on November 12th 57

BNO055 Orientation Sensor: Architecture, Pinout, and Datasheet

This article explores the BNO055 sensor, a remarkable advancement in sensor technology that integrates accelerometer, gyroscope, and magnetometer functionalities to provide reliable absolute orientation data. The BNO055 not only streamlines the design process by eliminating the need for multiple sensors and complex calibrations but also enhances performance in applications such as robotics and virtual reality. Its ability to consolidate various sensory inputs into comprehensive orientation information positions the BNO055 as a cutting-edge solution in our rapidly evolving technological world.

Catalog

What is the BNO055?

The BNO055 showcases ingenuity by merging multiple sensing technologies into one efficient 9-axis orientation sensor. It houses a 14-bit accelerometer, a 16-bit gyroscope, a geomagnetic sensor, and a 32-bit ARM Cortex M0+ microcontroller within a tidy System in Package (SIP). This compact arrangement simplifies design plans and bolsters resourcefulness in applications where space is priceless. The sensor achieves this through its smart 28-pin LGA assembly, with dimensions of 3.8 mm x 5.2 mm x 1.1 mm. With its minimal footprint, the BNO055 adapts effortlessly into space-conscious devices, including wearables, drones, and smartphones. By adopting such purposeful compactness, it can trim down the product's bulk and scale, catering to eager to uplift portability and user satisfaction. Internally, the BNO055 is capable of swift data fusion and dependable sensor data delivery. Its embedded microcontroller manages complex calculations autonomously, lightening the primary system processor's burden, thereby allowing more room for pursuing other imperative tasks. This independence is a great asset in applications needing accelerated data processing, assuring steady and immediate performance.

BNO055 Pin Configuration

Pin No	Name	I/O Type	Description	Function
				I2C	UART	HID-I2C
1	PIN1	-	Do not connect		DNC
2	GND	Ground	GND		GND
3	VDD	Supply	VDD		VDD
4	nBOOT_LOAD_PIN	Digital In	Bootloader mode select pin (active low)	nBOOT_LOAD_PIN
5	PS1	Digital In	Protocol select pin 1	GNDIO	VDDIO	GNDIO
6	PS0	Digital In	Protocol select pin 2	GNDIO	GNDIO	VDDIO
7	PIN7	-	Do not connect	DNC
8	PIN8	-	Do not connect	DNC
9	CAP	-	External capacitor	CAP
10	BL_IND	Digital Out	Boot loader indicator	DNC
11	nRESET	-	Reset pin (active low)	nRESET
12	PIN12	-	Do not connect	DNC
13	PIN13	-	Do not connect	DNC
14	INT	Digital Out	Interrupt output	Interrupt
15	PIN15	Ground	Connect to GNDIO	GNDIO
16	PIN16	Ground	Connect to GNDIO	GNDIO
17	COM3	Digital In	Digital interface pin 3	I2C address select	GNDIO	GNDIO
18	COM2	Digital I/O	Digital interface pin 2	GNDIO
19	COM1	Digital I/O	Digital interface pin 1	SCL	Rx	SCL
20	COM0	Digital I/O	Digital interface pin 0	SDA	Tx	SDA
21	PIN21	-	Do not connect	DNC
22	PIN22	-	Do not connect	DNC
23	PIN23	-	Do not connect	DNC
24	PIN24	-	Do not connect	DNC
25	GNDIO	Ground	GNDIO	GNDIO
26	XOUT32	Digital Out	Optional OSC port	OSC Output
27	XIN32	Digital In	Optional OSC port	OSC Input
28	VDDIO	Supply	VDDIO	VDDIO

BNO055 Architectural Design

BNO055 Technical Specifications

Type	Parameter
Factory Lead Time	18 Weeks
Package / Case	28-TFLGA Module
Number of Pins	2
Packaging	Tape & Reel (TR)
Part Status	Active
Number of Terminations	28
Terminal Form	BUTT
Number of Functions	1
Terminal Pitch	0.5mm
Output Type	I2C, UART
Supply Voltage-Min (Vsup)	1.7V
Sensor Type	Accelerometer, Gyroscope, Magnetometer, 9 Axis
Width	3.8mm
Lead Free	Lead Free
Mounting Type	Surface Mount
Surface Mount	YES
Operating Temperature	-40°C~85°C TA
Published	2015
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Terminal Position	BOTTOM
Peak Reflow Temperature (Cel)	260
Supply Voltage	2.5V
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Supply Voltage-Max (Vsup)	3.6V
Analog IC - Other Type	ANALOG CIRCUIT
Height Seated (Max)	1.18mm
RoHS Status	ROHS3 Compliant

Connection Diagram of the BNO055

Features of the BNO055

Expansive Orientation Data Insights

The BNO055 sensor is distinguished by its ability to deliver expansive orientation data, covering both quaternions and Euler angles. This facility is a conduit for precise motion tracking and control, highly relevant in fields like robotics, virtual reality, and navigation. The transformation between these two data formats requires expertise in rotations and angular measurements, broadening the spectrum of applications where precision is prioritized.

Fusion of Advanced Sensor Technologies

Featuring an assembly of advanced sensors, the BNO055 measures acceleration, rotation rate, and geomagnetic fields. This amalgamation enhances the fusion of sensor data, yielding more accurate and reliable orientation outputs. The sensor's on-chip fusion algorithms ease the processing demands generally associated with these tasks, thereby optimizing computational efficiency and extending battery life.

Miniaturized Design with Efficient Power Usage

Despite its exhaustive capabilities, the BNO055's compact size makes it well-suited for applications with limited space availability. Its intelligent power management modulates operation efficiently across power spectrums, facilitating its integration into various electronic ecosystems.

Versatile Voltage Compatibility

The BNO055's accommodation of diverse voltage levels enables its application in a wide range of settings. This adaptability is prized in scenarios with varied power sources. Many harness this feature when designing systems that require both energy efficiency and high performance, achieving a smooth integration across numerous platforms.

Applications of the BNO055

Sophisticated Navigation Frameworks

The BNO055 sensor is eagerly integrated into complex navigation frameworks, where its ability to provide accurate orientation and motion tracking ignites progress in cutting-edge settings. These capabilities are an important asset for developing systems, enhancing performance specifically in dynamic environments typical of unmanned and autonomous vehicles.

Pioneering Robotics

In robotic advancements, the BNO055 sensor plays a role in achieving precise coordination and nuanced movement. Assisting in spatial awareness and decision-making processes, the sensor supports robots undertaking ambitious tasks like object manipulation and obstacle evasion. Evidence during system development indicates that with BNO055, robots achieve more fluid and responsive actions, boosting their efficiency exponentially.

Precision Health Monitoring

Healthcare innovations exploit the BNO055 for its proficiency in capturing detailed body movement metrics. This sensor enhances wearable health devices by enabling tracking of physical activity and posture, which supports both clinical care and individual wellness. By offering consistently accurate data, these devices facilitate informed health decisions. The nuanced insights drawn from development emphasize the importance of data precision in improving proactive health management strategies.

Augmented Reality Platforms

BNO055 enriches augmented reality (AR) platforms by enabling the precise overlay of digital artifacts, offering an immersive experience. Its advanced motion tracking ensures smooth and realistic integration of virtual content, heightening engagement and interaction. Insights from sector trends emphasize the role of sensors such as BNO055 in driving AR adoption due to increased interactivity and immersion.

Comparison Between BNO055 and BNO085

The BNO055 and BNO085 are widely respected for producing detailed vector data concerning acceleration, angular velocity, and magnetic fields. These abilities support a variety of applications, from electronics to industrial systems, yet their differing features influence performance across diverse contexts. The BNO085 distinguishes itself with improvements in sensor fusion and data processing, incorporating advanced detection and optimization capabilities. These refinements render it effective in dynamic environments where swift responsiveness and precision are desired. For example, the sensor's ability to adjust to sudden changes in movement is akin to the instinctive way one might shift their weight when navigating uneven grounds. BNO085's sophisticated algorithms serve as an invaluable guide within autonomous vehicles, continuously recalibrating path selections amid fluctuating traffic conditions, demonstrating the impact a well-chosen sensor has on enhancing system efficiency in applications.

While the BNO055 is often employed in stable environments, its operation in intricate scenarios frequently requires supplementary measures or additional software to match the performance naturally provided by the BNO085. For instance, in a wearable device creating personalized exercise regimes based on movement analysis, the BNO085's precision and adaptability through reduced latency and improved feedback. Both the BNO055 and BNO085 offer considerable benefits in sensor technology. The decision between them should be guided by a thorough grasp of their unique features and the demands of the particular application.

BNO055 Manufacturer Information

Bosch Sensortec, segment of Robert Bosch GmbH, specializes in developing advanced MEMS-based sensor solutions. These sensors form the bedrock of improving smartphones, wearables, and IoT devices, enabling them to keenly sense and interact with their surroundings. Through the years, Bosch Sensortec has epitomized innovation, continually advancing the blend of sensor technology and electronics. MEMS technology began as a specialized field, yet its transformation has dramatically altered modern electronics. With Bosch Sensortec leading the charge, these developments have yielded dynamic solutions that enhance device performance. The complex construction of MEMS sensors promotes energy-efficient functionality. Bosch Sensortec showcases leadership in MEMS-based sensor innovation, with breakthroughs that reshape how devices interact with their environments. The constant effort to stretch the limits of technology highlights the prospect for sensors to occupy an increasingly central position in the digital landscape.

Datasheet PDF

BNO055 Datasheets:

BNO055 Product Flyer.pdf