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Arduino Mega 2560 R3 - ATmega2560 Microcontroller Board for Complex Robotics

Arduino Mega 2560 R3 - ATmega2560 Microcontroller Board for Complex Robotics

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FeatureDetails
MicrocontrollerATmega2560 (8-bit AVR)
Digital I/O Pins54 (15 provide PWM output)
Analog Input Pins16
Operating Voltage5V DC
Input Voltage (Vin)7V to 12V DC (Limit 6-20V)
Flash Memory256 KB (8 KB used by bootloader)
Clock Speed16 MHz
Price
₹ 1,084.75 ₹ 1,084.75
(Tax included)

Product Description The Arduino Mega 2560 R3 is a powerful microcontroller board based on the ATmega2560, designed for projects that demand more I/O lines, more sketch memory, and more RAM. With 54 digital input/output pins and 16 analog inputs, it is the ideal choice for complex 3D printers, CNC machines, and multi-sensor robotic platforms. This R3 revision features a stronger RESET circuit and an ATmega16U2 instead of the 8U2 for faster USB-to-serial conversion, ensuring a stable and professional development experience.

Key Features

  • Massive I/O Count: Equipped with 54 digital pins, allowing you to control dozens of LEDs, sensors, and actuators simultaneously without needing multiplexers.

  • Expanded Memory: Features 256 KB of Flash memory, providing ample space for complex libraries and large firmware programs.

  • Four Hardware UARTs: Includes 4 dedicated hardware serial ports, perfect for communicating with GSM, GPS, Bluetooth, and Nextion displays all at once.

  • Enhanced Compatibility: Works seamlessly with most shields designed for the Arduino Uno, while providing the extra pins needed for advanced builds.

  • USB Overcurrent Protection: Features a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent.

Technical Details

  • Standard R3 Design: Includes added SDA and SCL pins next to the AREF pin and two new pins placed near the RESET pin for better shield compatibility.

  • Input Voltage Limits: Can be powered via the DC jack (7-12V) or the USB port (5V); absolute maximum input limit is 20V.

  • DC Current per I/O Pin: Supports up to 20mA per pin, sufficient for driving standard logic and small signaling LEDs.

  • High-Speed Clock: Driven by a 16 MHz crystal oscillator for reliable timing in time-sensitive applications.

  • Bootloader Pre-installed: Comes ready to program out of the box using the Arduino IDE via a standard USB Type-B cable.

  • Multiple Power Sources: Automatically selects the highest voltage source between USB and the external power jack.

  • ICSP Header: Provides direct access for SPI communication and for programming the microcontroller using an external ISP programmer.

  • Onboard LED: Includes a built-in LED connected to digital pin 13 for quick debugging and "Blink" tests.

  • Robust Connectivity: Features a sturdy USB Type-B connector, which is more durable for frequent plugging/unplugging compared to micro-USB.

  • Voltage Regulation: High-quality onboard voltage regulator ensures a stable 5V and 3.3V supply for external sensors.

  • SRAM Capacity: 8 KB of SRAM allows for large data arrays and complex calculations without memory overflow.

  • PWM Channels: 15 of the digital pins can be used as PWM outputs for precise motor speed or LED brightness control.

  • Analog Precision: 16 analog-to-digital converter (ADC) channels with 10-bit resolution for accurate sensor readings.

  • Standard Mounting Holes: Four M3 mounting holes for secure attachment to robot chassis or custom enclosures.

  • Open-Source Hardware: Fully compatible with a vast ecosystem of open-source libraries and community support.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: A 9V battery can power the Mega via the DC Jack for simple logic. However, if you are using many pins or a SIM900A GSM module, the battery will drain very quickly. Use a 12V 2A Power Adapter for stationary projects.

  • 18650 Cell: For mobile robots, use two 18650 cells in series (7.4V) connected to the VIN pin. This provides a great balance of voltage and high current capacity for both the Mega and your connected sensors.

  • IC & Capacitor Tip: If your Mega resets when a motor starts, add a 470uF Electrolytic Capacitor across the 5V and GND pins. To protect the Mega's pins from "Inductive Kickback" when using relays, always use a 1N4007 Diode across the relay coil.

  • Related Products: We recommend pairing this with our Arduino Mega Proto Shields, HC-SR04 Ultrasonic Sensors, and 20x4 I2C LCD Displays.

Package Includes

  • 1 x Arduino Mega 2560 R3 Board.

  • 1 x USB Type-B Programming Cable.

Disclaimer Image is for ilastration purpose only 2-3 lines. Ensure you select "Arduino Mega or Mega 2560" in the Arduino IDE before uploading code. Avoid drawing more than 200mA total across all I/O pins to prevent overheating the ATmega2560 chip.