#include <Adafruit_NeoPixel.h>

#define PIN 3
#define LED_COUNT 512
#define BAUD 1000000

Adafruit_NeoPixel strip = Adafruit_NeoPixel(LED_COUNT, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show();
  Serial.begin(BAUD);
  Serial.setTimeout(500);
}

// main program
void loop() {

  byte buf[1];
  unsigned int c=0;

  while(Serial.read() != 255){
    if(c > 100000){
        for (uint16_t i = 0; i < LED_COUNT; i++){
          strip.setPixelColor(i, strip.Color(0,0,0));
        }
        strip.show();
    }
    c++;
  }
  
  if(c>1){
  }

 
  for (uint16_t i = 0; i < LED_COUNT; i++)
  {
    char col[3];
    Serial.readBytes(col, 3);
    strip.setPixelColor(i, strip.Color(col[0], col[1], col[2]));
  }
  
  strip.show();
}