Just like a real candle, but flat.

This is an interactive candle. A video shows a candle calmly burning. If someone blows on the screen the candle flickers or, if the blow is strong enough, it is blown out.

Developed in vvvv. An Arduino controller is used to capture data from a bend sensor which is attached to the screen, a 15″ TFT in portrait orientation.

Here are some pictures. Click to enlarge: