Second test of circuitry for an upcoming art installation.
Entities achieve spontaneous synchrony through pulse coupled oscillation. Each chirper oscillates at a rate dependent on that of its neighbors. When an oscillator "fires," its neighbors move a tiny step forward or backward in their cycles to try to match phase with the firing oscillator. Eventually, a group synchrony emerges (only to be destroyed by the presence of a viewer (or, in this video, my hand...)).
Each circuit consists of a tunable dual 555 timer oscillator + speaker and an LED output. The underlying control algorithm is run by Processing. The outputs are triggered by an Arduino, which receives data from the Processing algorithm via serial communication.
Ultrasonic rangefinder will sense presence of observer and perturb oscillators. If visitor remains for a sustained period, the oscillators will enter "panic mode."
A flashlight is used to modify the character of individual oscillators by shining light on photoresistors that are part of the chirper circuits.
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