this post was submitted on 27 Jan 2024
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Resetting Timers (lemmy.tf)
submitted 9 months ago by [email protected] to c/[email protected]
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I have a bunch of presence and motion sensors (like four, but shush) and when people leave rooms I would like to turn the lights off after five minutes, however if someone returns to the room before that five minutes is up, I'd like to start that countdown again. Is there a grateful way to do this that isn't me just doing if no activity for five minutes, turn off the lights, else wait five minutes and then turn off the lights. Because that's ugly, rigid and not very smart at all.

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[–] [email protected] 1 points 9 months ago (1 children)

@sabreW4K3
Create a timer that you set to 5 minutes.
Create an automation with 3 triggers:

  1. Motion is detected
  2. Motion clear
  3. Timer changes to idle

Choice of three actions:

When 1:
Switch light on
Cancel timer (this takes care of motion being detected again during the 5 minute delay)

When 2:
Start timer (And let’s wait for 5. Minutes for timer to end)

When 3:
Check that motion is clear (as motion also cancels the timer)
If so, switch light off

[–] [email protected] 1 points 9 months ago

This broke my brain at first. I had to keep coming back to it. Thank you so much.