Arduino based smart shower

One day, I woke up really early in the morning and, as I am use to, I went outside to turn on the shower boiler and wait 10 minutes.

This way is how I started thinking about a smart system controlled via bluetooth which can turn on the boiler until the exact temperature (previously set by user), within the time set by the user and with a feedback of the usage of water.

It works by putting a temperature sensor in the boiler and programing it with little treshold in the range of heat. Putting a flow sensor in the pipe of the shower allows you to know the usage of water in the whole time and using a valve conbined with a series of alarms that notify the exact time you are spending in the shower and time remaining via LCD screen.

You can ever turn off the program and use your shower in the traditional way.