A simple burglar Alarm: Ethernet shield connection

Link

A simple burglar Alarm: Ethernet shield connection

Feature

Connect DHCP and Send email.

The most important things to keep in mind are:

1. ethernet shield ip settings
2. ethernet shield mac address
3. SMTP settings to send email

My router is in DHCP so it dynamically set the IP address.
No problems for the MAC address: it can be set as you need.

There are two ways to send an email with Ethernet Shield:

1. Temboo service has a library to send an email with Gmail account (instruction here )
2. SMTP2GO service to send up to 10 emails with its SMTP free service (here you can register )

I choose SMTP2GO cause I discovered Temboo too late when I finished deploying with SMTP2GO.
If someone uses Temboo let me know your opinion.

I used Nicolaj Joergensen code, it’s very clear and well explained.

Code

#include <SPI.h>;
#include <Ethernet.h>;
 
// Arduino network information
byte mac[] = {  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02 };
EthernetClient client;
char smtpServer[] = "smtpcorp.com";
void setup()
{
  Serial.begin(9600);  // for debug mode
  setupComm();
}
void loop()
{
  email("hallo");
  delay(1000);
}
//  ethernet shield connection init
void setupComm()
{
  Serial.println("Trying to connect");
  if (!Ethernet.begin(mac)){
    Serial.println("Failed to DHCP");
    // verifyng connection
    while(true);
  }
  delay(10000);
  // IP address is:
  Serial.print("IP address: ");
  for (byte thisByte = 0; thisByte < 4; thisByte++) {
    Serial.print(Ethernet.localIP()[thisByte], DEC);
    Serial.print(".");
  }
  Serial.println();
}
// now I send email
bool email(char* text)
{
  bool success = false;
  Serial.println("Sending email...");
  if (client.connect(smtpServer, 2525)){            //2525 is SMTP Server port
    Serial.println("connected");
    delay(100);
    client.println("EHLO arduino");
    for(int i=0; i<999; ++i){
      if(client.read() > 0)
        break;
    }
    Serial.println("responded");
    client.println("AUTH LOGIN");                     //see "http://base64-encoder-online.waraxe.us/"
    client.println("xxxxxxxxxx");                    //Type your username  and encode it
    client.println("yyyyyyyyyy");                   //Type your password  and encode it</p>
    // Put your "from" email address here
    client.println("MAIL FROM:<dumm@gmail.com>"); //Seems you can write what you want here...
    for(int i=0; i<999; ++i){
      if(client.read() > 0)
        break;
    }
    client.println("RCPT TO:<mail@mail.com>");
    for(int i=0; i<999; ++i){
      if(client.read() > 0)
        break;
    }
    client.println("DATA");
    for(int i=0; i<999; ++i){
      if(client.read() > 0)
        break;
    }
    //Sender
    client.println("from: mail@mail.com"); //Sender address
    client.println("to: mail@mail.com");  //Receiver address
    client.println("SUBJECT: From your arduino");
    client.println("");
    client.println(text);
    client.println(".");
    client.println("QUIT");
    for (int i = 0; i<999; ++i){
      if(i > 998){
        Serial.println("error: No response");
      }
      if(client.read() > 0)
        break;
    }
    success = true;
    client.println();
    Serial.println("end");
  }
  else {
    Serial.println("Failed");
    client.println("QUIT"); //Disconnection
  }
  client.stop();
  return success;
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