Use Multiple Serial Ports on the Arduino Mega | Arduino Documentation
MEGA2560 MEGA 2560 R3 ATmega2560-16AU CH340G AVR USB board Development board MEGA2560 for arduino - AliExpress
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MEGA 2560 R3 Board ATmega2560-16AU CH340G for Arduino w/ Free USB cable | eBay
Amazon.com: 3D Printer Controller Board Mega 2560 R3 ATmega2560-16AU+ATMEGA16U2-MU chipset Control Board for Arduino Mega Development Board : Electronics
Arduino Mega 2560 R3 by Arduino :: Wayne and Layne Store
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ATmega2560 | embeddist
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A000067 - Arduino - Single Board Computer, Arduino Mega 2560, ATmega2560
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Oku Electronics - Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs,
MEGA 2560 R3 Board Atmega2560 CH340G + USB Cable – MONDUINO