buzzandy
Published

Fiber Optic Jelly Fish Skirt

Build a wearable flashy "jelly fish skirt" using LED strings and optic fibers. Durable enough to dance and wear to parties or Burning Man!

IntermediateFull instructions provided3 hours3,015
Fiber Optic Jelly Fish Skirt

Things used in this project

Hardware components

Arduino Pro Mini 328 - 5V/16MHz
SparkFun Arduino Pro Mini 328 - 5V/16MHz
×1
5v usb battery pack li-on 2000 mAh
×1
Slide Switch
Slide Switch
×1
clear fiber optic cable 1mm thickness
×1
e6000 adhesive
×1
hot glue
×1
prototype board
×1
velcro strips - 3-4 inches of each side
×1
nylon strap - 1in width
×1
ws2812b programable LED strip - 60 LED/M
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Hot glue gun (generic)
Hot glue gun (generic)
Soldering iron (generic)
Soldering iron (generic)

Story

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Schematics

Circuit Diagram

Code

Arduino Code

Arduino
#include <FastLED.h>

#define LED_PIN     5
#define COLOR_ORDER GRB
#define CHIPSET     WS2811
#define NUM_LEDS    25

#define BRIGHTNESS  200
#define FRAMES_PER_SECOND 60

#define switchPin 4

bool gReverseDirection = false;
CRGB leds[NUM_LEDS];

CRGBPalette16 currentPalette;
TBlendType    currentBlending;


void setup() {
  delay(3000); // sanity delay
  FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
  FastLED.setBrightness( BRIGHTNESS );
  pinMode(switchPin, INPUT_PULLUP); // toggle switch

  currentPalette = RainbowStripeColors_p;
  currentBlending=LINEARBLEND;
}

int i=0;
int pattern=0;

void loop()
{
  // Add entropy to random number generator; we use a lot of it.
  // random16_add_entropy( random());
  i++;
  
  if (i==100) {
    if (digitalRead(switchPin)) {
      pattern=1;
    }
    else {
      pattern=0;
    }
    i=0;
  }
  
  if (pattern) {
    Fire2012(); // run simulation frame
  }
  else {
// from ColorPallette example sketch
    static uint8_t startIndex = 0;
    startIndex = startIndex + 1; /* motion speed */
    
    FillLEDsFromPaletteColors( startIndex);  
  }

  FastLED.show(); // display this frame
  FastLED.delay(1000 / FRAMES_PER_SECOND);
}

void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
    uint8_t brightness = 255;
    
    for( int i = 0; i < NUM_LEDS; i++) {
        leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending);
        colorIndex += 3;
    }

}


// Fire2012 by Mark Kriegsman, July 2012
// as part of "Five Elements" shown here: http://youtu.be/knWiGsmgycY
//// 
// This basic one-dimensional 'fire' simulation works roughly as follows:
// There's a underlying array of 'heat' cells, that model the temperature
// at each point along the line.  Every cycle through the simulation, 
// four steps are performed:
//  1) All cells cool down a little bit, losing heat to the air
//  2) The heat from each cell drifts 'up' and diffuses a little
//  3) Sometimes randomly new 'sparks' of heat are added at the bottom
//  4) The heat from each cell is rendered as a color into the leds array
//     The heat-to-color mapping uses a black-body radiation approximation.
//
// Temperature is in arbitrary units from 0 (cold black) to 255 (white hot).
//
// This simulation scales it self a bit depending on NUM_LEDS; it should look
// "OK" on anywhere from 20 to 100 LEDs without too much tweaking. 
//
// I recommend running this simulation at anywhere from 30-100 frames per second,
// meaning an interframe delay of about 10-35 milliseconds.
//
// Looks best on a high-density LED setup (60+ pixels/meter).
//
//
// There are two main parameters you can play with to control the look and
// feel of your fire: COOLING (used in step 1 above), and SPARKING (used
// in step 3 above).
//
// COOLING: How much does the air cool as it rises?
// Less cooling = taller flames.  More cooling = shorter flames.
// Default 50, suggested range 20-100 
#define COOLING  55

// SPARKING: What chance (out of 255) is there that a new spark will be lit?
// Higher chance = more roaring fire.  Lower chance = more flickery fire.
// Default 120, suggested range 50-200.
#define SPARKING 120


void Fire2012()
{
// Array of temperature readings at each simulation cell
  static byte heat[NUM_LEDS];

  // Step 1.  Cool down every cell a little
    for( int i = 0; i < NUM_LEDS; i++) {
      heat[i] = qsub8( heat[i],  random8(0, ((COOLING * 10) / NUM_LEDS) + 2));
    }
  
    // Step 2.  Heat from each cell drifts 'up' and diffuses a little
    for( int k= NUM_LEDS - 1; k >= 2; k--) {
      heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2] ) / 3;
    }
    
    // Step 3.  Randomly ignite new 'sparks' of heat near the bottom
    if( random8() < SPARKING ) {
      int y = random8(7);
      heat[y] = qadd8( heat[y], random8(160,255) );
    }

    // Step 4.  Map from heat cells to LED colors
    for( int j = 0; j < NUM_LEDS; j++) {
      CRGB color = HeatColor( heat[j]);
      int pixelnumber;
      if( gReverseDirection ) {
        pixelnumber = (NUM_LEDS-1) - j;
      } else {
        pixelnumber = j;
      }
      leds[pixelnumber] = color;
    }
}

Credits

buzzandy

buzzandy

2 projects • 68 followers
former tech startup guy (Sales and marketing/fundraising). now just hacking electronics projects full time!
Thanks to Linawassong.

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Related channels and tags
  • Arduino
  • SparkFun
  • Wearables