Generally, once one has come up with plans for blinking LEDs that require more IO than is available on ... demo for the Arduino Mega 2560. For those unfamiliar, video on the Arduino is actually ...

While newer Arduinos and Arduino compatibles (including the Hackaday.io ... Mega, actually have two chips. An ATMega16u2 takes care of the USB connection, while the standard ‘328 or ‘2560 ...