These cool looking sculptures are actually interactive sound-making electronic circuits
by Mark Frauenfelder from on (#2VK07)
Artist Eirik Brandal makes sculptural electronic circuits that generate music. Above, "composition #11"
Interactive sound sculpture, 2016
+12V, self-supplied
Two proximity sensors trigger and control the frequency of sine waves. The design is inspired by Dutch artist Piet Mondrian, hence the title, 'Composition #11'. Exhibited in De Fabriek, Eindhoven, 2016.
He makes neat synths, too!