Is this the same thing as an arduino?

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."

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.

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.

Does this use the CH340 ?

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.

is the Elegoo compatible with the official Arduino program? (1.8.1 to be exact)

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.

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UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino

UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino

Product ID: 27763963

Details

Brand
ELEGOO
Connectivity Technology
USB
Memory Storage Capacity
32 KB
Model Name
ELEGOO UNO R3
Ram Memory Installed Size
32 KB

⚡16MHz clock speed for smooth performance

💾32KB Flash Memory for complex projects

🔌14 Digital I/O pins for versatile connectivity

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Description

🚀 Elevate your maker game with ELEGOO UNO R3 — where pro-level power meets seamless creativity!

UPGRADED 16 U 2 USB CHIP - Experience faster data transfer and enhanced memory with the modern 16U2 chip, leaving older models behind.
ECO FRIENDLY CERTIFIED - RoHS compliant design means you’re building smarter and greener, aligning with modern sustainability values.
ROBUST A TMEGA 328 P MICROCONTROLLER - Power your projects with the same reliable chip as the official Arduino UNO R3, ensuring top-tier performance.
PRECISION FEMALE HEADER CONNECTORS - Clear, precise headers make wiring intuitive and reduce setup time—perfect for busy innovators.
SEAMLESS ARDUINO IDE COMPATIBILITY - Plug-and-play with the industry-standard Arduino IDE for effortless coding and prototyping.

The ELEGOO UNO R3 Board is a high-performance, Arduino-compatible development board featuring a 16MHz ATmega328P microcontroller, 32KB flash memory, and 14 digital I/O pins. It includes an upgraded 16U2 USB chip for faster data transfer and is fully compatible with the Arduino IDE. Designed with precision female headers and RoHS compliance, it offers a reliable, eco-conscious platform ideal for professional-grade prototyping and innovative projects.

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€ 38.05

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B01EWOE0UU
Best Sellers Rank	#14 in Single Board Computers (Computers & Accessories)
Date First Available	April 28, 2016
Item Weight	0.96 ounces
Item model number	EL-CB-001
Manufacturer	ELEGOO
Product Dimensions	3.15 x 2.36 x 0.39 inches

UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino

Details

Details

Description

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Common Questions