Software that turns a Raspberry Pi computer into a time-lapse camera has won a contest for teenage programmers.

BBC: Time-lapse code wins Raspberry Pi contest

The late physicist Carl Sagan, in his novel Contact, imagined a time when Earth scientists were sufficiently able to unravel enough of pi to find encoded messages from our creators-messages that would allow our primitive race to leap into a greater universal awareness.

BBC: 3.14 and the rest

By the time Raspberry Pi celebrates its first anniversary at the end of February, more than a million will have been sold - an amazing achievement for what has been a shoestring operation dependent on voluntary efforts and the enthusiasm of the community.

BBC: The Pi Store opens