Arduino Mega 2560 Rev3 microcontroller board with pinout diagram and USB port
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3 microcontroller board with pinout diagram and USB port
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3
Arduino Mega 2560 Rev3

Arduino Mega 2560 Rev3

Main boards & Kits
ARD050
Part.No: A000067
€59.90
Upon Request
Delivered within 2-3 days

The Arduino Mega 2560 Rev3 is the board for projects that need space — 54 digital I/O, 16 analog inputs, 4× UART, and 256KB Flash, all in 5V logic with full UNO shield compatibility. The #1 board for 3D printers, CNC machines, and multi-sensor projects.

  • 🔌 54 digital I/O (15 PWM) + 16 analog inputs — most pins on a 5V Arduino
  • 💾 ATmega2560 @ 16MHz, 256KB Flash, 8KB SRAM, 4KB EEPROM
  • 📡 4× UART, I2C, SPI — for multi-device communication
  • 🇨🇾 Fast shipping within Cyprus

 

Arduino Mega 2560 Rev3 — 54 I/O Pins, 5V Logic, for the Biggest Projects

The Arduino Mega 2560 Rev3 (SKU: A000067) is Arduino's answer when the UNO simply doesn't have enough pins. With 54 digital I/O (15 PWM), 16 analog inputs, 4 independent UART serial ports, and 256KB Flash, the Mega 2560 is the reference board for 3D printers (Marlin firmware), CNC machines, home automation controllers, and any project that requires many peripherals running simultaneously. It operates at 5V — full compatibility with UNO shields, sensors, and modules without any level shifter.

Technical Specifications

Feature Specification
Microcontroller ATmega2560 (8-bit AVR)
Clock Speed 16 MHz
Flash / SRAM / EEPROM 256 kB (8kB bootloader) / 8 kB / 4 kB
Operating Voltage 5V
Input Voltage (VIN) 7–12V (recommended) / 6–20V (limit)
Digital I/O Pins 54 (15 PWM)
Analog Input Pins 16
DC Current per I/O / 3.3V Pin 20 mA / 50 mA
Communication 4× UART, I2C, SPI
USB USB-B (via ATmega16U2)
Dimensions / Weight 101.52mm × 53.3mm / 37g

Mega 2560 vs UNO Rev3 vs Arduino Due — Which one should I choose?

Mega 2560 UNO Rev3 Arduino Due
MCU ATmega2560 ATmega328P ARM Cortex-M3
Speed 16 MHz 16 MHz 84 MHz
Digital I/O 54 14 54
Flash 256 kB 32 kB 512 kB
I/O Voltage 5V ✓ 5V ✓ 3.3V ⚠️
UART 4× 1× 4×
Best for 3D printing, CNC, multi-sensor Learning, general use Audio, DSP, 32-bit

Who is it for?

  • Makers & 3D printing enthusiasts: The Arduino Mega 2560 is the heartbeat of the most popular 3D printers — it runs Marlin firmware and is used with RAMPS 1.4 shields for full control of stepper motors, heated beds, extruders, and sensors. If you're building or upgrading a 3D printer, the Mega 2560 is your first choice.
  • Students: Same language and IDE as the UNO — your code transfers instantly. Ideal for complex robotics, automation, and data logging projects that need many sensors and actuators running simultaneously. Easily connects with sensors and displays.
  • Educational institutions: 5V logic means full compatibility with all existing UNO equipment — upgrade without the cost of replacing sensors and shields. Ideal for advanced STEM labs.

See Also

Frequently Asked Questions

What is the difference between Arduino Mega 2560 and Arduino Due?
The Mega 2560 (ATmega2560, 8-bit, 16MHz, 5V) is the pin-rich extension of the UNO — full compatibility with 5V sensors and shields, ideal for 3D printing and CNC. The Due (ARM Cortex-M3, 32-bit, 84MHz, 3.3V) is much faster with more memory, but the 3.3V I/O requires attention for compatibility. If you're running Marlin or RAMPS, choose the Mega 2560.

Are UNO shields compatible with the Arduino Mega 2560?
Yes — the first pins of the Mega 2560 (D0–D13 and A0–A5) match the UNO pinout, so most UNO shields work normally. Additionally, dedicated Mega shields (RAMPS, motor shields) take full advantage of the extra pins.

What firmware does the Arduino Mega 2560 run in 3D printers?
The most widely used firmware for 3D printers with the Arduino Mega is Marlin (open-source), which uses the Mega together with a RAMPS 1.4 shield. It supports temperature control, stepper motors, heated bed, auto-levelling, and many other features found in modern 3D printers.

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