Hello,
I have MQTT sensors on my Home Assistant configuration. When I click the sensor tag, I see a chart of the sensor values over time. Can I disable this feature? It seems like it would wear the SD card out on my Raspberry PI.
Wear on SD cards only occurs on writes, which are going to happen whenever the sensor value changes, if you have the db enabled. Reading the data to display charts will have no effect on SD card life.
You can run HA without the DB enabled, which would save SD wear, but you would lose out on some features, such as sensor charts.
An alternative is to set the database to use a usb drive to store the data - there was a thread about doing that some time ago.
Oh ok, I’ll look into how to disable the db. I actually have a separate installation that uses InfluxDB and Grafana to do charts, and that’s running off hard drive. Maybe someday I’ll merge HA into that one, but using hass.io was the easiest way to get started.
Have a look at recorder and history component configuration.
Not sure but if recorder is disabled these graphs could be deactivated due to missing historical data.