Enter the ExtraCore library for Arduino, a software library that turns two or more Arduinos into a multi-core microcontroller with more pins than you’ll ever need. The ExtraCore library comes ...

[Rafael] just made a little library that allows you to interface these modules to the Atmega328p-based Arduino UNO in order ... the Arduino platform. The 30-pin SIMM shown above is capable ...

The Uno also has a limited number of pins, making it difficult to work with when the project requires plenty of input and output components. However, these two areas are where the Arduino Mega shines.