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LSM9DS1TR – Troubleshooting

This page contains some tips in case you are having problems using this product.

Check wiring​

Ensure that your Qwiic cable is properly connected and in good condition. Try using the same cable with another Qwiic-compatible device to verify that it works. If the issue persists, swap it out for a different cable to rule out any possible damage or defects.

Check I2C pins​

If you are connecting the sensor using standard I2C pins on your microcontroller, double-check that you are using the correct ones. Different microcontrollers have designated I2C pins that may not always be labeled the same way. Refer to your microcontroller's documentation to confirm the correct pin assignments.

Scan for I2C devices​

Run an I2C scanner sketch on your microcontroller to check if the sensor is detected. If the scanner does not find any devices, there might be a wiring issue, incorrect pull-up resistors, or a problem with the microcontroller’s I2C bus.

Check for conflicting devices​

If you have multiple I2C devices connected to the same bus, ensure that none of them have conflicting addresses. The LSM6DS3 6-DOF uses 0x6A or 0x6B for its Accelerometer and Gyroscope and 0x1C or 0x1E for the Magnetometer, so verify that no other device is using these addresses.

Try reinitializing​

If the sensor fails to initialize on the first attempt, try calling lsm6ds3trc.begin_I2C() again in your code or resetting your microcontroller with NVIC_SystemReset();. Some initialization issues may be resolved by a simple reboot.

Adjust Output Data Rate​

Set an appropriate Output Data Rate (ODR) for the accelerometer, gyroscope, and magnetometer. Low ODRs (e.g., 10 Hz) are suitable for slow applications, while higher ODRs (e.g., 119 Hz or above) are better for real-time motion tracking.

Example:​
uint8_t dataToWrite = LSM9DS1_ODR_XL_119Hz; // Set accelerometer ODR to 119Hz
dataToWrite = LSM9DS1_ODR_G_59_5Hz;        // Set gyroscope ODR to 59.5Hz
dataToWrite = LSM9DS1_ODR_M_20Hz;          // Set magnetometer ODR to 20Hz

Configure Full-Scale Range​

Set the full-scale range for the accelerometer, gyroscope, and magnetometer based on application requirements.

  • Accelerometer ranges: ±2g, ±4g, ±8g, ±16g.
  • Gyroscope ranges: ±245dps, ±500dps, ±2000dps.
  • Magnetometer ranges: ±4 gauss, ±8 gauss, ±12 gauss, ±16 gauss.
Example:​
uint8_t dataToWrite = LSM9DS1_FS_XL_8g;    // Set accelerometer range to ±8g
dataToWrite = LSM9DS1_FS_G_500dps;        // Set gyroscope range to ±500dps
dataToWrite = LSM9DS1_FS_M_12Gs;          // Set magnetometer range to ±12 gauss

Enable Embedded Functions​

Activate embedded functions such as interrupts or temperature compensation for enhanced functionality. These features allow the device to return the desired data efficiently and improve performance in specific applications.

Example:​
imu.writeRegister(LSM9DS1_CTRL_REG1_M, 0x7C); // Enable magnetometer high-performance mode
imu.writeRegister(LSM9DS1_CTRL_REG6_XL, 0x70); // Configure accelerometer settings
imu.writeRegister(LSM9DS1_CTRL_REG4, 0x38);   // Enable interrupt-driven data ready signals
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