Arduino Mega Smd R3

The Mega 2560 is the board you move to when the Uno runs out of pins or memory. It offers 54 digital I/O, 16 analogue inputs and eight times the flash of an Uno, plus four separate hardware serial ports instead of one. That last point matters more than most people expect: GPS, GSM and Bluetooth modules can all run simultaneously on real UARTs instead of fighting over SoftwareSerial. The standard choice for 3D printer controllers, large LED displays and any build with many sensors. Four hardware serial ports for multiple communication modules at once; 256 KB flash for large programs and libraries; Accepts Uno shields plus Mega-specific shields; Runs Marlin and other 3D printer firmware.