Arduino Uno Rev3-Main Board

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USB B Type Cable

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  • Product Code: ARDUINO-UNO
  • Warranty Period: 12 months

Note: 1st time user please visit Getting Started with Arduino :)

Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux).

The Arduino Uno is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip.

Additional features coming with the R3 version are:
  • ATmega16U2 instead of 8U2 as USB-to-Serial converter.
  • 1.0 pinout: added SDA and SCL pins for TWI communication placed near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board and the second one is a not connected pin, that is reserved for future purposes.
  • Stronger RESET circuit.
"Uno" means "One" in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno and version 1.0 will be the reference versions of Arduino, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform.

Operating Voltage5V
Input Voltage (recommended)7-12V
Input Voltage (limits)6-20V
Digital I/O Pins14 (of which 6 provide PWM output)
Analog Input Pins6
DC Current per I/O Pin40 mA
DC Current for 3.3V Pin50 mA
Flash Memory32 KB (ATmega328) of which 0.5 KB used by the bootloader
SRAM2 KB (ATmega328)
EEPROM1 KB (ATmega328)
Clock Speed16 MHz


Arduino Starter Kit Manual Mar2010
Arduino Uno Rev3 Schematic
Arduino Starter Kit Code Mar2010
Q & A (32)
hello, aside from using arduino software for coding, do there any software can be used for coding this microcontroller? ( NUR ATIRA BINTI AMARUDIN , 16/11/2022 )
Hi, for your information there are multiple choices of Arduino IDE alternatives that are available.Some choices are :
  • PlatformIO
  • Eclipse Arduino IDE
  • Programino IDE for Arduino
  • embedXcode
  • Ktechlab
  • Codebender
  • Visual studio + Visual micro
  • Zeus IDE
  • Atmel Studio
  • ArduinoDroid
  • B4R
  • Arduino Command Line Interface (CLI)
  • Hi, can this board or other compatible boards like, maker UNO And Arduino UNO Compatible can I program these boards with a built in sketch in the Arduino IDE Software named Keyboard and Mouse control? ( Mohammed , 06/02/2021 )
    Hi, for technical assistance, you may drop an email to . Thanks :)
    Is this the latest official UNO R3 board from Does it come with a base plate? In addition, I noticed that there is printing on both sides of the headers pins and the official pictures shown seems to be different from yours. ( W, 10/08/2020 )
    Not answered yet.
    Is this only the board? or it comes with sample sensors? ( Jeanne Denice Damasco , 08/06/2020 )
    Hi, it is only the board. Thanks :)
    Does cytron distribute Arduino UNO that still made in Italy? ( khairi, 04/08/2019 )
    Hi, yes this is the original Arduino UNO board from Italy
    I am fresh about Arduino When your Bukit Mertajam Branch has a beginner course. How long is the beginner course and also the fee ? Kingly let me know the Mertajam Address. Tel and branch email address. Your may reply to my email address: .comand my H/P: 012-5032228 ( LOONG YEW MING, 17/06/2019 )
    Hi, sorry, for now, we don't have any beginner course but you may consider this kit and use guide that we prepare on the product page.
    what is the warranty ( RIchard, 20/04/2019 )
    Hi, we have 1-year warranty.
    Hi, how long does it take for it to ship to kajang, selangor? ( Mohd Afham, 21/03/2019 )
    Hi, normally it will take 1-2 working days.
    Hi, is the microcontroller ATMega 328 or ATMega 328P? ( SOO, 18/06/2018 )
    Hi, Arduino Uno is equipped with ATmega328P. Thanks.
    When will Aruduino Uno in stock? ( Test, 11/02/2018 )
    Hi, we can't guarantee when it will be restocked, cause the supplier also out of stock. You can click on Notify Me to get updates. Thanks.

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    Tags: arduino, uno, rev3-main, board arduino-uno