View difference between Paste ID: YTqrxctJ and EqxrhDu0

 #include "FastLED.h"
 #define NUM_LEDS 31
 #define DATA_PIN 5
 #define CLOCK_PIN 6
 #define BLUE Red
 #define RED Blue
 #define GREEN Green
 
 
 CRGB leds[NUM_LEDS];
 
 void setup()
 {
        FastLED.addLeds<WS2801, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
        Serial.begin(9600);
 }
 
 void loop()
 {
   for (int i = 0; i <= NUM_LEDS; i++)
   {
    leds[i] = CRGB::Fuchsia ;
    FastLED.show();
    delay(30);
    leds[i] = CRGB::Black;
-   Serial.println(i);
+
 
   }
 
   for (int i = NUM_LEDS; i >= 0; i--)
   {
    leds[i] = CRGB::Fuchsia ;
    FastLED.show();
    delay(30);
-   Serial.println(i);
+
    FastLED.show();
   }
 }