You'll have a bit of control over what you choose for the motion sensor, motor, and jumper wires. You can pick up a pack of six SG90 motors from Amazon for a little under $12. A 10-pack of the HC ...

A Japanese designer known as FRP has created a smart bin with wheels that autonomously move to catch waste paper and other rubbish.. Using a Kinect-style 3D motion-tracking camera -- an Asus Xtion ...