To close this topic : this particular module doesn't have anything close to PoE (passive nor active)

The PoE labels on the board are Fake or leftover.

Hello

I'm trying to make my PN532 NFC RFID module V3 kits working with my Arduino Uno.

According to this manual to communicate with the Arduino in I2C mode I need to set the DIP switch like this :

Channel 1: ON
Channel 2: OFF

Here is the wiring:

I'v tried with this lib and the Adafruit one

There is my code (it's the iso14443a_uid sketch)

#if 0
  #include <SPI.h>
  #include <PN532_SPI.h>
  #include "PN532.h"

  PN532_SPI pn532spi(SPI, 10);
  PN532 nfc(pn532spi);
#elif 0
  #include <PN532_HSU.h>
  #include <PN532.h>
      
  PN532_HSU pn532hsu(Serial1);
  PN532 nfc(pn532hsu);
#else 
  #include <Wire.h>
  #include <PN532_I2C.h>
  #include <PN532.h>
  #include <NfcAdapter.h>
  
  PN532_I2C pn532i2c(Wire);
  PN532 nfc(pn532i2c);
#endif
  
void setup(void) {
  Serial.begin(115200);
  Serial.println("Hello!");

  nfc.begin();

  uint32_t versiondata = nfc.getFirmwareVersion();
  if (! versiondata) {
    Serial.print("Didn't find PN53x board");
    while (1); // halt
  }
  
  // Got ok data, print it out!
  Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX); 
  Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC); 
  Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC);
  
  // Set the max number of retry attempts to read from a card
  // This prevents us from waiting forever for a card, which is
  // the default behaviour of the PN532.
  nfc.setPassiveActivationRetries(0xFF);
  
  // configure board to read RFID tags
  nfc.SAMConfig();
    
  Serial.println("Waiting for an ISO14443A card");
}

void loop(void) {
  boolean success;
  uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
  uint8_t uidLength;                        // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
  
  // Wait for an ISO14443A type cards (Mifare, etc.).  When one is found
  // 'uid' will be populated with the UID, and uidLength will indicate
  // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
  success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength);
  
  if (success) {
    Serial.println("Found a card!");
    Serial.print("UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes");
    Serial.print("UID Value: ");
    for (uint8_t i=0; i < uidLength; i++) 
    {
      Serial.print(" 0x");Serial.print(uid[i], HEX); 
    }
    Serial.println("");
    // Wait 1 second before continuing
    delay(1000);
  }
  else
  {
    // PN532 probably timed out waiting for a card
    Serial.println("Timed out waiting for a card"
[/code]);
  }
}

This is my output

Hello!

Thanks for help

To close this topic : this particular module doesn't have anything close to PoE (passive nor active)

The PoE labels on the board are Fake or leftover.

There isn't any DC/DC converter, but there is 2 pin dedicated to PoE according to the labels on the PCB

In standard PoE yes, but I'm trying everything here and I can't get current on those pin.
I'v tried V+ on pin 8 and V- on pin 7, V+ on pin 4, 5, V- to pin 7, 8 and still nothing...

this guy : http://hazymat.co.uk/2015/01/home-automation-poe-with-arduino-in-praise-of-diy-poe/ had the same issue...

Is it possible that this ethernet breakout has "fake" PoE label ?

Nobody ?

Hello everyone !

I'm trying to supply power to my project using this breakout board (W5100) and a PoE injector.

The board have PoE+ and PoE- pin directly connected on ethernet pin 8 and 7 but when I provide power through the ethernet cable, there isn't any power on PoE+ and PoE-.

Probably I'm doing something wrong...

Can someone give me a little help ?

Thanks a lot !