Making an ON/OFF switch for WeMo Switch with Arduino+Ethernet shield

On this project I use an arduino uno with ethernet shield to control a Wemo Switch with a On-Off switch.

For this project you need:

1. Arduino uno
2. Arduino ethernet shield
3. ON-OFF Switch
4. 10k Ohm Resistor

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Schematic

Arduino controls the wemo device over local network. When the status of the hardware switch changes, the arduino sends a SOAP call to the Wemo device to change the power status.

Here is the code for the Arduino:

(You need to change the wemoIP and wemoPort variables with ip/port of the wemo device)

	#include <Ethernet.h>
	#include <SPI.h>
	byte mac[] = { 0x90,0xA2,0xDA,0x00,0x55,0x8D};
	EthernetClient client;
	int inPin = 8;
	int state = HIGH;
	int reading;
	char wemoIP[ ] = "192.168.2.126";
	int wemoPort = 49153;
	void switchON(){
	Serial.println("switchON");
	String data1;
	data1+="<?xml version=\"1.0\" encoding=\"utf-8\"?><s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\"><s:Body><u:SetBinaryState xmlns:u=\"urn:Belkin:service:basicevent:1\"><BinaryState>1</BinaryState></u:SetBinaryState></s:Body></s:Envelope>"; // Use HTML encoding for comma's
	if (client.connect(wemoIP,wemoPort)) {
	client.println("POST /upnp/control/basicevent1 HTTP/1.1");
	client.println("Content-Type: text/xml; charset=utf-8");
	client.println("SOAPACTION: \"urn:Belkin:service:basicevent:1#SetBinaryState\"");
	client.println("Connection: keep-alive");
	client.print("Content-Length: ");
	client.println(data1.length());
	client.println();
	client.print(data1);
	client.println();
	}
	if (client.connected()) {
	client.stop();
	}
	}
	void switchOFF(){
	Serial.println("switchOFF");
	String data1;
	data1+="<?xml version=\"1.0\" encoding=\"utf-8\"?><s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\"><s:Body><u:SetBinaryState xmlns:u=\"urn:Belkin:service:basicevent:1\"><BinaryState>0</BinaryState></u:SetBinaryState></s:Body></s:Envelope>"; // Use HTML encoding for comma's
	if (client.connect(wemoIP,wemoPort)) {
	client.println("POST /upnp/control/basicevent1 HTTP/1.1");
	client.println("Content-Type: text/xml; charset=utf-8");
	client.println("SOAPACTION: \"urn:Belkin:service:basicevent:1#SetBinaryState\"");
	client.println("Connection: keep-alive");
	client.print("Content-Length: ");
	client.println(data1.length());
	client.println();
	client.print(data1);
	client.println();
	}
	if (client.connected()) {
	client.stop();
	}
	}
	void setup()
	{
	pinMode(inPin, INPUT);
	Serial.begin(9600);
	Ethernet.begin(mac);
	delay(1000);
	Serial.println("connecting...");
	// print your local IP address:
	Serial.print("My IP address: ");
	for (byte thisByte = 0; thisByte < 4; thisByte++) {
	// print the value of each byte of the IP address:
	Serial.print(Ethernet.localIP()[thisByte], DEC);
	Serial.print(".");
	}
	Serial.println();
	}
	void loop(){
	reading = digitalRead(inPin);
	if (reading != state){
	if (reading==HIGH){
	switchON();
	delay(1000);
	}else{
	switchOFF();
	delay(1000);
	}
	state = reading;
	}
	}

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