Run automation after input changed x hours ago

Configuration
1

Hi
I have a couple of things i want to impliment.
I have movement sensors in rooms that are occupied when the kids come. I would like to turn of the heating to these rooms after 12 hours since movement detector last activated. Also turn on when the movement sensor is activated.
I ‘could’ use a 12 hour timer but as this wont survive reboots id prefer to check say every 10 mins what the timestamp of the last detection was.
Any suggestions please?

James

2

I use this

  {{  (as_timestamp(now())-as_timestamp(states.binary_sensor.pir_kokken.last_changed))   > 1000}}´

1000 is seconds

3

Great thanks, is that the trigger?

4

I’d suggest that every time the sensor turns off, you set an input_datetime for +12 hours.

That will survive restarts and reboots, which the template suggested won’t.

Then you can use that input_datetime in a time trigger, and also have a startup trigger, then check to see if the time has passed the target:

trigger:
- platform: time
  at: input_datetime.whale_idle
  id: time
- platform: homeassistant
  event: start
  id: start
condition:
- condition: or
  conditions:
  - condition: trigger
    id: time
  - condition: time
    after: input_datetime.whale_idle
action:
...
1 Like
5

yes i use it as a trigger, but it restart when you restart HA

6

Ok thats great info
Couple of things

When you say it will restart on HA restart does that mean the last_change value is lost on restart?

also if using the other method it appears when it triggers it sets a new trigger in the future to turn the heating off, if there is another trigger of the moevement sensor will that remove the previous turn off trigger?

Many Thanks

7

If you have an automation like this, then it’ll keep setting it forwards 12 hours:

trigger:
- platform: state
  entity_id: binary_sensor.petunia_movement
  to: 'off'
action:
- service: input_datetime.set_datetime
  data:
    entity_id: input_datetime.whale_idle
    timestamp: "{{ as_timestamp(now() + timedelta(hours=12)) }}"

Every time it stops detecting movement the turn off input_datetime is set forwards 12 hours.

8

Superb thanks
Does this go in the configuration.yaml file?

James

9

Both of the code snippets I’ve shared are parts of an automation.