Neopixels

#include <Arduino.h>
#include <Adafruit_NeoPixel.h>

#define PIXELS_NUM 30
#define PIXELS_PIN 22
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(PIXELS_NUM, PIXELS_PIN, NEO_GRB + NEO_KHZ800);


void setup(){
    Serial.begin(115200);
    delay(500);
    pixels.begin();
    for(int i=0; i<PIXELS_NUM; ++i){
        pixels.setPixelColor(i, pixels.Color(128,0,0));
    }
    pixels.show();
}

void loop(){
  delay(100);
}