His binary clock uses an Arduino Duemilanove (which fits perfectly in the tin) to keep time and control the indicator LEDs.

Alarm clocks are cheap and abundant, but they’re pretty boring. If you want to make your own, Instructables user Paranoid Legend shows you how to build one with an Arduino.

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.

Kothe has provided the necessary code, which you can upload to your microcontroller using the Arduino IDE. 4. Final Assembly: After programming, you can complete the final assembly of your clock.

The clock has three modes: 30-minute sunrise, analog time display, and a seconds counter that uses the full RGB range of the LEDs to light up one for each passing second.

The Ramos clocks designed by Paul Sammut require a snoozer to get out of bed and enter a code on a number pad located in another room to silence the alarm buzzer.