DPS310 with Arduino Uno, cant get the simple test provided in the library to work

Other Hardware Sensors
1

I am brand new to coding and i am trying to get my DPS310 sensor to work with my inventr.io HERO board (arduino UNO). I am also using a 128x64 OLED display. I believe the specific name for the display is U8G2_SH1106_128X64_NONAME_F_HW_I2C. I am using the simple test provided within the Sensor library, however i have added a few things along the way because the original code wasn't working either. With my current code I can verify the code without any compiling errors, but in my serial monitor it's telling me that my board is not connected even though i'm pretty sure its hooked up correctly. I could use some help with figuring out why the sensor isn't being found as well as how I could get it to display on my screen.

#include <U8g2lib.h>
#include <MUIU8g2.h>
#include <U8x8lib.h>

#include <Adafruit_DPS310.h>

Adafruit_DPS310 dps;
U8G2_SH1106_128X64_NONAME_F_HW_I2C screen(U8G2_R0, /* reset=*/U8X8_PIN_NONE);
#define DPS310_I2CADDR_DEFAULT (0x77)
// Can also use SPI!
#define DPS310_CS 10

void setup() {
  Serial.begin(115200);
  bool begin_I2C(uint8_t i2c_addr = DPS310_I2CADDR_DEFAULT,
                 TwoWire *wire = &Wire);
  while (!Serial) delay(10);

  Serial.println("DPS310");
  if (!dps.begin_I2C(0x77)) {  // Can pass in I2C address here
                               //if (! dps.begin_SPI(DPS310_CS)) {  // If you want to use SPI
    Serial.println("Failed to find DPS");
    while (1) yield();
  }
  Serial.println("DPS OK!");

  dps.configurePressure(DPS310_64HZ, DPS310_64SAMPLES);
  dps.configureTemperature(DPS310_64HZ, DPS310_64SAMPLES);
}

void loop() {
  sensors_event_t temp_event, pressure_event;

  while (!dps.temperatureAvailable() || !dps.pressureAvailable()) {
    return;  // wait until there's something to read
  }

  dps.getEvents(&temp_event, &pressure_event);
  Serial.print(F("Temperature = "));
  Serial.print(temp_event.temperature);
  Serial.println(" *C");

  Serial.print(F("Pressure = "));
  Serial.print(pressure_event.pressure);
  Serial.println(" hPa");

  Serial.println();

  do {
    screen.clearBuffer();
    screen.setCursor(0, 20);
    screen.print("T: ");
    screen.print(temp_event.temperature);
    screen.print(" *C");

    screen.setCursor(0, 20);
    screen.print("Pressure = ");
    screen.print(pressure_event.pressure);
    screen.print(" hPa");
  } while (screen.nextPage());

  screen.sendBuffer();
}

The following is how I have the components hooked up.

Screenshot 2024-03-31 214049
Screenshot 2024-03-31 214049570×636 233 KB

2

The very first step with a new sensor is to get a library example to work. There is no point in adding features until you understand how the sensor is normally used and how to interpret the data.

You made some mistake, probably wiring. Please try again with just the library example (and nothing else added). If you run into trouble, post that code along with the wiring diagram, and explain what went wrong.

3

I took out the screen and only have the sensor hooked up to the Arduino Uno.
i dont have any compiling errors, however, the serial monitor is saying
"DPS310
Failed to find DPS"

this is the Test code I am using that was provided in the DPS310 examples library.


```cpp

#include <Adafruit_DPS310.h>

Adafruit_DPS310 dps;
Adafruit_Sensor *dps_temp = dps.getTemperatureSensor();
Adafruit_Sensor *dps_pressure = dps.getPressureSensor();

void setup() {
  Serial.begin(115200);
  while (!Serial) delay(10);

  Serial.println("DPS310");
  if (!dps.begin_I2C()) {
    Serial.println("Failed to find DPS");
    while (1) yield();
  }
  Serial.println("DPS OK!");

  // Setup highest precision
  dps.configurePressure(DPS310_64HZ, DPS310_64SAMPLES);
  dps.configureTemperature(DPS310_64HZ, DPS310_64SAMPLES);

  dps_temp->printSensorDetails();
  dps_pressure->printSensorDetails();
}

void loop() {
  sensors_event_t temp_event, pressure_event;

  if (dps.temperatureAvailable()) {
    dps_temp->getEvent(&temp_event);
    Serial.print(F("Temperature = "));
    Serial.print(temp_event.temperature);
    Serial.println(" *C");
    Serial.println();
  }

  // Reading pressure also reads temp so don't check pressure
  // before temp!
  if (dps.pressureAvailable()) {
    dps_pressure->getEvent(&pressure_event);
    Serial.print(F("Pressure = "));
    Serial.print(pressure_event.pressure);
    Serial.println(" hPa");

    Serial.println();
  }
}


This is the updated wiring diagram. Still using the USB port connected to my PC
![Screenshot 2024-03-31 230223|643x447](upload://iCIZNANGLMmq2Yf93GPiibAMpjq.png)
gorillagrodd 4

Screenshot 2024-03-31 230157

5

To check I2C connectivity, run the Arduino I2C address scanner program.

Pullup resistors are absolutely required for I2C communications. Verify that you have them on SDA and SCL.

Your wiring appears to be incorrect (SDI, not SDO). Study the Adafruit wiring guide: Pinouts | Adafruit DPS310 Precision Barometric Pressure and Altitude Sensor | Adafruit Learning System

6

It was the wiring. using SDI instead of SDO was the key. Thank you very much, I appreciate the help.