ARDUINO MEGA 2560 REV3 [A000067] Arduino Mega 2560 is designed for your most ambitious projects which require additional pins and extra memory Based on the 8-bit AVR microcontroller ATmega2560, it has 54 digital I/O pins, 16 analog inputs and a larger space for your sketches Ideal for: 3D printing, CNC robotics Compatible with most shields designed for the Arduino Uno Arduino is an open-source hardware, software, and content platform with a worldwide community of over 30 million active users.