#include <Wire.h>
#include <Adafruit_NeoPixel.h>


// Include the required Wire library for I2C<br>
#define numpixels 1
#define pixelpower 11
#define pixelpin 12
//#define bufsize 25

//char buf[bufsize];
//int count = 0;
//
// setup
//
Adafruit_NeoPixel pixel(numpixels, pixelpin, NEO_GRB + NEO_KHZ800);
int x = 0;

void setup() {
  // Start the I2C Bus as Master
  //  Wire.setSDA(D4);
  //  Wire.setSCL(D5);
  Wire.begin();
  Serial.begin();
  pixel.begin();
  pinMode(pixelpower, OUTPUT);
  digitalWrite(pixelpower, HIGH);
}
void loop() {
  Wire.beginTransmission(9); // transmit to device #9
  Wire.write(x);              // sends x
  Wire.endTransmission();    // stop transmitting

  if (x == 0)
  {
    pixel.setPixelColor(0, pixel.Color(255, 0, 0));
    pixel.show();
    delay(200);
  }
  if (x == 1)
  {
    pixel.setPixelColor(0, pixel.Color(0, 255, 0));
    pixel.show();
    delay(200);
  }
  if (x == 2)
  {
    pixel.setPixelColor(0, pixel.Color(0,0, 255));
    pixel.show();
    delay(200);
  }
  if (x == 3)
  {
    pixel.setPixelColor(0, pixel.Color(255, 255, 0));
    pixel.show();
    delay(200);
  }
  if (x == 4)
  {
    pixel.setPixelColor(0, pixel.Color(0, 255, 255));
    pixel.show();
    delay(200);
  }
  if (x == 5)
  {
    pixel.setPixelColor(0, pixel.Color(255, 0, 255));
    pixel.show();
    delay(200);
  }
  x++; // Increment x
  if (x > 5) x = 0; // `reset x once it gets 6
  delay(500);


}