Last Activity Date and Time from a Sensor that have not

Configuration
1

Hi,
I am new on HA and I am migrating from OpenHab.
I have lots of occupancy and contact sensors, and I would like to have in my dastboard an Entity with last activity of each single sensor.
My idea is to create a datetime helper for each sensor, an automation to update helper then show on Dashboard.
But this is a nightmare to implement and mantain. What I am looking for is a smarter and simple way to have Last Activity for each sensor without create lots of helper and lots of automation.

Many thanks in advance for help

Marco

2

Each and every HA entity has 2 semi-hidden attributes:

  • last_updated: time the state or any attribute of the entity last changed
  • last_changed: time the state only of the entity last changed

You can read them with, e.g.

{{ states.light.lampe_bureau.last_changed }}

Beware that {{ state_attr("light.lampe_bureau", "last_changed") }} won’t work, though, as those are not attributes proper.

3

Hi @koying
it work great. Using:

{{ states.binary_sensor.xiaomi_occupancy_ingresso_occupancy.last_changed }}

I got:

2023-08-09 04:57:29.773421+00:00

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I am on CET timezone and now I am on Daylight saving, so my time is 2 hour ahed the value returned. HA is configured on my timezone, is there a way to get date on my timezone and formatting in italian way ( day/month/year hh:mm:ss)?

Many Thanks in advance

4

Fixed,
here is the code:

{{ states.binary_sensor.xiaomi_occupancy_ingresso_occupancy.last_changed.timestamp() |
  timestamp_custom('%d.%m.%Y') }} {{
  states.binary_sensor.xiaomi_occupancy_ingresso_occupancy.last_changed.timestamp() |
  timestamp_custom('%H:%M:%S', true) }}