Spotter#7 is a little cardboard robot endlessly sweeps 180 looking for a friend. When it finds a friend, it stops and blinks to show that it has spotted the person. If the person moves away fast, it will continue with its path and keep sweeping. If the person remains for longer time and then moves, the robot will shake back and forth in disapproval. After the reaction, it will begin sweeping endlessly to find a friend.
The emotional response expected from this piece is compassion towards the little robot. The personal value of the piece was the challenge of designing the interaction. Originally, it was designed to use a temperature sensor to detect the interaction. Plans changed when the only sensor I had was damaged and I had to rework the piece. I decided to swap out the sensor for a photo-resistor. Even with the redesign, the piece is enjoyable.
This interactive piece is using a servo and a photo-resistor. It requires a spotlight to light the “friend”. Since the lighting is important with this piece, the photo-resistor can be set for either, back lit or front lit, to make it work correctly. The servo motor has a sweep from 0 to 180. The speed of the sweep is randomized after every completed rotation to break up the repetitions of the piece.