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.
The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU (datasheet). It is the first Arduino board based on a 32-bit ARM core microcontroller. It has 54 digital input/output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), a 84 MHz clock, an USB OTG capable connection, 2 DAC (digital to analog), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button.
The Arduino Leonardo is a microcontroller board based on the ATmega32u4. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button.
The Arduino Micro is a microcontroller board based on the ATmega32u4 (datasheet), developed in conjunction with Adafruit. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard.
The ATTiny45 and 85 are a couple of really cool little MCUs but did you know you can program them in Arduino? That's right, now you can shrink your Arduino projects down to "tiny size" by moving your code straight over to these small but capable ICs.
The "Eleven" is just like an Arduino Uno – but better!
It is based on the existing Arduino Uno but with improvements and updates for ease of use, cost and getting started. It's 100% Arduino compatible. Also included in the package are a USB cable, and our Getting Started guide sheet.
Two tastes that taste great together: Arduino and Ethernet. But until now the only way to connect an Arduino to the Internet via a LAN was to add an Ethernet Shield. Wouldn't it be great if there was an Arduino-compatible board with on-board Ethernet?
zOMG! This kit has it all. It now includes the new Arduino Uno, the fabled baseplate, and all the sensors you can shake a stick at. The SparkFun Inventor's Kit for Arduino is a box of goodies to get the very beginner started with programmable electronics.