Replacement:RTL-11023. We're now selling the newest revision (R3) of the Arduino UNO. This page is for reference only.
This is the same product as the Arduino Main Board. The difference is this version comes in fancy clamshell packaging meant for our distributors that need it. Regular customers are welcome to order, but we want to limit the amount of extra packaging finding its way into the trash heap. An Arduino quickstart guide is available!
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. The Uno automatically selects the appropriate power supply (USB or external power). A great description of the new functionality can be found here (USB fuse protection, software reset, and much more!). Board comes fully assembled and tested with ATMega328 pre-loaded with bootloader. Please see the Arduino support forum for more information about this new board revision and bootloader.
Can't decide which Arduino is right for you? Arduino buying guide!
**Note: **This is the Arduino Uno board in retail packaging. We now sell the Uno R3 as our retail Arduino Main Board but we have a few of these left in stock so we're selling them at a reduced price for a limited time. Get them while you can!
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