Details

The Arduino Nano 3.0 is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x. It has almost all the analog and digital pins that the UNO or Duemilanove has and  has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.

Technical details

-          Microcontroller                                                 Atmel ATmega328

-          Operating voltage (logic level)                          5V

-          Input voltage                                                    7 - 12V

-          Input voltage (limit)                                          6 - 20V

-          Digital I/O pins                                                 14 (6 PWM)

-          Analog input pins                                             8

-          DC current per I/O pin                                      40mA

-          Flash memory                                                   32 KB (ATmega328) of which 2 KB used by bootloader

-          SRAM                                                                 2 KB (ATmega328)

-          Clock speed                                                      16MHz

-          Dimensions                                                       0.73" x 1.70"

-          Length                                                               45mm

-          Width                                                                 18mm