1 = User blows into straw 1 which is fed into Flow sensor 1 in order to mimic water being poured into the kettle.
2 = User blows into straw 2 which is fed into Flow sensor 2 in order to mimic water being poured out the kettle.
This prototype deliberately uses no water. This is because i did not want to risk the potential of water damaging the components while it is out on display for people to use.
Substituting Air for Water still allows the flow sensors to collect data and can be used to show that the LCD, buzzer and LEDs all function as they should.