Biofeedback Tips (Patreon)

There have been many attempts to convert bioelectric potentials to CV and make music with modular synths.

Using Instruo SCION is the most common method.
I am also considering a project using biofeedback.

Ten years ago in Japan, there was an attempt to convert the bioelectric potential of plants into music.

This was broadcast on Japan's public broadcaster NHK.

The music was composed by Ryuichi Sakamoto.

The sampled plant voltages were composed by converting them into sounds and scales.

The plant voltages were sampled over long periods of time, tens of hours, rather than using instantaneous voltages.
Photosynthesis causes plant voltages to vary greatly.
Daytime voltages are higher and nighttime voltages are lower.
When light is blocked by clouds, the voltage changes randomly.
A modulated LFO-like voltage can be sampled.

This project is open source and publicly available.

Voltage sampling is done using an Arduino.

Source code and schematics are available at the link.