Published August 5, 2015 © CC BY-NC

Simple Preventive System with PIR Sensor and IFTTT

A PIR Sensor can detect someone who breaks into your House when I wasn't home. I can receive the notification on smart phone using IFTTT.

BeginnerFull instructions provided2,208

Simple Preventive System with PIR Sensor and IFTTT

Things used in this project

Hardware components

WIZnet WIZwiki-W7500

PIR-Sensor(HC-SR501)

On/Off Switch

Hand tools and fabrication machines

mbed compiler

IFTTT

pushover

Story

Diagram

If a switch has turned off, It is not working.
But the switch is turned on and catch the movements by the PIR sensor, WIZwiki-W7500 will send the results to the IFTTT.
IFTTT can use defined notification application at “That” Function. Then IFTTT can send information about sponsoring result to the user.

Schematic

The PIR module can be operated in 5V. you can just connect VCC, GND then Data pin to D8 on WIZwiki-W7500 board.
To connect the Analog pin with the switch. The reason is that recycling existing the shield board.

1 / 2

Parts

WIZwiki-W7500
- mbed enabled, Hardwired TCP/IP platform, It can send queries to IFTTT when the movements were caught.

PIR sensor
- HC-SR501 motion sensor, detect the motion.

Switch
- ON/OFF function.

Pushover(Android Notification Application)
- To send notification to your cellular phone.
- Pushover used instead of the Android notifications of the number of Actions.

Used Library

Basically, this project was made in mbed compiler.

IFTTT
- HTTP server information like IP and port is contained within IFTTT library. You can send a GET and a POST Query easily.
- https://developer.mbed.org/components/If-This-Then-That-IFTTT/
WIZnetInterface
- It can use Ethernet Interface with WIZwiki-W7500
- https://developer.mbed.org/teams/WIZnet/code/WIZnetInterface/
mbed
- mbed library for using mbed platform
- https://developer.mbed.org/handbook/Homepage/

How to make it

1. IFTTT

After sign in IFTTT. To make the Maker channel. https://ifttt.com/maker

Create the recipe in My Recipes.
Select the ‘maker’ at This function. Then select a ‘receive a web request’.
Select the pushover at That function. Then to select a ‘send a notification’.
Type the message and URL in the Action Field.

my maker channelhttps://ifttt.com/recipes/312069-stopthief-wizwiki-w7500-mbed-platform-ifttt-maker-channel

In the above link, you can just add the recipe easily.
(Note: After making the maker channel you have to copy the Secret key from IFTTT.)

2. hardware

Wire the PIR Sensor’s Data pin to D8 on WIZwiki-W7500.
To connect the Analog 0 pin (A0) with the switch.

3. Source code

Source code: https://developer.mbed.org/users/jehoon/code/StopThief/

For using the WIZnetInterfaceinmbed.you can read the following link below.(Korean)
- http://embeddist.blogspot.kr/2015/07/armmbed-wiznetinterface.html
Write the Event name and Secret Key.
When a specific event is triggered. WIZwiki-W7500 execute ifttt.triger() function. it can send Query with ifttt.addIngredients() function’s saved value.

4. Android Application

The Pushover application was installed in your Cellular phone.

Results

1 / 4

References

mbed: https://developer.mbed.org/
WIZwiki-W7500 mbed platform: https://developer.mbed.org/platforms/WIZwiki-W7500/#overview
How to use WIZnetInterface(korean): http://embeddist.blogspot.kr/2015/07/armmbed-wiznetinterface.html
About IFTTT: https://ifttt.com/wtf
Pushover(notification app): https://pushover.net/
HC-SR501(PIR Sensor) Datasheet: http://www.datasheetspdf.com/datasheet/HC-SR501.html
Recipe: https://ifttt.com/recipes/312069-stopthief-wizwiki-w7500-mbed-platform-ifttt-maker-channel

Code

Untitled file

#include "mbed.h"
#include "EthernetInterface.h"
#include "TCPSocketConnection.h"
#include "ifttt.h"
 
#define YourEventName "YOUREVENT"
#define YourSecretKey "YOURKEY"
 
#define DuringSafety 5  //hours
 
EthernetInterface eth;
Serial pc(USBTX, USBRX); // tx, rx
DigitalOut led(LED1);
AnalogIn sw(A0);
DigitalIn pir(D8,PullUp);
Timer timer;
 
int main()
{ 
    int phy_link;
    int flag = 0;
    int onetimeflag = 0;
    float sec = 0.0;
    
    pc.baud(115200);
   printf("Wait a second...\r\n");
    uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0x12, 0x34, 0x56}; 
    eth.init(mac_addr); //Use DHCP
    eth.connect();
    
    do{
         phy_link = eth.ethernet_link();
         printf("...");
         wait(2);
    }while(!phy_link);
    printf("\r\nIP Address is %s \r\n", eth.getIPAddress());
    TCPSocketConnection sock;
 
    // Initialize ifttt object, add up to 3 optional values, trigger event.
    IFTTT ifttt(YourEventName,YourSecretKey, &sock); // EventName, Secret Key, socket to use
 
 
    while(1) {
        
        if(!pir){
            led = 0;
            onetimeflag = 0;
            printf("Safety\r\n");
            if(!flag){
                timer.start();
                flag = 1;
            }
            wait(1);
        }
        else if(pir && (float)sw.read()>=0.9 && !onetimeflag){
            led=1;
            onetimeflag=1;
            printf("Thief Detected\r\n");
            ifttt.addIngredients("===WARNING===","The Thief was found","Report him to the police");
            ifttt.trigger();   
            timer.reset();
            wait(1);
        }
        sec = timer.read();
        if(sec > DuringSafety*3600 && (float)sw.read()>=0.9){
            timer.reset();
            ifttt.addIngredients("Your home in safety during",(char*)DuringSafety,"hours!");
            ifttt.trigger();    
        }
    }
  
  
}

Credits

Jehoon song

4 projects • 6 followers

Simple Preventive System with PIR Sensor and IFTTT

Things used in this project

Hardware components

Hand tools and fabrication machines

Story

Diagram

Schematic

Parts

Used Library

How to make it

1. IFTTT

2. hardware

3. Source code

4. Android Application

Results

References

Schematics

schematic.png

Code

Untitled file

Credits

Jehoon song

Comments

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Simple Preventive System with PIR Sensor and IFTTT

Simple Preventive System with PIR Sensor and IFTTT

Things used in this project

Hardware components

Hand tools and fabrication machines

Story

Diagram

Schematic

Parts

Used Library

How to make it

1. IFTTT

2. hardware

3. Source code

4. Android Application

Results

References

Schematics

schematic.png

Code

Untitled file

Credits

Jehoon song

Comments

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