A mini wearable device project implemented with Raspberry Pi that integrates a number of sensors and actuators to track simple biometrics such as pulse and body temperature. Actuators can either alert the user (red blinking LED) or cool the user down (actuate a 'fan' with a DC motor) if overheating occurs. A green LED light blinks with every pulse, letting the user know he/she is still alive.
To see a video of it in action, see here: http://bit.ly/BiosensorsProject