//16
//96
#include <FastLED.h>;
CRGB leds[16];

void setup() {
  // put your setup code here, to run once:
  FastLED.addLeds<WS2812, 7, GRB>(leds, 16);
  Serial.begin(9600);
}

void clearleds(bool draw = true) {
  for (int i = 0;i<=16;i++) {
    leds[i] = CRGB(0,0,0);
  }
  if (draw) {FastLED.show();}
}

void LEDRGBit() {
  int R;
  int B;
  int G;
  for (int it=0;it<=1536;it++) {
    for (int L=0;L<=15;L++) {
      int rgb_val = (it+(L*96))%1530;
      switch (rgb_val/255) {
        case 0:{R=255;G=rgb_val%255;B=0;break;};
        case 1:{R=255-(rgb_val%255);G=255;B=0;break;};
        case 2:{R=0;G=255;B=rgb_val%255;break;};
        case 3:{R=0;G=255-(rgb_val%255);B=255;break;};
        case 4:{R=rgb_val%255;G=0;B=255;break;};
        case 5:{R=255;G=0;B=255-(rgb_val%255);break;};
      }
      //Serial.print("Value: ");
      //Serial.print(rgb_val/255);
      //Serial.print("     ");
      //Serial.print(R);
      //Serial.print("     ");
      //Serial.print(G);
      //Serial.print("     ");
      //Serial.print(B);
      //Serial.print("     ");
      //Serial.println(it);
      leds[L] = CRGB(R,G,B);
    }
    FastLED.show();
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  //leds[0] = CRGB(0,255,0);
  //FastLED.show();
  //clearleds();
  LEDRGBit();
}