A collection of useful templates for Home Assistant dashboards

All open windows and doors

{{ states.binary_sensor
   | selectattr('attributes.device_class', 'in', ['door','window'])
   | selectattr('state', 'equalto', 'on')
   | list | count }}

Light On Count

{% set AREAS = ['kitchen','office','bedroom','living room'] %}
{% set DOMAIN = 'light' %}

{% set ns = namespace(ids=[]) %}
{% for a in AREAS %}
  {% set ns.ids = ns.ids + area_entities(a) %}
{% endfor %}
{{ expand(ns.ids|unique)
   | selectattr('domain','equalto', DOMAIN)
   | selectattr('state','equalto','on')
   | list | count }}

Markdown to display all open windows and doors

# Security 🔏

{% if states.sensor.open_doors_and_windows.state | int > 0 %}
  You have {{states.sensor.open_doors_and_windows.state}} doors/windows open.
{% else %}
  All windows and doors are closed.
{% endif %}

Markdown to display light counts

## Lights 💡
You have {{states.sensor.kitchen_light_count.state}} lights on currently.

Media Player Playing Count

{% set area_id = 'kitchen' %}
{% set ents   = expand(area_entities(area_id)) %}
{% set lights = ents 
   | selectattr('domain',    'equalto', 'media_player') 
   | selectattr('state',     'equalto', 'playing') %}
{{ lights | list | count }}

Switch On Count

{% set area_id = 'kitchen' %}
{% set ents   = expand(area_entities(area_id)) %}
{% set switch = ents 
   | selectattr('domain', 'equalto', 'switch') 
   | selectattr('state', 'equalto', 'on') %}
{{ switch | list | count }}

Welcome Message

{% set time = now().hour %}
{% if time >= 5 and time < 12 %}
  {% set greeting = 'Good morning' %}
{% elif time >= 12 and time < 17 %}
  {% set greeting = 'Good afternoon' %}
{% elif time >= 17 and time < 24 %}
  {% set greeting = 'Good evening' %}
{% elif time >= 0 and time < 5 %}
  {% set greeting = 'You should be sleeping' %} 
{% endif %}

# {{greeting}}, {{user}}!

Welcome message with calendar event

{% set time = now().hour %}
{% if time >= 5 and time < 12 %}
  {% set greeting = 'Good morning' %}
{% elif time >= 12 and time < 17 %}
  {% set greeting = 'Good afternoon' %}
{% elif time >= 17 and time < 24 %}
  {% set greeting = 'Good evening' %}
{% elif time >= 0 and time < 5 %}
  {% set greeting = 'You should be sleeping' %} 
{% endif %}

{% if state_attr('calendar.lewis_s_calendar', 'start_time') == None %}
  {% set cal_message = "you have no upcoming events, enjoy 🥳"%}
{% else %}
  {% set start_time = state_attr('calendar.lewis_s_calendar', 'start_time') | as_timestamp | timestamp_custom("%H:%M", false) %}
  {% set cal_message = "your next event is at " + start_time %}
{% endif %}

# {{greeting}}, {{user}}!

It's {{now().hour}}:{{now().minute}} and  {{cal_message}}.

The light-on count is watching ALL entities in the given areas changes which is not efficient. Better to filter the ns.ids to only the target domains:

@reubendowle man, that saved the day. took my home assistant from using 20 % cpu and 20 GB of ram and crashing intermittently and sluggish to fast again, using 3.9% cpu and 9 GB of ram. Thanks!

I'd like to share a small change I made to the "light on count template"

In my version, I simply use all available areas via areas(). Since I don't have that many devices yet, iterating over the whole house is fine for my setup.

Most of my devices are connected via Zigbee2MQTT, and I added an availability check there. We sometimes turn off lights using the physical wall switch, which means Home Assistant may still think the light is "on" even though it is actually off.
Without the additional line, the counter is always wrong (in my case)

I also added the Line of @ccitro

For the Light On Count, you can exclude hidden entities like this ...
| rejectattr('entity_id', 'is_hidden_entity')

My updated Code:

{% set AREAS = areas() %}
{% set DOMAIN = 'light' %}

{% set ns = namespace(ids=[]) %}
{% for a in AREAS %}
  {% set ns.ids = ns.ids + area_entities(a) %}
{% endfor %}
{{ expand(ns.ids|unique)
   | selectattr('domain','equalto', DOMAIN)
   | selectattr('state','equalto','on')
   | rejectattr('entity_id', 'is_hidden_entity')
   | rejectattr('state', 'equalto', 'unavailable')
   | list 
   | count 
}}

Replacing line 21 of Welcome message with calendar event solves the issue where minute values < 10 are displayed as single integers with no leading 0:

It's {{ now().strftime("%H:%M") }} and {{ cal_message }}.

Thank you!

or state_attr('calendar.lewis_s_calendar', 'start_time') | as_datetime | as_local > today_at('00:00:00') %}

Thank you!