Using a a projector system and a cardboard box, Ben Purdy created a Minecraft box that actually reacts to being mined.
There’s a piezo element taped to the box and hooked up to an arduino. The arduino senses the physical impact with the piezo element and sends serial data to my PC. Processing picks up the serial signal and takes care of the projection and interaction (particles, etc).
Hit the jump to check out a series of videos showing the box in action.
(via Hack a Day)