--- product_id: 254187770 title: "ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant" brand: "elegoo" price: "212.42 DT" currency: TND in_stock: true reviews_count: 5 category: "Elegoo" url: https://www.desertcart.tn/products/254187770-elegoo-uno-r3-board-atmega328p-atmega16u2-with-usb-cable-compatible store_origin: TN region: Tunisia --- # 16MHz clock speed 32KB flash memory USB & 7-12V power input ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant **Brand:** elegoo **Price:** 212.42 DT **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your maker game with ELEGOO UNO R3 — where speed meets precision! ## Quick Answers - **What is this?** ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant by elegoo - **How much does it cost?** 212.42 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/254187770-elegoo-uno-r3-board-atmega328p-atmega16u2-with-usb-cable-compatible) ## 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 - • **Versatile Power Options:** Seamlessly power your board via USB or 7-12V DC for ultimate flexibility. - • **User-Friendly Pin Layout:** Clearly labeled headers make wiring intuitive and error-proof—perfect for pros. - • **Blazing 16MHz Performance:** Experience lightning-fast processing for your innovative projects. - • **Generous 32KB Flash Storage:** Store and run complex code effortlessly with ample onboard memory. - • **Plug & Play Arduino IDE Compatibility:** Jumpstart your coding with preloaded bootloader and seamless IDE integration. ## Overview The ELEGOO UNO R3 is a premium Arduino-compatible development board featuring an ATmega328P microcontroller running at 16MHz with 32KB flash memory. It supports USB and 7-12V DC power inputs, includes 14 digital I/O pins, and offers clear pin labeling for easy wiring. Preloaded with a bootloader for seamless Arduino IDE integration, this RoHS-compliant board delivers reliable, high-quality performance ideal for professional and hobbyist projects alike. ## 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 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 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. Review: Amazing board! - Forget the name brand boards, you cannot beat these things for the price. I got 4 of them and never had any issues, great speed, board looks to be very good quality. I've ran cncs with them and there super reliable. 5 stars baby Review: work as described - Product is very good and work as described Price is competitive ## 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 | #75,437 in Computers ( See Top 100 in Computers ) #1,104 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 (4,805) | | 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 ![ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant - Image 1](https://m.media-amazon.com/images/I/71cvvGHcMwL.jpg) ![ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant - Image 2](https://m.media-amazon.com/images/I/81dIDalgJvL.jpg) ![ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant - Image 3](https://m.media-amazon.com/images/I/71oypbzrMOL.jpg) ![ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant - Image 4](https://m.media-amazon.com/images/I/71ZZFJ9pnxL.jpg) ![ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant - 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 ### ⭐⭐⭐⭐⭐ Amazing board! *by C***S on 26 March 2026* Forget the name brand boards, you cannot beat these things for the price. I got 4 of them and never had any issues, great speed, board looks to be very good quality. I've ran cncs with them and there super reliable. 5 stars baby ### ⭐⭐⭐⭐⭐ work as described *by M***I on 4 May 2026* Product is very good and work as described Price is competitive ### ⭐⭐⭐⭐⭐ Jättebra köp *by K***. on 12 January 2022* Fungerade precis som jag hade förväntat mig, bra produkt ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/254187770-elegoo-uno-r3-board-atmega328p-atmega16u2-with-usb-cable-compatible](https://www.desertcart.tn/products/254187770-elegoo-uno-r3-board-atmega328p-atmega16u2-with-usb-cable-compatible) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-10*