Uno (CH340)

450.00 350.00

The UNO is the best board when you are starting with electronics and coding. If this is your first experience tinkering with the platform, the UNO is the most robust board you can start playing with.  In the arduino family, the most used and documented board is UNO.

60 in stock

SKU: 0011 Categories: , Tags: , , ,


Uno (CH340) is a microcontroller board based on the ATmega328P (datasheet). There are   14 digital input/output pins (of which 6 can be used as PWM outputs) in a package that also includes 6 analog inputs, 16 MHz quartz crystal, USB connection, power jack, ICSP header and reset button. It contains everything needed to support the microcontroller. In starting,you can simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery. You can tinker with your UNO without worrying too much about doing something wrong.

“Uno” means one in Italian was chosen to mark the release of Arduino Software (IDE) 1.0. The Uno board and version 1.0 of Arduino Software (IDE) were the reference versions of Arduino, evolving to newer releases. The Uno board is the first in a series of USB Arduino boards, the reference model for the Arduino platform.

The only difference on this board from the official Arduino Uno is that, this uses CH340 chip for the usb to serial converter. So, you need to install the driver first before you can program this board. You can find the download link of the driver below.


Microcontroller ATmega328P
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limit) 6-20V
Digital I/O Pins 14 (of which 6 provide PWM output)
PWM Digital I/O Pins 6
Analog Input Pins 6
DC Current per I/O Pin 20 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega328P) of which 0.5 KB used by bootloader
SRAM 2 KB (ATmega328P)
EEPROM 1 KB (ATmega328P)
Clock Speed 16 MHz
Length 68.6 mm
Width 53.4 mm
Weight 25 g

Before plugging this board to your PC, please install the driver first for CH340. Click this link for the detailed instruction on how to install the driver on different OS.


Arduino Home Page

Product Page

Atmega328P Datasheet

Programming Guide

Download Arduino IDE

UNO R3 (CH340) as a Cheaper Alternative to Arduino Uno



Video Tutorial

Additional information

Weight 0.1 kg


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