You can load as many rfid tags as you d like onto the arduino and add or remove tags to provide more or fewer people with access.
Rfid activated door lock arduino.
In arduino project in this project tutorial you will use the multiple mfrc522 to control a solenoid lock and three leds.
Rfid uses electromagnetic fields to identify and track tags attached to an object.
Most arduino pre flashed atmega 168 chips come with the default blink program pre installed.
After having the circuit ready go to file examples mfrc522 dumpinfo and upload the code.
This code will be available in arduino ide after installing the rfid library.
Reading data from an rfid tag.
You should see something like the figure below.
The servo that controls the door is being controlled by the micro controller and the arduino is being told when to unlock and lock the door with the rfid reader.
Intermediate protip 2 hours 25 722 things used in this project.
The first step to building a rfid door lock with a basic arduino is to bread board out a basic working arduino.
Rfid and keypad based door lock using arduino to open the door the user will have to first scan the right tag and then he will have to enter the correct password.
Some methods and techniques are borrowed from my previous project the rfid cat feeder.
The mfrc522 uses radio frequence identification rfid.
Arduino controlled lock box with solenoid and rfid project tutorial by robotgeek projects team 10 461 views.
This is a really easy rfid door lock mechanism which is based on the arduino uno and the rc522 rfid sensor which allows you to use rfid tags or cards to lock and unlock a door drawer or cupboard.
Whereas the feeder controls access to a food bowl the door controls access to an entire room.
Then open the serial monitor.
Connect a led to digital output 13 and verify that everything is working.
When someone swipes the corresponding rfid card in front of the reader the reader lets the arduino know that the correct card has been read and to then operate the servo unlocking and locking the door.
It features a custom made antenna large enough to function as a gate which makes it easy for the animal to activate and quite reliable.