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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Raspberry Pi 4 having issues reading from a RFID-RC522

I am following this tutorial to get my raspberry pi set up with an RFID module. Unfortunately, I cannot get it to work. Specifications Raspberry pi 4 Model B Raspbian GNU/Linux 11 (bullseye) Mifare ...
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-3 votes
1 answer
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Is it possible to connect multiple sensors to raspberry pi? How do I expand on the standard gpio pins?

I followed the below diagram and connect the MFRC522 RC522 RF IC Card Reader to the RPi. And now I would like to connect 10 rfid modules to the raspberry pi. I’ve looked at two ways to do this Use a ...
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1 vote
1 answer
440 views

How to connect multiple RFID readers (RC522) to a RPi?

I'm trying to connect x9 RC522 RFID readers to an RPI. I'm wondering if it can be done using the standard RPi GPIO pins or if I need some other controller. Also, it's worth mentioning that it will ...
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1 vote
1 answer
169 views

RF Direction Finding

Is it possible to build a system with a raspberry pi and antennas to find the rough direction of a radio frequency emitter such as a Wifi router, a Bluetouth Tag, or, a 5G cell tower? I cannot use ...
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pause raspberry pi 4 taking input from MFRC522 while the video is playing

The cards have video file names written to them. When a card is placed on the MFRC522 sensor, the video is played. Now, I am unable to figure out how to stop or pause the raspberry PI from taking the ...
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45 views

Reading text from RFID card using MFRC522 (sort of)

Aight, this will probably get taken down but hear me out. So what I'm trying to do is open a website upon RFID card being read, my code currently looks like this: from time import sleep import sys ...
0 votes
0 answers
72 views

Using RFID-RC522 with spi on RBpi 3B+

Hello_friends, I am trying to get a RFID reader working on a Raspberry 3b+ That same setup and codebase used to work well on the older 3b+ model from 2015 (the current one is 2017 edition), but now ...
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3 votes
1 answer
228 views

Wiegand wiring guidance on Pi 4 with voltage step-down

Ok so following on from my previous post here. I have decided to start with the Wiegand wiring interface. I've drawn a diagram below to illustrate how I plan to wire everything up. Would appreciate if ...
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0 answers
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i need execute code when user input number in terminal in python3

I have this python3 code. import RPi.GPIO as GPIO import requests payload = {} headers = {} GPIO.setmode(GPIO.BCM) GPIO.setup(14, GPIO.OUT) string = input() def buclick(event): url = "http:/...
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1 answer
112 views

'sudo' not recognized as an internal or external command. Trying to run sudo raspi-config

I am building my first project on a Raspberry Pi 3 using an RFID HAT for Raspberry Pi. I am using Windows 10 IOT Core. The manual for the RFID HAT begins with this: I2C/Serial interface is disabled by ...
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1 answer
167 views

RFID card readers with Pi 4

I have been working on an access control project which started out as scanning QR codes using a Pi camera and then triggering a relay using the Pi to open up electro-magnetic locks. I would like to ...
2 votes
2 answers
559 views

Connecting RC522 RFID module to Raspberry Pi 4

I connect my RC522 RFID module to my Raspberry Pi 4 according to https://pimylifeup.com/raspberry-pi-rfid-rc522/ so we have Write.py and Read.py: Write.py: #!/usr/bin/env python import RPi.GPIO as ...
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1 vote
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How to connect an HID RFID reader to my Raspberry Pi

I have seen plenty of tutorials to connect an RC522 module to a Raspberry Pi, but I have been given an HID iClass SE reader to integrate into our system which runs off a Raspberry Pi 3B. I have no ...
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0 votes
1 answer
365 views

How to control multiple Raspberry Pi from single server

Using raspberry pi 3B+ I am detecting RFID. I have done network booting of these raspberry pi in order to avoid the SD card corruption from Debian GNU desktop by following this link. Now I want to ...
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0 votes
1 answer
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Read from RFID sensor using UART

I have a board for the RDM6300 which can read RFID tags. I could successfully test the board using an ESP32. Here is the micropython code: from machine import UART, Pin import time uart = UART(1, ...
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1 vote
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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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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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1 vote
0 answers
387 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 ...
1 vote
0 answers
55 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 ...
1 vote
0 answers
320 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 ...
0 votes
5 answers
979 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 ...
1 vote
0 answers
24 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 ...
1 vote
1 answer
159 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 ...
1 vote
0 answers
121 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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1 vote
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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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1 vote
0 answers
735 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 ...
0 votes
2 answers
50 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 ...
1 vote
0 answers
594 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 ...
0 votes
1 answer
443 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=...
1 vote
1 answer
455 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 ...
-1 votes
1 answer
124 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 ...
2 votes
0 answers
513 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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2 votes
1 answer
84 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+?
0 votes
1 answer
197 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 ...
3 votes
0 answers
383 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 ...
0 votes
1 answer
197 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 ...
1 vote
1 answer
153 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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3 votes
1 answer
5k 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://...
1 vote
0 answers
99 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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1 vote
2 answers
1k 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,...
1 vote
0 answers
229 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 ...
1 vote
1 answer
328 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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1 vote
1 answer
289 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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0 votes
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644 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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173 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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2 votes
0 answers
58 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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0 votes
0 answers
207 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 ...
2 votes
1 answer
1k 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 ...
2 votes
2 answers
2k 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 ...
0 votes
0 answers
66 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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