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My CO2 sensor has dramatically changed my routines. My space isn’t small - maybe 1200 square feet/100 sq m - but it must be pretty well sealed, because I can easily see my own breathing add to CO2. Nevermind cooking on the gas stove. Treadmill time adds 500+ ppm.
Now, I open windows every chance I get (which isn’t super often, because the dewpoint is 70 oF/20 oC in Atlanta), and I’ve shifted a lot of my cooking to an electric tea kettle, hot plate, and toaster oven.
If you’re trying to avoid a whole zigbee or zwave network, Govee makes some inexpensive battery-powered bluetooth thermometer/hygrometers, and have a HA integration, but bluetooth can be tricky to get running on Pis. I feel like most of the actual wifi devices are phone-home type setups. My govee thermometers have pretty good range - one of them even reads from inside the refrigerator.
The first kind of bankruptcy, Elon & his Saudi bros keep the company, and the banks lose like 50-90% of their loans.
The second kind of bankruptcy, the banks get all the servers and office chairs and sell them to either a new data-mining company or a recycler. This isn’t very likely, because most of the value of Xitter is all the people who keep visiting, regardless of whether Elon knows how to monetize them.
We really need a code of etiquette for them, though. Trip to the store this morning, and they were down to 3 self-check stations from usual 10 with literally a dozen people in line. Including one couple with a cart full of a week’s groceries and one lady trying to win coupon roulette. Four other people cycled through the third scanner while those two piddled away the day.
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.
Typical cat just knocking things off shelves - the library is an inexhaustible playground.