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).

48 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
2answers
317 views

RFID stops working when I place the servo

I've successfully implemented Door Unlock system described in this tutorial. At first I used Arduino Uno and RFID RC522 Reader and MG90S Micro servo. When I used Arduino Uno with Arduino Pro Micro ...
2
votes
0answers
574 views

RFID Code (and setup) works on an UNO but not on the Yun

We're using two RDM6300 RFID readers for this, and the code works when plugged into an UNO, but not when connected to the Yun. We have one of the rfids plugged into the rx pin (0 on the digital side) ...
2
votes
0answers
2k views

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 ...
2
votes
0answers
1k views

Hub RFID Arduino + WIFI

I will start an Arduino project and its main requirement is that some RFID readers (at most 6 readers) be connected and controled by the arduino board. I do not have a strong background in ...
1
vote
0answers
1k views

NFC PN532 SPI - Error: Timeout when waiting for ACK

I've been struggling to get the PN532 module working over SPI with an Arduino Uno. I have the wires connected as follows: SCK -> 13 MISO -> 12 MOSI -> 11 SS -> 10 VCC -> 5V ...
1
vote
0answers
669 views

Make RFID Tag as a variable

I want to make RFID Tag as a variable, and push it to the web server. But I struggle to do the Serial.read function. Any solutions? Here is my code #include <ESP8266WiFi.h> #include <SPI....
1
vote
0answers
2k views

Arduino RFID Mifare Classic dump info

I have my Arduino uno setup with RC522 reader. I am able to dump the data that is held on my test card supplied with the reader but I wish to read the data blocks held within another card I have. The ...
1
vote
0answers
652 views

RFID working with interrupts

I recently created a rfid project with the sensor rfid rc522. I used the instructions mentioned by this site and works perfectly. However, I intend this project to be battery supplied and I want to ...
1
vote
0answers
2k views

How to write an integer value to an RFID tag?

I'm working on a project in which two Arduinos are to be used, each Arduino is connected to an RFID reader. First RFID reader should write an integer value to the tag detected whereas the second RFID ...
1
vote
0answers
209 views

Cannot read NTAG203 with MFRC522

I tried regular RFID tags and It works but when I tried NTAG203 it won't detect. P.S. I used the code "dump_data" example of MFRC library.
1
vote
0answers
680 views

Help reading a 125khz FSK RFID

Reddit doesn't seem to be much help, so I'm posting here as well. I'm try to read (what I think is) an HID Duoprox II 125kHz FSK RFID and am having a bit of trouble. I'm using an Arduino nano and am ...
1
vote
0answers
1k views

Using Johnny-five API with RFID Controller Shield

Is it possible to use the Adafruit PN532 NFC/RFID Controller Shield with the Johnny Five API? I've searched the depths of google and I'm unable to find anything so far. If it is possible, how can I go ...
1
vote
0answers
1k views

Arduino code issue (using Bluetooth and Rfid technology)

I am building a device that communicates with my Android phone. I know that my App works but my Arduino code seems to have a problem. So I have made a smaller programm and everything works fine there. ...
1
vote
0answers
122 views

RFID library issue

I am having some strange issue. I am using Linkit One board, which is a based on Arduino. I am using rfid reader RC522 which is cheapest and most common. I cant get its official library get it ...
1
vote
0answers
479 views

Arduino PN532 & RFID Reader ID-20LA communication with Android

I am working on an RFID/NFC system where the functionality goes as follow: PN532 will read and register Android Phone using NFC RFID Reader ID-20LA will read RFID tags After the phone is registered ...
1
vote
1answer
956 views

Emulate RFID Tag

I just got my RFID-RC522 Reader and was wondering one thing. Can i Use an RFID Reader to emulate an RFID Tag, so that if i have another reader it will detect the other one as a card and transfer data. ...
0
votes
0answers
12 views

MFRC522 randomly works

I read several thread and discussion about MFRC522 issues, but I didn't found a solution for my problem. I have two MFRC522 reader connected to my Arduino Uno. I send commands to the Serial Port, and ...
0
votes
0answers
28 views

Is it possible to write URLs to RFID tags with the RC522? If so, how?

I've been trying to research to answer this question for a long time, but could not figure out the answer. I know how to code like bytes of information, but not URLs. More specifically, when you code ...
0
votes
0answers
23 views

MIFARE CLASSIC 1K anti-collision

I am using this code to read card. https://wiki.keyestudio.com/Ks0067_keyestudio_RC522_RFID_Module_for_Arduino I have only one card, so I can't test anticollision. Can someone explain me how does it ...
0
votes
0answers
21 views

RFID-RC522 not working with Arduino/Genuino Micro

I recently bought an RFID kit from my local electronics store, this one here to be exact. I have been trying to follow this GitHub library, however, upon hooking it up, launching the DumpInfo ...
0
votes
0answers
29 views

Can the following materials be used to power up an attendance based sensor?

arduino uno, esp8266, rfid module rc522, sd card module, real time clock module, buzzer, led light and battery holder. I was planning to build a sensor that monitors attendance with the use of and ...
0
votes
2answers
121 views

Garage Door Opener RFID failing after a period

I've been building an add on to my garage door opener that will allow it to be opened from the outside with a valid RFID token or from inside using push buttons. This works as expected when first ...
0
votes
0answers
185 views

How to Insert Data in Arduino's Direct Mysql

As inserted in a Arduino Mysql Direct Tablela I'm new to Arduino and would like to know how to do something in the code to make a copy in the database This code to pass the RFID and authorized ...
0
votes
0answers
78 views

How to use sparkfun rfid qwiic reader

Project(skip to here if you don't care): I wanna use the rfid tags as products that i send to a mobile app and from there a suite of different applications. I succeded with a mfrc522 but only for 3cm ...
0
votes
0answers
50 views

Problem in interfacing EM18 reader with Arduino Mega

When we interfaced em18 reader with Arduino Uno it was properly working but with Arduino Mega it is not working but all other components are properly with Arduino Mega. Receiver and transmitter LEDs ...
0
votes
1answer
317 views

RDM6300 continuous RFID tag read

I have an RDM6300 connected to an Arduino Mega and code that can read the tag just fine: // Function prototypes void setup(void); void loop(void); // RDM6300 packet details #define ...
0
votes
0answers
31 views

Arduino Port randomly changes whenever I punch correct RFID tag

I was working on an Electronic Door Lock/Unlock system using Arduino Uno and RFID Reader/Tags on Ubuntu 18.04.02 lts. Now the problem is that whenever I punch-in the correct RFID tag to the RFID ...
0
votes
0answers
97 views

Problem interfacing both esp8266 and EM18 with Arduino Uno

I have connected esp8266 with Arduino Uno and programmed 8266 with Arduino IDE to send data to firebase over WiFi. Now I also want to interface EM18 RFID Reader with Arduino in order to read the RFID ...
0
votes
0answers
220 views

Reading Multiple RFID tags / Reading and ignoring/holding the tag

I'm currently doing a project where ideally I will have multiple objects with RFID tags on them that are placed on top of a Adafruit PN532 RFID Shield connected to a Arduino Uno Wifi Rev 2. The idea ...
0
votes
0answers
76 views

How to put the inputs in array?

I face a problem and I really need help. For my Arduino project, I'm using RFID reader with tags. The story is, I have a desired arrangement for the cards and I defined it as an array called desired[]=...
0
votes
0answers
59 views

Totally unresponsive card with RFID-RC522 Module

I bought an RFID-RC522 module including two attached PICC cards: a blue key chain tag and a white card with the type of MIFARE 1KB. In addition, I bought two other separate cards from the same seller. ...
0
votes
0answers
110 views

Arduino based attendance system

I am working on a RFID based attendance system. I am using Grove-125 kHz RFID reader, SD card module, DS1307 RTC and Arduino Mega. Each component works alone (separately) with the Arduino well, but ...
0
votes
0answers
111 views

Why is this Code not working with Esp8266 when it worked perfectly with Arduino Uno?

I'm making an attendance System using an RFID scanner, scanning RFID Card & saving Data in Excel. When I used this code with Arduino Uno (by changing #define SS_PIN 12 and#define RST_PIN 9) it ...
0
votes
0answers
62 views

Rfid stops scanning after wrong card scanned

My Rfid reader stops scanning cards after scanning the wrong rfid card. It doesn't scan it anymore after turning off the relay. *It turns on the relay if my rfid card is the right one #include <...
0
votes
0answers
155 views

RFID scanner- HZ 1050 Module

I just bought a rfid scanner hz 1050 module at $5 to add to my project,in the module I see a lot of pins to male my connections. Am getting stuck on the ones to use for arduino. I will be glad to ...
0
votes
0answers
39 views

Can anyone explain this?

starting app without reboot espcomm_send_command: sending command header espcomm_send_command: sending command payload espcomm_send_command: receiving 2 bytes of data closing bootloader ...
0
votes
0answers
443 views

RFID-RC522 not working with Arduino Uno clone

I am using this library https://github.com/miguelbalboa/rfid, and using DumpInfo.ino from it: /* * ----------------------------------------------------------------------------------------------------...
0
votes
1answer
2k views

Emulating a generic Mifare USB peripheral device with RFID-RC522

Hardware Dev Board: Arduino Nano V3.0 Module: RFID-RC522 13.56 MHz Cable: USB A - USB Mini B Configuration Physical Code /* * -------------------------------------------------------------------...
0
votes
1answer
105 views

How to add if condition with RFID Example

Using a Arduino Mega 2560 and PN532 NFC/RFID module, I want to be able to scan a card and see if it's value is (0xF0, 0x21, 0x5D, 0xA7). It should print "accepted" in the serial monitor. However ...
0
votes
0answers
487 views

NFC/RFID module multiple cards

I have this NFC module. When i read ONE card at a moment everything works fine, but i need to read more that one cart at a moment. One card lays on a module - module reads it ok, when I move another ...
0
votes
0answers
266 views

Can a 433mhz receiver receive data from a 433mhz tag/fob?

If I use a 433mhz receiver on an Arduino Nano, will it detect a 433mhz tag? I'm not talking about the transmitter that is shown below but a tag/key fob. Example of 433mhz tag
0
votes
0answers
35 views

Is it possible to print all RFID chips in range instead of printing one by one?

I'm currently using an MFRC522 RFID Scanner on my Arduino UNO board. It's possible to scan for all the chips in range, but I can only print them one by one... Is it possible to call a function that ...
0
votes
0answers
753 views

rc522 RFID reader will only accept first tag after power up

I have an interesting problem using the Mifare rc522 device similar to http://www.ebay.com/itm/201415107836 I have this device connected to an arduino uno and drawing power from the 5V supply. It ...
0
votes
0answers
285 views

SM 130 RFID reader, with Arduino Uno. Trying to read RFID passive tags on Arduino version 1.6.7

I am trying to read passive tags using these two devices and an arduino uno, for a class project of trying to make my own doggy door. However, all the code I have been able to find is out of date, ...
0
votes
1answer
45 views

Is SPI a good way to connect two rfid modules on separate arduino boards?

RFID access control I have two separate rfid projects on separate arduino, the first project requires 2 minutes of contact between the tag and the reader after which it turns the LED on. the second ...
0
votes
1answer
820 views

MFRC522 minor problems

I'm working on a small project for a presentation. My goal is to read the UID of multiple Mifare Classic cards and compare it to a hardcoded list for different actions. All is well (the reading and ...
-1
votes
0answers
31 views

Arduino smart card emulator

I'm new to Arduino, but I want to make system which will allow to test POS Terminals. I'm finishing right now system which will put in/out chip card, swipe magnet stripe and put contactless. The ...
-1
votes
2answers
100 views

I have an 'error' with my code

The following code gives me an error: // RFIDunio.h is from http://learn.robotgeek.com/getting-started-guides/39-robot-kits/151-rfiduino.html #include <RFIDuino.h> byte keyTag[5] = {0,0,0,...