Skip to main content
Share Your Experience: Take the 2024 Developer Survey

Questions tagged [rfid]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
15 views

RFID reader only reads data sometimes on Pi 4

I have an RFID 522 reader connected with Raspberry Pi 4 and it only works sometimes. I followed the schematic from a tutorial and used the corresponding code. The reader works perfectly fine, detecing ...
Mourghe's user avatar
0 votes
1 answer
20 views

Rasberry Pi Pico + RFID-RC522 restarts pi pico

I am using this micropython library -> https://github.com/wendlers/micropython-mfrc522/blob/master/mfrc522.py I have my pi pico connected to my raspberry pi 4 over USB. When I run read.do_read() it ...
user23893926's user avatar
0 votes
1 answer
25 views

Error when running python read.py and write.py (MFRC552) library

so im getting an error while setting up my RFID552 on RP 4B i downloaded this library https://github.com/mxgxw/MFRC522-python When I run the Read.py, i get an error saying error in line 33 which is ...
user21184434's user avatar
1 vote
0 answers
356 views

Connecting a RFID-RC522 with Raspberry Pi 5

I bought a new Raspberry Pi 5 for a project that has RFID-tag reading and writing functions. I tried using some old python scripts(MFRC522-python) that uses RPi.GPIO to interact with the IO pins but ...
Bruh255's user avatar
  • 11
0 votes
0 answers
15 views

Pi camera to be activated when rf waves are detected

My cars have Fastags (RFID based cards) installed on the windshield. On the highway, on every toll booth there are rfid scanners that reads my card and deduct the payment. Since there is a possibility ...
Bala's user avatar
  • 1
0 votes
0 answers
164 views

ACR122U Not Connecting after First NFC Scan with nfcpy library

I am trying to read an nfc card from my ACR122U-A9 with a raspberry pi, but it only works the first time after it is plugged in. After I clf.close(), I can't open it again without plugging it back in. ...
Brent Roberson's user avatar
0 votes
0 answers
35 views

Raspberry 3 with touch screen and RFID scanner power supply

I have some cheap scanner I'm playing around. It's USB connected and it works. I wonder can it be safe to make separate power for scanner, bcs allready have touch screen taking power from raspberry ...
ivanknezevic's user avatar
0 votes
1 answer
193 views

can't send spi message: Invalid argument

I'm using the SPI library SPI-Py with MFRC522 RFID Library. I'm getting this error when I run REad.py. This issue is related to the SPI-Py library can't send spi message: Invalid argument I have ...
niranjan's user avatar
0 votes
0 answers
35 views

How to Read Result from Two Different USB Ports and Differentiate Them

I have a project where I control to access door with a Raspberry Pi. I want to connect two USB RFID readers to the Raspberry Pi. based on the read from each one, it will open a specific door. Right ...
Shwan's user avatar
  • 1
1 vote
0 answers
182 views

How to read RFID tag value using Wiegand protocol?

I am trying to read RFID tag values using Paxton P75 reader. Here I have already connected reader with wiznet w5500 pico. and apply https://github.com/Rajan244/RFID/blob/main/wiegand.py to read the ...
R. Baraiya's user avatar
2 votes
0 answers
66 views

How to decode RFID value?

I am working on an attendance system project using Raspberry Pi Pico W, EM - 18 reader and MicroPython. Not sure of the tag type here, but I guess it is 125KHz tag. More, my card is keeping '29714856'...
R. Baraiya's user avatar
1 vote
0 answers
135 views

how to give power and ETH to pi pico W at same time?

Learning following project https://github.com/sbcshop/Raspberry-Pi-Pico-RFID-Expansion. Now the requirement is to connect project with Ethernet network, also provide power supply at same time. Qustion:...
R. Baraiya's user avatar
0 votes
1 answer
451 views

how to use a multiple rc522 (RFID) sensors with i2c on a PICO with a Adafruit PCF8575 board

I've been looking through the web for the case of multiple rc522 (RFID sensors) attached to a PICO/W using I2C. Most of the examples and Micropython library code seem to be using SPI. Can someone ...
quinn's user avatar
  • 101
0 votes
0 answers
79 views

Raspberry pi Touch Screen Display unable to connect other modules due to having to use the same pins

Good day~ I've been working with a project that involves a raspberry ,a display touch screen, RFID reader and GSM module. However after setting up the display touch screen for raspberry pi, I noticed ...
Laurenz Garcia's user avatar
1 vote
2 answers
1k views

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 ...
Addi's user avatar
  • 11
-3 votes
1 answer
234 views

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 ...
Kaigo's user avatar
  • 121
0 votes
2 answers
4k 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 ...
Kaigo's user avatar
  • 121
1 vote
1 answer
529 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 ...
oli's user avatar
  • 111
0 votes
0 answers
123 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 ...
clockw0rk's user avatar
  • 216
3 votes
1 answer
1k 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 ...
fabbbles's user avatar
0 votes
0 answers
29 views

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:/...
محمود طاهر's user avatar
0 votes
1 answer
206 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 ...
Simple Simon's user avatar
1 vote
1 answer
811 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 ...
fabbbles's user avatar
2 votes
2 answers
1k 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 ...
Pouya's user avatar
  • 45
1 vote
0 answers
2k views

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 ...
Chiwda's user avatar
  • 171
0 votes
1 answer
1k 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 ...
Jen's user avatar
  • 1
0 votes
1 answer
923 views

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, ...
Besi's user avatar
  • 884
1 vote
0 answers
301 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 ...
Dark Patate's user avatar
0 votes
0 answers
31 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'...
PascalS's user avatar
  • 121
1 vote
0 answers
1k 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 ...
WantToKnowMore's user avatar
1 vote
0 answers
93 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 ...
WantToKnowMore's user avatar
2 votes
0 answers
556 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 ...
crimson589's user avatar
0 votes
5 answers
2k 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 ...
Ahtisham Ashraf's user avatar
1 vote
0 answers
32 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 ...
John Keane's user avatar
1 vote
1 answer
399 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 ...
شيماء عصام محمدطاهر's user avatar
0 votes
2 answers
424 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/...
JohnW's user avatar
  • 9
2 votes
0 answers
173 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 ...
Joe L's user avatar
  • 21
1 vote
0 answers
1k 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 ...
Łukasz Hoffmann's user avatar
0 votes
2 answers
68 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 ...
Ionică Bizău's user avatar
1 vote
0 answers
952 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 ...
Dark Patate's user avatar
0 votes
1 answer
826 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=...
Kirill_code's user avatar
1 vote
1 answer
962 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 ...
totallyNotLizards's user avatar
-1 votes
1 answer
128 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 ...
Dark Patate's user avatar
2 votes
0 answers
768 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
ikenas's user avatar
  • 121
2 votes
1 answer
111 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+?
Ak282616's user avatar
0 votes
1 answer
400 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 ...
Ouail Derghal's user avatar
3 votes
0 answers
586 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 ...
Librarian's user avatar
0 votes
1 answer
301 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 ...
lisa-thehexbit's user avatar
1 vote
1 answer
210 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 ...
Abhi's user avatar
  • 11
3 votes
1 answer
8k 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://...
627117717.pr's user avatar