Boom barrier and Traffic light control with Arduino via Ethernet

    code: #include <SPI.h> // needed for Arduino versions later than 0018 #include <Ethernet.h> // Ethernet board connected - Uses A0, A1, (D2 or D4), D10, D11, D12, D13 #include <EthernetUdp.h> // UDP library from: 12/30/2008 byte mac[] = { 0x90, 0xA2, 0xDA, 0x0D, 0x78, 0xE0 }; // <------- PUT YOUR MAC Address Here byte ip[] = { 10, 195, 82, 251 }; // <------- PUT YOUR IP Address Here unsigned int localPort = 8888; // Local IP port to listen on byte gateway[] = { 10, 195, 82, 1 }; // <------- PUT YOUR ROUTERS IP Address to which your shield is connected Here byte subnet[] = { 255, 255, 255, 0 }; // <------- It will be as it is in most of the cases EthernetServer server(80); // <------- It's Defaulf Server Port for Ethernet Shield char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; // buffer to hold incoming packet EthernetUDP Udp; // An EthernetUDP instance to let us send and receive packets over UDP int PinA = 3; // Switch Pin 5 int PinB = 4; int PinC = 5; // Switch Pin 6 void setup() { // run setup only once on boot Ethernet.begin(mac, ip, gateway, subnet); server.begin(); Udp.begin(localPort); // Start UDP Connection pinMode(PinA, OUTPUT); // attach the pin pinMode(PinB, OUTPUT); pinMode(PinC, OUTPUT); // attach the pin digitalWrite(PinA, LOW); digitalWrite(PinB, HIGH); digitalWrite(PinC, HIGH); } // end of setup void loop() // Start Running System { int packetSize = Udp.parsePacket(); // if there's data available, read a packet if(packetSize) { int read = Udp.read(packetBuffer,UDP_TX_PACKET_MAX_SIZE); // read the packet into packetBufffer packetBuffer[read] = 0; char ch = packetBuffer[0]; switch(ch) { case '0': // if 0 is sent via udp then do this -->> digitalWrite(PinA, LOW); // Turn PinA Off break; // end of case 0 case '1': // if 1 is sent via udp then do this -->> digitalWrite(PinA, HIGH); // Turn PinA On break; // end of case 1 case '2': // if 2 is sent via udp then do this -->> digitalWrite(PinB, LOW); // Turn PinB Off break; // end of case 2 case '3': // if 3 is sent via udp then do this -->> digitalWrite(PinB, HIGH); // Turn PinB On break; // end of case 3 case '4': // if 3 is sent via udp then do this -->> digitalWrite(PinC, LOW); // Turn PinB On break; // end of case 3 case '5': // if 3 is sent via udp then do this -->> digitalWrite(PinC, HIGH); // Turn PinB On break; // end of case 3 default : // if recived info via udp and not found in the case do this -->> break; // end of case not found } } delay(15); // waits 15ms for udp input wait ... } // end system run, but now loop and start system run again?