Arduino UNO 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).

In this Arduino we use ATmega328.

In addition to all the features, the our Arduino now uses an ATmega8 instead of the FTDI chip.