I can see that. Most of my house gets enough light - or streetlights at night - to walk through with the lights out at midnight. Add in a lumen sensor, though, to dial lights up when it’s cloudy and down when it’s sunny…

When I think of automations, it’s either things like coordinating big power draws to cheap electricity or trivial quality of life enhancements, like turning out the lights in an empty room. The latter, I have trouble justifying to spend on occupancy sensors and smart switches if it’s only going to save 20 Watts of LED or five steps. Once it’s become your hobby, it’s much easier to say, “I’m going to buy these sensors because they’re fun to play with and it gives me joy to see them work.”

I didn’t think I was. I got sucked in by sensors to monitor indoor temp, humidity, air quality… A smart switch to turn lights on and off when I’m not home. Now I’m thinking of how to turn the HVAC fan off when IAQ is good and temperature is comfortable. I’m not ready to have the house turn lights on when I enter a room or start the oven when I get within a mile of the end of my commute, but it’s been growing, one $30 gadget at a time with no subscriptions and no data leaving my LAN.

I pulled the latest HA version based on you comment in this old thread, and you’re right! There is a restart button now. Thanks.

Collecting and comparing environmental data was the whole reason I started homeassistant. I mostly use indoor sensors and compare with national weather service for outdoor, but I like seeing the data. Graphs of indoor/outdoor, next to https://cdn.star.nesdis.noaa.gov/GOES16/ABI/SECTOR/se/GEOCOLOR/600x600.jpg (which updates every 5 minutes) I live in the US Southeast, and the indoor/outdoor comparison, especially dewpoint, lets me know when it’s ok to open windows overnight. i.e.: the overnight temperature usually drops below the A/C set point, but if that’s going to draw in a bunch of humid air, it may feel more comfortable to keep the warmer, drier air. Actual, local outdoor conditions would be even better, because we do get localized summer showers that really raise the humidity in very small areas, and the NWS data comes from an airport 5 miles away.

I’d love to have some motorized windows, or even blinds, for automation. Absent that, there’s nothing super obvious to me to trigger off environmental data.

I have HA running in docker on a Pi 3 and Z-wave JS running in another on the same Pi. Added a purpleair integration for outdoor air quality, national weather service, some local sensors, and sql to get data from another node. People have made me paranoid about SD card failures, so I regularly image it to my main server. I mostly use HA to visualize environmental data, but it also runs the lights in a hydroponic farm and the house during vacations, via z-wave outlets. Have not tried to integrate it with google or amazon.

The only inconveniences I’ve found with docker is that you can’t restart HA from its web interface and, if you update regularly, old images quickly fill a smaller card, so you have to remember to purge.