On: Mist Showers: Sustainable Decadence? (2019)

[samus]

This sounds almost feasible if one feels comfortable to install a flow meter and a thermometer into the tap, and to hook it up with a microcontroller. Setting a certain temperature requires more work. I wonder whether there are products on the market for this already.

[Ididntdothis → samus]

My parents used to have one with a mechanical thermostat. It was pretty simple and worked well once you had figured out your target temperature.