The DFRobot Mega 2560 V3.0 is a fully compatible Arduino Mega 2560 R3 microcontroller board based on the ATmega2560. It features 54 digital I/O pins (14 with PWM), 16 analog inputs, 4 hardware serial ports, and a 16 MHz crystal oscillator. Connect via USB or power with a 7–12 V adapter or battery to get started.

Colour-coded headers make wiring easier: red for power, blue for analog I/O, and green for digital I/O — matching DFRobot's sensor colour scheme for quick identification.

Key Features

• Arduino Mega 2560 R3 Compatible – Works with the Arduino IDE and standard Mega shields
• ATmega2560 Microcontroller – 256 KB flash, 8 KB SRAM, 4 KB EEPROM
• 54 Digital I/O Pins – 14 with PWM output
• 16 Analog Inputs – For reading sensors and analog signals
• 4 Hardware Serial Ports – UARTs for multi-device communication
• Colour-Coded Headers – Red (power), blue (analog), green (digital) for easy wiring
• SDA/SCL Pins – Dedicated I2C pins near AREF, plus IOREF pin for voltage adaptation
• ATmega16U2 USB Interface – Improved over the older ATmega8U2
• Quartz Crystal Oscillator – Better timer and serial accuracy than ceramic resonators

Specifications

• Microcontroller – ATmega2560
• Operating Voltage – 5 V
• Input Voltage – 7–12 V (recommended)
• DC Current per I/O Pin – 40 mA
• DC Current for 3.3 V Pin – 50 mA
• Flash Memory – 256 KB (8 KB used by bootloader)
• SRAM – 8 KB
• EEPROM – 4 KB
• Clock Speed – 16 MHz

Package Contents

• 1× DFRduino Mega 2560 V3.0

Resources

• Schematic (PDF)
• Board Layout (PDF)
• Arduino Mega 2560 – Official Page
• Arduino IDE
• Arduino Language Reference