Time elapsed from entity state change

[the.bigfamily0116 (Bigfamily)]

Hello.

I would like to make a sensor which shows how much time elapsed from when I turned off a light or a switch, or a state change of an entity.

Can anyone help me? I am not a programmer.

Thank you very much.

[tom_l]

Here’s one I prepared earlier:

Countdown till sunset

Try this: sensor: - platform: template sensors: time_to_sunset: value_template: "{{ relative_time(state_attr('sun.sun', 'next_setting')) }}"

It will only work for past events. You want

states.domain.object_id.last_changed as the entity. e.g.

value_template: "{{ relative_time(states.light.my_light.last_changed) }}"

[the.bigfamily0116 (Bigfamily)]

Thank you very much. This works perfectly as well.