A Third Exhibit, NICAP Commission

http://www.thelateshows.org.uk/home.html

In March 2015 I was part of a collaborative commission for NICAP alongside Helen Shaddock, Ed Wainwright, Corbin Wood, Jack Lines and Mags Margetts to produce a piece of work responding to Newcastle University’s Hatton Gallery collection of Victor Pasmore’s work, in particular focusing on his seminal spatial work ‘An Exhibit’.

http://moussemagazine.it/taac1-b/

This group commission produced an interactive audiovisual response to Pasmore’s work, informed by the disciplines of each person involved, including music, digital interactivity, architecture, visual art, creative coding and fabrication.

‘An Exhibit’ comprised a number of coloured plexiglass sheets hung in the Hatton Gallery which would create the visual effect of coloured windows through which would filter the vision of observers, much like a filter on a photograph. As there were a number of these plexiglass sheets, by moving around the gallery space visitors could experiment with the effects of their physical placement on their ability to observe the world through these filters. Despite the fact that this work was produced in 1957, it had a strong focus on interactivity, and this was the driving force for our response, ‘A Third Exhibit’.

‘A Third Exhibit’ took inspiration from these plexiglass sheets with weighted cloth sheets suspended in the air of the main Hatton Gallery space using helium balloons which would freely move around the space according to air turbulence created by foot traffic throughout the exhibition. These weighted cloth sheets were then lit by eight DMX lights, controlled from my laptop by two distance-sensing ‘nodes’ placed at central points of the gallery space to be triggered by the actions of visitors. There was also a musical piece composed by Corbin Wood using sound recordings taken throughout the collaborative process which was triggered by the activation of these nodes.

My responsibility for the work was in designing the interactive system which would turn the movement of visitors into changes in lighting through the space. The distance-sensing ‘nodes’ I used to do this took the form of camera tripods with Arduino Mega boards mounted on them, with each Mega board being host to a ring of eight HC-SR04 ultrasonic distance sensors. The information generated by these nodes was fed back to a laptop over a Serial connection, and the serial connection was then read using Pd-extended, which processed the distance information gathered by the sensors into DMX values, which were then sent to the eight lights in the room using Q Lighting Controller and a USB-DMX interface, as well as controlling the volume of a stereo sound piece. I developed this interactive system using Linux.

The effect of the interactive system and the shifting cloth sheets created an evolving, generative artwork which was directly (distance to nodes changing the colour of lights) as well as indirectly (air turbulence gradually changing the position of sheets) controlled by the visitors to the gallery. The eight lights in different colours shining at different angles on different cloth sheets produced a number of subtle colour changes throughout the room, with colours regularly being intersected and changed by the cloth sheets.

Visitors responded very well to the interactivity in the piece, keen to see how their movements would change the colours in the space and to experience the work through discovery and participation.

‘A Third Exhibit’ was shown for The Late Shows 2015
Photography by Corbin Wood and Helen Shaddock.

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