Neopixel Meteor Scarf

MeteorScarf.ino

// Note: Based on Meteor Rain example sketch found in Tweaking4All.com from Using Neopixels guide.
//

#include <Adafruit_NeoPixel.h>


#define NUM_LEDS    28
#define PIN     9
#define PIN1    10
#define PIN2    6
#define BRIGHTNESS  40

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip1 = Adafruit_NeoPixel(NUM_LEDS, PIN1, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip2 = Adafruit_NeoPixel(NUM_LEDS, PIN2, NEO_GRB + NEO_KHZ800);



void setup() {
//Serial.begin(9600);


strip.begin();
strip1.begin();
strip2.begin();
strip.setBrightness(BRIGHTNESS);
strip1.setBrightness(BRIGHTNESS);
strip2.setBrightness(BRIGHTNESS);
strip.show();
strip1.show();
strip2.show();

randomSeed(analogRead(0));

}



//============================================================
void loop(){


  
byte rr = 0xff;
byte gg = 0xff;
byte bb = 0xff;

/////////////////////////////////

int zz = random(1,6);
//Serial.println(zz);
//change rgb hex values for different color random meteor
if( zz != 5){
  rr = 0xff;
  gg = 0xff;
  bb = 0xff;
}
else {
  rr = 0xff;
  gg = 0x00;
  bb = 0x00;  

}

 meteorRain(random(1,5), rr, gg, bb, random(2,8), random(64,75), true, random(25,75));
 // meteorRain(byte red, byte green, byte blue, byte meteorSize, byte meteorTrailDecay, boolean meteorRandomDecay, int SpeedDelay)
//////////////////////////////////  
delay(random(2000));
}

//============================================================
//============================================================

 void meteorRain(int rx, byte red, byte green, byte blue, byte meteorSize, byte meteorTrailDecay, boolean meteorRandomDecay, int SpeedDelay) {  
  setAll(0,0,0);
  
  for(int i = 0; i < NUM_LEDS+NUM_LEDS; i++) {
    
    
    // fade brightness all LEDs one step
    for(int j=0; j<NUM_LEDS; j++) {
      if( (!meteorRandomDecay) || (random(10)>5) ) {
        fadeToBlack( rx, j, meteorTrailDecay );        
      }
    }
    
    // draw meteor
    for(int j = 0; j < meteorSize; j++) {
      if( ( i-j <NUM_LEDS) && (i-j>=0) ) {
        setPixel(rx, i-j, red, green, blue);
      } 
    }
   
    showStrip();
    delay(SpeedDelay);
  }
}

void fadeToBlack(int rxx, int ledNo, byte fadeValue) {

    uint32_t oldColor;
    uint8_t r, g, b;
    int value;
    
    oldColor = strip.getPixelColor(ledNo);
    r = (oldColor & 0x00ff0000UL) >> 16;
    g = (oldColor & 0x0000ff00UL) >> 8;
    b = (oldColor & 0x000000ffUL);

    r=(r<=10)? 0 : (int) r-(r*fadeValue/256);
    g=(g<=10)? 0 : (int) g-(g*fadeValue/256);
    b=(b<=10)? 0 : (int) b-(b*fadeValue/256);
    
 
    switch(rxx){
    case 1:
    strip.setPixelColor(ledNo, r,g,b);
    break;
    case 2:
    strip1.setPixelColor(ledNo, r,g,b);
    break;
    case 3:
    strip2.setPixelColor(ledNo, r,g,b);
    break;
    case 4:
    strip.setPixelColor(ledNo, r,g,b);
    strip2.setPixelColor(ledNo, r,g,b);
    break;
    default:
    strip.setPixelColor(ledNo, r,g,b);
    strip1.setPixelColor(ledNo, r,g,b);
    strip2.setPixelColor(ledNo, r,g,b);
    break;
    }
}

void showStrip() {
   strip.show();
   strip1.show();
   strip2.show();
}

void setPixel(int rxxx, int Pixel, byte red, byte green, byte blue) {
   switch (rxxx){
   case 1:
   strip.setPixelColor(Pixel, strip.Color(red, green, blue));
   break;
   case 2:
   strip1.setPixelColor(Pixel, strip.Color(red, green, blue));
   break;
   case 3:
   strip2.setPixelColor(Pixel, strip.Color(red, green, blue));
   break;
   case 4:
   strip.setPixelColor(Pixel, strip.Color(red, green, blue));
   strip2.setPixelColor(Pixel, strip.Color(red, green, blue));
   break;
   default:
   strip.setPixelColor(Pixel, strip.Color(red, green, blue));
   strip1.setPixelColor(Pixel, strip.Color(red, green, blue));
   strip2.setPixelColor(Pixel, strip.Color(red, green, blue));
   break;
   }
 }

void setAll(byte red, byte green, byte blue) {
 
  for(int i = 0; i < NUM_LEDS; i++ ) {
   strip.setPixelColor(i, strip.Color(red, green, blue));
   strip1.setPixelColor(i, strip.Color(red, green, blue));
   strip2.setPixelColor(i, strip.Color(red, green, blue)); 
  }
  showStrip();
}

Arduino sketch for Meteor Scarf.
Uses Adafruit Neopixel library.
Adafruit Flora with Neopixel strips. 3 data pins used for strips wired in parallel on each pin.