Questions tagged [rfid]

RFID stands for "radio-frequency identification" and is used to identify and track objects via wireless communication over short distances.

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22 views

Cannot read tag with RFID-RC522

I have some trouble recently while reading a tag/card with my RFID-RC522. I can make it works on one RPi, but on the second one, it doesn't (previously it was also working, but I don't know what ...
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32 views

Problem in the SPI communication with RFID-RC522 (spi mode)

I have some trouble using the RFID-RC522 reader with my RPi. It was working in the past, but now it stopped. I'm trying to find if a configuration changed somewhere and I also looked at the code of ...
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20 views

Read RFID tag and display chart via HDMI

I'm a beginner in Raspberry Pi developing, I'm more familiar with embedded programming. But now, I have got a project, where I definitely need the performance and GUI of an Raspberry Pi :) Overview I'...
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56 views

change mfrc522 module SPI to I2C

I'm working on a project where I need to use touchscreen and RC522 senzor on same Raspberry Pi, now I need to change senzor from SPI to I2C in order to do that I need to change mfrc522 module which ...
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41 views

RFID to Raspberry pins

I am working on a school project and need to connect Rfid RC522 and tuchscreen to raspberry, problem is that tuchscreen is using same GPIO pins as Rfid, I Got suggested connect RFID using I2c And use ...
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55 views

My rfid-rc522 reader stops reading after some time, how can I debug it?

I'm using the reader below to read mifare cards (13.56mhz), I have an electron/node.js application for this. For some reason after an uncertain amount of time(shortest time I noticed was about 30 ...
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5answers
346 views

Raspberry Pi , RFID , Relay Module and Magnetic Door

I have used the code from github and in that code i am implementing the raspberry pi and the RFID and relay module with magnetic door unlock. Everything is working Okay , the RFID , the Relay module ...
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17 views

Medium range rfid [closed]

I need to design/build a system that can detect a stationary line-side device as a ride-on miniature railway train passes by. The line-side device will transmit to the train the prevailing speed ...
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1answer
76 views

How I can Communicate between raspberry pi4 and multiple ZigBee (XBee) and sensors, RFID

How I can Communication between raspberry pi4 and multiple ZigBee and sensors Hello, I have one raspberry pi4 and 3 sensors (Temperature, Ventilation, Light) and one RFID how I can communicate between ...
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38 views

Use of pi-rc522 to control RC522 RFID module

I failed to get my RC522 module to work using the MFRC522 library having set up the module using a Raspberry Pi 4 with Python 3.7 according to the instructions in https://www.raspberrypi-spy.co.uk/...
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31 views

Input() called from GPIO input (button press) returns error

I'm learning Python whilst tinkering with various 'kits' I got for my Raspberry Pi. Currently messing around with the RFID-RC522, a simple to use RFID read/write board. I have independent Write.py ...
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301 views

Problem with USB RFID Reader and Raspberry pi 4

Firstly I'm just a beginner trying to get into pi world so my knowledge is minimal at this point. I'm trying to make USB RFID card reader work on raspberry like it works on my Windows pc, imitate ...
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2answers
35 views

Best way to detect a small portable device in the range of 5-6 meters [closed]

I have a couple of things automated in my room (fan, lights etc) using a server running on Rapsberry Pi 2 and relays. Now I would like to implement a system to automatically detect when I am in the ...
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0answers
260 views

Raspberry Pi 4B - RFID-RC522 stopped working [closed]

I connected a RFID-RC522 to my RPi 4. It was working perfectly to read data until now. I don't know why but I cannot read anymore data now. Nothing changed in the hardware, neither the software. Maybe ...
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1answer
116 views

Read serial data from multiple arduino

Please help me find problem in this code: import serial ser=serial.Serial("/dev/ttyACM0",9600) ser.baudrate=9600 ser1=serial.Serial("/dev/ttyUSB0",9600) ser1.baudrate=9600 ser2=...
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82 views

How to wire an electromagnetic lock to my raspberry pi

I am trying to build an RFID controlled electronic lock using my raspberry pi 4. I am still brand new to robotics and so far have only been able to turn a LED on and off. I bought the following ...
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1answer
218 views

Way to get signal strength from an RFID reader?

I am attempting to make a grid of RFID readers that can triangulate the position of a tag within their read range. I am currently using MFRC522 readers connected to a Raspberry Pi 4 Model B (4gb) and ...
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1answer
115 views

What's the best solution to detect the coming of a person [closed]

I have a robot which should detect an approaching person and identify them in a range of about 1-3 meters. For that, the person should have something on their key ring, ideally without battery life ...
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204 views

How to add 2 RFID readers to Raspberry PI 4

I managed to install 1 rfid reader following this link tutorial but i have no idea how to read with 2 and know from which one reads
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1answer
53 views

Importing Data from MFRC522 to MariaDB via. raspberry pi 3

can you please assist me on python scripts that can import DATA FROM AN RFID READER (MFRC522) TO A MariDB DATABASE using a Raspberry Pi 3 B+?
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1answer
70 views

RFID~RC522 module not reading some cards

this is my first question here and I am kinda lost. I have a RC522 RFID module hooked up to a Raspberry PI 0 V1.1, and I have a TAG and a CARD (which I got with the module when I bought it) and I ...
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0answers
210 views

Reading ISO15693 SLIX2 18000-3-1 RFID tags with Raspberry Pi

There are Raspberry Pi components like RC522 that can read NFC tags, and it only supports ISO/IEC 14443 A/MIFARE and NTAG. We can't use those. We are looking for a component that can read ...
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1answer
121 views

RFID and LED Script disables RFID reader until reboot

I have two simple scripts, which work individually. One simply lights an LED, the other reads RFID. Now I want to put them together, but seem to fail. Once this runs, I can't read RFID anymore until ...
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1answer
95 views

sending rfid data to flask [closed]

good day ! i am working on a student authentication project in which the student swipes his rfid card over rc522 reader and the laptip webcam captures the photo of the student to authenticate. i am ...
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3k views

How can Rpi SPI python read the MFRC522 RFID / NFC module?

Trying to read my RFID MFRC522 using a Mifare blue tag and it is not working. Wondering if i could get any help on this as when i put the tag to read it doesn't show up as quick? using: https://...
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64 views

Read RFID tag with Parallax RFID module

I'm using Parallax RFID Read/Write Module - Serial, this datasheet and trying to set module in active mode (LED light goes from GREEN to RED) with python code and then actually read tag. After running ...
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2answers
665 views

Read USB RFID via tty1 in Python very unreliable

I have an RFID reader (Neuftech USB RFID Reader, https://www.amazon.de/Neuftech-Reader-Kartenleseger%C3%A4t-Kartenleser-Kontaktlos/dp/B018OYOR3E) that attaches via USB. Via /var/log/syslog I found out,...
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171 views

RFID reader/writer

I'm creating a clocking in system for work and I'm considering using a raspberry pi for the card interface. Having never used one before I just want to check if this is possible. I've seen a few ...
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1answer
185 views

RFID RC522 Clone Script Unicode Error

I've set up a RC522 Card on my pi using This Tutorial and hacked together the Read.py and Write.py scripts into a Clone.py script: #!usr/bin/env python import RPi.GPIO as GPIO from mfrc522 import ...
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1answer
206 views

Connecting Raspberry Pi to 5V UHF RFID reader over TTY via level shifter

I want to keep track of UHF RFID stickers. I'm hoping to do this using a Raspberry Pi zero attached to an UHF RFID reader. I acquired this reader: https://www.aliexpress.com/item/32848525319.html ...
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472 views

Basic Python interface to use with UHF RFID reader?

I have a Chinese UHF RFID reader that I'm using with a RasPi for a warehouse tracking project and it came with only a Windows SDK. The dense protocol document they provided in very rough English is ...
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108 views

How to configure the RaspberryPi-B1 RFID reader by Eccel?

I am trying to configure the B1 RFID hat on my raspberry pi since it is a cleaner solution than using a USB RFID reader. However I have ran into some issues. Firstly, the documentation supplied by ...
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45 views

RC522 RFID Module under heavy load?

We are planning to use RC522 RFID Module with RaspPi for authenticating guests at an event and am wondering if this is a good idea as there could be up to 500 guests / hour. Our system will simply ...
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112 views

raspberry pi with udp?

I wanna use the Raspberry Pi to detect RFID to control the video of Unity. My method is: Raspberry Pi reads the value of UDP and sends a message back to the unity (Raspberry Pi and Unity use the ...
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1answer
857 views

SimpleMFRC522 stop reading after some time

My code stack after some time (example 1 day) after reading MFRC522 in loop mode. At the beginning it works without problems, after some time is not working anymore. I can't figure out why. Can you ...
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2answers
1k views

how do I automatically power off the raspberry pi and cut power every night and then power it back on each day?

Background I'm a student working on research project to develop a remote wireless sensor network of data loggers. Each data logger (aka node) is going to be retrofitted to a bird feeder that reads ...
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55 views

MFRC522 and Bluetooth not work together

I have a program in which I use pyqt5, MFRC522 and bluetooth. I have 3 threads, one for the interface, one for the MFRC522 and one for the bluetooth. If I run the MFRC522 and the bluetooth separately ...
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1answer
341 views

Detecting the same RFID tag twice

I have a problem with the MFRC522 library. It seems to me that after the tag was read / written one time correctly, in the next cycle the library always returns 2 on the check whether a card is ...
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2answers
5k views

How to read Wiegand serial data? (Rx/Tx)

Ok, I am losing my mind... Why is this so damn difficult? Current situation: - 12V Access control device that is connected like this i.e. Wiegand D0 to Tx and D1 to Rx, with voltage dividers. - ...
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1answer
42 views

RC522 modules stop working when more than 2 are connected

So, here's a synopsis of what I am trying to do. I want to put 3 RC522 readers side by side inside of a book, facing the cover, that will be constantly on, using a Rpi zero W. When an RFID chip gets ...
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1answer
572 views

Simple python RFID (RC522) authentication system not working

I am a realative RPi noob so forgive me if this is a simple problem. I am making a keycard system with the RC522 reader, and I have everything wired up correctly. It works with writing and reading ...
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1answer
521 views

Raspberry pi 3 RFID RC522 Card UID is not same with USB RFID Reader

I'm working with RFID RC522 using Raspberrypi 3B+. I'm following https://github.com/mxgxw/MFRC522-python this package and works like a charm. I can able to read the data from the card, able to write ...
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2answers
1k views

How do I use three RC522 RFID readers together?

Ok, So I have one RC522 reader working with no issues. I want to have 3. I don't care which receiver picks up the RFID tag, I just want to know whenever a tag was picked up at all by any of them. ...
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1answer
133 views

RFID RC522 reader pigpio check error

I'm trying to connect Raspberry PI 3 B+ with RFID-RC522 (following this guide https://www.raspberrypi-spy.co.uk/2018/02/rc522-rfid-tag-read-raspberry-pi/). But I got stuck at the hardware ...
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758 views

module RFID-RC522 MySQL, Python

I have the following problem. I am working with Python and RaspberryPi 3 recently. My task is to write the data (RFID together with date and time into the MySQL database). Date and time works, they ...
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804 views

How can I receive data from UHF RFID reader's USB port to my raspberrypi controller

I am new to raspberry pi, currently we want to develop gate control with open/close boom-barrier so we are using an UHF RFID reader and a raspberry pi. I bought a RFID reader that has a USB connector ...
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2answers
357 views

Problem with RFID-RC522 and Raspberry PI Background script

I am working a project to read an RFID tag, and make the buzzer sound. It works correctly in foreground. I call the python script via /etc/rc.local and it is triggered when I execute /etc/rc.local via ...
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1answer
312 views

Login to Raspberry Pi Via Python Script

I am trying to make a system to login to the Raspberry Pi with an RFID tag. I successfully connected the RFID reader RC522 module to the Raspberry Pi and I can retrieve the number of the tag and write ...
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1answer
49 views

How to dynamically determine objects based on some uniqueness?

As the title states I looking for a way to (detect and then) determine a object within some range. The object will be forklift or "train" in the factory. Main goal is to provide some GUI from which it'...
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1answer
788 views

using iso 15693 NFC tags on Raspberry with rc522

Is it possible to read/write ISO 15693 NFC tags using an RC522 chip? So far I do not have much experience with the chip, I downloaded this https://github.com/mxgxw/MFRC522-python library but ...