Troglophonic is a small piece of sound art driven primarily by the Daisy Seed and an Adafruit motor shield. At rest it is silent, but upon exposure to direct light, the creature responds with joyful whisker rotation and an evolving arpeggiated musical pattern. Pressing on its belly elicits a pressure-dependent physical vibration and chord like tone paired with the arpeggio.
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How does it work?
The Adafruit motor shield is used to drive the DC motor forming the "face" of the creature, controlled via I2C from the daisy. The photoresistor signal (with *heavy* smoothing/lag) controls the speed of the motor as well as the arpeggiated pattern.
The creature's belly is a pressure sensor made from a layer of velostat sandwiched by aluminum foil. This acts as a variable resistor and provides an analog pressure signal to the daisy, which controls the level of the vibration motor as well as the filtered chord sound.
See also: how-to doc on using the motor shield with Daisy Seed: https://docs.google.com/document/d/1cHKBavon6EkR0gCMw8xT9m3ZgBFRKfrvq_6chKyF69g/edit?usp=sharing
A powerful microcontroller for synthesis programmed through C++, Arduino, Pure data and Max MSP
A light sensor detects light in its proximity
Velostat is a conductive material. It's pressure-sensitive and can be used as a pressure or bend sensor. Squeezing it will reduce the resistance.
About the instrument
The making of
Behind the scenes
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