Arduino Uno Rev.3 (original)

The Arduino Uno is a microcontroller board based on the ATmega328. The board offers full support for the microcontroller and can be easily connected to a computer (USB) or power adapter, after which you can get started right away.The Uno is equipped with an ATmega16U2 (ATmega8U2 up to version R2) which is programmed as a USB/serial converter. An improvement over its predecessors featuring FTDI's USB/serial driver.Characteristics:Digital I/O pins: 14 (of which 6 can be used as PWM output)Analog Inputs: 6Contents: 16MHz clock crystal, UBS connector, power connector, ICSP header and reset buttonPower supply specifications:6V - 20V max. (adapter not included)Microcontroller: ATmega328Digital I/O pins: 14 (of which 6 can be used as PWM output)DC current per I/O pin: 40mADC current per 3.3V pin: 50mAAnalog Inputs: 6Flash memory: 32 KB (ATmega328) of which 0.5KB for the bootloaderSRAM: 2kB (ATmega328)EEPROM: 1kB (ATmega328)Clock Speed: 16MHz