Arduino UNO R3 Clone
- Product SKU: ARD-02422
- Category: ALL PRODUCTS AUTO, ARDUINO, Arduino Board, Best Selling Products, DEALS OF THE WEEK, DEVELOPMENT BOARDS & PROTOTYPING

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The Arduino UNO is a widely used open-source microcontroller board based on the ATmega328P microcontroller and developed by Arduino.cc. The board is equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards (shields) and other circuits. It is programmable with the Arduino IDE (Integrated Development Environment) via a type B USB cable. It can be powered by a USB cable or by an external 9 volt battery, though it accepts voltages between 7 and 20 volts.
It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.
The ATmega328 on the Arduino UNO comes preprogrammed with a bootloader that allows to upload new code to it without the use of an external hardware programmer. It communicates using the original STK500 protocol. The Uno also differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
Note: This is a clone product with the CH34x USB to TTL IC
The Arduino UNO is a widely used open-source microcontroller board based on the ATmega328P microcontroller and developed by Arduino.cc. The board is equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards (shields) and other circuits. It is programmable with the Arduino IDE (Integrated Development Environment) via a type B USB cable. It can be powered by a USB cable or by an external 9 volt battery, though it accepts voltages between 7 and 20 volts.
It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.
The ATmega328 on the Arduino UNO comes preprogrammed with a bootloader that allows to upload new code to it without the use of an external hardware programmer. It communicates using the original STK500 protocol. The Uno also differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
Note: This is a clone product with the CH34x USB to TTL IC
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 |
LED_BUILTIN | 13 |
Length | 68.6 mm |
Width | 53.4 mm |
Weight | 25 g |
Getting Started
Programming Language Reference
Software Download
CH34x Driver for Windows
CP210x Driver for Windows
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We make our best efforts to provide accurate descriptions and best quality products as mentioned in the website. To protect our customers from shipping damage, item mismatch or missing parts, we provide customers with 7 days from the date of delivery to report the issue with the consignment to our customer relations executive via the chat window available in our website or call on + 91 86066 50999, Our Customer support engineers will verify the issue and guide you on the Return or Refund Process.
Product Return:
On receiving the product, our experts will verify the product for the cause of damage and proceed for return. In case the product is out of stock during the process and the customer is no longer in a position to wait. We will provide 100% refund to the customer, else, the replacement items will be sent to the customer immediately with shipping cost borne by Tomson Electronics.
Kindly note that no replacement will be applicable for products that have been subjected to misuse, static discharge, neglect, accident, modification, or soldering in any way. Due to nature of products and competitive pricing that we offer we are unable to provide order cancellation and return without our strict valid examination.
Tomson Electronics reserves the right to take the final decision on all refund requests.