The Defender

“The Defender” is a wearable designed to defend personal space. When the radar (infra-red distance sensor attached to a servo motor) on the goggles detects someone is getting too close (within a given radius), it triggers LEDs and fans that are strapped to both sides of the body. The front fans inflate an airbag, constructed from a laser-cut plastic bag. The bag is fabricated with lots of tiny holes which project the LED light, illuminating the person invading the space. The rear fans blow strips of foil away from the body, giving the appearance of tentacles and again amplifying a physical response to the interaction. The fans return to their original state when the personal space is cleared.

At the back of the wearable, we built a case containing an Arduino Uno, connected to the infrared sensor and the four fans.