These two open hardware projects are great for learning embedded programming, and they take two different but complementary approaches. The Arduino project is both hardware and software: tiny low-power single-board computers that are programmed using the Arduino IDE (integrated development environment). The Arduino programming language is based on Wiring and Processing, which were developed as teaching tools, and to program microcontrollers. Arduino is especially good for learning the fundamentals of electronics principles and hardware. The BeagleBoard is more powerful and supports any ARM-capable operating system such as Debian Linux, Ubuntu, Fedora, Gentoo, or Android.