The four servos are controlled by an Arduino – each digit changing one at a time to reduce current consumption – and a magnet and reed switch was added to each digit so the numbers could be ...

Instead, Make shows you how to build an internet-connected alarm clock using an Arduino and Google. All you'll need is an Arduino Yúnm a touch screen, a USB speaker, and a few cables.

If you want to make your own, Instructables user Paranoid Legend shows you how to build one with an Arduino. The alarm clock is made using a Arduino Mini and a TFT screen.