To start, you need to buy an Arduino. It comes pre-assembled or, for those handy with a soldering iron, in kit form. A fully assembled Diecimila board from the excellent Make costs just $35.

The Silicon Labs Si4735 is a single-chip solution for receiving AM, FM, and shortwave radio. With a bit of hacking, it even supports single sideband (SSB). All you’ve got to do is provide it … ...

[Blue Blade Fish] wanted to build an Arduino-based aquarium controller. He’s detailed the system in (so far) 14 videos and it looks solid. This isn’t just a simple controller, either.