Living plant controls a machete through an industrial robot arm (twitter.com)

This installation enables a live plant to control a machete. Plant machete has a control system that reads and utilizes the electrical noises found in a live philodendron. The system uses an open source micro-controller connected to the plant to read varying resistance signals across the plant’s leaves. Using custom software, these signals are mapped in real-time to the movements of the joints of the industrial robot holding a machete. In this way, the movements of the machete are determined based on input from the plant.

(from the twitter description, not my words)