PartyHardStrand.ino

#include <FastLED.h>

#define LED_PIN     6
#define NUM_LEDS    20
#define BRIGHTNESS  255
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];

#define UPDATES_PER_SECOND 50

unsigned int brightCycles = 0;

void setup() {
    delay( 3000 );
    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.setBrightness(BRIGHTNESS);
}

void loop()
{    
    if(brightCycles > 1) {
      FastLED.setBrightness(0);
      brightCycles = 0;
    } else {
      FastLED.setBrightness(BRIGHTNESS);
      
      for(int i = 0; i < NUM_LEDS; i++) {
        leds[i] = CHSV(random(0, 255), 255, 255);
      }
      
      brightCycles++; 
    }
    
    FastLED.show();
    FastLED.delay(1000 / UPDATES_PER_SECOND);
}