Tragic light,boom barrier control with arduino via Ethernet

component:

1.Arduino Uno R3 ATmega328P ATMEGA16U2 Compatible with USB Cable

2.Ethernet W5100 Shield Network Expansion Board W/

3. 2 CHANNEL 5V RELAY BOARD MODULE RELAY EXPANSION BOARD

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​