The Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x) or ATmega168 (Arduino Nano 2.x).
It 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.
Microcontroller: Atmel ATmega168 or ATmega328
Operating Voltage (logic level): 5 V
Input Voltage (recommended): 7-12 V
Input Voltage (limits): 6-20 V
Digital I/O Pins: 14 (of which 6 provide PWM output)
Analog Input Pins: 8
DC Current per I/O Pin: 40 mA
Flash Memory: 16 KB (ATmega168) or 32 KB (ATmega328)
SRAM: 1 KB (ATmega168) or 2 KB (ATmega328)
EEPROM: 512 bytes (ATmega168) or 1 KB (ATmega328)
Clock Speed: 16 MHz
Dimensions: 0.73" x 1.70"
Length: 45 mm
Width: 18 mm
Weigth: 5 g
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Great little boardBy: Andy Parker on 3 January 2017Started project with this board. Very easy to setup and use, extremely flexible. Only issue so far is getting the watchdog to work, still to resolve as it keeps the rst held high even if set to 8secs to allow for bootloader.