Rust based tracker of APsystems EZ1 microinverter via local API. See also: https://github.com/SonnenladenGmbH/APsystems-EZ1-API/blob/main/assets/apsystems-documentation/APsystems%20EZ1%20Local%20API%20-%20Documentation.pdf
I run the tracker on a rpi4 that then samples the microinverter API every five minutes to track the current output as well as produced daily and total energy. For the fun of it, I also query some solar irradiation values as well as the cloud cover near me via open meteo / DWD, see: https://open-meteo.com/en/docs/dwd-api
The result is written into a sqlite database which I then use to build a dashboard using obversablehq.