#include <Adafruit_NeoPixel.h>

#define LED_PIN 6
#define LED_COUNT 24

Adafruit_NeoPixel ring(LED_COUNT, LED_PIN, NEO_RGB + NEO_KHZ800);

void setup() {
  ring.begin();
  ring.show();
  ring.setBrightness(255);
}
void loop() {
  for (int i = 0; i < ring.numPixels(); i++) {
    ring.setPixelColor(i, random(255), random(255), random(255), 0);
    ring.show();
    delay(50);
  }
  for (int i = ring.numPixels() - 1; i >= 0; i--) {
    ring.setPixelColor(i, random(255), random(255), random(255), 0);
    ring.show();
    delay(50);
  }
}