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Arduino Uno R3 SMD
Arduino Uno R3 SMD

Arduino Uno R3 SMD

SKU: ARD-00119

Brand: Made in China

Warranty: 3 Days

Model: N/A

৳ 485.04

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Category: Arduino & Accessories

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Description of Arduino Uno R3 SMD

The Arduino Uno R3 SMD is one of the most popular open-source microcontroller boards, featuring the ATmega328P chip in a surface-mount (SMD) form. If you're wondering what the Arduino Uno R3 SMD is, it's a programmable platform used to build electronic systems that can sense and control physical devices, just like the standard version, but with the microcontroller soldered directly onto the board.

Arduino Uno R3 SMD and Arduino Uno R3 work the same, but the SMD version has a non-removable chip and usually uses a CH340 USB converter, while the standard version has a removable DIP chip and uses Atmega16U2. It is widely used in educational projects, home automation, robotics, and DIY electronics. In other words, if you're asking what the Arduino Uno R3 SMD is used for or what you can do with it, the answer ranges from blinking an LED to creating a fully functional IoT system.

Using the Arduino Uno R3 SMD is simple. If you're unsure how to use it, just connect the board to your computer via USB, open the Arduino IDE, write a sketch (program), and click “Upload.” That’s exactly how to upload code to the Arduino Uno R3 SMD. For beginners wondering how to program it, the board supports C/C++-based programming and thousands of open-source libraries to help you get started quickly.

You might also ask how to connect the Arduino Uno R3 SMD to a computer. All you need is a standard USB cable; most models use either USB Cable A to B or Micro USB, depending on the USB-to-Serial chip, typically the CH340 in SMD versions.

And if you ever need to reboot the board, how to reset the Arduino Uno R3 SMD is as easy as pressing the small reset button located on the board.

Whether you're a student, hobbyist, or developer, the Arduino Uno R3 SMD is a budget-friendly and reliable choice for learning, prototyping, and building real-world interactive systems.

Key Features


  • Based on the ATmega328P SMD microcontroller
  • USB-to-Serial interface via CH340G or ATmega16U2
  • Fully compatible with Arduino IDE and libraries
  • Standard Arduino Uno form factor and pinout
  • Affordable alternative to the standard Arduino Uno
  • Commonly used in education, IoT, robotics, and automation

Technical Specifications


 Feature

Specification

Microcontroller

ATmega328P (SMD - ATmega328P-MU)

USB-to-Serial Converter

CH340G or ATmega16U2

Operating Voltage

5V

Input Voltage (recommended)

7V to 12V

Input Voltage (limits)

6V to 20V

Digital I/O Pins

14 (6 provide PWM output)

PWM Digital Pins

3, 5, 6, 9, 10, 11

Analog Input Pins

6 (A0 to A5)

DC Current per I/O Pin

20 mA

DC Current for 3.3V Pin

50 mA

Flash Memory

32 KB (0.5 KB used by bootloader)

SRAM

2 KB

EEPROM

1 KB

Clock Speed

16 MHz

USB Connector

USB Type-B or Micro USB (for CH340 versions)

Communication Interfaces

UART, SPI, I2C

Dimensions

68.6 mm x 53.4 mm

Weight

Approximately 25 grams

Temperature Range

-40°C to +85°C


Difference from Standard Arduino Uno R3 (DIP)


Feature

Arduino Uno R3 DIP

Arduino Uno R3 SMD

Microcontroller

ATmega328P-PU (removable)

ATmega328P-MU (SMD, soldered)

USB-to-Serial Converter

ATmega16U2

CH340

Microcontroller Replaceable?

Yes

No

Other Features

Same as SMD version

Same as DIP version

Everything else is the same as the Arduino Uno R3Arduino Uno R3 Original Version.

Pinout and Layout


The Arduino Uno R3 SMD pinout is the same as the standard UNO board:

  • Digital Pins: 0–13

  • Analog Inputs: A0–A5

  • PWM Outputs: 3, 5, 6, 9, 10, 11

  • Communication: I2C (A4/A5), SPI (10–13), UART (0/1)

  • ICSP Header and Reset Button included

Schematic reference available via: Arduino Uno R3 SMD schematic

Driver Installation Note


If your PC doesn’t recognize the board when connected via USB, it likely uses the CH340 chip.

Click here to download CH340 driver (or search: arduino uno r3 smd ch340 driver)
 

Package Includes


  • 1 x Arduino UNO SMD
  • 1 x USB Cable
  • 1 x Male header connector single row


Attention


Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, don't hesitate to get in touch with us to determine if further actions may be taken.


Need Help?


Our engineers are available to assist you. If you have any queries, please leave a comment below or call 09678110110 from 09:00 am to 08:00 pm (7 days a week). You can also reach us via Live Chat or Facebook Inbox


Arduino Uno R3 SMD – Frequently Asked Questions


What is Arduino?
Arduino is an open-source platform with programmable microcontroller boards and software, used to build interactive electronic projects.

What is Arduino Uno?
Arduino Uno is a beginner-friendly board with an ATmega328P microcontroller, widely used for learning and prototyping electronics.

What are the limitations of Arduino?
Arduino has limited memory and processing power, no OS support, and is best for simple, real-time control tasks.

What is the difference between Arduino and Raspberry Pi?
Arduino is a microcontroller without an OS, ideal for hardware control; Raspberry Pi is a full computer running Linux, suitable for multitasking and complex applications.

What is the difference between Arduino and ESP32?
ESP32 offers built-in Wi-Fi/Bluetooth and more power, perfect for IoT; Arduino is simpler and better for basic projects without wireless needs. 

What is Arduino Uno R3 SMD?
It is a version of the Arduino Uno R3 with the ATmega328P microcontroller soldered in surface-mount (SMD) form, offering the same functions as the standard Uno.

How is Arduino Uno R3 SMD different from Arduino Uno R3?
The SMD version has a non-removable chip and usually uses a CH340 USB-to-serial converter, while the standard Uno has a removable DIP chip and an Atmega16U2 USB interface.

Can I replace the microcontroller on the Arduino Uno R3 SMD?
No, since the chip is soldered directly onto the board, it cannot be replaced like the DIP version.

Is Arduino Uno R3 SMD compatible with Arduino IDE and libraries?
Yes, it works seamlessly with the Arduino IDE and supports all standard Arduino libraries.

What USB cable do I need for Arduino Uno R3 SMD?
Most versions use either USB Type-B or Micro USB cables, depending on the USB-to-serial chip on the board.

What should I do if my computer doesn’t detect the Arduino Uno R3 SMD?
Install the CH340 driver if your board uses the CH340 USB chip; this usually resolves detection issues.

How do I reset the Arduino Uno R3 SMD?
Simply press the small reset button on the board to reboot the microcontroller.

Ratings & Reviews of Arduino Uno R3 SMD

4.80
Out of 5

25 Ratings and 4 Reviews

5 star
92.00%
4 star
4.00%
3 star
0.00%
2 star
0.00%
1 star
4.00%
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Reviews (4)

User
By Tahsin Tahsin on 22 May 2025
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what is ur warranty and replacement policy?

User
By Mustakim Kaif on 14 Sep 2024
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Summary te deya drive ta download korte prothome somossha hoy pore bhaloi kaj kortese.

User
By Mrinmoy Chowdhury on 21 Oct 2021
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By Ayman Hossain on 21 Oct 2021
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By Ahmeduzzaman Robin on 21 Oct 2021
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Questions & Answers about Arduino Uno R3 SMD

Questions answered by Techshop (9)

Ata te Power ar jonno ki use korbo? Adapter or any thing else.

By aronno331@gmail.com on 07 May 2025

Arduino Uno R3 SMD তে পাওয়ার দেওয়ার জন্য একটি USB কেবল ব্যবহার করতে হবে, যা আপনি প্রোডাক্টের সাথে পেয়ে যাবেন।"

By Techshop on 08 May 2025

How we see our order no?

By prosenjitpaul638@gmail.com on 01 Feb 2023

The order number is mentioned in the order confirmation message. You can also check it on your account.

By Techshop on 02 Feb 2023

Does is comes with an USB A to USB B cable?

By NurulAhadShakik on 09 Jan 2023

Yes, it comes with cable.

By Techshop on 14 Jan 2023

When will this item be available?

By naimislam64748@gmail.com on 07 Nov 2022

ABC

By sohel171057@gmail.com on 07 Jun 2022

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Arduino Uno R3 SMD

৳ 485.04

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