//neo pixel interfacing 
#include <Adafruit_NeoPixel.h>
#define NUMPIXLES 1
#define PIN_NEOPIXEL 4
Adafruit_NeoPixel pixels(NUMPIXLES,PIN_NEOPIXEL,NEO_GRB + NEO_KHZ800);
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pixels.begin();
  pixels.setBrightness(200);
  Serial.println("Hello, ESP32!");
}

void loop() {
  pixels.fill(0xFF0000);functionR();//RED
  pixels.fill(0x00FF00);functionR();//GREEN
  pixels.fill(0x0000FF);functionR();//BLUE
  pixels.fill(0x000000);functionR();//WHITE
  pixels.fill(0xFFC0CB);functionR();//PINK
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}
void functionR () {
  pixels.show();
  delay(500);
}