Look at any recent electronic art installation and the chances are that behind the scenes there's an arduino. In fact, Deschamps-Sonsino believes more than 100,000 arduino boards have now been sold around the world, although it is difficult to give an exact figure — in keeping with the open ethos of the movement, plans are available that allow people to make their own.
Hmmmm 100 tysięcy? Sporo :)