The recommended power-on sequence is to power up the accelerometer first, followed by the magnetometer. This ensures that the magnetometer is not affected by the accelerometer's power-up sequence.
The accelerometer and magnetometer have different output data rates. The accelerometer can output data at up to 1 kHz, while the magnetometer outputs data at up to 80 Hz. You should use separate interrupt lines or implement a timing mechanism to handle the different data rates.
The INT1 and INT2 pins are interrupt pins that can be configured to generate interrupts based on specific events, such as data ready, overrun, or threshold exceedance. They can be used to wake up a microcontroller from sleep mode or to trigger an interrupt service routine.
The magnetometer requires calibration to compensate for hard-iron and soft-iron effects. You can use the built-in self-test feature to calibrate the magnetometer. Additionally, you can implement a calibration routine that involves rotating the device in a figure-eight pattern to capture the magnetic field in different orientations.
The LSM303DLHTR's performance can be affected by temperature. The accelerometer's sensitivity and offset can vary with temperature, while the magnetometer's sensitivity can decrease at high temperatures. You should consider temperature compensation and calibration to ensure accurate measurements.
LSM303DLHTR datasheet
by STMicroelectronics
