This rfid door lock can be made easily at your home and you can install it in any door.
Rfid based door lock system using arduino uno.
Rst pin goes to digital pin 9.
Arduino uno or any other arduino.
You are given a card and you just need to put it in front of a rfid reader box and the lock gets unlocked with a beep and a blink of led.
So we are going to use the hardware spi pins of the arduino uno.
Interfacing of rfid with arduino can be done by the following steps.
The rfid reader module uses the spi interface in order to communicate with arduino.
There are many rfid readers are available in the market with 5v 9v and 12v.
The components you are going to require for rfid and keypad based door lock and alert system using arduino are as follows.
Arduino rfid door lock hardware project setup.
In this case we will then use a relay so we can make it work too we are using the plunger as a lock so here is the connections for it.
In countries like india such automatic systems are not cheap by any yardstick.
But here a 12v rfid reader is used for an.
You have seen rfid door lock mechanism in some hotels and other places where you don t need a key to unlock the room.
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.
Intermediate protip 2 hours 25 722 things used in this project.
5v 2a power adapter.
As we are using a plunger it requires 9 volts to work and as we all know an arduino uno only has max 5 volts.
The goal is to open a door by using a specific tag that functions as an access badge.
In the previous post you learned about rfid and keypad based door lock and alert system using arduino in which user had to scan the right tag and enter the right password to open the door lock and the system also sends us the confirmation message.
Rfid door lock with arduino.
4x4 keypad or 4x3 keypad.
When we see sophisticated door management system s the price tag struck immediately along with the utility of course.
If the wrong tag is scanned the door will stay closed and set off a buzzer.
Irq pin stays unconnected.
The necessity of power supply for rfid readers varies from one product to another.