Sensor Event History

[GACHAPO (Glenn Chapman)]

Hello,

Is there a way to store sensor history in a file?

[tom_l]

Yep, the file notification:

Export sensor data to text file

You can use the file notification for this. All you have to do is build the message like you want. eg: notify: - platform: file name: filenotify filename: /your/path/to/file.csv #timestamp: true automation: - alias: sensor_values_to_file initial_state: 'on' trigger: - platform: time at: '23:59:55' action: - service: notify.filenotify data_template: message: "{{ states.sensor.test_sensor1.state }};{{ states.sensor.test_sensor2…

[GACHAPO (Glenn Chapman)]

That’s great.

A few questions;

1. Will it show the time the event occured?
2. Will it show a list of all events until cleared?
3. Can you show the full file history on Lovelace?

Thanks again

Glenn

[tom_l]

1. Yes if you follow VDrainer’s example.
2. It will continue to grow until you manually delete the contents. You might be able to use a shell script to delete the file.
3. If you want to do this use the custom-home-feed card instead.

[GACHAPO (Glenn Chapman)]

Hi Tom,

Just back onto this some 5 weeks on.

I have now successfully got the data going into a file on my RPI. In order to get this info into lovelace I have tried iframe, but it isn’t dynamic and when the file changes it is not updating. I had forgotten I had posted this previously, so with regards to point 3 above I have now installed the custom-home-feed-card, but I am struggling to understand how I configure the card to pull in from /local/filename.txt. Can you point me in the right direction please?

Thanks