#include <Adafruit_NeoPixel.h>
int LedN = 20;
int Din = 12;
Adafruit_NeoPixel leds = Adafruit_NeoPixel(LedN, Din);

void setup() {
  // put your setup code here, to run once:
leds.begin();
}

void loop() {
  // put your main code here, to run repeatedly:
for (int i = 0; i < LedN; i++){
  leds.setPixelColor(i, leds.Color(104,160,232));
  leds.show();
  delay(500);

}
}