Home Assistant Wake Up Alarm Trigger Automation

#homeassistant #automation #template

This assumes you've already set up the companion Home Assistant app to your phone an enabled the Alarm Sensors

Testing in Editor

Utilize the template playground editor to understand how to create a template. http://YOUR_HA_IP:8123/developer-tools/template

isAlarmRinging: {{now().strftime("%a %h %d %H:%M %Z %Y") ==
              (((state_attr('sensor.phone_next_alarm', 'Time in Milliseconds') |
           int / 1000)) | timestamp_custom('%a %h %d %H:%M %Z %Y'))}}

{# extra examples to understand above code #}
{% set timeNow = now().strftime("%a %h %d %H:%M %Z %Y") %}
{% set myAlarm = (state_attr('sensor.phone_next_alarm', 'Time in Milliseconds') | int / 1000) | timestamp_custom('%a %h %d %H:%M %Z %Y')  %}
timeNow: {{ timeNow }}
myAlarm: {{ myAlarm }}

The output 'Result' should look like

isAlarmRinging: False

timeNow: Wed Oct 02 13:17 CDT 2024
myAlarm: Thu Oct 03 06:12 CDT 2024
be sure to replace phone_next_alarm with the unique name of your phone sensor

On Your Phone

You should be able to set the alarm and watch the myAlarm update in real time. When the timeNow and myAlarm match you should see isAlarmRinging: True just for a split second.

You may miss it with the naked eye, but the computer will recognize it as a trigger for automation.

Configuration.yaml

Now e can move on to creating the sensor in .yml. I've code split my templates into a seperate template.yaml.

## configuration.yaml
template: !include template.yaml

## template.yaml
- sensor:
    - name: "isAlarmRinging_myphone"
      # state: false
      state: >
        {{now().strftime("%a %h %d %H:%M %Z %Y") ==
          (((state_attr('sensor.phone_next_alarm', 'Time in Milliseconds') |
           int / 1000)) | timestamp_custom('%a %h %d %H:%M %Z %Y'))}}

don't forget to change phone_next_alarm and isAlarmRinging_myphone to your needs

Home Assistant

Move to the HA UI in your browser to restart home assistant. Confirm the sensor was created at http://hYOUR_HA_IP:8123/config/entities and make sure it's showing as False

attachments/Pasted image 20241002132658.png

Automation

The automation I've set up with this alarm turns on my lights for my wake up morning routine.

attachments/Pasted image 20241002132811.png

This routine logic:

  1. Trigger when current time equals alarm time (When isAlarmRinging_myphone goes False to True)
  2. and if time is between 5am - 9am
  3. activate wake up scene

Credit