Arduino RFID | How to Use RFID RC522 with Arduino

Today, we will learn how to use RFID RC522 with Arduino. I will show you how to read RFID tags using RC522 reader module and get unique ID (UID). The unique ID is used to identify each tag uniquly. And we will use UID in the code, to demonstrate how to create a door lock system using Arduino UNO.

RFID RC522 reader module is a two-way radio transmitter-receiver module. it sends a signal to the tag, and reads the information stored on RFID tag. RFID RC522 works on 3.3v. You must connect it to 3.3 volts pin of Arduino. Remember, connecting RFID RC522 reader module to Arduino 5v pin will likely destroy your module.

RFID means radio-frequency identification. it uses electromagnetic fields to transfer data over short distances. it is useful, to identify people, to make transactions. or You can use an RFID system, to open a door lock, switch ON a relay, light up an LED. or anything else you can think of.

Buy Parts:

Warning: Never connect RFID RC522 reader module to Arduino 5v pin, otherwise you module will destroyed.

Warning: The RFID module might not work, if you connect it on the breadboard. I have tested it many times and always get the following error. "Communication failure, is the MFRC522 properly connected?". So, make sure connect the RFID RC522 module directly to Arduino without using breadboard.

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Useful Video Links
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Blynk 2.0, Arduino, DHT11 and SIM800L

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Social Media Links
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GitHub:
YouTube:

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Download Code
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Disclaimer
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Disclaimer: All videos are for educational purposes and use them wisely. Any video may have a slight mistake, please take decisions based on your research. This video is not forcing anything on you.

#RFID #RC522 #Arduino

[oggythepro]

Thank you ! I've been trying to make the rfid work but it wouldn't work. But your code worked Thanks a lot!

[davydbar]

Thank you very much for showing this project in such a simple way, I wanted to experiment with RFID cards to add an ignition lock to my motorcycle.

[pccxp]

Thank You!! Really useful. I'm just testing my RFID-RC522 cause I just soldiered the connections and didnt know if it was going to work!

[Faiz_]

it seems that the way i put the hex code in was wrong because it keeps saying access denied

[heavybladevideo]

In the cerial monitor it says that the firmware version is 0x18 = (unknown) and nothing is showing up when i tap the card

[josephvanclersson]

I would like to do it but for 4 reader any video suggestions please

[benkotur]

Hello, i typed my mastertag in but its still saying denied. Any suggestions?

[FNTHAMOB]

Hello, i typed my mastertag in but its still saying denied

[frzbeev]

Am doing rfid rc522 attendence system using arduino with data logger ....in this am getting the SD card initialization failure ....what was the problem in this ..could you please reply me ..whats the problem...am not getting the output

[jebiejeb]

So I tried the code and the code works Ther is only one problem. I checked all the wiring and when I put it on, it did it for 5 seconds. Then it started to smoke and the LED became increasingly dimmer. When I pulled the plug, all the pins were warm. Not very hot but warm enough to smoke.

[samirzafar]

Hey Ahmad. I was wondering can we connect multiple RFID sensors to Arduino ?

[stevenli]

At 1:39, the RFID's RST pin and RST pin are wrong. The ground should be connected to ground, In your vid, the rst pin is connected to ground and ground is connected to rst.

[aisyahsofeaothman]

I already follow this step, but on serial monitor stated that there was a communication failure. How do I solve this?

[jjrg]

Where did you declare "getID"?

[umitsaman]

Many thanks for the Arduino projects. I learn by trying. Congratulations on your improvement.
Ümit SAMAN

[attariazeddine]

très intéressant, merci beaucoup pour ces explications....

[aziz]

Hi I have one code but I can't upload multiple card please solve me

Thank you very much, Ahmed. You are really a YouTube legend. In this work, I have a request. I hope that you will do the project to control 3 or 4 Relay with registered numbers, but using misd call and sms and buch button. Thank you very much and to your parents🙏🙏❤️

[fcj]

Great Vid. I learned a lot. Have you tried putting multiple tag readers together using different antenna?

[tanveerahmedshaikh]

very nice bro, i really like your video