The Mega 2560 board has many amenities for communicating with a pc, A different board, or other microcontrollers. The ATmega2560 gives 4 hardware UARTs for TTL (5V) serial interaction. An ATmega16U2 (ATmega 8U2 on the revision 1 and revision two boards) on the board channels 1 of such more than https://mega2580246.blogpayz.com/27971928/the-5-second-trick-for-mega25