Issues with Grove-3-Axis-Digital-Accelerometer

Using Arduino Sensors
1

Hi Everyone.

Im trying to connect a Grove - ADXL345 - 3-Axis Digital Accelerometer(±16g) to my Ardunio Uno R3 but I keep getting the following output when using serial monitoring. I swapped out the Grove - ADXL345 - 3-Axis Digital Accelerometer(±16g) for another and I get the same results with that one too.

Failed to initialize ADXL345 accelerometer.

Below is my code.

#include <Wire.h>
#include <ADXL345_WE.h>

ADXL345_WE accelerometer = ADXL345_WE(0x53);  

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

  if (!accelerometer.init()) {
    Serial.println("Failed to initialize ADXL345 accelerometer.");
    while (1);
  }

  accelerometer.setRange(ADXL345_RANGE_16G);
}

void loop() {
  xyzFloat rawValues = accelerometer.getRawValues();

  Serial.print("x: "); Serial.print(rawValues.x);
  Serial.print("  y: "); Serial.print(rawValues.y);
  Serial.print("  z: "); Serial.println(rawValues.z);

  delay(100);
}

I dont think this should be overly difficult but I cant seem to solve this. I confirmed SDA is connected to SDA on the Arduino board (Also tried connecting it to A4 - no luck), I confirmed SCL is connected to SCL (Also tried connecting it to A5 - no luck).

I ran the following IC2 scanner to confirm the sensor is at 0x53

#include <Wire.h>

void setup() {
  Wire.begin();
  Serial.begin(9600);
  Serial.println("\nI2C Scanner");
}

void loop() {
  byte error, address;
  int nDevices;

  Serial.println("Scanning...");

  nDevices = 0;
  for (address = 1; address < 127; address++) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();

    if (error == 0) {
      Serial.print("I2C device found at address 0x");
      if (address < 16)
        Serial.print("0");
      Serial.print(address, HEX);
      Serial.println("  !");
      nDevices++;
    }
  }

  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("Done\n");

  delay(5000);
}

and get to following output.

Scanning...
I2C device found at address 0x53 !
Done

Swapped out multiple jumper cables and confirmed confirmed continuity with my multimeter.

Am I missing something simple/key?

Thanks!

2

How have you been connecting the device? This shows problems in connections with SPI and I2C...

3

I was able to correct the issue by using the following library <ADXL345.h> and not <ADXL345_WE.h>

1 Like
4

This is good!

Did you read all the warnings about low voltages?

5

OoOo.

No I did not. The part about getting different output when connected to 3.3V and 5v?

6

Yes, the low voltage references. The text in the link is very thorough, with drawings and examples.