Introduction: Blow Answering Machine With Makey-makey
The idea is to get a feedback from the students when leaving the room after the class WITHOUT touching anything, just blowing in the direction of the answer.
Step 1: Elements and Connections
The basic material to be used are 2 straws, 2 aluminium foils cut in lines and 2 small surfaces of aluminium to make the contact
The straws and their aluminium will connect to earth (GND)
The 2 surfaces of aluminium will be the 2 possible answers and will be connected to 2 different pins (arrow left and arrow right)
We also need a peper-carboard to attach all the components (this will be like an interactive poster but activated by wind)