It would be fun to test however, and I think it wouldn’t be too hard to hit at least 115,200 bits per second coming in over serial and being pushed out over the parallel port with the current setup.

However, these two areas are where the Arduino Mega shines. It's built with 256 KB of flash memory and over 50 pins, perfect for managing larger and more demanding projects with multiple components.

Meanwhile, the Arduino Mega is getting the same USB chip along with an ATMega2560 processor with twice the memory. Right now only 128K is available, but that's a software limitation and they're ...