--- product_id: 27763963 title: "ELEGOO UNO R3 Board ATmega328P" price: "€ 30.30" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.be/products/27763963-elegoo-uno-r3-board-atmega328p store_origin: BE region: Belgium --- # 16U2 chip for faster USB transfer 100% Arduino IDE compatibility ATmega328P processor, Arduino-standard ELEGOO UNO R3 Board ATmega328P **Price:** € 30.30 **Availability:** βœ… In Stock ## Summary > πŸš€ Elevate your maker game with ELEGOO UNO R3 β€” where pro speed meets plug-and-play ease! ## Quick Answers - **What is this?** ELEGOO UNO R3 Board ATmega328P - **How much does it cost?** € 30.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/27763963-elegoo-uno-r3-board-atmega328p) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Pro-Grade Reliability:** Trusted by makers and pros alike for CNC and robotics projects with zero downtime. - β€’ **Blazing Fast USB Transfers:** Upgraded 16U2 chip delivers rapid, reliable data flow for seamless coding sessions. - β€’ **Compact & Lightweight Design:** Sleek 3.15" x 2.36" footprint fits perfectly into any workspace or project enclosure. - β€’ **Precision-Engineered Connectors:** Clear-labeled female headers make wiring effortless and error-free every time. - β€’ **Plug & Play Arduino Compatibility:** Works flawlessly with Arduino IDEβ€”no driver headaches, just pure productivity. ## Overview The ELEGOO UNO R3 Board features an ATmega328P microcontroller and an upgraded 16U2 USB interface chip, ensuring faster data transfer and enhanced memory. Fully compatible with the Arduino IDE, it offers clear female header labeling for precise wiring and is RoHS compliant. Lightweight and compact, this board is a reliable, cost-effective choice for professional-grade electronics projects and rapid prototyping. ## Description Product description Established in 2011, ELEGOO is a thriving technology company dedicated to open-source hardware research & development, production and marketing. Our own Quality Management Team will secure the premium quality of our products and we would like to receive your valuable suggestions for our products and make your idea come true. ----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 UNO 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 UNO 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 Speed Component listing 1pcs ELEGOO UNO R3 Development Board 1 pcs USB cable It use the same ATmega328 as official Arduino UNO R3 board. The ATmega328 on the UNO R3 comes preprogrammed with a bootloader that allows you to upload new code to it without the use of an external hardware programmer. The ATmega328 has 32 KB (with 0.5 KB occupied by the bootloader). It also has 2 KB of SRAM and 1 KB of EEPROM (which can be read and written with the EEPROM library). It use the same ATmega16U2 as official Arduino UNO R3. The ATmega16U2 firmware source code is available in the official repository. The ATmega16U2/8U2 is loaded with a DFU bootloader, which can be activated. The ELEGOO UNO R3 board can be powered via the USB connection. The ELEGOO UNO R3 board can be powered with an external power supply. Excellent welding and production quality to make sure satisfied customer experience Clearly printed pin names on the header connector, more precise and much easier to use the wires. ## Features - Clear prints on the female header connector, more precise and easier to use the wire. - The ELEGOO UNO R3 BOARD now uses an 16U2 instead of the ATMega8U2 chip. Faster transfer rates and more memory. - Control using ATMEL ATMEGA+328P chip(the same with Arduino UNO R3) - 100% compatible with the Arduino IDE and RoHS Compliant - We have always cared about the customer experience and improve the product function details. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.7 out of 5 stars 5,025 Reviews | ## Product Details - **Brand:** ELEGOO - **Connectivity Technology:** USB - **Memory Storage Capacity:** 32 KB - **Model Name:** ELEGOO UNO R3 Board - **Ram Memory Installed Size:** 32 KB ## Images ![ELEGOO UNO R3 Board ATmega328P - Image 1](https://m.media-amazon.com/images/I/71cvvGHcMwL.jpg) ![ELEGOO UNO R3 Board ATmega328P - Image 2](https://m.media-amazon.com/images/I/81dIDalgJvL.jpg) ![ELEGOO UNO R3 Board ATmega328P - Image 3](https://m.media-amazon.com/images/I/71oypbzrMOL.jpg) ![ELEGOO UNO R3 Board ATmega328P - Image 4](https://m.media-amazon.com/images/I/71ZZFJ9pnxL.jpg) ![ELEGOO UNO R3 Board ATmega328P - Image 5](https://m.media-amazon.com/images/I/61K9WPBJzxL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by C***S on March 26, 2026* ### ⭐⭐⭐⭐⭐ Review *by O***M on April 27, 2024* ### ⭐⭐⭐⭐⭐ Review *by M***D on June 3, 2025* ## Frequently Bought Together - ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects - ELEGOO 3pcs Breadboard 830 Point Solderless Prototype PCB Board Kit for Arduino Proto Shield Distribution Connecting Blocks --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/27763963-elegoo-uno-r3-board-atmega328p](https://www.desertcart.be/products/27763963-elegoo-uno-r3-board-atmega328p) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-04*