Arduino Mega2560 Rev3 Original Chips

MADE IN CHINA
The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila.

Summary
Microcontroller: ATmega2560
Operating Voltage: 5V
Input Voltage (recommended): 7-12V
Input Voltage (limits): 6-20V
Digital I/O Pins: 54 (of which 15 provide PWM output)
Analog Input Pins: 16
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
SRAM: 8 KB
EEPROM: 4 KB
Clock Speed: 16 MHz
Why Choose This Arduino Mega 2560?
Built with genuine ATmega2560 and MEGA16U2 chips, specially manufactured for RAM Electronics — not a generic, unbranded clone.
54 digital I/O pins, 16 analog inputs, and 4 hardware UARTs — far more I/O and serial headroom than the Arduino UNO R3, for projects that outgrow a smaller board.
256KB of flash memory (8× the UNO’s 32KB) and 8KB of SRAM, giving much more room for larger sketches and more complex logic.
Common Uses for the Arduino Mega 2560
3D printer control boards — the Mega 2560 is the standard base for RAMPS-based RepRap printers (Prusa i3 and similar designs).
CNC machines and multi-axis motion-control projects needing several stepper drivers at once.
Complex robotics projects with many sensors and actuators that exceed the UNO’s 20 I/O pins.
Projects needing multiple simultaneous serial devices (GPS, Bluetooth, GSM modules) thanks to the 4 hardware UARTs.
Large or memory-heavy sketches that wouldn’t fit in the UNO’s 32KB of flash.
Frequently Asked Questions
Is this an official Arduino board or a clone?
It’s manufactured specially for RAM Electronics with genuine ATmega2560 and MEGA16U2 chips — not an official Arduino-branded board, but built with original components rather than the lower-quality chips found in many generic clones.

What’s the main difference between the Arduino Mega 2560 and the Arduino UNO?
The Mega 2560 offers far more I/O — 54 digital pins and 16 analog inputs versus the UNO’s 14 and 6 — plus 4 hardware serial ports instead of 1, and 8× the flash memory. It’s built for projects that need more pins, more serial connections, or more program storage.

Can I use RAMPS 1.4 or similar 3D-printer shields with this board?
Yes — the Mega 2560 is the standard controller board for RAMPS-based RepRap 3D printers, including RAM’s own RAMPS 1.4 and RAMPS 1.6 R6 shields.

Do standard Arduino shields work with this board?
Most shields designed for the Arduino Duemilanove or Diecimila pinout are compatible, though some UNO-specific shields may need adjustment given the Mega’s larger board size and additional pins.

Need more I/O pins, serial ports, or program memory than the Arduino UNO offers? Shop the Arduino Mega2560 Rev3 at RAM Electronics — built with genuine ATmega2560 and MEGA16U2 chips for robotics, 3D printing, and complex multi-sensor projects.