I’m trying to create an automation that runs when a Raspberry Pi is no longer on the network. I have a Raspberry Pi in my attic that tracks ADS-B air traffic, and from time to time it drops off the network, I am trying to create an automation that detects when this happens. I have the RPI Monitor running and the condition I want to create a trigger for is when the CPU hasn’t changed in XX minutes shown in the screenshot below
looks to me like you have an entity on it already that stops changing. so i think you want last_changed. if you have an automation that stops getting invoked you can use last_triggered as @jeffcrum posted. you can create a template automation that directly triggers off of last_changed being longer than your threshold.