can someone tell me the difference between this ans an official arduino board?

The official board comes with a plastic tray that prevents shorts to the bottom of the board. The Elegoo board comes with a USB cable and is available in two colors. There is no functional difference. While the official board may be better quality, I've had no problems with any of the Elegoo boards I've bought.

how much servo motors can this handle? how is the shield compatibility?

You have to tie the card to servo drivers to handle motors. The board outputs can handle only a TTL load per pin (about 20 mA per line). I have used a similar card tied to a Sain Smart CNC Micro-Stepping Stepper Motor Driver to handle large stepper motors using up to 4.2 Amps of current: https://www.amazon.com/gp/product/B00DFSF9GE/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 I ran hookup wire from the Arduino board to the interface box(es). Sometimes I used a transistor buffer (per line) so that the 20 mA limit was not overloaded to drive two controllers for the Y-axis with full current capacity on each motor. The transistor I used was a BS270 400mA, 60V N-Channel Enhancement Mode FET. I got the transistor circuit understanding from the book, Exploring Beaglebone.

Is this the exact size as the original mega? i want to make a pcb shield for it on eagle, and will be using sparkfun's mega part footprint

I did exactly this, but with a footprint from Element14. My custom shield fits perfectly.

Are the digital outputs 3.3V or 5V?

This basically just like the Arduino Mega 2560, the digital pins are 5V as are the analog input pins. There is no version of this that is 3.3V. ATMega 2560 is a 5V chip. No need for level shifters or voltage dividers. There is one 3.3V voltage output pin, which is also typical of the Uno R3 and many other 5V Arduino/clones.

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ELEGOO MEGA R3 Board ATmega 2560 + USB Cable Compatible with Arduino IDE Projects RoHS Compliant

ELEGOO MEGA R3 Board ATmega 2560 + USB Cable Compatible with Arduino IDE Projects RoHS Compliant

Product ID: 271281741

Details

Brand
ELEGOO
CPU model
1.2GHz Cortex
Connectivity technology
Bluetooth
Memory storage capacity
256 KB
Model name
MEGA R3

⚡16 MHz clock speed

💾256 KB flash memory

🔌54 digital I/O pins with 15 PWM outputs

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495 kr

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Description

🚀 Elevate your maker game with ELEGOO MEGA R3 — where power meets precision!

READY OUT OF THE BOX - Includes USB cable and supports multiple power sources—start building your innovation immediately.
ROBUST POWER RESET CIRCUIT - Enhanced RESET circuit and versatile DC barrel jack for reliable power management.
MASSIVE I O MEMORY CAPACITY - 54 digital pins, 16 analog inputs, and 256 KB flash memory to handle complex, multitasking projects.
SEAMLESS ARDUINO IDE COMPATIBILITY - Plug-and-play with all Arduino mega R3 shields for instant project integration.
EXPANDED PINOUT FOR FUTURE PROOFING - New SDA, SCL, and IOREF pins ensure your shields adapt effortlessly to evolving voltage standards.

The ELEGOO MEGA R3 Board features an ATmega2560 microcontroller running at 16 MHz, offering 54 digital I/O pins (15 PWM), 16 analog inputs, and 256 KB flash memory. Fully compatible with Arduino IDE and most Arduino mega R3 shields, it includes enhanced pinouts for future voltage adaptability and a stronger reset circuit. RoHS compliant and bundled with a USB cable, this board is designed for professional-grade projects and rapid prototyping.

Specifications

ASIN	B01H4ZLZLQ
Best Sellers Rank	#25,198 in Computers ( See Top 100 in Computers ) #368 in Single-Board Computers
Brand	ELEGOO
Built-In Media	USB cable
CPU Model	1.2GHz Cortex A8 Processor
CPU model	1.2GHz Cortex A8 Processor
Compatible Devices	Devices with Arduino IDE and Arduino mega R3 shield support, as well as computers with USB ports
Connectivity Technology	Bluetooth
Connectivity technology	Bluetooth
Customer Reviews	4.7 out of 5 stars 2,031 Reviews
Global Trade Identification Number	00719377200400, 00746591610562
Included components	USB cable
Item Dimensions L x W x H	5.1L x 10.2W x 2.5H centimeters
Item Weight	64 g
Manufacturer	ELEGOO
Memory Storage Capacity	256 KB
Memory storage capacity	256 KB
Mfr Part Number	EL-CB-003
Model Name	MEGA R3
Model Number	EL-CB-003
Model name	MEGA R3
Operating System	Linux
Processor Brand	Microchip Technology
Processor Count	1
RAM Memory Technology	DDR3
Smart Home Compatibility	Not Smart Home Compatible
Total Usb Ports	4
UPC	719377200400 746591610562
Unit Count	1 Count
Wireless Compability	Bluetooth

Reviews

A**R

Arduino mega review

So good quality

7.10.2019

A**R

Great device.

I love these arduino MCU as they are reliable and fun to program for my Model Railroad.

9.04.2026

K**A

Product arrived in great condition and promptly

Very pleased with this product. Despite not being a branded Arduino, it is a great and very affordable substitute, and works exactly as required and is indistinguishable from Arduino Megas, despite being less than a third of the price. Came neatly arrived in a box and anti-static bag, so it would not be damaged in the delivery, and came with a USB cable that seems to function as required.

19.01.2021

C**A

Excelente, barato y funcional!

La verdad me asustaba un poco que el producto no llegase a funcionar con la plataforma de arduino o que estuviera hecho con mteriales de mala calidad, sin embargo me sorprendieron con la calidad del producto, llego antes del tiempo establecido y funciona de maravilla dentro de la plataforma.

17.02.2023

S**E

Good product

Works great no issues so far, it's been more than an year.

28.11.2024

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495 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Denmark.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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