Marvin the performing robotic arm at Clocked Out
Clocked Out is a collective founded by Vanessa Tomlinson and Erik
Griswold who create and produce innovative music, interarts, and intercultural events. Their work extends on
experimental traditions in engaging and thought provoking ways. The Listening Museum, organised by Clocked-out,
was hosted by UAP and took place in their workshop areas. Musicians, sound and performance artists, got
together to explore the affordances of a factory setting provides in relation to unique sonic experiences.
By registering to this mysterious, surprising and unexpected event, the audience found themselves in a
curious sonic environment. Each audience member was free to explore, interact and experience the non-linear
mashup of sonic ideas in their own ways.
For this event, the Design Robotics team contributed to Erik Griswold’s piano composition for Marvin (KUKA
Industrial Robotic Arm in UAP) by programming the robot. The collaboration with the artist, resulted in a
unique performance of the giant robotic arm, playing a classic wall-type piano. For the performance, a
special end effector was designed to imitate the flexible movement of a fingertip. The gentle touch of the
end effector on each piano key was programmed by using Rhino and its
plug-ins for parametric design Grasshopper and KUKAprc. The midi file of the piano composition
was converted into a text file by an open source software called Anvil Studio. The text file was then disassembled into respective
parts such as notes, notes on/off, duration. The piano was then modelled into Rhino, with the exact
dimensions and its location in relation to the robotic arm. In Rhino, the end effector of the robot arm, was
aligned with the central points of each piano key, using KUKAIprc.
Marvin performed three times during the event, with a total of 100 spectators. The crowd was very engaged
and entertained with the performance. It was a great exercise for us to work with Marvin in an artistic way,
test some of the workflows and tackle some of the design issues in regards to programming a creative design
work.