Windows/Mac/Linux: Programming an Arduino isn't especially difficult, but if you're looking for a more visual method, Scratch for Arduino (S4A) uses MIT's Scratch as a groundwork for teaching kids ...

Building radio receivers from scratch is still a popular project since it can be done largely with off-the-shelf discrete components and a wire long enough for the bands that the radio will ...

The Scratch Duino programming is based on the Arduino platform and comes supplied with a variety of magnetic mounted sensors that can be installed and removed with ease.