#include <Adafruit_NeoPixel.h>

#define PIN 6
#define NUMPIXELS 8

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

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

void loop() {
  for (int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(255, 0, 0)); // Red
    pixels.show();
    delay(100);
  }
}