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adafruit PN532 RFID/NFC Shield
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adafruit PN532 RFID/NFC Shield

by officialPiUser on Thu Jul 22, 2021 8:53 am

I recently bought the adafruit PN532 RFID/NFC Shield.
When I plug it in the power led does not light up.
The test programm from the adafruit tutorial doesen't work as well.
It says that no SPI connection is found.
I also measured with a multimeter that the 3,3V are connected right, but the board didn’t respond.
What can I do?

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Re: adafruit PN532 RFID/NFC Shield

by adafruit_support_mike on Sun Aug 01, 2021 9:48 pm

Post a photo showing your hardware and connections and we'll take a look. 800x600 images usually work best.

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Re: adafruit PN532 RFID/NFC Shield

by officialPiUser on Fri Aug 06, 2021 12:54 am

On the other side I have connected the NFC Reader with a Raspberry Pi 3B+ via Jumper Wire.

Pi 3V to3.3V
Pi GND to GND
Pi MOSI to MOSI
Pi MISO to MISO
Pi SCLK to SCK
Pi D5 to SS
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Re: adafruit PN532 RFID/NFC Shield

by adafruit_support_mike on Sat Aug 07, 2021 8:22 pm

As a sanity check, what voltage do you see between the 3.3V and GND pins parallel to the ones with the wire connections?

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Re: adafruit PN532 RFID/NFC Shield

by officialPiUser on Mon Aug 09, 2021 3:08 am

Measuring with the multimeter I see the 3.3V at the free conection points.

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Re: adafruit PN532 RFID/NFC Shield

by adafruit_support_mike on Mon Aug 09, 2021 12:20 pm

Okay, that confirms basic power in the wiring.

Try connecting power to the 5V pin instead of the 3.3V pin. See if that makes the power LED light.

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Re: adafruit PN532 RFID/NFC Shield

by officialPiUser on Tue Aug 10, 2021 9:37 am

It worked.
The power LED turned on.

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Re: adafruit PN532 RFID/NFC Shield

by aahmed1 on Tue Aug 10, 2021 4:16 pm

officialPiUser wrote:It worked.
The power LED turned on.


I am having the same connections you have and I got the shield to be powered on but the device is not recognized on my PI
is it working with you ?

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Re: adafruit PN532 RFID/NFC Shield

by adafruit_support_mike on Tue Aug 10, 2021 5:02 pm

That was my next question:

@officialPiUser: now that the PN532 breakout's power is good, can you control it from the RasPi?

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Re: adafruit PN532 RFID/NFC Shield

by officialPiUser on Wed Aug 11, 2021 12:47 am

Yes.
I can controll it with the Pi and it recognizes the NFC Tags.

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Re: adafruit PN532 RFID/NFC Shield

by adafruit_support_mike on Wed Aug 11, 2021 1:47 pm

Glad to hear you got it working. Happy hacking!

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Re: adafruit PN532 RFID/NFC Shield

by aahmed1 on Wed Aug 11, 2021 2:42 pm

officialPiUser wrote:Yes.
I can controll it with the Pi and it recognizes the NFC Tags.


I have been trying to get it to work for a while now
I have the same connection you have

Pi 5 v to 5v
Pi Gnd to Gnd
Pi MOSI to MOSI
Pi MISO to MISO
PI SCLK to SCK
PI D5 to SS

and SEL0 and SEL1 are both closed or soldered

but I have the busy led always on I do not know why and the PN532 is not detected.

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Re: adafruit PN532 RFID/NFC Shield

by adafruit_support_mike on Wed Aug 11, 2021 7:27 pm

Post a photo showing your hardware and connections and we’ll take a look. 800x600 images usually work best.

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Joined: Thu Feb 11, 2010 2:51 pm

Please be positive and constructive with your questions and comments.


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