Hi @Brenden_PLUS ,
The IMU’s sensor hub manages communication with the magnetometer, offloading I2C/SPI transactions from the microcontroller. This reduces MCU workload and bus complexity.
The IMU can manage sensor polling and power states more efficiently, potentially reducing overall power consumption.
Use the sensor hub connection if you want simpler wiring and reduced MCU load, and plan to perform sensor fusion including magnetometer data on the MCU.
Connect the LIS2MDL directly to the MCU if you want full control over magnetometer data handling or if you have specific timing/frequency requirements.
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