#include <Adafruit_NeoPixel.h>

#define LED_PIN    2
#define NUM_LEDS   49
#define DELAY_TIME 100
#define MAX_RUN_TIME 3000

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);
unsigned long lastUpdateTime = 0;

void setup() {
  strip.begin();
  strip.show();
}

void loop() {
  flashingRandomLights();
}


//All code for flashingRandomLights
void flashingRandomLights() {
  unsigned long currentTime = millis();
  if (currentTime - lastUpdateTime >= DELAY_TIME) {
    fillRandomColors();
    lastUpdateTime = currentTime;
  }
  
  if (currentTime >= MAX_RUN_TIME) {
    clearLEDs();
    while (true) {} 
  }
}

void fillRandomColors() {
  for(int i = 0; i < NUM_LEDS; i++) {
    strip.setPixelColor(i, random(256), random(256), random(256));
  }
  strip.show();
}

void clearLEDs() {
  for(int i = 0; i < NUM_LEDS; i++) {
    strip.setPixelColor(i, 0);
  }
  strip.show();
}