   Udp.write(lowByte(0x00));
 
   // site mac address
-  for(int i = 0; i < sizeof(mac); i++) {
-    Udp.write(lowByte(mac[i]));
+  for(int i = 0; i < sizeof(site_mac); i++) {
+    Udp.write(lowByte(site_mac[i]));
   }
 
   // reserved3

  Serial.print(lowByte(0x00), HEX);
  Serial.print(" ");

  // buldAddress mac address
  for(int i = 0; i < sizeof(mac); i++) {
    Serial.print(lowByte(mac[i]), HEX);
    Serial.print(" ");

 Set the following variables below to suit your Arduino and network 
 environment:
 - mac (unique mac address for your arduino)
 - site_mac (same as mac (above))
 - redPin (PWM pin for RED)
 - greenPin  (PWM pin for GREEN)
 - bluePin  (PWM pin for BLUE)
