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The script runs in a loop and will keep waiting and displaying any detected UIDs. When it finds a tag it reads the UID and displays it on the screen. The script waits for a tag to be detected by the RFID module. Run the “Read.py” script using the following command : python Read.py You can navigate to these using : cd MFRC522-python In the “MFRC522-python” directory there are some example scripts.

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The following commands will download the required library : cd ~ It relies on the SPI-Py library installed in the previous step. Download RC522 Python Libraryįinally download a library that helps talk to the RC522 module over the SPI interface. This installs it for both Python 2 and Python 3. This can be installed using the following sequence of commands : cd ~ This installs it for both Python 2 and Python 3.Īlthough I tend to use “py-spidev” to drive the SPI interface in Python for this application I used “SPI-Py”.

#Raspberry pi tn5250 install#

Next install the spidev library using : sudo apt-get install python-spidev python3-spidev If you don’t want to read that then simply r un : sudo raspi-configįrom the terminal or “Raspberry Pi Configuration” from the desktop and enable SPI under the “Interfacing Options” section. This is explained in more detail in my Enable SPI Interface on the Raspberry Pi tutorial. The SPI interface has to be enabled as it is disabled by default. The RC522 module uses the SPI interface to communicate with the Pi. Please refer to the Raspberry Pi GPIO Header page for details of the Pi’s header pin layout. The wiring details are also shown in the table below : RC522 Header I used a 7-way female-female jumper cable to connect the module to the Pi. The pins are labelled on the PCB but the markings are quite squashed. The RC522 module has eight pins but we only need to connect seven of then to the Raspberry Pi’s GPIO header. The modules do not normally come supplied with jumper cables so you will need seven female-female jumper cables to connect it directly to the Pi.

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One keyring style tag and one plain white “credit-card” style card were also included.Įach of these devices has a unique code (UID) which it is possible to read using a Python script. I soldered on the right-angle header so that the cable would be inline with the PCB. My module came with two different styles of header pins, one of which needed to be soldered onto the PCB. The antenna track can be seen on the PCB and it is this that communicates with a nearby tag. There are different modules available from the usual sources but mine is a blue PCB with eight connections. They can read an ID from a smart phone but the ID is different every time so not very useful in most circumstances. These RFID modules can not read contactless bank cards. It is possible to buy additional cards and tags but you should make sure they support one of those standards.

Modules that use the RC522 chip should support all tags that use the following standards : The obvious application is a security system where you use a tag to activate or deactivate an alarm but other applications include time and attendance systems and games. Both of them can be hidden inside other objects to give them a unique ID that can be read by the Pi. The contactless tags can be carried on a key-ring and the cards fit nicely in a wallet.

This is potentially a great feature to include in a security system or any application where you need to identify an object or person without them pressing buttons, operating switches or other sensors. RC522 RFID modules are a simple add-on you can connect to a Raspberry Pi to read MIFARE tags and cards.