#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
#define PinNeopixel        6
#define NeopixelLedNum     12
#define DelayVal           100
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NeopixelLedNum, PinNeopixel, NEO_GRB + NEO_KHZ800);
void setup() {
  pixels.begin();
}
void loop() {
  
  for (int i = 0; i < NeopixelLedNum; i++) {
   
    int PrevLed = i - 1;
    if (PrevLed == -1) PrevLed = 11;
   
     pixels.setPixelColor(PrevLed, pixels.Color(0, 0, 255 ));
    pixels.setPixelColor(i, pixels.Color(255, 0, 0 ));
   
    pixels.show();
    delay(DelayVal);
  }
}