#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif
int PIN   =   LED_BUILTIN;
#define NUMPIXELS 10


Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define DELAYVAL 500 // Time (in milliseconds) to pause between pixels

void setup() {
pixels.begin();
}

void loop() {
pixels.clear();
pixels.setBrightness(0);
pixels.setPixelColor(0, pixels.Color(255, 255, 255));
pixels.setPixelColor(1, pixels.Color(255, 255, 255));
pixels.setPixelColor(2, pixels.Color(255, 255, 255));
pixels.setPixelColor(3, pixels.Color(255, 255, 255));
pixels.setPixelColor(4, pixels.Color(255, 255, 255));
pixels.setPixelColor(5, pixels.Color(255, 255, 255));
pixels.setPixelColor(6, pixels.Color(255, 255, 255));
pixels.setPixelColor(7, pixels.Color(255, 255, 255));
pixels.setPixelColor(8, pixels.Color(255, 255, 255));
pixels.setPixelColor(9, pixels.Color(255, 255, 255));

pixels.show();
}