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}}.

To add more areas, use this code and it works for me.

{% set AREAS = ['Kitchen', 'Office', 'Bedroom', 'Living Room'] %}
{% set DOMAIN = 'light' %}

{% set ns = namespace(ids=[]) %}

{# Recorre las áreas y busca entidades de varias formas para asegurar compatibilidad #}
{% for area in AREAS %}
{% set area_id = area | lower | replace(' ', '_') %}

{# Búsqueda normal por ID normalizada #}
{% set found = area_entities(area_id) %}

{# Fallback: usar atributos area_id de las entidades #}
{% if found | length == 0 %}
{% set fallback = states
| selectattr('attributes.area_id','equalto', area_id)
| map(attribute='entity_id')
| list %}
{% set found = found + fallback %}
{% endif %}

{# Último intento: usar el nombre tal cual (por si el area_id no está normalizado) #}
{% if found | length == 0 %}
{% set alt = area_entities(area) %}
{% set found = found + alt %}
{% endif %}

{# Acumular resultados #}
{% set ns.ids = ns.ids + found %}
{% endfor %}

{# Filtrar entidades del dominio (light, switch, etc.) y encendidas #}
{% set encendidas = expand(ns.ids | unique)
| selectattr('domain','equalto', DOMAIN)
| selectattr('state','equalto','on')
| list %}

{{ encendidas | count }}