Is my Arduino Nano 33 BLE Sense defective?

Hardware Nano Family Nano 33 BLE Sense
1

I'm using an Arduino Nano 33 BLE Sense board. On this board, D5 and D6 are not behaving correctly. I'm trying a simple test with no other hardware connected:

const int pinD5 = 5; // P1.13
const int pinD6 = 6; // P1.14

void setup() {
  // Configure D5 and D6 as outputs
  pinMode(pinD5, OUTPUT);
  pinMode(pinD6, OUTPUT);

  // Initialize both pins to LOW
  digitalWrite(pinD5, LOW);
  digitalWrite(pinD6, LOW);
}

void loop() {
  // Set D5 and D6 HIGH
  digitalWrite(pinD5, HIGH);
  digitalWrite(pinD6, HIGH);
  delay(1000); // Wait 1 second

  // Set D5 and D6 LOW
  digitalWrite(pinD5, LOW);
  digitalWrite(pinD6, LOW);

  delay(1000);
}

When I measure voltages, D6 always shows 3.3v and doesn't change. D5 fluctuates between about 1.6v and 2.1v every second.

I also tried a test with reading them as inputs. They always show a HIGH value and it never changes.

No other IO I've found so far has these issues. Just D5 and D6.

What's going on here?

2

If it's new, return it.

3

It was unopened in the box, but it's past its return date.

4

My suspicion is there's some manufacturing flaw, possible bad solder.
There's nothing 'special' about them that makes them function any different from the others.

5

Contact the vendor and inform them of your experience. As a goodwill gesture, they may offer to replace the item for you.

6

Hello,

Would you please contact Arduino support using the form : https://www.arduino.cc/en/contact-us/