REVOLVER

ARCH746 Immersive Prototype Design[Inter]active Luminaires

Ben GoodmanAndreas KostopoulosSarah WolfZhiran Xu

lamp existing productheadlampflashlight glasses

design

function

compactdurablebrightcomfortable

illuminate field of view

lampour product

design

function

mechanizedstylishmultiple colorscontoured to the shape of the head

convey subject’s emotionschange subject’s appearanceilluminate subject for others

outward orientation inward orientation

Precedents/Inspiration

Background

The hat-like quality of the headlamp, the stylized form of the kerosene lamp, and the bizarre other-worldliness of Alexander McQueen’s work all guided

our approach to this project.

Sound:

-communicates ideas-draws attention

Volume of Sound:

-indicates importance of idea being communicated -reflects number of people in a given area-indicates where the focus is in an area

Two inputs:

ambient noiseself-generated noise (subject’s voice)

Two outputs:

-angular velocity of arms-intensity of lights

OUTPUTSINPUTS

HIGH

LOW

DULLBRIGHTLOUD SOFT

LOUD

SOFT

(am

bie

nt no

ise)

(subject’s voice)

(ang

ula

r ve

locity

)

(intensity of LED)

LOUD SOFT

LOUD

SOFT

(ambient noise)

(subject’s voice)

arms uparms bright

arms uparms dull

arms downarms bright

arms downarms dull

arms uparms bright

arms uparms dull

arms downarms bright

arms downarms dull

subject attempts to get attention

all quiet

subject’s voice vs ambient noise LED intensity vs angular velocity

PHYSICAL EFFECT BEHAVIORAL TRANSLATION

subject holds attention

subject observes

behavioral examples: How do you get someone’s attention accross a loud and crowded room?

jump and wave nod and wave make expressive face

Behavioral TranslationThe Revolver is a dynamic object that responds to inputs of volume. In the end we wanted our hat/lamp’s response to be akin to human expression or behavior.

LED bulbs

spine

light battery

joint

motor

support rod

motor battery

head piece

human head

Assembly and PerformanceThe range of motion reacts to angular velocity while the intensity of illumination reacts to volume of the area surrounding the subject.

Prototype 1

the motorprototype 1

Prototype 2Assembly and PerformanceFor the second prototype, we focused on the form and design of the Revolver. Our biggest challenge was to design a way for the arms and motor to attach to and remain on the head. First of all, we added a second arm for balance. Then we desgined a mohawk cap, to which the arms and the motor attach. Again, looking to Alexander McQueen’s aesthetic, we secured the mohawk to the head with an ace-bandage.

joint connecting the rotating arms to the center pivot

chipboard-laminated acrylic plexi with embedded LEDs

experimenting with ace-bandage wrapping technique

555 circuit with LEDs

Final ProductAssembly and PerformanceFor the final phase of this project, we tested various materials in order to achieve the strength, opacity, lightness, and form that we had been imagining from the beginning. We also concentrated on the behavior of the Revolver and worked to have it respond to environmental conditions (volume). In the end we created a video to demonstrate the result-ing object.

Components

arm assembly with slip ring made from 1/4” stereo jack and plug

Arduino Diecimila

Motor

Base

Emitter

Collector

Aud

Grd

Vcc

Vcc

1K Ω

S

D

G

150 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

120 Ω

5V

5V

Analog In Analog Out 1

Analog Out 2

5V REG

In Out

Gnd

Vcc

Vi

0.33μ 0.1μ

1

2

3

4

5

1. Electret Microphone2. Pololu 150:1 HP 200RPM3. TIP31C NPN (200V, 3A)4. IRF630 N-c (300V, 9A)5. LM7805 +5V, 1A Reg.

circuit diagram

//MEAM 516 Revolver Code//Takes input from an Electret Mic and outputs a PWM signal to control speed of motor and // These constants won't change. They're used to give names// to the pins used:const int thresh1_PotPin = A0;const int thresh2_PotPin = A1;const int analogInPin = A2; // Analog input pin that the potentiometer is attached toconst int LEDanalogOutPin = 10; // Analog output pin that the LED is attached toconst int MOTORanalogOutPin = 11; // Analog output pin that the Motor is attached toint i = 0;int k = 0;int m = 0;

int sensorValue = 0; // value read from the potint old_sensorValue = 0; int outputValue = 0; // value output to the PWM (analog out)int old_outputValue = 0;int new_outputValue = 0;int thresh1;int thresh2;

void setup() { // initialize serial communications at 9600 bps: Serial.begin(9600); analogReference(DEFAULT); }

void loop() { // read the analog in value: old_sensorValue = sensorValue; sensorValue = analogRead(analogInPin);

thresh1 = map(analogRead(thresh1_PotPin), 0, 1023, 0, 255); thresh2 = map(analogRead(thresh2_PotPin), 0, 1023, 0, 255); // map it to the range of the analog out: old_outputValue = map(old_sensorValue, 0, 1023, 0, 255); new_outputValue = map(sensorValue, 0, 1023, 0, 255); //Take the absolute difference between the old value and new value to smooth data aquisi outputValue = abs(old_outputValue - new_outputValue); //Keep LEDs slight on all the time analogWrite(LEDanalogOutPin, 20);

// change the analog out value: //Speed 1

circuit board Arduino

the assembled Revolver