready in about 5 minutes."

That buzz in bed feels like a personal butler.

Beyond the Basics

Scheduling Multiple Brews

Duplicate the automation with a different trigger (e.g., a smart wall switch) and bundle the actions into a script. Call the script from each automation for guest‑size pots.

Integrating with Calendar

Home Assistant can read Google Calendar events. Create a “Coffee with Alex” entry, and HA will start a stronger brew automatically. The integration uses OAuth; once authorized, filter events by keyword.

Energy Monitoring

Plug a smart outlet with power monitoring (e.g., TP‑Link Kasa) into the coffee maker. HA can log daily consumption, revealing the true cost of that extra espresso shot and allowing you to apply recommended energy‑saving settings for smart coffee makers.

Voice Control

Add a Google Assistant routine—see our step‑by‑step guide to connecting your coffee maker to Alexa and Google Home—that calls the same Home Assistant webhook used for the alarm. Then you can say, “Hey Google, good morning,” and the house will start brewing while you stay under the covers.

My Morning, Now

A week after setup, my routine is: alarm → stretch → phone buzz (“Coffee is brewing”) → drip of the BrewBot. No more fumbling for a switch, no waiting for a kettle. The automation feels like a quiet, reliable butler.

If you’re hesitant about Home Assistant, start with a single‑switch automation. It’s low‑risk, high‑reward, and once you taste the convenience you’ll likely automate the toaster, blinds, and even the dishwasher. The coffee is just the beginning; keep an eye on upcoming future coffee tech trends.