I couldn’t find any zigbee battery powered flow sensors

Would it get triggered for… other clapping-like sounds?

I … Didn’t think of that. I don’t have a lever shower but placing a simple button inside the niche for toiletries is such a simple solution. I’ll look for some IP67 buttons.

This is perfect, but I’m not in the US :( I’ll see if I can get it imported.

I already have a presence sensor (Tuya) in my bathroom. Maybe I can use that + humidity sensor, everyone is saying it’s faster than you expect so I’ll give it a shot.

That’s a fallback option, but I try to automate my home whenever I can and not perform manual tasks. I know my groggy morning self is forgetting to even hit this simple switch.

Microphone is certainly an interesting choice I hadn’t thought of before at all. It’s something I can test easily, I’ll have to see how well it plays with music too. I’ll give it a shot

Good ideas, let’s see

motion sensor on top of your shower

That’ll detect my shower area motion not when shower in on. When I am cleaning the shower or sitting in a bathtub I don’t want mood lighting or other automations to be triggered.

trying to detect the vibration of the water flow

Vibration sensor can work but it’s a ceiling shower so I’ll have to see if I have enough space. This is the closest to a viable solution given my situation.

a simple switch that you hit before you get into the shower

Yeah that’s a fallback option, but I try to automate my home whenever I can and not perform manual tasks. I know my groggy morning self is forgetting to even hit this simple switch.

That kind of blows, I’m blessed with an ISP who doesn’t discriminate against power users and I get it gor relatively cheap (~$15 per month)

Can you not buy a static IP address from them? It’s inexpensive