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Teyleten Robot Nano IO Expansion Shield Sensor Module for Arduino UNO R3 Nano 3pcs
Feature This breakout board is much better than using a breadboard - because all of the pins are available in triplets with the Gnd and VCC, making it convenient to connect sensors and outputs with DuPont wires or server cables (watch the polarity and pinouts). When you put an for Arduino Nano in the black socket and this board allows you to easily connect to the various I/O pins and power. It has a 2.1mm x 5.5mm socket to apply power (just like an for Arduino Uno) and a 3.3v regulator to suppliment the 5v regulator on the Nano. The unpopulated pads along the outer edge are the

Price is $6.00
Price: $5.99