When the power is disconnected the slug moves outside and locks the door.
Rfid multiple door lock system using arduino.
In this project tutorial you will use the multiple mfrc522 to control a solenoid lock and three leds.
Program a code and uploadit to arduino just like a plug and play device.
It doesn t use any power in a locked state.
When we see sophisticated door management system s the price tag struck immediately along with the utility of course.
The arduino based rfiddoor lock system is secure and responsive as compared to other systems.
Circuit diagram for solenoid door lock using arduino is given below.
The circuit diagram of arduino and rfid based door access system is shown in figure 1.
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.
If the wrong tag is scanned the door will stay closed and set off a buzzer.
Withthe use of arduino it becomes much easy to design.
The goal is to open a door by using a specific tag that functions as an access badge.
Connections between arduino and rfid are given in the table below.
This project guide will detail the steps to create an rfid radio frequency identification door lock system using an arduino mega 2560.
Most arduino pre flashed atmega 168 chips come with the default blink program pre installed.
Rfid uses electromagnetic fields to identify and track tags attached to an object.
The mfrc522 uses radio frequence identification rfid.
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.
I just finished installing an rfid door lock system using an rdm6300 rfid reader an arduino and an electric strike plate.
In countries like india such automatic systems are not cheap by any yardstick.
These tags contain electronic stored information.
For the most part i followed this guide from practical arduino.
Connect a led to digital output 13 and verify that everything is working.
Hii friends today i ll show you how to make rfid door lock system using arduino nano.
To drive the solenoid lock you would need a power source that can give 12v 500ma.
Rfid stands for radio frequency identification.
The rfid module works as sensor.
The first step to building a rfid door lock with a basic arduino is to bread board out a basic working arduino.
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.
Each rfid card has a unique id embedded in it and a rfid reader is used to read the rfid card no.
It provides serial output along with weigand output.
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.