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Schematic for the circuit (one side of the 8 notes

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Schematic for the circuit (one side of the 8 notes

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Kelley posted a cool video on Julia's facebook

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We needed stuff to ferment!

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Julia asked if we could create one to "play" at a social science evening for adults

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I wrote to Josh to let him know he inspired us and to find out how he made the beautiful sounds in his sculpture:

From: "JoshuaRosenstock"
To: "Keith Braafladt"
Sent:Wednesday, April 2, 2014
Subject: Re: your fermentaphone
Cool, thanks for letting me know and thanks for the credit and link.
I used a number of different string and percussion modeling synthesizers in Ableton Live for my soundtrack.
Would love to see some video from your public presentation.
Best,
Josh

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Thai and Lukas and I worked on variations using Arduino code first... but

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The code below uses an extra file, pitches.h. This file contains all the pitch values for typical notes. For example, NOTE_C4 is middle C. NOTE_FS4 is F sharp, and so forth. This note table was originally written by Brett Hagman, on whose work the tone() command was based.

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We started with the Arduino IDE but Lukas realized S4A would be perfect since we wanted to play sounds and with the Arduino I was going to have to use Processing too

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S4A - Scratch for Arduino is a Scratch modification that brings the easiness of programming with Scratch to the Arduino prototyping board

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Here is that video:

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Fermentophone is a multi-sensory installation in which an algorithmically generated musical composition is performed by living cultures of bacteria and yeast. The installation comprises a series of different vessels containing actively fermenting foodstuffs and beverages, which are wired with electronic sensors. Each colorful, odorous, and edible ferment has its own musical vocabulary which is expressed according to microbial activity.

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This is the debut of the full fermentaphone remix at the Social Science event at the Science Museum