#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

#define PIN_NEO_PIXEL  4   // Arduino pin that connects to NeoPixel
#define NUM_PIXELS     5  // The number of LEDs (pixels) on NeoPixel

Adafruit_NeoPixel NeoPixel(NUM_PIXELS, PIN_NEO_PIXEL, NEO_GRB + NEO_KHZ800);

void setup() {
  NeoPixel.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
}

void loop() {
  //ขวา
  NeoPixel.clear(); // set all pixel colors to 'off'. It only takes effect if pixels.show() is called

  // turn pixels to green one by one with delay between each pixel
  for (int pixel = 0; pixel < NUM_PIXELS; pixel++) { // for each pixel
    NeoPixel.setPixelColor(pixel, NeoPixel.Color(255, 255, 255)); // it only takes effect if pixels.show() is called
    NeoPixel.show();   // send the updated pixel colors to the NeoPixel hardware.

    delay(100); // pause between each pixel
  }

  // turn off all pixels for two seconds
  NeoPixel.clear();
  NeoPixel.show(); // send the updated pixel colors to the NeoPixel hardware.
  delay(0);     // off time

  // turn pixels to green one by one with delay between each pixel
  for (int pixel = 0; pixel < NUM_PIXELS; pixel++) { // for each pixel
    NeoPixel.setPixelColor(pixel, NeoPixel.Color(255, 255, 255)); // it only takes effect if pixels.show() is called
    NeoPixel.show();   // send the updated pixel colors to the NeoPixel hardware.

    delay(100); // pause between each pixel
  }

  // turn off all pixels for two seconds
  NeoPixel.clear();
  NeoPixel.show(); // send the updated pixel colors to the NeoPixel hardware.
  delay(0);     // off time

  // turn pixels to green one by one with delay between each pixel
  for (int pixel = 0; pixel < NUM_PIXELS; pixel++) { // for each pixel
    NeoPixel.setPixelColor(pixel, NeoPixel.Color(255, 255, 255)); // it only takes effect if pixels.show() is called
    NeoPixel.show();   // send the updated pixel colors to the NeoPixel hardware.

    delay(100); // pause between each pixel
  }

  // turn off all pixels for two seconds
  NeoPixel.clear();
  NeoPixel.show(); // send the updated pixel colors to the NeoPixel hardware.
  delay(0);     // off time

  // turn on all pixels to red at the same time for two seconds
  for (int pixel = 0; pixel < NUM_PIXELS; pixel++) { // for each pixel
    NeoPixel.setPixelColor(pixel, NeoPixel.Color(255, 255, 255)); // it only takes effect if pixels.show() is called
  }
  //NeoPixel.show(); // send the updated pixel colors to the NeoPixel hardware.
  //delay(2000);     // on time
  //exit(0);
}