Nano 33 BLE Sense Rev2 HS3003 sensor not working or initializing

Official Hardware Nano Family Nano 33 BLE Sense
1

I purchased a new Nano 33 Sense Rev2 and used it for the first time for a class project. In this project, we were required to use our Arduino to take temperature and humidity readings using the HS3003 sensor. To do this, we were required to connect our Arduino to our machines using a micro-USB with data transfer and write code that allowed us to take readings. After taking readings of the room, we were instructed to get our finger damp with water (not dripping) and touch it to the sensor to see the changes. I did this by holding an ice cube or dipping my finger in water, flicking the excess water off, and touching the board. I was able to successfully do this twice, and on my third attempt, the sensors were no longer initialized or functioning. It has been a few weeks and my new board still does not work. I correctly installed all board dependencies to the Arduino IDE and was able to successfully take readings until I touched my finger to the HS3003 sensor. None of my other classmates experienced any issues when touching their wet finger to the board. I will paste my code below.

#include <Arduino_HS300x.h>

void setup() {
     Serial.begin(9600);

     while (!Serial);

     if (!HS300x.begin())
     {
          Serial.println("Humidity/temperature sensor initialization failed.");
          while(1);
     }
}

void loop() {
     float temp = HS300x.readTemperature();
     float humidity = HS300x.readHumidity();

     Serial.println(String("Temperature = ") + temp + " degrees Celsius");
     Serial.println(String("Humidity = ") + humidity+ " %");

     Serial.println();
     delay(3000);
}
2

Did you get the 'failed message from the begin?

3

Yes

4

Then that is where you need to focus your debugging. Step one is to quadruple check all wiring around the sensor. Make sure all grounds are solid and that the correct voltage is beinbg used. If that does not reveal the issue, try a second sensor (you should have at least 3 in case the swap also fails which means a wiring error most likely)

5

Others' experience/s notwithstanding, I see the "damp finger" approach described inadvisable. Who came up with that idea? I'd think the axillary method should be sufficient.

Got my Sense Rev2 out --

Temperature = 29.77 °C
Humidity    = 37.01 %

Temperature = 29.70 °C
Humidity    = 35.77 %

Temperature = 29.73 °C
Humidity    = 35.94 %

Temperature = 29.70 °C
Humidity    = 35.99 %

Temperature = 29.68 °C
Humidity    = 35.44 %

Temperature = 30.06 °C
Humidity    = 44.44 %

Temperature = 30.45 °C
Humidity    = 49.44 %

Temperature = 30.72 °C
Humidity    = 51.61 %

Temperature = 30.96 °C
Humidity    = 52.71 %

Temperature = 31.15 °C
Humidity    = 53.36 %

Temperature = 31.37 °C
Humidity    = 53.81 %

Temperature = 31.27 °C
Humidity    = 47.40 %

Temperature = 31.19 °C
Humidity    = 41.82 %

Temperature = 31.10 °C
Humidity    = 37.85 %

Temperature = 31.01 °C
Humidity    = 35.79 %

Temperature = 30.96 °C
Humidity    = 35.26 %

Temperature = 30.92 °C
Humidity    = 35.01 %

Temperature = 30.86 °C
Humidity    = 34.84 %

Temperature = 30.79 °C
Humidity    = 35.14 %

And here's a plot (humidity only) showing obvious results as well --

image
image774×839 27 KB

The big change and the one after it, in the last third or so, were from putting it in my pocket.