Arduino is all about the community, right? The shear volume of material published online about the Arduino platform, mostly voluntary and all free, is simply staggering. We have drawn deeply from the contributions of the community in writing this book. The following sections include some of the web sites that are useful for online discussions, additional tutorials, and other reference sources.
Adafruit Industries (
http://forums.adafruit.com): Microcontrollers, Adafruit products, Arduino, and laser cutting
AVR Freaks (
www.avrfreaks.net/phorum): Programming AVR microcontrollers, using GCC, AVR tutorials
http://forum.bildr.org): Tutorial discussion, hardware and software help
DIY Drones (