Sometimes the most mundane products have surprisingly sophisticated internals. What’s in a game controller? If it is a Wii remote, you’ll find a lot inside–an IR sensor, Bluetooth, an accelerometer, ...

Now you can sit back and mow your lawn with a Wii remote controller. Researchers in Denmark call it the Casmobot. It's pretty basic: Tilt the remote forward, the mower drives forward. Tilt it back, ...