#include <Adafruit_NeoPixel.h>   //include library

#define PIN            6  // Which pin on the Arduino is connected to the NeoPixels?
#define NUMPIXELS      5  // How many NeoPixels are attached to the Arduino?

int fadeSpeed = 5;

// int redFinal;  // set up a series of variables to hold your target color
// int greenFinal;
// int blueFinal;


// When we setup the NeoPixel library object, we tell it how many pixels, and which pin to use to send signals.
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin();
}

void loop() {

  customFader(200,0,100);

}





void customFader(int redFinal, int greenFinal, int blueFinal) {

 int redvalue = 255;  // set up a series of variables to hold the current color values as they fade from black to your target color
 int greenvalue = 255;
 int bluevalue = 255;

for (int fade = 0; fade <255; fade++){ // the fader loop runs through the whole RGB color range, from 0-255

 for(int led = 0; led <5; led++){ // the inner loop loads the color change onto each LED

      pixels.setPixelColor(led, redvalue, greenvalue, bluevalue); // this loads the current red, green and blue values onto each LED
     }

    if (redvalue >= redFinal){   // if the current red value is less than your target color, add one to the red value
      redvalue --;
    }
    else {
      redvalue = redvalue; // otherwise, show the target red value
    }

    if (greenvalue >= greenFinal){  // if the current green value is less than your target color, add one to the green value
      greenvalue --;
    }
    else {
      greenvalue = greenvalue;  // otherwise, set the green color to its current setting (the target setting
    }

        if (bluevalue >= blueFinal){ // if the blue value is less than the target, add one to make it closer to the target
      bluevalue --;
    }
    else {
      bluevalue = bluevalue; // otherwise, make the blue value equal to its current setting
    }
    pixels.show(); // show all the lights!
    delay(fadeSpeed); // keep them on for the length of time that you set in fade speed

}

// the second loop does exactly the same thing as the first loop, it just counts down from the target values to zero.
for (int fade = 0; fade <255; fade++){
  for(int led = 0; led <5; led++){
    pixels.setPixelColor(led, redvalue, greenvalue, bluevalue); //parameters are (LED number in chain, Red 0-255, Green 0-255, Blue 0-255)
    }
      if (redvalue < 255){
      redvalue ++;
    }
    else {
      redvalue = 255;
    }

    if (greenvalue < 255){
      greenvalue ++;
    }
    else {
      greenvalue = 255;
    }

        if (bluevalue <255){
      bluevalue ++;
    }
    else {
      bluevalue = 255;
    }
    pixels.show();
    delay(fadeSpeed);

  }
}