Arduino Due R3 Compatible Board — ARM Cortex-M3, 84MHzArduino Due R3 Compatible Board ARM Cortex M3, 84MHz The Arduino Due R3 compatible board is powered by the Atmel SAM3X8E ARM Cortex M3 processor running at 84MHz the most powerful board in the classic Arduino lineup. With 54 digital I O pins, 12 PWM outputs, 12 bit DAC, and 512KB flash, it is ideal for demanding applications requiring high processing speed, large memory, and advanced peripherals. Fully compatible with the Arduino IDE. Key