Introduction to the Arduino platform
What is Arduino?
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.
Useful links:
-Main Arduino Site
-Make Magazine's growing Arduiono Archives
-The World Famous Index of Arduino & Freeduino Knowledge
-Arduino's programming platform: Wiring