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This is a retired product. There is an updated version available: DEV-11021
Description: Replacement:DEV-11021. The Arduino Uno has a new R3 version. It breaks out a few more pins, moves the reset button, and uses an ATMega16U2 instead of the 8U2. This page is for reference only.
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).
This is the new Arduino Uno. In addition to all the features of the previous board, the Uno now uses an ATmega8U2 instead of the FTDI chip. This allows for faster transfer rates, no drivers needed for Linux or Mac (inf file for Windows is needed), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc.
Not sure which Arduino or Arduino-compatible board is right for you? Check out our Arduino Buying Guide! Is the Uno out of stock? We also carry an Arduino Uno SMD variant that should be easier for us to keep in stock.
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