Multiple Strips In One Array

// MultipleStripsInOneArray - see https://github.com/FastLED/FastLED/wiki/Multiple-Controller-Examples for more info on
// using multiple controllers.  In this example, we're going to set up four NEOPIXEL strips on three
// different pins, each strip will be referring to a different part of the single led array

#include "FastLED.h"

#define NUM_STRIPS 12
#define NUM_LEDS_PER_STRIP 84
#define NUM_LEDS NUM_LEDS_PER_STRIP * NUM_STRIPS

CRGB leds[NUM_STRIPS * NUM_LEDS_PER_STRIP];


void setup() {

  // tell FastLED there's 60 NEOPIXEL leds on pin 10, starting at index 0 in the led array
  FastLED.addLeds<NEOPIXEL, 2>(leds, 0, NUM_LEDS_PER_STRIP);

  // tell FastLED there's 60 NEOPIXEL leds on pin 11, starting at index 60 in the led array
  FastLED.addLeds<NEOPIXEL, 3>(leds, NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);

  // tell FastLED there's 60 NEOPIXEL leds on pin 12, starting at index 120 in the led array
  FastLED.addLeds<NEOPIXEL, 4>(leds, 2 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 5>(leds, 0, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 6>(leds, NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 7>(leds, 2 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);




  FastLED.addLeds<NEOPIXEL, 8>(leds, 0, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 9>(leds, NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 10>(leds, 2 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 11>(leds, 0, NUM_LEDS_PER_STRIP);

  FastLED.addLeds<NEOPIXEL, 12>(leds, NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);




  FastLED.addLeds<NEOPIXEL, 12>(leds, 2 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP);


}

void loop() {
  for(int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB::Red;
    FastLED.show();
    leds[i] = CRGB::Black;
    delay(100);
  }
}