Expansion Shield for Arduino Nano v3.0
To make prototyping with an Arduino Nano much easier and faster, order the Expansion Shield for Arduino Nano v3.0 from PMD Way.
Your Nano will drop right in, and the shield offers full access to all the pins - and has them neatly arranged in a triple 5V - signal - GND format.
Futhermore the serial, I2C and 3.3V are also brought out onto the right-hand side of the shield - and matching PCB pads are connected to all pins so you can solder directly to the shield if need be.
Finally, you can power your project using an external DC power supply of 7~12V DC thanks to the onboard DC socket and voltage regulator.