ELEGOO MEGA R3 Controller Board ELEGOO MEGA R3 Controller Board Compatible with Arduino IDE with USB Cable Black Version ELEGOO MEGA R3 is an micro-controller board. It is designed for more complex projects. It would be an intelligent choice of board for 3D printers, robotics projects and more other projects with 54 digital I/O pins (of which 15 can be used as PWM outputs), 16 analog inputs and a larger space for your sketch. This gives your projects plenty of room and opportunities. Extra Points: Besides the 54 digital I/O pins and 16 analog inputs, it also has 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It provides everything needed to support the microcontroller.
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