Arduino Stack Exchange
Arduino Stack Exchange

Questions tagged [rfid]

Radio-Frequency Identification. Uses electromagnetic fields to transmit data for identification purposes, such as between a tag and a reader. RFID is the precursor to Near Field Communication (NFC).

223 questions
11
votes
4 answers

How do I use RFID-RC522 with an Arduino?

I am working on a project for my local Makerspace, we have limited budget so I was hoping to use the RFID-RC522 el'cheap'o RFID/NFC readers on eBay, I received a couple of SPI based boards, they work, however the code examples for them are…
unknowndomain
  • 322
  • 1
  • 2
  • 10
5
votes
1 answer

Can the Adafruit PN532 NFC/RFID be used to read Gen-2 EPC class RFID Tags?

I used Mifare Classic cards on a previous project and it worked brilliantly with the RIFD/NFC shield and Arduino Uno. I came across a Gen 2 EPC Class 1 RFID tags. This tags are long range ones. They use an IC chip called Alien Higgs3. I know that…
user2924
  • 51
  • 1
4
votes
0 answers

Can we use an alternate RFID reader to read HID cards?

I'm working on a project where I need to read the HID RFID cards. Behind the card it shows as HID 0008p and based on the documentation, it looks like it uses a 125 kHz frequency. I tried using different 125 kHz RFID readers, but I was unable to read…
Ram S
  • 51
  • 2
  • 7
4
votes
3 answers

MFRC522 Only working sometimes

/* * -------------------------------------------------------------------------------------------------------------------- * Example sketch/program showing how to read data from a PICC to serial. *…
Devon Freeland
  • 41
  • 1
  • 4
3
votes
1 answer

Connect multiple RFID-RC522 cards?

I have a project that requires 4 different RFID-RC522 readers. The RFID-RC522 has the following pins: SDA SCK MOSI MISO IRQ GND RST 3.3V I have read that the SDA pin is used for selecting the active device, So I'm thinking that these devices can…
Hoytman
  • 747
  • 5
  • 13
  • 26
3
votes
2 answers

How to read an RFID reader?

I want to connect an RFID reader to an Arduino board. The RFID reader has several wires attached, and the manual mentions them as follows: Red: VCC +12V Black: GND Green: D 0/RX/4R+ White: D 1/TX/4R− Blue: LED/CS Yellow: Beep There is also another…
MC Emperor
  • 131
  • 7
2
votes
1 answer

NFC hang after RF_ON command

We have developed our board with PN5180 NFC but I cannot make it work properly. After I send RF_ON command I am stuck on STATE_CHANGE_IRQ_STAT while waiting for TX_RFON_IRQ_STAT but the state never changes. In this moment I can see sinus vawes on…
user31496
  • 31
  • 2
2
votes
1 answer

RFID reader for unknown tag 125kHz

I have an unknown RFID tag and tried to read its value. I bought two readers, RDM6300 125KHZ and RC522 13.56MHz. Each of the readers connected to Arduino works well with the purchased corresponding tags, but not with this tag. According to my…
Jan Jarčík
  • 121
  • 3
2
votes
1 answer

How to emulate an RFID tag with the RC522

Is it possible to emulate an RFID tag with the RC522? (Spec sheet: nxp MFRC522.pdf) I want the RC522 to act like a NTAG213 nxp.com/documents/data_sheet/NTAG213_215_216.pdf and to be read/write by other readers/writers. Are there libraries for that…
pythonimus
  • 123
  • 1
  • 4
2
votes
1 answer

Smart Chess-board (possibly using RFIDs?)

I'd like to make a chess-board with the ability to detect the position of each piece. The solution that occurs to me would be to put an RFID reader under each square and put RFID tags on the bottoms of each piece. However, apart from the obvious…
interstar
  • 129
  • 4
1
vote
2 answers

How to detect the absence of an RFID tag?

I have installed an MFRC522 RFID reader in my house. The main use so far is to tell the house I've arrived using an RFID keychain, by leaving it in the key holder. I would also like for the house to detect when I'm gone, and I was thinking that, if…
jotadepicas
  • 326
  • 5
  • 13
1
vote
0 answers

Rfid checking continuously for cards

Well I am making a automatic car parking system where a any one parking their car will get a card as a token and have to return it before leaving with their cars one card for a slot And if they don't do so the buzzer will go high There is also a…
Abinash mohanty
  • 11
  • 1
1
vote
0 answers

Multi MFRC522 Slave AND only mifare read

Multiple MFRC522 Connections (https://learn.sparkfun.com/tutorials/serial-peripheral-interface-spi) I only get from each slave with an ID card; I want to print a defined barcode on the slave address. Briefly; The MOSI line does not matter! Is the…
is_mail
  • 21
  • 4
1
vote
0 answers

i am working on rfid module and the module is not detecting sny of the cards

i am working on uno. i am using mfrc522. the module is not detecting aby of the cards. nothing is poping up on the screen. this is the code- #include #include #include #include //…
Mohan Tanuj
  • 11
  • 1
1
vote
0 answers

Is it possible to modify the animal tags (EM4305) with any module that works with Arduino? 134,2Khz

i have a lot of tags (Animal tags rounded yellow) EM4305, this have 15 spaces of memory and i need change ID writed, currently i'm using this module but it did not can possible write on tag, exist a similar function to Write() from EEPROM, i see…
luke cross
  • 145
  • 3
1
2 3