MFRC522 Raspberry 3b+ random read problem

[dida110]

I have a really strange problem with my MFRC522 card-reader:
-When I make a reboot and start the Read.py file like this: "python Read.py" it always looks like this:

Code: Select all

root@raspberrypi:~/MFRC522-python# python Read.py 
Welcome to the MFRC522 data read example
Press Ctrl-C to stop.

Sometimes this works fine and I can read my NFC-cards.
BUT sometimes it doesn't work and I have to abort and reopen the with "python Read.py" then it mostly works if not, I have to do a reboot.

How can this be ?

Is there a log or something to see why it's not working?

I'm using the Raspberry 3b+ with the newest RASPBIAN STRETCH LITE.

[DougieLawson]

Since you're using https://github.com/mxgxw/MFRC522-python you should open an issue at: https://github.com/mxgxw/MFRC522-python/issues to get some help from the program's author/developer.

[dida110]

Thanks I wrote an issue as you advised me.

[dida110]

I finally found the solution:

I bought a batch of "defect" MFRC522-Reader ...

So it was a hardware defect and not a software.