While Arduino Nano is a breadboard friendly version of Arduino UNO with more or less the same features, Arduino Mega is completely a different board. The answer to this is the Arduino Mega Board. Since the introduction of Arduino UNO as a quick prototyping board, there has always been a demand for more features than what Arduino UNO can offer. Communication Interfaces on Arduino Mega.What are the Input and Output Pins of Arduino Mega?.What are Different Memories of Arduino Mega?.Technical Specifications of Arduino Mega.