DFRobot DFR0003 DFRduino Mega1280 is a microcontroller board based on the ATmega1280 8-bit MCU. This microcontroller board features 54 digital input/output pins, 16 analog inputs, 4 UARTs (hardware serial ports), a 16MHz crystal oscillator, and a USB connection. The DFRduino Mega1280 also offers a power jack, an ICSP header, and a reset button. This board contains 128KB Flash space that allows it to completely replace the Arduino MEGA2560 in some of its intermediate and lightweight applications.