ELEGOO, founded in 2011, is a leading open-source hardware company dedicated to making electronics and programming accessible for everyone—from beginners to professionals.
The ELEGOO UNO R3 is a reliable and beginner-friendly development board based on the ATmega328P microcontroller. It features 14 digital I/O pins (including 6 PWM outputs), 8 analog inputs, 32KB of flash memory, and a 16MHz clock speed. The board also includes RX and TX LEDs for USB communication and additional pins (IOREF and a reserved pin) to support compatibility with current and future shields.
The package includes one UNO R3 board and one USB cable, allowing users to get started right out of the box without any soldering or setup.
Backed by strict in-house quality control and responsive customer support, ELEGOO provides a dependable platform for learning, prototyping, and building a wide variety of electronics projects.
Founded in 2011, ELEGOO is a dynamic and fast-growing technology company that specializes in open-source hardware.
Our mission is to make electronics and programming accessible, affordable, and inspiring for all—from hobbyists and students to engineers and educators.
Driven by innovation and customer feedback, ELEGOO handles everything from research and development to manufacturing, marketing, and quality assurance.
We value your ideas and strive to turn them into reality. Your input shapes the future of our products.
We take quality seriously. Every ELEGOO product undergoes strict testing and inspection by our dedicated Quality Management Team, ensuring you receive components that meet the highest standards.
Whether you’re prototyping or teaching, you can rely on ELEGOO for dependable performance.
The ELEGOO UNO R3 is an upgraded version of the classic Arduino UNO, offering better flexibility, compatibility, and performance for your electronics projects.
Designed with both beginners and experts in mind, it’s the ideal platform for learning embedded systems and developing creative hardware solutions.
* **LED Data Indicators**: The RX (Receive) and TX (Transmit) LEDs blink to show real-time data communication between your UNO board and computer via USB—perfect for debugging and visual feedback.
* **Updated Pin Layout**: Additional pins near the RESET button enhance board versatility:
* IOREF Pin: Provides voltage reference, allowing connected shields to adjust to the board’s logic level.
* Reserved Pin: Future-proofing your setup, this pin is ready for expanded functionality with upcoming shields.
* **SDA & SCL Relocation**: The I2C communication pins (SDA and SCL) are now placed beside the AREF pin for better access and shield compatibility.
Here’s a breakdown of what powers the ELEGOO UNO R3 under the hood:
* Microcontroller: ATmega328P
* Operating Voltage: 5V
* Input Voltage (recommended): 7–12V
* Digital I/O Pins: 14 (6 PWM output capable)
* Analog Input Pins: 8
* DC Current on 5V Pin: 500 mA
* DC Current on 3.3V Pin: 50 mA
* Flash Memory: 32 KB (0.5 KB used by bootloader)
* Clock Speed: 16 MHz
These features make the UNO R3 a powerful yet beginner-friendly development board for experimenting with sensors, motors, displays, and other external components.
Everything you need to get started with embedded development:
* 1x ELEGOO UNO R3 Development Board
* 1x High-Quality USB Cable for power and data transfer
Just connect it to your computer, launch your coding environment (like the Arduino IDE), and you’re ready to start building and programming.
Whether you’re building a robotic arm, automating a greenhouse, or simply learning how microcontrollers work, the ELEGOO UNO R3 provides a reliable, well-documented, and adaptable platform for a wide range of projects.
* Trusted by over a million users worldwide
* Responsive customer support
* Continuous updates and community engagement
* Compatible with most Arduino shields and IDEs
Let ELEGOO power your next big idea—and take your creativity from concept to reality.
Explore more components, kits, and support on our official storefront.
