// Include the required Wire library for I2C<br>
#include <Wire.h>

int x = 0;

void setup() {
  // Start the I2C Bus as Master
  Wire.begin();   
}

void loop() {
  Wire.beginTransmission(9); // transmit to device #9
  Wire.write(x);             // sends x 
  Wire.endTransmission();    // stop transmitting
  
  x++; // Advance x
  if (x > 5) x = 0; // reset x once it gets 6
  delay(1000);
}