+91-9972364704 / [email protected]

Arduino Uno R3 SMD Microcontroller



1. Microcontroller ATmega328 (SMD) Interface CH340G
2. Operating Voltage: 5V
3. Input Voltage (recommended): 7-12V
4. Input Voltage (limits): 5-20V
5. Digital I / O Pins 14 (of which 6 provide PWM output)
6. Analog Input Pins: 6

Add to Wishlist
Add to Wishlist

UNO R3 SMD is the open source Embedded Development board based on Atmega328 SMD Package Microcontroller. Because Atmel is moving more and more of their production capacity to surface mount ICs, the DIP packaged ATmega is becoming more and more difficult to get.
To keep up with demand, we now offer the Uno R3 with an SMD ATmega.
The board is identical to the PTH version of the Uno, but you won’t be able to remove the ATmega without some hot air.
This change shouldn’t affect most users.

The Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino.
It is assembled with the CH340 USB to Serial converter chip, instead of using an Atmega16U2 chip.

We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the USB port. During normal operation, this board is identical to the more expensive version without CH340 chip.

Main changes from the older version:

1. Two rows of the holes for the pins (Male and Female). So it can be connected with normal Female Jumpers.
2. Additional 3 rows of the holes for wiring.
3. Changes to the DIP package of ATMEGA328P to flat package.
4. CH340G replace ATmega16U2

How to use:

1. Download the IDE Arduino
Link: http://arduino.cc/en/Main/Software (Copy to open)
2. Download the USB chip driver
Link: http://www.5v.ru/zip/ch341ser.zip (Copy to open)
3. Plug in UNO development board, the driver will be installed automatically
4. Select the UNO from the die
5. Select the COM port
6. The best choice first, Arduino comes with routine procedures, burn into it.



The Uno microcontroller operates on open-source software.
The Uno board can be powered via the USB connection or with an external power supply. The power source is selected automatically.
The Uno has a number of facilities for communicating with a computer, another Uno board, or other microcontrollers.
The Uno can be programmed with the Arduino Software (IDE)


  • Microcontroller: ATmega328 SMD.
  • Operating Voltage: 5V.
  • Supply Voltage recommended:  7-12V DC.
  • Digital I/O Pins : 14 (of which 6 provide PWM output).
  • Analog Input Pins : 6.
  • DC Current per I/O Pin : 40 mA.
  • DC Current for 3.3V Pin : 50 mA.
  • Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader.
  • SRAM: 2 KB (ATmega328).
  • EEPROM: 1 KB (ATmega328).
  • Clock Speed: 16 MHz.

Package Includes :

  • 1 x Uno R3 CH340G ATmega328p Development Board Compatible with Arduino
  • 1 x set of male Jumper Header.


1 – 24, 25 – 49, 50 – 99


There are no reviews yet.

Be the first to review “Arduino Uno R3 SMD Microcontroller”

Your email address will not be published. Required fields are marked *