SparkFun



SparkFun Electronics is an online electronics store, offering a wide selection of hobby electronics kits and components. They also host a forum and encourage community discussions and comments. SFE staff can regularly be seen responding to comments and forum posts, which gives the site a personal touch sorely lacking at other online retailers. Various how-to classes are hosted at their H.Q. in Boulder Colorado.

Products
Arduino- ''Pro, pro mini, Bluetooth, Stamp, Mega, FIO, Duemilanove, and 23 shields.  AVR- ''ATMega, ATTiny, XMEGA, USB, component chips, header boards, complete development kits.  PIC- ''PIC, PIC32, PICAxe, USB kits, programmers, development boards.  Sensors- ''1-2-3 axis accelerometer, 1-2-3 axis gyro, biometric, current, force, flex, RFID, IMU, infrared, light, cameras, compass, proximity, radiation, sound, temperature, weather.