The Arduino Mega is the powerhouse of the microcontroller-based Arduino line. With 54 digital I/O pins and 16 analog inputs, the Mega offers enough inputs and outputs to control even the biggest audio-visual projects (Yep, even concert light shows!). It also has four UARTs (compared to the Arduino Unoโ€™s one), so you can easily link up with multiple other devices and create something truly massive.