Use Moire_Pattern to interact with audiences. The rotation of the Moire was controlled by light sensor. We use Flash light to change the angle of the ration. Staring at the center of the Moire_Pattern will make you fell dizzy and 3D hallucination. There are 13 moire elements in this wall. each of them is controlled by it's own sensor and servo which connect to Arduino Mega. more info: http://pandalabccc.blogspot.com/2010/05/finalmoirewall-arduino-mega-lightsensor.html
