A team of students at the University of North Carolina in Charlotte have been working with a Raspberry Pi in their recycling initiative. They have created a three-and-a-half feet tall robot (called RecycleBot… I would have called it ‘Bob’) that patrols their football stadium and contains two bins – one for recycling, the other for compost. It has an ultrasonic sensor fitted to prevent collisions! You can read and hear more about their project over on WFAE.org.