The BNO080 / 085 is a 9-axis System-in-Package (SiP) for rapid development of sensor-enabled Augmented Reality (AR), Virtual Reality (VR), robotics and IoT devices. Co-developed by Bosch and Hillcrest Labs, it features high-performance accelerometers, magnetometers, and gyroscopes in a small package with a low-power 32-bit ARM Cortex M0 + MCU. Pre-integrated with Hillcrest’s Freespace® Sensor Hub software, the BNO080 / 085 delivers superior 9-axis and 6-axis motion tracking. enabling exciting sensor applications in a variety of consumer and IoT products.
The BNO080 / 085 offers application-specific configuration, functionality and performance in a small turnkey assembly, benefiting OEMs by reducing time-to-market, development time and BOM costs, as well as delivering the highest accuracy and quality.
The VR IMU utilizes the impressive BNO080 IMU. this IC features a 3-axis accelerometer/gyroscope/magnetometer combination running powerful algorithms with the ARM Cortex M0 +. The BNO080 Inertial Measurement Unit (IMU) generates accurate rotation vector headings, perfect for VR and other heading applications, with a static rotation error of 2 degrees or less. This is what we’ve been waiting for: all the sensor data is combined and drift-corrected into meaningful, accurate IMU information.
The IC is intended to be implemented in Android-based phones to handle all the calculations required for virtual reality goggles using only your phone. The sensors are very powerful and power complex. An I2C based library is provided which provides rotation vectors (which most people want to read from the IMU) as well as acceleration, gyroscope and magnetometer readings, step counts, activity classifiers (e.g. cycling) and calibration.
VR IMU has created a demo processing application to see how IMU’s motion can accurately manipulate 3D objects using IMU’s quaternion output.
If I2C is not your first communication choice, the sensor is also capable of communicating via SPI and UART! If you are using a UART, we recommend Serial Basic for easy connectivity.
This version utilizes an on-board 32kHz crystal for increased precision and more accurate time stamping.
Features
Interfaces.
The BNO080 can communicate through a variety of interfaces. The Qwiic VR IMU has two jumpers that allow the user to select their interface of choice.
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I2C (Default): Up to 400kHz
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SPI: Up to 3MHz
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UART: 3Mbps
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UART-RVC (Robot Vacuum Cleaners): 115200kbps
Performance Characteristics.
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Rotation Vector
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Dynamic Error: 3.5°
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Static Error: 2.0°
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Gaming Rotation Vector
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Dynamic Error: 2.5°
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Static Error: 1.5°
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Heading Drift: 0.5° / min
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Geomagnetic Rotation Vector
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Dynamic Rotation Error: 4.5°
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Static Rotation Error: 3.0°
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Gravity Angle Error: 1.5°
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Linear Acceleration Accuracy: 0.35m/s2
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Accelerometer Accuracy: 0.3m/s2
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Gyroscope Accuracy: 3.1° / sec
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Magnetometer Accuracy: 1.4μT
Hillcrest Labs, a subsidiary of InterDigital Corporation and a world-renowned provider of motion control software and hardware, today announced its newest sensor chip, the BNO085, in a 9-axis System-in-Package (SiP) with an enhanced sensor fusion algorithm specifically designed for Virtual Reality ( VR ), Augmented Reality (AR) and 3D audio applications. VR systems using the BNO085 benefit from a sense of picture stabilization due to more precise alignment between the control stick and the headset, even if the control stick is not in the field of view of the system camera.
The BNO085 inherits all the same features of its predecessor, the BNO080. The latter is now widely used in VR, AR, 3D audio, robotics and IoT devices. It packages Hillcrest Labs’ high-performance, proprietary MotionEngine™ sensor processing software combined with accelerometers, magnetometers, gyroscopes, and low-power 32-bit ARM Cortex M0+ MCUs in a single package.The BNO085 offers unique sensor fusion, motion tracking, and exclusive application functionality to support a range of application sensors for consumer and industrial products.The BNO085’s latest design is intended to provide accurate motion tracking for VR control handles in both internal and external systems for VR, AR and 3D audio headsets.
Improvements to the BNO085 designed for VR systems include.
-Improved dynamic tracking through internal and external camera system improvements; -Significantly reduced latency errors, allowing the VR joystick to be used in both internal and external systems.
-Significantly reduced latency errors to align the joystick with the screen frequency of the headset.
-Tight synchronization between the operating effects of the two joysticks in a dual joystick system.
-Sensors track the rotational motion of one or more handles even outside the camera’s field of view, providing a smooth and directional output.
Compared to its predecessor, the BNO085 is characterized by low power consumption and compact size, while offering low latency, 1KHz sampling rate, smooth directional output, and accurate motion tracking. Developers and system integrators benefit from faster time-to-market, reduced development time, reduced BOM costs, and the highest accuracy and product quality. Two well-known brands in the VR space, 3Glasses and ANTVR, have already used Hillcrest Labs’ BNO085 sensor module to provide their customers with a better VR experience.
