This shield allows your Arduino to control a door lock using an electric strike plate and one of a number of commonly-available RFID modules, and is based on the circuit described in the "RFID Access Control System" project in the book "Practical Arduino". Note: Does not include the RFID reader module itself. You need to purchase a module separately. We recommend Priority 1 Design as a good source of compatible modules.BackgroundLow Frequency (LF) RFID is a technology frequently used for Access Control applications. This project show how to connect a simple RFID Reader module to an Arduino. Sample code is provided. Arduino UNO or similarWall Adapter for ArduinoRFID Reader module (see link for datasheet)5V relay moduleRFID tagsKey chainKey cardsTelephone jack and cable to mount the RFID Reader moduleElectric lock or magnetic lock and corresponding hardwareCircuit DescriptionIt is not easy to break into or be successful... Success stories all revolve around extreme passion.
Vol 12, No 1 (2013) > Guntoro Rancang Bangun Magnetic Door Lock Menggunakan Keypad dan Solenoid Berbasis Mikrokontroler Arduino Uno Dengan berkembangnya teknologi mikrokontroler saat ini, sistem keamanan dapat dilakukan dengan menggunakan alat elektronik sebagai pengganti sistem keamanan kunci konvensional. Alat keamanan pintu ini menggunakan solenoid dan mengendalikannya melalui keypad. Alat ini dirancang dengan memanfaatkan mikrokontroler Arduino Uno sebagai pengendali utama, dimana keypad berfungsi sebagai alat input kode password dan memberikan perintah pada mikrokontroler untuk mengendalikan relay. Alat ini bekerja ketika ada masukan berupa kode password melalui keypad, dan jika kode password yang dimasukkan benar maka mikrokontroler akan memberikan input high pada relay untuk mengaktifkan solenoid. Dari hasil pengujian yang telah dilakukan menunjukkan bahwa magnetic door lock ini dapat bekerja dengan baik, hal ini dibuktikan dengan software IDE Arduino bahwa mikrokontroler dapat mendeteksi input keypad dengan baik, delay yang diterapkan untuk mengaktifkan solenoid dapat berjalan dengan baik, dan fitur untuk mengubah dan menyimpan kode password baru dapat berjalan dengan baik.
Tersedia : http://www.arduino.cc/en/Main/arduinoBoardUno [2 Agustus 2012]/e-learning/mikrokontroler/pengantar-arduino.html [2 Agustus 2012](2011). Keypad Rubber Datasheets. Tersedia : http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Components/General/SparkfunCOM-08653_Datasheet.pdf [2 Agustus 2012]Solenoid 12V Pull Type. /12v-pull-type-solenoid.html [2 Agustus 2012](/e-learning/mikrokontroler/bahasa-pemrograman-arduino.html [2 Agustus 2012] There are currently no refbacks.I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used to open a door lock and if you need a louder alarm then you can replace the small buzzer with a high power siren. I will not talk about the RFID reader because you can find a lot of information about it on the web, but I will talk about the Arduino sketch which is very important. So, let’s start by watching this 7 minutes video to see the entire system in action:
Arduino RFID Schematic + some photos Now let’s see the code: First off all extract the RFID library and move the folder inside the Libraries folder where you’ve installed Arduino software. Now connect the RC522 reader to the board as you can see on the first lines in the sketch: The resetAlarm integer is the Arduino pin where we connect the button that is used the reset the alarm. The relay is connected to pin 7 and the active buzzer to pin 8. On the next lines you need to change the cards codes with the ones you have. You’ll have to read the codes in the serial monitor then decide which ones you want to use to allow access in your room (watch the video to see how I’ve made it). You can use only one card or as many as you want, but add the comma after each array of elements. The boolean access is set to false and is used to store the value true or false when we read the tags (or cards). If you go to line 63 you can see a for loop where we check to see if the values we stores in the cards array are the same as the ones we read from our RFID reader and if are the same then we set access variable to true.
Now, on line 76 if access is true we print “Welcome” in the console, set startAlarm to false so it doesn’t turn on, and activate the relay. If is false then we setAlarm to true and let the relay in its initial state. On line 87 we check to see if the startAlarm is set to true and if so then we turn on the buzzer. If is false then do nothing. We also have a resetAlarm button that is used to turn off the buzzer and the relay will not be activated. We might as well use a good RFID tag to stop it but now the relay will be activated. This project is very simple and can be a good starting point to develop more complicated applications where you use the RC522 RFID reader. Stay tuned because I will try to make some new and interesting systems based on this reader.$17.43Buy It Now watching | View DetailsCondition:NewTime left:11d 0h 3mItem location:New JerseyThe Basic necessity of security can be attained by designing various door locks such as mechanical locks or electrical locks.
These kind of door locks are designed with one or more keys, but for locking a large area various locks are needed. Generally, traditional locks are heavy and that are not strong as they can damage simply by using some tools. Electronic locks are better over mechanical locks, to resolve the security problems that are connected with the mechanical locks. In recent days every device uses digital technology. For example, identification of digital device using token, door lock system using digital technology, automatic door opening and closing, automatic door lock systems, etc. These kind of systems is used for controlling the movement of a door without using a key. The proposed system uses an Arduino board and RFID readers The RFID reader is a wireless device used to transfer data for recognizing and tracking tags connected to objects. The tag includes electronically stored information. Some kind of tags is run by electromagnetic induction from magnetic fields formed near the reader.
RFID reader includes an RF module and it acts as a both TX and RX of radio frequency signals. The transmitter of this module contains an oscillator to make the carrier frequency. A modulator to intrude data commands upon this carrier s/L and an amplifier to increase the signal enough to wake the tag. The receiver of this module includes a demodulator to extract the reverted information and also holds an amplifier to support the signal for processing. A microprocessor is used to form the control unit, which employs an OS and memory of this module filter and stores the information. Arduino is a microcontroller board based on the Atmega family. It consist of 14 digital I/O pins. An Arduino board includes 6 analog i/ps, a USB, a reset button, an ICSP header a 16 Hz quartz crystal, and a power jack. It covers everything desired to support the microcontroller. It is simply connected to a computer with a USB cable. Interfacing of RFID with Arduino can be done by the following steps
The necessity of power supply for RFID readers varies from one product to another. There are many RFID readers are available in the market with 5v, 9v and 12v. But, here a 12v RFID reader is used for an interfacing. You may confirm the RFID reader and RFID tags are frequency compatible RFID gives mainly two possible outputs, one is TTL compatible o/p and another one is RS232 compatible o/p. A TTL compatible o/p pin can be connected to an Arduino board directly. While the output pin of an RS232 compatible must be changed to TTL using an RS232 to TTL converter The automatic door lock system circuit diagram using an Arduino is shown below. This circuit is mainly used for an interfacing of RFID reader with an Arduino. This project can be enhanced by connecting an LCD display to display the outputs. The circuit of this project uses three separate parts, namely a reader, a controller and door lock. Where a reader reads the RFID tags, a controller is used to accept the data from the RFID reader and control the o/p of the door lock and RGB LED.
When the door lock is placed on a door and tested with a battery to check the installation. In many cases we need a simple circuit on the door lock, that means the automatic door stops locked when there is no flow of current. When 12 volts DC is supplied through the electromagnet in the door lock system, a plate in the door lock offers a way to permit the door to be pushed open easily. The RFID reader is placed on the outside of the door and it is detached from the controller confidentially so no one can avoid the security by breaking open the RFID reader and trying to short circuit the reader. The controller of this project receives serial information from the RFID reader and controls the Door lock and the LED. So, finally we can conclude that, when the person swipes with right RFID tag, then the access control system will be will be granted. In the same way, when the person swipes with an unauthorized RFID card, then the data will not be loaded and access will be denied.