All Questions
20 questions
0
votes
0
answers
104
views
Cannot determine pins to use when connecting 3 SPI devices to Pi 5
I am trying to connect 3 SPI devices to my pi 5, they are all RFID-RC522 modules and so they all have the same device id, so I put them on separate busses.
I researched and selected these three ...
- 101
0
votes
0
answers
134
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 ...
- 216
3
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 ...
- 55
1
vote
0
answers
315
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 ...
- 111
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 ...
1
vote
1
answer
793
views
Sharing SPI Adafruit PiTFT and RFID RC522
I have a Pi Zero 1.2 connected to an Adafruit 2.8" PiFTF screen and a RFID-RC522 board. I also have a thermal printer connected to TX/RX, but I don't think this plays a part in my question.
The TFT ...
0
votes
1
answer
953
views
Use RFID reader AND a 4x4 matrix keypad with breadboard
I am trying to set up a pi to use rfid to scan a card and if the card is correct, the user will enter in a 4 digit code into a 4x4 matrix keypad. Each device works perfectly fine independently however ...
0
votes
1
answer
3k
views
BCM.GPIO and BOARD.GPIO
For a school project I wanted to use a 128x64 OLED i2c OLED screen and a RFID reader. I tested everything separate and it worked, but when I wanted to join everything in my main program it failed, ...
2
votes
1
answer
9k
views
Connecting PN532 NFC module to Raspberry Pi
I want to connect the PN532 NFC module to my Raspberry Pi.
The pin layout is as follows:
The original product page is here on eBay.
The page says:
Operating Voltage: 3.3V
Power Supply Voltage: 3.3~...
- 395
2
votes
3
answers
7k
views
Raspberry Pi 3B RFID RC522 - not reading data
I know this topic has been already discussed in many aspects here and other forums but I haven't found help for my problem (which I guess may be just slightly different than in older topics because ...
- 123
0
votes
3
answers
1k
views
How to use RC522 RFID on spidev1.x on Raspberry Pi 3
I followed this https://raspberrypi.stackexchange.com/a/56513/57412 trying to use my RC522 on spi 1.0 but I'm stuck.
Could someone give me a hand wiring correctly (I hope it is) and how to use the ...
- 1
1
vote
2
answers
8k
views
how to enable spi1? / pi 3 and two rc522 RFID readers
Is it possible to connect two RC522 readers with one RaspberryPi 3?
As far as I know I should just choose different CS pins for them (Add more than 2 SPI slaves).
I have following connections:
1st ...
- 155
2
votes
0
answers
474
views
How construct MISO byte order with SPI interface
I have a raspberry Pi 3, model B. I have an RFID-RC522 hooked up to it using SPI.
I want to read from it, raspi being master device, RFID being slave(MISO). I am struggling to construct the correct ...
1
vote
0
answers
1k
views
Connect two SPI RFID readers in the Raspberry Pi B +
I followed this tutorial to connect one RC522 RFID reader in a Raspberry Pi.
http://www.nikolaus-lueneburg.de/2014/06/rfid-rc522-modul-mit-spi-schnittstelle/
I'm able to connect it to work with ...
1
vote
2
answers
5k
views
MFRC522 Not working over SPI Interface
I am running (on a Pi3) an MFRRC522 reader - much like this one:
It has been working fine, but after I changed SD card, to increase capacity - whilst also doing a new Raspian install I haven't been ...
- 163
1
vote
0
answers
4k
views
RFID RC522 Stops reading data after reading data continuously
I'm trying to make RFID RC522 work with my Raspberry Pi 3 B+.
I use the library MFRC522, and the the sensor can read data most of the times. However if I just put the card on the sensor it will stop ...
3
votes
0
answers
2k
views
Pi4J and Mifare RC-522 via SPI
I am having problems with coding a program that allows me to read RFID Tags with Pi4J on my Raspberry Pi 2 Model B.
I am totally new to Python and would prefer a program written in Java to save some ...
- 31
3
votes
0
answers
513
views
Raspbian Jessie+ breaks SPI (RFID Reader MFCR 522)?
Long version:
I have a very odd problem: I connected a Mifare MFRC 522 RFID Reader to my raspberry Pi (it handles communication via SPI). For that I used one of the many Tutorial already on the ...
- 39
-1
votes
2
answers
4k
views
using wiringPi and bcm2835
i am trying to make an aplication where i integrate rfid reader and an LCD, i have acomplished this by two different libraries, wiringPi for LCD and i found a library called rc522 for the rfid. and ...
- 101
5
votes
2
answers
13k
views
Connecting to an RC522 RFID reader
I'm trying to connect an RC522 RFID reader to the a Raspi via its SPI port. Up till now, I have tried several different pieces of code that are supposedly working, however, I have had no success with ...
- 151