Mega R3 ATMEGA2560 16U Board – Compatible with Arduino
Mega R3 ATMEGA2560 16U Board – 54 Digital I/O, 256KB Flash
The Mega R3 ATMEGA2560 16U board is a microcontroller development board based on the ATmega2560 chip, fully compatible with Arduino Mega 2560. It provides abundant I/O pins and memory for complex projects like 3D printers, robotics, and large-scale automation. The onboard ATmega16U2 USB-to-serial converter ensures reliable programming and communication.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller | ATmega2560 |
| Operating Voltage | 5V |
| Input Voltage (recommended) | 7-12V |
| Digital I/O Pins | 54 (15 PWM) |
| Analog Input Pins | 16 |
| Flash Memory | 256 KB (8 KB bootloader) |
What You Can Build With This
- Robotic arm with multiple servos and sensor feedback
- 3D printer or CNC machine controller (works with RAMPS 1.4)
- Home automation hub with touchscreen and wireless module
- LED matrix display or large-scale interactive art installation
Compatibility
This board uses the standard Arduino Mega pinout, making it compatible with all shields designed for the Mega 2560. It operates at 5V logic levels and can be powered via USB or an external 7-12V supply. Commonly paired with RAMPS 1.4 for 3D printing, sensor shields, and RS-485 modules for industrial communication.
Wiring Notes
For programming, connect via USB cable; the ATmega16U2 handles serial conversion. When using external power, ensure voltage stays within 7-12V to avoid damage. I2C devices connect to SDA (pin 20) and SCL (pin 21), and SPI uses pins 50-53.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with standard Arduino shields?
Yes, the Mega R3 uses the same pinout as the Arduino Mega 2560, so all standard Mega shields fit and work without modification.
Can I power it via USB for motor projects?
USB provides 5V, which may not supply enough current for motors. Use a 7-12V external supply for reliable operation with high-power loads.
How does this differ from Arduino Uno?
The Mega has 54 digital I/O pins, 16 analog inputs, and 256KB flash, compared to Uno's 14 digital, 6 analog, and 32KB flash. It's suited for larger, pin-intensive applications.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items