I have my bathroom fan controlled by HA. I’d like to create an automation that will detect a humidity spike over a short period of time, that would indicate someone is taking a shower, etc. The room is naturally humid, so I’m not looking for a threshold to cross, but do something like take a running average and look for a spike.
Have you seen anything like this? Not sure what hardware to get. I use both Insteon and Zwave devices, but wouldn’t object to a getting a cheap standalone as long as it is actually decent at measuring humidity.