Here’s a first: a fully-functional digital clock made with LEGO Mindstorms. Powered by two separate LEGO Mindstorms bricks communicating through Bluetooth, “each number has five layers and each layer is controlled by the one above it so it starts from the bottom and builds the number from the ground up.” Video after the break.

The master brick keeps track of the time and handles the minute digits. The slave brick handles the hour digits and the second indicator.

[via PC WorldTilted Twister]