NFC Shield - Didn't find PN53x board

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mko2013
 
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Re: NFC Shield - Didn't find PN53x board

Post by mko2013 »

2 more photos

1 photo of the arduino uno r3
1 photo of that digital pin soldering. This also shows the SDA & SCL connected using breakout headers.
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mko2013
 
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Re: NFC Shield - Didn't find PN53x board

Post by mko2013 »

3 more photo (2 here, 1 in next submission)
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adafruit_support_bill
 
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Re: NFC Shield - Didn't find PN53x board

Post by adafruit_support_bill »

From what I can see, the soldering on A5 looks good. A4 appears to be slightly solder-starved.

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adafruit_support_rick
 
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Re: NFC Shield - Didn't find PN53x board

Post by adafruit_support_rick »

From the pictures, it looks to me like the header pins that connect to the analog pins on the Uno (A0-A5) are shorter than the other header pins. If that's so, then they are probably not reaching far enough into the sockets for a solid connection.

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adafruit_support_bill
 
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Re: NFC Shield - Didn't find PN53x board

Post by adafruit_support_bill »

it looks to me like the header pins that connect to the analog pins on the Uno (A0-A5) are shorter than the other header pins.
Good point. I missed that. You can either trim all of them to the same length, or replace the 6-pin header with one that has the same length legs as the others.

mko2013
 
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Re: NFC Shield - Didn't find PN53x board

Post by mko2013 »

Without doing more soldering, I unplugged and re-plugged the two boards together to ensure good contact for A0 to A5. It now works even without using filling the SCL and SCA pins!!

Many thanks!!!

megavolt
 
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Re: NFC Shield - Didn't find PN53x board

Post by megavolt »

I have experienced the very same issue as the others in this thread.

The board comes on, green and red lights, then the red light goes off momentarily and then comes back on and stays on.

The only message output from the serial monitor on the arduino IDE is: Didn't find PN53x board

I have checked the solder a number of times and also checked the continuity using a multimeter so I can see that all the soldered connections are good. When the board is connected to the arduino there is about 1-2cm space at most.

megavolt
 
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Re: NFC Shield - Didn't find PN53x board.

Post by megavolt »

sample photos of board inc soldering  - i have since resoldered with a  better solder.
sample photos of board inc soldering - i have since resoldered with a better solder.
P1040630.jpg (579.8 KiB) Viewed 1035 times

megavolt
 
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Re: NFC Shield - Didn't find PN53x board

Post by megavolt »

Top of Shield - red and green light stays on when plugged in
Top of Shield - red and green light stays on when plugged in
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adafruit_support_rick
 
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Re: NFC Shield - Didn't find PN53x board

Post by adafruit_support_rick »

That looks like it ought to work.
Questions:
Are you using the I2C version of the library?
What kind of Arduino are you using?

megavolt
 
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Re: NFC Shield - Didn't find PN53x board

Post by megavolt »

Doh! No - I used the wrong library.

What a waste of soldering/desoldering time!

Thanks for your help.

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henry weinhard
 
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Re: NFC Shield - Didn't find PN53x board

Post by henry weinhard »

Hi all,

I am also having the "Didn't find PN53x board" problem. The PWR and BUSY lights turn on when I plug the arduino in and stay on forever. This is the serial output (with debug enabled):

Code: Select all

\0xe5Hello!

Sending:  0x0 0x0 0xFF 0x2 0xFFFFFFFE 0xD4 0x2 0xFFFFFF2A 0x0
Didn't find PN53x board
I am using an Arduino Mega 2560, with the I2C version of the library. I've tested all the header joints with a probe to make sure they have a connection.

Picture 1 ("analog in" side headers):
Near Side Solder2.jpg
Near Side Solder2.jpg (478.77 KiB) Viewed 968 times
Picture 2 ("digital IO" side headers):
Far Side Solder2.jpg
Far Side Solder2.jpg (334.42 KiB) Viewed 968 times
Picture 3 (other components):
Board Components2.jpg
Board Components2.jpg (960.34 KiB) Viewed 968 times
Any ideas?

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adafruit_support_bill
 
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Re: NFC Shield - Didn't find PN53x board

Post by adafruit_support_bill »

I am using an Arduino Mega 2560
From the photos, I assume that you are using a pre-R3 version of the Mega 2560 (It does not have the extra two pins on the end of each header).

In that case, you need to add some jumpers to connect to the Mega's i2c pins. Note the two unsoldered holes next to ARef labeled SDA and SCL. Connect a jumper from SDA on the shield to pin 20 on the Mega. And connect another jumper from SCL to pin 21.

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henry weinhard
 
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Re: NFC Shield - Didn't find PN53x board

Post by henry weinhard »

Yes, it works now. Thank you.

Samy001
 
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Re: NFC Shield - Didn't find PN53x board

Post by Samy001 »

Hello,

I have an Arduino Mega 2560 R3 board and want use the PN532 over I2C .

Now , I connected the following pins 5v,gnd,sda,scl . The busy and pwr LED is always on and dont blink even when I place a Milfare Card .

I run the examples files in the Adafreuit_NFCShield_I2C but always I get the message :

"Hello"
"Didn't find PN53x board"

Here are my images :

Image
Image
Image
Image
Image

thx

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