The mechanical bit is quite simple. The clock functions in a similar fashion to a stepper motor, in the sense that you charge an electric coil to get the mechanical bit to move forward a precise amount. In this case, each firing moves the second hand one second position forward (and makes the familiar tick noise). To ‘fire’ the electric coil, you simply put a voltage across it. The only complicated bit is that you actually have to reverse this voltage to advance the clock to the next step.

BakerTweet is a way for busy bakers to tell the world that something hot and fresh has just come out of the oven. It's as simple as turning the dial and hitting the button. All of the baker's followers get a Twitter alert to tell them that it's bun-time. Or bread time. Or whatever. Cooooool.

HAPPE

A do-it-yourself GPS receiver