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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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

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

🔌USB 16U2 chip for faster data transfer

🧩100% Arduino IDE compatible

₩43785

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

Description

⚡ Elevate your maker game with ELEGOO UNO R3 — where speed meets seamless coding!

TRUE ARDUINO DNA - Powered by ATmega328P, identical to official Arduino UNO R3
PLUG PLAY INNOVATION - Seamless integration with Arduino IDE for instant project starts
TURBOCHARGED DATA FLOW - Upgraded 16U2 chip ensures lightning-fast USB communication
ECO CONSCIOUS CRAFTSMANSHIP - RoHS compliant for responsible, sustainable tech
PRECISION ENGINEERED CONNECTIVITY - Clear female header prints for effortless wiring

The ELEGOO UNO R3 Board is a high-performance Arduino-compatible development board featuring an ATmega328P microcontroller and an upgraded 16U2 USB interface chip for faster data transfer. It offers 14 digital I/O pins, 32KB flash memory, and runs at 16MHz clock speed. Fully compatible with the Arduino IDE and RoHS compliant, this compact 3.15 x 2.36 inch board is designed for precision, ease of use, and eco-friendly innovation, making it a top choice for professional and hobbyist developers alike.

Specifications

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

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₩43785

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews