--- product_id: 27763963 title: "UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant" price: "€ 36.33" currency: EUR in_stock: true url: https://www.desertcart.at/products/27763963-uno-r3-board-atmega328p-with-usb-cable-arduino-compatible-arduino store_origin: AT region: Austria --- # 16MHz clock speed for lightning-fast processing USB 16U2 chip for rapid data transfer 14 digital I/O pins for versatile connectivity UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant **Price:** € 36.33 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your maker game with ELEGOO UNO R3 — where speed meets versatility! ## Quick Answers - **What is this?** UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino | Compatible with Arduino IDE Projects, 32KB Flash Memory, 16Mhz Clock Speed, 14 Digital I/O Pins, RoHS Compliant - **How much does it cost?** € 36.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/27763963-uno-r3-board-atmega328p-with-usb-cable-arduino-compatible-arduino) ## 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 - • **Future-Ready Pin Layout:** Includes IOREF and reserved pins to support next-gen shields and expansions. - • **Enhanced USB Communication:** Upgraded 16U2 chip ensures faster, more reliable data transfer to your PC. - • **Robust ATmega328P Microcontroller:** Power your innovations with a trusted 32KB flash memory and 16MHz clock speed. - • **Precision Engineering & Compliance:** Clear female headers and RoHS certification for safe, professional-grade builds. - • **Seamless Arduino IDE Compatibility:** Plug-and-play with all Arduino projects and shields for effortless prototyping. ## Overview The ELEGOO UNO R3 Board is a high-performance, Arduino-compatible development board featuring an ATmega328P microcontroller with 32KB flash memory and a 16MHz clock speed. It includes 14 digital I/O pins, enhanced USB communication via a 16U2 chip, and a future-proof pin layout, all housed in a RoHS-compliant design. Perfect for professional-grade prototyping and seamless integration with Arduino IDE projects. ## 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 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 ## 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 | |---------------|-------| | Asin | B01EWOE0UU | | Best Sellers Rank | #7 in Single Board Computers (Computers & Accessories) | | Date First Available | April 28, 2016 | | Is Discontinued By Manufacturer | No | | Item Model Number | EL-CB-001 | | Item Weight | 0.96 ounces | | Manufacturer | ELEGOO | | Product Dimensions | 3.15 x 2.36 x 0.39 inches | ## 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 ![UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino | 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) ## 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 - 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.at/products/27763963-uno-r3-board-atmega328p-with-usb-cable-arduino-compatible-arduino](https://www.desertcart.at/products/27763963-uno-r3-board-atmega328p-with-usb-cable-arduino-compatible-arduino) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-20*