Neopixel

main.cpp

#include "neopixel.h"

#define PIXEL_COUNT 29
#define PIXEL_PIN D2
#define PIXEL_TYPE WS2812B

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);
void setup() {
  strip.begin();
  strip.show();
}
void loop() {
  int ledNumber = 0;
  int red = 255;
  int green = 0;
  int blue = 0;
  int brightness = 0;
  strip.setPixelColor(0, strip.Color(red, green, blue, brightness));
  strip.show();
}