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 minutes) the reader just stops reading, but the power is still on indicated by a red LED on the reader.

I'm using this to do the card reading and also followed the gpio wiring shown. I'm having a hard time figuring out what's wrong since I only experience this on my Pi 3 Model B+(2017), I also have Pi 4's which I don't experience this in. Sometimes restarting the application works and it can read again, sometimes I have to reboot the pi itself. Both are running buster, updated. Same application.

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    add some console.log's to the code where you suspect it may be failing Commented Apr 28, 2021 at 0:38
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    @JaromandaX I already tried debugging the section of the javascript code responsible for reading the card, it's not detecting any card at all.
    – crimson589
    Commented Apr 28, 2021 at 0:44
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    so, you can still successfully communicate with the RC522, it just doesn't detect cards? Commented Apr 28, 2021 at 0:46
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    does the issue occur after a specific number of reads?
    – jsotola
    Commented Apr 28, 2021 at 0:49
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    @JaromandaX browsed a few of them like syslog, user.log, boot, kern. didn't find anything that caught my attention, anything I should be looking for?
    – crimson589
    Commented Apr 28, 2021 at 2:34


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