Proof of concept: Real last_change Saver

[123 (Taras)]

Alternative approach:

Persistent version of "last-changed" for the UI?

Made a simple version using a trigger based template sensor which stores the last change of all entities you list in the trigger. template: - trigger: - platform: state entity_id: - input_boolean.test not_to: - unavailable - unknown not_from: - unavailable - unknown sensor: unique_id: dbf841e2-ae6f-4fc1-9534-a1046204945f name: Nominal Change History state: "OK" attributes: chang…