RFID Security System. by Balding_Lama

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Linette Watts
5 years ago
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The prototype is build around personal RFID chips which should be used everytime a person enters or leaves.

1 instructables RFID Security System by Balding_Lama This is an alarm system which you can use at home. The alarm system is capable of telling you who's inside your home and is also capable of automatically activating an alarm system when nobody is inside. The prototype is build around personal RFID chips which should be used everytime a person enters or leaves. For the alarmsystem a motion sensor and an active buzzer, which can be replace with a solid sirene, is used. To monitor the inhabitants i've also set up a webserver on a raspberry pi which speaks with a MySQL database. The system itself has three components. 1. An Arduino Uno which drives al the components and sends serial data. 2. A Raspberry PI which reads serial input from the Arduino and runs the webserver. 3. The casing of the prototype which is a little fuse box with a door RFID Security System: Page 1

Step 1: Required Components and Materials The required compontents are easy to find and relatively cheap. Most of the components can be bought at electronics/ prototyping webstores.

2 Step 1: Required Components and Materials The required compontents are easy to find and relatively cheap. Most of the components can be bought at electronics/ prototyping webstores. Arduino Uno Raspberry Pi RFID RC522 reader writer module MIFARE PICC HC-SR501 PIR motion detector 2 x LED active buzzer small fuse box wires solder iron and tin 1 x 1 K resistance Motion Sensor 2. RFID reader 3. active buzzer 4. 1K ohm resistance 5. PICC card 6. PICC key ring RFID Security System: Page 2

Step 2: Getting Everything Into the Fuse Box For the casing of the prototype you can use or build anything you want important to keep in mind is that the

I used a simpel fuse box with a door, which comes in handy for the RFID reader.

For the next steps you'll need a drilling machine, a screwdriver, some bolts, and second adhesive. 1.

Drill some holes into the frontpanel for placing the RFID reader. 2. Make sure you solder the RFID reader because some models have bad contacts. 3.

3 Step 2: Getting Everything Into the Fuse Box For the casing of the prototype you can use or build anything you want important to keep in mind is that the signal of the RFID reader is quite weak and is not always able to penetrate through heavier matterials. I used a simpel fuse box with a door, which comes in handy for the RFID reader. If you've chosen for a fusebox like mine, the electronics can be simply placed by following these 6 steps. For the next steps you'll need a drilling machine, a screwdriver, some bolts, and second adhesive. 1. Start by drilling holes into the back plate of the fuse box for placing the arduino and raspberry pi into it. Drill some holes into the frontpanel for placing the RFID reader. 2. Make sure you solder the RFID reader because some models have bad contacts. 3. Drill a big hole for the motion sensor If you get the right fuse box, drilling holes wont be necessary. 4. Drill medium holes for the LED's. 5. Use bolts to fasten the arduino, raspberry pi and RFID reader onto the box. Don't tighten the bolts to mutch as it can damage the hardware. 6. Use second adhesive to fasten the LED's and motion sensor into the holes. Make sure none of it gets on the PCB RFID Security System: Page 3

Step 3: Connections Connect the wires as shown on the image. You can always review the arduino code to ensure you've connected everything the right way.

4 Step 3: Connections Connect the wires as shown on the image. You can always review the arduino code to ensure you've connected everything the right way. Connect the RC522 module as follows: SDA (SS) - pin 10 SCK - pin 13 MOSI - pin 11 MISO - pin 12 IRQ - none GND - GND RST - pin 9 3.3v - 3.3v Step 4: Uploading the Code to Arduino Upload this code to the arduino. If problems occur with the Arduino IDE and the MIFARE library, i suggest you download an older software release. RFID Security System: Page 4

5 Step 5: Raspberry Pi Follow both guides below to install Apache, PHP, MySQL and PhpMyAdmin on your PI Apache, php, mysql PhpMyAdmin Upload this code to the Raspberry Pi. /home/pi/python_script/project_python You can't use sudo from a PHP script. Apache is running from an user (www-data generaly), so edit /etc/sudoers and add this line : www-data ALL=(ALL) NOPASSWD:ALL Care! this will authorize all functions to be called by a PHP script, you can adapt changing "ALL" by your script. Then precise your user in your exec command. Step 6: Build Database To build up your database; 1. surf to your phpmyadmin page which can be found at yourpi'sip/phpmyadmin 2. Open the sql tab 3. Insert these sql statements top down. RFID Security System: Page 5

6 Step 7: Add Your Php Files to the Webserver Download these files to your Raspberry Pi. Place them at this location: /var/www/html/ Step 8: Complete! Now that you followed all the steps your prototype should be up and running. #NMCT #Howest RFID Security System: Page 6

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