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Item #:
244292469
ELEGOO UNO R3 Microcontroller Board ATmega+328P ATMEGA+16U2 with USB Cable
90% of respondents would recommend this to a friend
Item #:
244292469
XCD 71
Price Details
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Order now and get it around Friday, September 25
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100% compatible with the Arduino IDE and RoHS Compliant.
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What Stands Out
Arduino Compatibility
Designed for seamless integration with Arduino IDE projects, making it ideal for beginners and seasoned developers seeking a reliable platform for their projects.
Robust Performance
Equipped with ATmega328P, 16MHz clock speed, and 32KB flash memory, ensures efficient processing capabilities, enabling complex project execution without lag.
User-Friendly Design
Features 14 digital I/O pins for versatile connections, complemented by included USB cable, offering an intuitive experience for hobbyists and educators alike.
Product Details
| Package Weight | 1 Pound |
Product Technical Details
| Standing screen display size | 3 |
| RAM | 2 KB DDR3 |
| Wireless Type | Bluetooth |
| Brand | ELEGOO |
| Series | ELEGOO UNO R3 Board |
| Item model number | EL-CB-001 |
| Operating System | Windows 10 |
| Item Weight | 0.96 ounces |
| Product Dimensions | 3.15 x 2.36 x 0.39 inches |
| Item Dimensions LxWxH | 3.15 x 2.36 x 0.39 inches |
| Processor Brand | Atmel |
| Number of Processors | 1 |
| Computer Memory Type | 72-Pin EDO SIMM Memory |
| Manufacturer | ELEGOO |
What's in the box
1 UNO R3 Development Board, 1 USB cable
Who Should Buy?
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Beginner Programmers
Ideal for new programmers learning coding and hardware integration through Arduino IDE projects with step-by-step guidance.
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Hobbyist Projects
Perfect for electronics enthusiasts creating DIY projects requiring microcontroller capabilities, sensors, and connections.
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Educational Use
Recommended for teachers and students working on electronics courses, fostering learning through hands-on experience with microcontrollers.
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Advanced Applications
Not suitable for complex applications requiring higher processing power, more I/O pins, or greater memory than provided.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the ELEGOO UNO R3 Microcontroller Board?
Answer: The ELEGOO UNO R3 is a versatile microcontroller board based on the ATmega328P and ATMEGA16U2 chips. It features a USB interface for easy programming and includes a variety of digital and analog input/output pins, making it ideal for both beginners and advanced users. This board is widely used in educational settings, hobby projects, and prototyping. With its numerous support resources and community projects, users can easily find tutorials and codes to kickstart their electronics adventures. -
Question:
How do I set up the ELEGOO UNO R3 with a computer?
Answer: To set up the ELEGOO UNO R3 with a computer, you need to connect it via the provided USB cable. Download and install the Arduino IDE, which is the software used for programming the board. After installation, select the correct board model ('Arduino UNO') under the Tools menu, and choose the appropriate COM port. You’re now ready to upload your sketches and start programming various applications, ranging from simple LED blinks to complex robotics projects. -
Question:
What programming language do I use for the ELEGOO UNO R3?
Answer: The primary programming language used for the ELEGOO UNO R3 is C/C++. The board is programmed using the Arduino programming environment, which simplifies coding with a user-friendly interface. There are numerous libraries and built-in functions specifically designed for various sensors and modules, allowing users to focus on their project ideas without delving deeply into intricate code. This is particularly beneficial for new learners in electronics and robotics. -
Question:
What projects can I create with the ELEGOO UNO R3?
Answer: The ELEGOO UNO R3 is suitable for a wide range of projects, such as building a simple LED brightness controller, creating an automatic plant watering system, or even developing a basic robot. Hobbyists and students frequently use it in electronics and robot design. Furthermore, with various add-ons and shields compatible with the board, users can enhance project complexity and functionality, allowing for creative experimentation and learning. -
Question:
Is the ELEGOO UNO R3 compatible with Arduino shields?
Answer: Yes, the ELEGOO UNO R3 is fully compatible with most Arduino shields. This compatibility enables users to easily expand their project capabilities by stacking shields on top of the microcontroller board. Whether you're integrating sensors, motors, or additional connectivity features, simply attach the relevant shield and build upon your project. This flexibility is particularly advantageous when exploring new functionalities and applications. -
Question:
What accessories are included with the ELEGOO UNO R3?
Answer: The ELEGOO UNO R3 typically comes with essential accessories such as a USB cable, which is used for connecting the board to your computer for power and programming. Additionally, many packages may include a beginner's kit featuring a breadboard, jumper wires, and various electronic components to help kickstart your projects. These accessories allow users to instantly engage with their microcontroller board and experiment with different circuit designs. -
Question:
Can I use the ELEGOO UNO R3 for IoT projects?
Answer: Yes, while the ELEGOO UNO R3 itself doesn’t have built-in Wi-Fi or Bluetooth capabilities, it can be combined with additional modules such as the ESP8266 (for Wi-Fi) or HC-05 (for Bluetooth) to enable IoT functionality. These combinations allow users to create connected devices that can communicate over the internet or with smartphones. This versatility makes it an excellent choice for those wanting to explore Internet of Things applications. -
Question:
Is there a community or support for ELEGOO UNO R3 users?
Answer: Absolutely! The ELEGOO UNO R3 boasts a sizable and active community of users. Online forums, dedicated websites, and social media groups provide ample resources for troubleshooting, sharing project ideas, and collaborating. Additionally, ELEGOO provides detailed documentation, tutorials, and sample codes, making it simpler for users at any skill level to seek help and enhance their understanding of the microcontroller. -
Question:
What are the power requirements for the ELEGOO UNO R3?
Answer: The ELEGOO UNO R3 can be powered through the USB connection or via an external power adapter. It operates at a voltage of 5V, allowing it to function reliably with standard Arduino-compatible power supplies. This flexibility means you can use it in various environments, whether powered directly by a computer or a battery in portable projects. Understanding these power options can help you optimize your project’s design and functionality. -
Question:
Where can I buy the ELEGOO UNO R3 Microcontroller Board in Antigua and Barbuda?
Answer: You can purchase the ELEGOO UNO R3 Microcontroller Board ATmega+328P ATMEGA+16U2 with USB Cable from Ubuy. They offer a wide selection of electronic components and tools, making it convenient to find not only the ELEGOO board but also potential accessories for your projects. Ubuy is a reliable platform for all your tech needs in Antigua and Barbuda, ensuring a seamless shopping experience.
ELEGOO Single Board Computers EL-CB-001 Editorial Review
ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino is an excellent choice for both beginners and experienced engineers looking to run small scale engineering projects. Users have praised this board for its great connectivity with multiple ports and compatibility with various power supplies. Many have found it performs exceptionally well on Mac OS without issues or the need for cumbersome software updates. Some users did note that the supplied USB cable may be short for certain setups. Overall, the combination of price and performance makes the ELEGOO R3 Uno a fantastic option for anyone venturing into electronics or programming.
Customer Reviews & Ratings
5046 customers ratings
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5 Star
85%
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4 Star
10%
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3 Star
3%
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Pros
- Great for beginners and experienced users
- Excellent performance with Mac and other systems
- Compatible with popular Arduino libraries
- Solid build quality for various projects
- Affordable alternative to name brand boards
Cons
- USB cable may be shorter than expected
Platform Trust & Buyer Confidence
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Verified buyer
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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XCD 71
Order now and get it around Friday, September 25
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Features & Benefits
- Upgraded ELEGOO UNO R3 BOARD with improved chip for faster transfer rates.
- Clear prints on female header connector for precise usage.
- Uses ATMEL ATMEGA+328P chip, same as Arduino UNO R3.
- Enhanced customer experience with attention to product details.
- More memory for better performance.
- RoHS compliant, ensuring safe and environmentally friendly materials.
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