---
product_id: 254187770
title: "UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant"
brand: "elegoo"
price: "1398773₫"
currency: VND
in_stock: true
category: "Elegoo"
url: https://www.desertcart.vn/products/254187770-uno-r3-board-atmega328p-atmega16u2-with-usb-cable-compatible-arduino
store_origin: VN
region: Vietnam
---

# 16MHz clock speed for lightning-fast processing 32KB flash memory for robust project storage Supports 7-12V DC input for versatile power options UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant

**Brand:** elegoo
**Price:** 1398773₫
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your DIY game with ELEGOO UNO R3 – where speed meets stability!

## Quick Answers

- **What is this?** UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant by elegoo
- **How much does it cost?** 1398773₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/254187770-uno-r3-board-atmega328p-atmega16u2-with-usb-cable-compatible-arduino)

## Best For

- elegoo enthusiasts

## Why This Product

- Trusted elegoo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Flexibility:** Supports 5V USB and 7-12V DC inputs, with recommended 9V1A for rock-solid stability.
- • **Future-Proof Design:** Extra IOREF and reserved pins enable compatibility with the latest Arduino shields and expansions.
- • **User-Friendly Wiring:** Clearly labeled I/O pins on female headers make prototyping faster and error-free.
- • **Blazing Fast Microcontroller:** ATmega328P chip delivers smooth, high-speed performance for complex Arduino projects.
- • **Plug & Play USB Connectivity:** ATMega16U2 serial interface ensures seamless, reliable USB communication with your PC.

## Overview

The ELEGOO UNO R3 Board is a high-quality, Arduino IDE-compatible development board featuring an ATmega328P microcontroller and ATMega16U2 USB interface chip. It supports versatile power inputs (5V USB and 7-12V DC), includes 14 digital I/O pins, 8 analog inputs, and 32KB flash memory, all running at 16MHz clock speed. Designed for both beginners and pros, it offers clear pin labeling and future-ready IOREF pins, ensuring seamless integration with existing and upcoming Arduino shields. RoHS compliant and backed by strong user reviews, this board is a reliable, cost-effective choice for fast, stable prototyping and development.

## Description

----The RX and TX LEDs on the board will flash when data is being transmitted via the USB-to-serial chip and USB connection to the computer.----The ELEGOO R3 puts SDA and SCL pins beside the AREF. Besides, there are two new pins placed near the RESET pin. One is the IOREF that allows the shields to adapt to the voltage provided from the board and the other one is reserved for future purposes. The ELEGOO R3 works with all existing shields and can adapt to new shields which use these additional pins.Features* ATmega328P microcontroller* Input voltage - 7-12V* 5V Electric current: 500MA* 3.3V Electric current: 50MA* 14 Digital I/O Pins (6 PWM outputs)* 8 Analog Inputs* 32k Flash Memory* 16Mhz Clock SpeedComponent listing:1pcs ELEGOO R3 Development Board1 pcs USB cableWe have the manufacture factory, making productions and selling by ourselves.So we can control the quality of our productions by ourselves for you.We’d like to receive your valuable suggestions for our products and make your idea come true.

## Features

- High-quality UNO R3 controller board functional compatible with Arduino IDE
- ELEGOO UNO R3 board uses an ATMega16U2 as a Serial interface Chip and an ATmega328P as a Microcontroller Chip making it more faster in transfer rates and better at storage and operation with more memory store
- Supports USB 5V Input and 7V -12V DC Input and if you are working on small projects we suuggest you use 9V1A Input to get a more stable user experience
- A PTC resettable fuse could protect your board from shortcut caused by incorrect wiring
- I/O interface name and function are indicated on the flank of the Female Header Connector making it much easier for wiring

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EWOE0UU |
| Are Batteries Included | No |
| Best Sellers Rank | #73,806 in Computers ( See Top 100 in Computers ) #1,059 in Single-Board Computers |
| Brand | ELEGOO |
| Color | Black |
| Computer Memory Type | 72-Pin EDO SIMM Memory |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,803) |
| Date First Available | 7 October 2016 |
| Graphics Card Description | Integrated |
| Graphics RAM Type | DDR DRAM |
| Hard Disk Description | HDD |
| Hard Drive Interface | ATA-4 |
| Item Weight | 27.2 g |
| Item model number | EL-CB-001 |
| Manufacturer | Elegoo |
| Memory Technology | SRAM |
| Operating System | Windows 10 |
| Optical Drive Type | BD-R |
| Processor Brand | Atmel |
| Processor Count | 1 |
| Processor Speed | 0.02 GHz |
| Processor Type | Cortex A8 |
| Product Dimensions | 8 x 5.99 x 0.99 cm; 27.22 g |
| RAM Size | 2 KB |
| Series | ELEGOO UNO R3 Board |
| Standing screen display size | 3 |
| Wireless Type | Bluetooth |

## Product Details

- **Brand:** ELEGOO
- **CPU model:** Cortex A8
- **Installed RAM memory size:** 32 KB
- **Memory storage capacity:** 32 KB
- **Model name:** ELEGOO UNO R3 Board

## Images

![UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant - Image 1](https://m.media-amazon.com/images/I/71cvvGHcMwL.jpg)

## Questions & Answers

**Q: Is this the same thing as an arduino?**
A: Arduino is just a specification for a microcontroller. Although there is an official "Arduino Brand" this model does 100% of what that model does for $5 less. I have a kit that connects every GPIO pin of Arduino, and it connected fine. So for all intents and purposes, this is "the same thing as an arduino."

**Q: Ordered two of these and get the same error message: avrdude: ser_open() : can't open device "\\.\COM4": the system cannot find the file specified.**
A: When this happens, I've fixed it by closing the Arduino IDE, unplugging my USB cable from the UNO, plugging it back in, and restarting the IDE.  (Save the file before closing the IDE, if desired.)  This has always corrected the issue for me, even when the IDE shows an Arduino on COM4 and it's selected yet still seems unavailable.

**Q: Does this use the CH340 ?**
A: No. And no. He wants to know the USB chip, not the MCU chip. The USB chip is a CP2021 or whatever, it isn't the CH340.

**Q: is the Elegoo compatible with the official Arduino program? (1.8.1 to be exact)**
A: While I have not updated to 1.8.1 yet, I have used it with previous versions with no issues, so I see no reason why it should not work with the latest. I have used 3rd party programs and libraries as well.

## Frequently Bought Together

- ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino
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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-22*