Filament is based around a hacked USB dance mat. The internal board of the dancemat is plugged into a computer's USB port and numbers are collected in MaxMSP via the HI object (HI = Human Interface, a semi-universal set of device drivers that allow access to data from multiple human interface devices such as mice, keyboards and joysticks.) In order to make connection between the real world cables and the dancemat hardware easier, I asked Vangelis Lympouridis to graft an ethernet port onto the dancemat so that universally available Ethernet cable could easily be connected to the curtain of copper wires.
Filament_internals_02: Photo by Vangelis Lympouridis (2006)

This is short clip showing the backstage elements of the installation. The cables run up to a computer that detects triggers from the copper wires. These trigger premix the sound of the installation in various chaotic ways.