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A robot arm on a truss in front of a large suspended net sprayed with soil and sprouting grass, while a person in a white overall draws in sand
Photo: Zita Oberwalder

Sybil

Ars Electronica, Linz, Austria · 2026 · Architecture and Human Augmentation, ETH Zurich

Visitors draw in sand, and a robot turns their traces into toolpaths, spraying soil and seeds onto a suspended net that grows into a living surface.

Sybil is an interactive installation in which visitors and a robot build a living surface together. Visitors draw traces in a bed of sand; depth cameras capture them, and the drawings become robotic toolpaths. A robotic arm then sprays a mixture of clay, soil, cellulose and seeds along those paths onto a suspended net, where grass and other plants grow over the course of the exhibition.

How COMPAS was used

COMPAS RRC sends the toolpaths, generated from the visitors' drawings, to the ABB GoFa robot that sprays the soil. The project also builds on COMPAS XR, developed at the same lab.

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