Digital Attitude Sensors

An electronic compass able to sense both direction and pitch and roll also in GPS denied environments.

Unlike a GPS it doesn’t have to be moving to determine azimuth. Achieving high level of accuracy without any communication with external references like cell towers or satellites. Rugged, requires very little power and has no moving parts. Weatherproof enclosures are available.

Relevant applications include manned and unmanned vehicles (UV, UAV), robotics, weather buoys, antenna positioning, platform stabilization, marine navigation, excavation machinery, and irrigation equipment and more.

Current product offering includes PNI TCM, PNI Prime and True North Revolution series.


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PNI PRIME – 3-axis digital compass module

The highest-performance 3-axis Compass module in its price range, PNI’s CompassPoint Prime provides pitch, roll and compass heading anywhere GPS is compromised or unavailable — underwater or underground, beneath bridges or inside buildings. The low-power consumption, low-cost CompassPoint Prime provides all-digital compass heading outputs accurate to 1 degree, can be calibrated to account for magnetic distortions, and offers several user-programmable parameters — including output damping, reporting units, and sampling configuration. Designed for flexibility and adaptability, it’s a perfect fit for sonobuoys, ROVs, AUVs, and cost-sensitive applications that require a full-featured 3-axis digital compass.


Key Features:

  • 2-AXIS
  • 3-AXIS
  • low power
  • Integrated processor
  • Hard and soft iron correction

PNI TCM – High performance compass modules

PNI recognizes there’s a difference between performing well in the factory and performing well in the field. The TCM’s advanced field calibration algorithms account for these differences by correcting for local magnetic distortions. Since applications may have physical constraints for doing calibration, the TCM provides four user-selectable calibration modes, as well as the ability to recalibrate the accelerometers to ensure long-term accuracy. The TCM’s measurement technology inherently ensures the module is free from offset drift and provides high measurement resolution, which is critically important at high and low latitudes where the dip angle (inclination) limits the usefulness of other compasses.

Key Features:

  • 2 -AXIS
  • 3 -AXIS
  • Low power
  • 3D orientation
  • Highest resolution
  • Highest accuracy
  • Hard and soft- iron
  • Correction
  • Integrated
  • Processor