FYI, I use Arduino pretty heavily for control of various items (cameras, alarm, light panel, focuser, etc.) and while so far I’ve only just completed the automation of the ASCOM focuser driver, most of the other items can be controlled by the generic ASCOM switch function. My primary goal at the moment, however, is to get my roll-off control working over Wi-Fi and get an ASCOM driver for that!
On the subject of weather stations, I was surprised/disappointed to see that the support there is limited. I’d have expected to see something for my Davis weather station and/or the Cumulus control I’m using for it. Guess I’ll have to write that myself too!