| I tend to roll my own with rp-picos for no good reason other than they're easy. 1) Wattmeter for a toy solar installation - broadcasts a UDP packet every few seconds, which I then record into a staging JSON log that gets ingested into DuckDB. 2) Little pico-w wifi temperature sensor that feeds into the raspberry pi zero that controls my boiler. Thread about the boiler: https://hachyderm.io/deck/@dave_andersen/111579107766689328 github with some really crappy rust code: https://github.com/dave-andersen/boiler The boiler control is the fun one but it's not entirely embedded stuff. Runs a little control loop that turns down the boiler modulation based upon the difference between target and current temperature. Improves operating efficiency by a fair bit and reduces temperature swings. Makes me wish residential HVAC systems were more sophisticated - these are things any good industrial control system can do. 3) Made an "ok to wake" light for my son -- added a controllable LED strip to his clock with a pico-w in it that changes from orange to multicolored at 6:30am as a non-intrusive "yes, you can come bug your parents" signal.) https://hachyderm.io/deck/@dave_andersen/112091315519210298 |