Introduction

In this project, I am going to show you how to detect someone stealing your valuable stuff. If detected, PHPoC sends a notification via Gmail and makes an alert sound and light.



Demonstration





Things Used In This Project
  • PHPoC Blue
  • SparkFun Force Sensor
  • Resistor 3.3k ohm
  • PHPoC 4-Port Relay Expansion Board (T-type)
  • Warning Lights & Electric Horns


Wiring Diagram
  • Stack PHPoC Relay Board on PHPoC Blue
  • Connect Force sensor to PHPoC Blue as below image.
  • Connect Warning Lights & Electric Horns to port 0 of Relay Board
Click image for larger version

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Click image for larger version

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Detecting Something is Taken Away

To detect treasure present or not, I put the treasure on the force sensor. This sensor let us know how heavy the treasure is. If output value of sensor is below a threshold, it means the treasure is not present and someone took it away.

Electronic part is hidden below table
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Laptop overlays force sensor

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Electronic part should be hidden under table.

Handling Event

If event is detected, PHPoC will make an alert sound and light, and send a Gmail notification to owner.

Source Code

<task0.php>
PHP Code:
<?php

if(_SERVER("REQUEST_METHOD"))
    exit; 
// avoid php execution via http request

include_once "/lib/sd_340.php";
include_once 
"/lib/sn_dns.php";
include_once 
"/lib/sn_esmtp.php";
include_once 
"/lib/sd_spc.php";

define("THRESHOLD"50); // in ADC value

function send_gmail()
{
    
esmtp_account("[email protected]""PHPoC");
    
esmtp_auth("your_account""your_password");
    
esmtp_msa("smtp.gmail.com"465);

    
$time date("Y-M-d H:i:s"time());

    
$subject "Alert: Your treasure is being taken away";
    
$message  "Location: Planet Earth\r\n";
    
$message .= "Time: $time\r\n";
    
$message .= "Your treasure is being taken away\r\n";

    
$msg esmtp_send("[email protected]""Boss"$subject$message);

    if(
$msg == "221")
        return 
true;
    else
        return 
false;
}

spc_reset();
spc_sync_baud(115200);
adc_setup(00); // adc0, channel 0

$obj_present false;

while(
1)
{
    
$adc_in adc_in(030);

    if(
$adc_in THRESHOLD)
    {

        if(
$obj_present)
        {
            
//Alert
            
spc_request(144"set 0 output high");
            
// send notification
            
while(!send_gmail())
                ;

            
$obj_present false;
        }
    }
    else
    {
        
$obj_present true;
        
spc_request(144"set 0 output low");
    }
}

?>