The Mega 2560 board has several facilities for speaking with a pc, A further board, or other microcontrollers. The ATmega2560 supplies four components UARTs for TTL (5V) serial conversation. An ATmega16U2 (ATmega 8U2 over the revision one and revision 2 boards) on the board channels just one of these over USB and presents a Digital com port to appl… Read More