How to use RFID (RC522) with Arduino - Easy Tutorial

(MFRC522) is the cheapest RFID Reader which uses 13.56 MHz frequency And it is also easy to use. We can easily interface it with arduino. This is the simplest tutorial on how to use RFIDs with arduino.
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[@Stevesteacher]

For those constantly getting a timeout error, note that you should keep the tag on the reader until the output is completed - either that, or you may have a connection issue

[@oggythepro]

Thanks a lot my guy I was very upset that i couldn't find a tutorial but you made it easy! Keep it going!

[@EnjoyMechatronics]

Glad I could help

[@deepanjalimishraa]

i am in 2nd year doing this project and this worked very well he teaches so good

[@EnjoyMechatronics]

Thanks, I am glad it helps.

[@J_Creative]

Ive been watching this many times your explanations drives clear and easy to understand thank you bro keep it up hope you can provide more,,,

[@EnjoyMechatronics]

I'm glad to hear that 😊

[@kieranhickey5896]

Best video for this build I could find. Typing the code in as you go helps with learning also. Great video

[@EnjoyMechatronics]

Thanks for your reply I am glad it was helpful

[@nicklane5896]

Agreed.

[@rifloanimations1182]

Nice one,, have looked for this one with a good code explanation,,Iam a Mechatronics engineering student,,and I enjoy Mechatronics

[@EnjoyMechatronics]

Thanks 😊

[@irzfanfarizan3001]

Thanks for this video bro, you explained very well for each line of code. It was very helpful for someone beginner like me to learn Arduino programming. Please don't stop making a videos and keep teaching us👏 may god bless you.

[@EnjoyMechatronics]

Really appreciate your interest. Thanks 😊

[@muthuchitra6937]

Thank you so much for the wonderful video and nice explanation.

[@EnjoyMechatronics]

So nice of you

[@tylerwatson9937]

Fantastic, thanks for walking through each section, helped a lot!

[@EnjoyMechatronics]

No worries 👍 I am glad you like it 😊

[@vendettyron]

ty, I finished my project with your video.

[@EnjoyMechatronics]

Great 👍

[@Dog_Awesome21]

if you get the error "WARNING: communication failure, is the MFR522 properly connected? Scan PICC to see UID, SAK, type , and date blocks..." try to switch to 5v

[@MagicMotion5498]

i'm stil getting the error

[@JeremyBindon-NotOurKing]

I'm also getting this error. Changing the voltage doesn't help

[@muthuchitra6937]

@@JeremyBindon-NotOurKingincrease the delay after PCD_init() and reset the arduino board and upload again. I also got the same error. It worked

[@RblxHorror-vh7ft]

So cool. Thx bro. Very usefoul for arduino begginers!

[@EnjoyMechatronics]

Glad it was helpful!

[@user-ux4id6zj3t]

Dude was really helpgul for me!! Thanks a lot!!

[@EnjoyMechatronics]

Glad to hear that!

[@STOIC_29]

bro how did you connect na mfrc522 into the breadboard? im having a communication failure and it;s loose don;t know how should i connect it

[@Omar_-nz2yj]

Thank you very much, I needed this video

[@EnjoyMechatronics]

Glad it was helpful!

[@mcrap4864]

How fast can the reader detect the tag? I want to try using this to uniquely identify my rc cars as it passes by it, which can happen really quickly. How many concurrent tags can it detect as once? I might have multiple tags nearby it. Do you have alternative solutions for my use case if this isn't suitable?

[@nicklane5896]

maybe a dumb question: is it right to hook the data pins to the 5v logic pins, even though it's a 3.3v module?

[@kitkirkyen2002]

Thank you for the precise explanation sir.

[@EnjoyMechatronics]

No worries 👍

[@kurtlrnzv_]

Hi, do you have project integrating RFID and Facial Recognition Technologies for Security System?

[@dailymemes2204]

i'm having a problem communicating the RFID to the Aduino, what should i do?

[@andreacolombo2495]

Is it possible to connect 15 devices at the same time? Is it possible to specify which reader the reading comes from?

[@user-wr3dx8in1h]

how did you connect the leds and buzzer i don't understand!!!!!!!!!!!

[@hannah-bw1rx]

have u figured it out? im having the same problem

[@emeraldoantony387]

it gives me error line byte accessUID[4] = {A3, 4F, 4E, F5}; that exponent no digits

[@MdAhanafChowdhury]

thank you for your precious explaination sir. how do i access card limited time?

[@foospoo]

there is an error that says unable to find numeric literal operator 'operator""D' how do we fix this problem

[@benb-lc8le]

I have a problom it works but just 1 time and then it just dosen't read the next card

[@marrionbenedictlamayo4909]

is this supported to r4 minima?

[@narendernautiyal3197]

thanx a lot dear done👍

[@EnjoyMechatronics]

Thank you too

[@powerupsuri355]

very easy and understandable video

[@EnjoyMechatronics]

Glad to hear that

[@grafika2]

@EnjoyMechatronics what is name of mechanism locker ?

[@arkabanik4039]

I cannot scan my card what can i do now?

[@GameOver-cp5nt]

it says 'mfrc552' was no declared in this scope. What i need to do?

[@EnjoyMechatronics]

Maybe you haven't installed the library

[@tylerwatson9937]

Will this still work standalone, without being attached to a computer?

[@EnjoyMechatronics]

Definitely, You could even power it using a phone adapter.

[@SahanaC_Sana_]

TQSM!!!!!!!!

[@tylerwatson9937]

I've been using RFID with Arduino for a bit now and it's been working great, but do you know of any way to disable the red led that lights up on the RFID sensor?

[@adityadeodhar8819]

no

[@MohamedibinAhmed]

It said failure connection maybe mfrc522 is not connected?

[@EnjoyMechatronics]

You have to wait a bit until the reader gets all data.

[@mackenziefallon6000]

Im using a mega 2560 and have wired it for the mega 2560 but when i brought up the serial monitor it said 'connection failure, is the MFRC522 properly connected?' ive waited a half hour (and my pc isnt slow) and ive rewired it but it wont let me

[@mihirhasmukhbhaikubavat2663]

you need to do soldering between breadboard and rfid

[@GameOver-cp5nt]

with the arduino mega 2060 you need to connect RST pin 9 SDA pin 53 MOSI pin 51 MISO pin 50 SCK pin 52

[@FlightOfThePiano]

Hi, great video, when trying the dump info serial monitor, it said communication failure and asked if it MFRC522 was connected properly, I was using thee arduino mega 2560 and im not sure how to resolve the issue or if my board is the issue. I rewired it so it was wired according to what the code said for my board but it still wouldn't work... any idea on what's wrong? issue was fixed, no worries. WAIT! one more thing... my pinmode function is making the pins turn on as soon as I start the code, any idea on what function can make the pins an output source without turning them on? here is exactly what it said: Firmware Version: 0x0 = (unknown) WARNING: Communication failure, is the MFRC522 properly connected? Scan PICC to see UID, SAK, type, and data blocks...

[@joshuapiper3712]

What did you do to correct your error?

[@benb-lc8le]

I have the same problem can you pls say how you fixed it?

[@joaoamaral677]

How do I put 2 tags in the code?

[@EnjoyMechatronics]

You could add another array accessUID2 then add it to the if statement if(.... || use the same comparison but with accessUID2) > this || means or

[@filipposzisis7148]

where is the code

[@ahmadhithem9029]

HOW CAN I DO MULTI CARD??

[@jeanieelorde17]

Can you please do video for laundry shop please 6:28

[@holdupmaster]

WARNING: Communication failure, is the MFRC522 properly connected? I just keep getting this error

[@kujtims]

Did you find a way to fix that i'm having the same problem as well...

[@IHas_]

am having same problem

[@minhhoangcong9155]

please help, im having too

[@IHas_]

@@minhhoangcong9155 change braud bro ı will solved my problem with this

[@OnlyXaM]

Im having the same problem, were you able to fix it?

[@user-zv8dt2vn8x]

Ok👍👍

[@Getreadytogame008]

Do I need the buzzer

[@EnjoyMechatronics]

The buzzer isn't essential to the project

[@Getreadytogame008]

Thank you

[@Getreadytogame008]

Thank you

[@Getreadytogame008]

Thank you

[@Getreadytogame008]

Thank you

[@foospoo]

constexpr float operator "" _deg(unsigned long long d) { // returns radians return d*3.1415926535/180; this code should fix the unable to find numeric literal operator 'operator""D' problem !!!!!!!!!!!