Each rfid card has a unique id embedded in it and a rfid reader is used to read the rfid card no.
Rfid multiple door lock system using arduino.
The goal is to open a door by using a specific tag that functions as an access badge.
So we decided to test a simple and cheap prototype to see if such a robust system could be developed using the tool of our choice arduino uno.
The rfid lock box combines arduino rfid and a solenoid to make your very own personal safe.
When the power is disconnected the slug moves outside and locks the door.
The mfrc522 uses radio frequence identification rfid.
Arduino rfid door lock circuit diagram.
In countries like india such automatic systems are not cheap by any yardstick.
I just finished installing an rfid door lock system using an rdm6300 rfid reader an arduino and an electric strike plate.
When we see sophisticated door management system s the price tag struck immediately along with the utility of course.
The positive pin of the buzzer is connected to digital pin 4 of arduino and the gnd pin is connected to the ground pin of arduino.
Most arduino pre flashed atmega 168 chips come with the default blink program pre installed.
My problem is that when i scan my rfid tag to unlock my door it reads it multiple times usually 4 6 which causes the strike plate to unlock multiple times.
Withthe use of arduino it becomes much easy to design.
Hii friends today i ll show you how to make rfid door lock system using arduino nano.
It doesn t use any power in a locked state.
The circuit diagram of arduino and rfid based door access system is shown in figure 1.
The circuit basically consist of arduino uno central control unit rfid receiver module rfid tag solenoid lock and few other electronics components like resistor capacitors diodes transistors etc.
Rfid uses electromagnetic fields to identify and track tags attached to an object.
In this project tutorial you will use the multiple mfrc522 to control a solenoid lock and three leds.
The arduino based rfiddoor lock system is secure and responsive as compared to other systems.
If the wrong tag is scanned the door will stay closed and set off a buzzer.
Connect a led to digital output 13 and verify that everything is working.
For the most part i followed this guide from practical arduino.
These tags contain electronic stored information.
To drive the solenoid lock you would need a power source that can give 12v 500ma.
It provides serial output along with weigand output.
Circuit diagram for solenoid door lock using arduino is given below.
Rfid stands for radio frequency identification.
Program a code and uploadit to arduino just like a plug and play device.
Em 18 rfid reader operates at 125 khz and it comes with an on chip antenna and it can be powered with 5v power supply.
Connections between arduino and rfid are given in the table below.
