Arduino Mega2560 R3 Compatible With the Latest Arduino Mega2560

With 70 I/O pins, 4 serial ports and 256K of program memory the Mega 2560 is the 'daddy' of the 8 bit Arduino world.

Arduino Mega2560 R3

Fully compatible with the Arduino Mega 2560 R3 boards.

** Please do not mistake this board as being the same as some cheaper Arduino Mega 2560 boards which are NOT the latest R3 model.

There are several new features the R3 sports over earlier models, the most important is the upgrade of the USB chip from an 8U2 to a 16U2.

The Sainsmart Arduino Mega 2560 development board shares all the new features of the genuine Arduino R3 such as the ATMega16U2 USB interface chip which, besides allowing you to load your code (called sketches) onto the board with blistering speed, also allows the board to appear to your PC as keyboard, mouse or similar device.

Detailed description of the Sainsmart Mega2560 R3:

Technical Details:

Microcontroller ATmega2560-16AU from Atmel.
USB Microcontroller ATmega16U2
Operating Voltage 5V
Input Voltage 7-12V (if using external power from adaptor or battery)
Digital I/O Pins 54  (of which 15 provide PWM output)
(PWM outputs are like analog outputs)
Analog Input Pins 16
USARTS (serial ports) 4
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 256 KB of which 8 KB used by bootloader (to store your programs)
EEPROM 4 KB (stores information even when turned off)
Clock Speed 16 MHz

Programming the SainSmart Arduino board is easy, there are hundreds of tutorials and thousands of examples online. YouTube is also an excellent source of information and inspiration.

The Mega 2560 R3 works with existing shields and can also use new shields which use these additional pins.

The Mega 2560 R3 also works with existing Mega 2560 and UNO sketches (programs).

Sainsmart Arduino is powered by the same USB connection from your PC that you use to program it (USB cable included).  Once your Arduino is programmed you can use as a standalone project disconnected from the PC by powering it from batteries or a power adaptor. (power supply and battery connector not included)

The Arduino open-source programming tools can be downloaded free from the Arduino web site ( and is available for Window, Mac OS X and Linux.

The Windows driver comes with the programming tools. Mac and Linux do not require a driver.

Advanced users can use the 'C' development tools to program this board directly (bypassing the Arduino IDE completely) using the ICSP interface. The 'C' development environment, called AVR Studio, is available as a free download directly from Atmel (

Package includes:

1 x Arduino Mega2560 R3 compatible board.

1 x 0.5m USB cable.

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