Robbed.ino

// http://www.ebay.com/itm/SIMCOM-SIM900-Quad-band-GSM-GPRS-Shield-Development-Board-for-Arduino-Iduino-/200953716109 $30
// http://www.ebay.com/itm/2012-Version-Board-ATmega328P-UNO-R3-ATmega16U2-Free-USB-Cable-for-Arduino-/331036182607   $13.50

#include <SoftwareSerial.h>
#include <String.h>

SoftwareSerial mySerial(7, 8);
const int buttonPin = 2;
int buttonState = 0;
int buttonPrevState = 0;
const int ledPin =  13;

void setup()
{
  powerUpOrDown();
  pinMode(buttonPin, INPUT);   // software powerUp so we dont have to press the button to turn on shield
  mySerial.begin(19200);      // the GPRS baud rate
  Serial.begin(19200);       // the GPRS baud rate
  delay(500);
}

void loop()
{
   buttonState = digitalRead(buttonPin);
   if ((buttonState == HIGH) && (buttonPrevState == LOW))
   {
     SendTextMessage();            // send sms
     digitalWrite(ledPin, LOW);   // turn LED on:
   }
     else {digitalWrite(ledPin, HIGH);
   }
   buttonPrevState = buttonState;
   delay(100);
}

void SendTextMessage()
{
  mySerial.print("AT+CMGF=1\r");                     //Because we want to send the SMS in text mode
  delay(100);
  mySerial.println("AT + CMGS = \"+1XXXXXXXXXX\""); //send sms message, be careful need to add a country code before the cellphone number
  delay(100);
  mySerial.println("You're getting robbed!");      //the content of the message
  delay(100);
  mySerial.println((char)26);                     //the ASCII code of the ctrl+z is 26
  delay(100);
  mySerial.println();
}

void powerUpOrDown()
{
  pinMode(9, OUTPUT);
  digitalWrite(9,LOW);
  delay(1000);
  digitalWrite(9,HIGH);
  delay(2000);
  digitalWrite(9,LOW);
  delay(3000);
}

void ShowSerialData()
{
  while(mySerial.available()!=0)
    Serial.write(mySerial.read());
}