Magnetic sensor

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Magnetometer

A magnetometer is a physical electronic component used in some VR headsets and controllers to do orientation tracking by measuring the strength and direction of a magnetic field. Magnetometers in consumer electronics such as smartphones and tablets are used for compass apps by measuring Earth's magnetic field along 3 perpendicular axis of X, Y and Z. It is also called a magnetic sensor.

In virtual and augmented reality, magnetometers are part of IMUs or alongside them inside a device. They help with rotational tracking of HMDs and input devices.

Commercial standalone magnetometers[edit]

  • ST IIS2MDC
  • ST LIS2MDL
  • Infineon TLV493D
  • Bosch BMM350 (+/-2000 microtesla range, resolution of ~0.1 microtesla, geomagnetic)
  • Allegro ExtremeSense line

IMUs with magnetometers built in[edit]

  • LSM303AH

Devices with magnetometers[edit]

  • All iPhones starting with the iPhone 3GS in 2009

References[edit]