During my third course, we had a client who requested us to make some- thing that attracts people to a festival. We made a box that opens on its own when it's approached, which reveals a poster and flyers to look at.
The functionality of the interactive box, was done with the use of Arduino. In this cousrse I was able to learn how to code an Arduno UNO to do anything I wanted it to do. As long as I had the input and output modules I needed. In this example, I used a supersonic sensor to measure the return time and convert this number to distance. When the use puts their hand at a certain distance, the servo motors will rotate to open the box and reveal the poster.