Original Arduino Nano Board (A000005)

1. Manufacturer: Arduino Officials
2. Operating Voltage (logic level): 5V
3. 8 analog inputs ports: A0 ~ A7
4. 14 Digital input / output ports: TX, RX, D2 ~ D13
5. 1 pair of TTL level serial transceiver ports RX / TX
6. Using Atmel Atmega328P-AU MCU
7. There is a bootloader installed in it
8. Standard 0.1” spacing DIP (breadboard friendly).
9. Manual reset switch.

This Arduino Nano is an Original Arduino Nano Board. It is a breadboard-friendly board based on the ATmega328P from Arduino officials made in Italy. It has more or less the same functionality as 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.

The original Arduino Nano is a surface mount breadboard embedded version with integrated USB. It is the smallest, most complete, and breadboard-friendly. It has everything that Diecimila/Duemilanove has (electrically) with more analog input pins and an onboard +5V AREF jumper. Physically, it is missing a power jack. The Nano automatically senses and switches to the higher potential source of power, there is no need for the power select jumper.

Nano’s got the breadboard ability of the Boarduino and the Mini+USB with a smaller footprint than either, so users have more breadboard space. It’s got a pin layout that works well with the Mini or the Basic Stamp (TX, RX, ATN, GND on one top, power and ground on the other). This new version 3.0 comes with ATMEGA328 which offers more programming and data memory space. It has two layers. That makes it easier to hack and more affordable.

You end up paying less with Nano than Mini and USB combined!