Hi everyone!
(OS: HassOS 4.17, supervisor: 2020.11.0; running on RPi4 with official power source)
I have had a BME280 working really well for several months, pushing humidity, temperature and pressure to Lovelace without a problem. Brilliant!
I woke a few days ago to find it is now missing from the system. I now see “Entity not available: sensor.bme280_sensor_pressure” (and the same for temp and humidity), and there is no sign of them to (re)add as an entity. It’s like HA suddenly is unable to see them.
In my configuration.yaml file I have
sensor:
- platform: bme280
which was working fine (apologies for the incorrect formatting here but it worked).
I’ve tried to find the i2c address to see if that has changed, but can’t seem to find it as ssh is rejected, raspfi-config isn’t available and I can’t install i2c-tools via the HA terminal.
Nothing new in terms of hardware has been added, and the only recent software addition has been a google drive backup for snapshots and system monitor cards in Lovelace.
I’ve removed and re-added the BME280 lines in the config file, with no result. The wiring has not been touched and looks good- the RPi sits on a table and isn’t moved. Can’t see anything relevant in the logs (but I’m a hobbyist not a professional!) And I’ve turned it off and on again several times.
I was wondering if rolling back to an earlier snapshot but as I don’t know what’s wrong, I don’t know if that would help. So I’m out of ideas. Does anyone have any thoughts?
Thanks for your time 
Paul.