Time since last zone visit

Configuration
1

Hi,

Normally I can wrap my head around these things but I am struggling with this one. I can’t seem to work it out with all the moving parts.

Using a device tracker (in my case the icloud3 and beta app) how can I get a sensor that says how many days its been since I was last in a zone. I need the sensor to persist between reboots so it doesn’t reset. For this I am attepting to use MQTT with the retain flag.

No matter what I try I cant get the device tracker to fire the MQTT reliably or in the right time format. Also all my automations end up being so long to write as I am having to repeat the code.

Any pointing in the correct direction or sample code would be really helpful.

Thanks!

Bob

2

It would help if you could share what you’ve tried so far. If anything, it’ll help us provide you with a answer that is relevant to you.
here is an example that sends an MQTT message when a device_tracker’s state changes

- alias: location_to_mqtt
  trigger:
      - platform: state
        entity_id: device_tracker.device_tracker_name
  action:
    service: mqtt.publish
    data_template:
      topic: 'location/device_tracker_name'
      payload_template: '{{ trigger.to_state.state }}'
      retain: true

You probably want to add a condition to make sure the message is only fired when the state is one of the zones:

{{ states('device_tracker.device_tracker_name') in states.zone | lower }}