Qwiic RFID not talking to Qwiic Pro Micro

Qwiic System
1

I bought the Qwiic RFID kit an the Qwiic Pro Micro USB-C and I’ve followed the Hookup Guide for the RFID. I’ve installed the SparkFun Qwiic RFID Arduino Library in my Arduino IDE. I have loaded the first two suggested example sketches and neither one of them works. I did solder in the wire from RFID - Int to Pro Micro Pin 3 for the interrupt functionality. Here are the diagnostic steps I’ve tried so far:

  • The RFID board is powered up and beeps when a card is in proximity (so the RFID board seems to be working).

    I’ve attached an external LED and added sketch commands to blink the LED, so I know the Pro Micro is working.

    I’ve started with a simple sketch and added lines and determined that it hangs up on the line following line:

      if(myRfid.begin())
    Serial.println("Ready to scan some tags!"); 
  else
    Serial.println("Could not communicate with the Qwiic RFID Reader!!!");

    (Neither Serial.println command executes and the main loop never executes)

    I changed the I2C address in my sketch to the alternate 0x7C, just in case.


    • Attached is a photo of my assembly.

    20220606_113157.jpg
    20220606_113157.jpg3024×4032 2.01 MB

    2

    I have just completed an I2C scan and that also fails without returning anything.