How to use RFID reader RC522 with arduino easy way

MFRC522 is maybe cheapest RFID Reader that we can found now. It uses 13.56 MHz frequency And it is also easy to use. We can easily interfaced this reader with arduino or raspberry. This video can be the simplest tutorial on how to use this RFID reader with arduino.

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[Supermouseandcheese]

Thank you for the great video! Super easy to follow along!!

[suzanad]

I checked many videos, all didn't work. Yours worked! Thanks

[christopherami]

the RFID library make it very very easy thanks man for this tuto

[michaelhaws]

thanks for the video. helped me get an A in class. thank you!

[faroekjuthan]

My compliments for your great explanation and how the code works. Thanks for sharing and wish you the best of luck with your projects.

[ayounx]

Hope u add relay to this project, good job.. thanx

[mattlovestechyt]

Do you know how can reuse the pins of an arduino? I have another lcd screen that I’d like to use on the same board. Some sort of switch will probably help solve my problem as I don’t need them both working at the same time. Would love any ideas

[muhammadzulhilmimohdjailan]

Hello Sir, can you teach us how to interface AS608 with esp32? Thank you.

[alexanderduff]

I've downloaded and included both RFID libraries copied the code into Arduino, but getting the error message 'class RFID has no member named 'isCard'

[chrissmith]

hi may i ask is there a way to use the tag to turn on a switch and the switch stay on until the unit it powered off / rebooted. so the tag closes the switch and no matter if the tag comes into contact again once the switch is on it has no effect.

[asuslaptop]

i need help. im trying to add the rfid library from manage librarys but how do i get to my ribrary and inset it as its showing other peoples files and telling me to download it. been at it for hours and i stg amma scream

[adriano]

how get card numbers in new arduino ide

[adarshmgrocky]

helo bro how to connect 2 rfid sensors in a arduino plz make a programe

[rakeshanjani]

Need help is correct but rfid sensor doesnt recognise rfid card tag ...whenver i try to read the rfid card in COM3 its coming like this..." ????.???...u..??..??." What is this bro ??

[prasadshinde]

Hey bro. I'm getting following error.. Plz help
Firmware version : 0x0 = (unknown)
Warning : communication failure, is mfrc522 properly connected?

[ayakanaan]

Hello Sir
thanks for this great video. I need help now. The RFID sensor does not recognize the RFID card. The wiring connection has been checked and the programming is all correct but does not work. I dont know Why!!

[blinqr]

What does halting the rfid mean, and what does the init method do? And what is serNum is that an array?

[galaxyriderx]

Is it possible to customize the sound for each rfid card ?

[sehan]

hello there... i am really need of help right now.... how can i code the RFID tag so it can perform addition operation... i mean like one card reads value of 3 and another card reads value of 4 so i want to make an addition operation...can someone help me

[mrribestgamerz]

help me. all the wiring are great. the code uploaded. the serial monitor pops up and said "Starting the RFID Reader..." but when i put my card/tag on the rfid sensor, there's nothing. there's no id pops up on the serial monitor. what could be the problem here?