Sensor Modules


Freespace Sensor Modules (FSMs) are high performance, low power inertial measurement units (IMUs) / attitude heading reference systems (AHRS) offering ultra-high performance motion control with low latency. They integrate the latest MEMS inertial sensor technology with MotionEngine software and a microprocessor to enable instant motion control functionality in a wide range of products. The modules are ultra-compact, high performance and pre-calibrated to enable the rapid development of motion controlled products. 

Choose the Freespace Sensor Module that is right for you:

FSM-9 with cable sq
 FSM-9 Sensor Module                     BNO070 Sensor Module


  • Overview
  • Applications
  • Learn More

Advanced Motion Performance: industry leading sensor qualification, factory calibration and sensor fusion provide the most accurate motion tracking, suitable for consumer, industrial, robotic, aerospace, and other applications.

Turnkey Solution with API: integrated hardware and software, as well as a well-documented API, enable straightforward system integration and rapid product prototyping and development.

Small Footprint: ultra-compact size enables flexible design of OEM products with the lowest possible bill-of-materials (BOM) cost.

Mass Production Ready: Hillcrest’s sensor qualification system, advanced motion knowledge and mass-market technology experience ensure our modules and your products are mass production ready.

Head Mounted Displays

The most precise and stable motion control meets the exacting requirements of military-grade Head Mounted Displays (HMDs). Proprietary technology ensures smooth, responsive motion control for military, law enforcement, emergency services and others.

Virtual Reality

Freespace Sensor Modules bring unprecedented motion realism to military training, industrial development and immersive gaming applications. Responsive, accurate and smooth motion ensures the most immersive and believable experiences in virtual worlds, whether integrated in head mounted displays (HMDs) or as stand alone motion control units.

Vehicle Dynamics

Freespace Sensor Modules can accurately track vehicle usage, braking, acceleration, lane changes, cornering and swerving for both personal and professional drivers. Crash recording applications can utilize FSM products as a ‘black box’ providing vital data to fleet managers, insurance providers, vehicle manufacturers and law enforcement officials.

Industrial Monitoring

Hillcrest’s precision motion tracking and dynamic calibration are ideally suited to industrial monitoring applications. The motion trending performance of mechanical equipment can easily be monitored to determine maintenance needs well ahead of failure. Advanced power saving features allow for applications where power is difficult to obtain. Dynamic temperature calibration ensures accurate monitoring in mobile, as well as stationary equipment.

Home Medical Monitoring

Compact size, advanced power saving features, and accurate motion tracking makes FSM products ideal for wearable medical monitors, providing simple interfaces for fall detection, orientation, activity, and sleep cycle tracking. Orientation compensation allows for proper monitoring whether the device is worn around the neck or kept in a pocket. ‘Is-worn’ detection lets caregivers know when the device is not in use.

Sports & Fitness

Precise motion tracking provides previously unobtainable insight into athletic and fitness activity and performance. While in the gym, form and repetition count can be precisely monitored, and the patented tremor detection algorithms can track muscle fatigue. Dynamic calibration means the athlete never has to stop training to reset the device.


With robots reliant on sensors to perceive the world around them, accurate 3-D motion detection is a critical component of practical robotic context awareness. FSM products overcome common motion sensor deficiencies to provide the most accurate and reliable multi-axial motion detection to maintain stability and attitude in advanced robotics.

To learn more about our FSM modules, please click on the FSM-9 below:

FSM-9 with cable sq
FSM-9 (9-Axis) Modules