I would like to create a sensor which tracks the last time the vacuum ran, which is not affected by restarting Home Assistant. So whenever the vacuum did its cleaning routine and ends the routine with the state ‘returning’ I want it to update the timestamp of a new sensor which I can use as secondary info entity.
I thought I once saw an integration (sensor) which could track the state changes of an entity and create a timestamp sensor out of it, but I can’t find it anymore.
Thanks in advance.
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