Friday, December 12, 2008
this is our first attempt at prototyping a modular unit to occupy our various locations/scenarios. the standalone unit allows the flexinol lens cover to obscure and reveal a camera based on the given sound input threshold, while the led reacts with pulse width modulation to the same sound source. the opacity of the mylar describes a location for possible video playback from other module sources, giving the unit the ability to record and capture video/sound, as well as project video/sound from other units. the low tech flexinol lens cover is revealed in a way that makes the act of recording explicit, while the variations in led intensity begin to reinforce the understanding of sound as input. the systems within the unit are contained yet don't attempt to become hidden surveillance. we're more interested in the possibility for a feedback loop with hopes that the input and playback might begin to play an interactive role with the behavior of the people passing by.
in this video, the flexinol's reaction to sound are only slight. this was mostly due to the acrylic melting upon contact with the heated wire. (by the way, that song is silent kid - pavement)
Labels: arduino, audio, booth, flexinol, led, pd, puredata, sound
sound input with flexinol and led output
we rebuilt the puredata file to also include an led responding to sound with pwm, as well as an option for adjusting the input's amplitude threshold.
Labels: arduino, audio, booth, flexinol, led, pd, puredata, pwm, sound
Tuesday, November 11, 2008
Prototype 6
Tuesday, November 4, 2008
audio input and pwm led output
using our mic-in program along with a couple decibel converters, we wrote a program using audio as input through the laptop microphone to control the pulse width modulation of an led (dimming). the led's intensity varies according to the amplitude of the sound input. we also have the audio signal writing to an array/wave.
Labels: arduino, booth, led, microphone, pd, puredata, pwm
led pulse width modulation with pure data
with an arduino, a breadboard, and pure data, we modified our led toggle program to use a pulse width modulator (pwm) to simulate an analog output in order to dim an led.
Labels: arduino, booth, led, pd, pulsewidthmodulator, puredata, pwm
Sunday, November 2, 2008
led pulse with pure data
in pure data, we created a program to toggle an led to pulse at a given metro rate. half way through the video, we changed the metro rate from 100 (ms) to 500 (ms). this program also uses a digital toggle object as an input (on/off).
Labels: arduino, booth, led, pd, pulse, puredata
led toggle with pure data
using puredata (a dataflow programming language much like max/msp, but opensource), we've set up a simple program to activate an led (on/off) with a digital toggle object.
Labels: arduino, booth, led, pd, puredata, toggle
LED patterns with ARDUINO
these are the videos of our led arrays using the arduino software. the code was posted on oct. 7. both videos show the same example with different pacing/delays.
Labels: arduino, array, booth, led
