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


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

long int setMillis;

Adafruit_NeoPixel pixel(numpixels, pixelpin, NEO_GRB + NEO_KHZ800);
int x = 0;

void setup() {

  Wire.begin();
  Serial.begin();
  pixel.begin();
  pinMode(pixelpower, OUTPUT);
  digitalWrite(pixelpower, HIGH);
  setMillis = millis();
}
void loop() {
  Wire.beginTransmission(9); 
  Wire.write(x);             
  Wire.endTransmission(); 

//  long int setMillis = millis();
  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);
  }

  long int nowMillis = millis();

  if (nowMillis - setMillis > 200)
  {
    x++; // Increment x
    setMillis = millis();
  }
  if (x > 5)
  {
    x = 0;
  } // `reset x once it gets 6

//  delay(200);


}