include

define PIN 6

define NUM_LEDS 4

define BRIGHTNESS 50

// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_RGB Pixels are wired for RGB bitstream
// NEO_GRB Pixels are wired for GRB bitstream, correct if colors are swapped upon testing
// NEO_RGBW Pixels are wired for RGBW bitstream
// NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels)
// NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip), correct for neopixel stick
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRBW + NEO_KHZ800);

void setup() {

strip.setBrightness(BRIGHTNESS);
strip.begin();
strip.show(); // Initialize all pixels to ‘off’
}

void loop() {
// Some example procedures showing how to display to the pixels:
colorWipe(strip.Color(255, 0, 0), 50); // Red
colorWipe(strip.Color(0, 255, 0), 50); // Green
colorWipe(strip.Color(0, 0, 255), 50); // Blue
colorWipe(strip.Color(0, 0, 0, 255), 50); // White

}
void animationExperiment(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}

void pulseWhite(uint8_t wait) {
for(int j = 0; j < 256 ; j++){
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, j ) );
}
delay(wait);
strip.show();
}

for(int j = 255; j >= 0 ; j–){
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, j ) );
}
delay(wait);
strip.show();
}
}

void rainbowFade2White(uint8_t wait, int rainbowLoops, int whiteLoops) {
float fadeMax = 100.0;
int fadeVal = 0;
uint32_t wheelVal;
int redVal, greenVal, blueVal;

for(int k = 0 ; k < rainbowLoops ; k ++){

for(int j=0; j<256; j++) { // 5 cycles of all colors on wheel

  for(int i=0; i< strip.numPixels(); i++) {

    wheelVal = Wheel(((i * 256 / strip.numPixels()) + j) & 255);

    redVal = red(wheelVal) * float(fadeVal/fadeMax);
    greenVal = green(wheelVal) * float(fadeVal/fadeMax);
    blueVal = blue(wheelVal) * float(fadeVal/fadeMax);

    strip.setPixelColor( i, strip.Color( redVal, greenVal, blueVal ) );

  }

  //First loop, fade in!
  if(k == 0 && fadeVal < fadeMax-1) {
      fadeVal++;
  }

  //Last loop, fade out!
  else if(k == rainbowLoops - 1 && j > 255 - fadeMax ){
      fadeVal--;
  }

    strip.show();
    delay(wait);
}

}

delay(500);

for(int k = 0 ; k < whiteLoops ; k ++){

for(int j = 0; j < 256 ; j++){

    for(uint16_t i=0; i < strip.numPixels(); i++) {
        strip.setPixelColor(i, strip.Color(0,0,0, j ) );
      }
      strip.show();
    }

    delay(2000);
for(int j = 255; j >= 0 ; j--){

    for(uint16_t i=0; i < strip.numPixels(); i++) {
        strip.setPixelColor(i, strip.Color(0,0,0, j ) );
      }
      strip.show();
    }

}

delay(500);

}

void whiteOverRainbow(uint8_t wait, uint8_t whiteSpeed, uint8_t whiteLength ) {

if(whiteLength >= strip.numPixels()) whiteLength = strip.numPixels() – 1;

int head = whiteLength – 1;
int tail = 0;

int loops = 3;
int loopNum = 0;

static unsigned long lastTime = 0;

while(true){
for(int j=0; j<256; j++) { for(uint16_t i=0; i= tail && i <= head) || (tail > head && i >= tail) || (tail > head && i <= head) ){
strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
}
else{
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}

  }

  if(millis() - lastTime > whiteSpeed) {
    head++;
    tail++;
    if(head == strip.numPixels()){
      loopNum++;
    }
    lastTime = millis();
  }

  if(loopNum == loops) return;

  head%=strip.numPixels();
  tail%=strip.numPixels();
    strip.show();
    delay(wait);
}

}

}
void fullWhite() {

for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
}
  strip.show();

}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
uint16_t i, j;

for(j=0; j<256 * 5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait);
}
}

void rainbow(uint8_t wait) {
uint16_t i, j;

for(j=0; j<256; j++) {
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel((i+j) & 255));
}
strip.show();
delay(wait);
}
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r – g – b – back to r.
uint32_t Wheel(byte WheelPos) {
WheelPos = 255 – WheelPos;
if(WheelPos < 85) {
return strip.Color(255 – WheelPos * 3, 0, WheelPos * 3,0);
}
if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(0, WheelPos * 3, 255 – WheelPos * 3,0);
}
WheelPos -= 170;
return strip.Color(WheelPos * 3, 255 – WheelPos * 3, 0,0);
}

uint8_t red(uint32_t c) {
return (c >> 8);
}
uint8_t green(uint32_t c) {
return (c >> 16);
}
uint8_t blue(uint32_t c) {
return (c);
}