Generalized WIFI ESP8266 Node for receiving LED data to drive WS2801 Pixels
I wont publish the server code but here is a generic snippet of the server:
//Connect to your WIFI network then set up a UDP Multicast as follows
WiFiUDP Udp;
//then trasnmit your LED Data block as follows with a 3mili delay
Udp.beginPacketMulticast(IPAddress(239, 0, 0, 57), udpPort, WiFi.localIP(), 1);
Udp.write(dataBlock, blockSize);
delay(3);