Particles is the latest installation by Daito Manabe and Motoi Ishibashi currently on exhibit at the Yamaguchi Center for Arts and Media [YCAM]. The installation centers around a spiral-shaped rail construction on which a number of balls with built-in LEDs and XBee transmitters are rolling while blinking in different time intervals, resulting in spatial drawings of light particles.

The position of each ball is determined via total of 17 control points on the rail. Every time a ball passes through one of them, the respective ball’s positional information is transmitted via a built-in infrared sensor. During the time the ball travels between one control points to the next, this position is calculated based on its average speed. The data for regulating the balls’ luminescence are divided by the control point segments and are switched every time a ball passes on a control point.