Arduino fans, this project turns TVs on when you want them off. It makes a perfect April Fools' Day joke or gag gift—or, in the spirit of Evil Week , ...

Because some hardware setup is required to build up a functioning radio, an Arduino can be used to supply the voltage and control the radio chip. The 3.3-V power can be taken from the Arduino’s ...

Want to make your costume more legit? Try this DIY Arduino voice changer by Adafruit that lets you add custom voices and sound effects, and even includes a keypad for you to control them.

At about $30, the Arduino isn't an expensive device, but if you want to make your own, simpler version, electronics blog Hardware Startup shows off how to build an Arduino clone for less than $5.