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I've recently purchased an NFC-PN532 module online, which I connected to my arduino board and tried to get working. After connecting the pins and using the PN532 adafruit lib I encountered and error where the board was not being picked up. I was using the 'readMifareClassic' example from the lib and uploaded the example to the board and it resulted in the image below where I would receive a '?' or the first print output which is 'hello' in the code. image of the result output in serial monitor

I'm not that experienced with NFC atm and so im seeking some guidance on what may be the issue. If you need more information please leave a comment.

Thank you

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  • the example has 115200 baud for Serial. your Serial Monitor is set to 9600 baud Commented Jul 6, 2020 at 15:54
  • thanks Juraj, but the chip is not being picked up now and feel as though it might be due to the wiring though i connected the pins according to the code, yet its not picking it up Commented Jul 6, 2020 at 16:21
  • but that is a different Question Commented Jul 6, 2020 at 16:27

1 Answer 1

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A very common error when PN532 module is not recognized, is that you are not using the right bus (I2C, SPI, UART).

Make sure:

In Arduino sketch make sure to follow carefully the lines that need to be commented out.

On the PN532 make sure that DIP switches match your bus configuration

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