Adafruit
Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055
The Adafruit BNO055 breakout delivers complete 9-DOF orientation sensing with onboard sensor fusion — no complex algorithms to write yourself. The Bosch BNO0...
The Adafruit BNO055 breakout delivers complete 9-DOF orientation sensing with onboard sensor fusion — no complex algorithms to write yourself. The Bosch BNO055 combines an accelerometer, gyroscope, and magnetometer on a single die with an ARM Cortex-M0 processor that handles all fusion calculations internally, outputting ready-to-use orientation data over I2C.
The breakout includes a 3.3V regulator, logic level shifting for I2C and reset pins, and an external 32.768 KHz crystal for optimal performance. Interrupt and address-selection pins are broken out for advanced configurations.
Sensor Outputs
- Absolute Orientation (Euler) – Three-axis orientation on a 360° sphere (100 Hz)
- Absolute Orientation (Quaternion) – Four-point quaternion for precise manipulation (100 Hz)
- Angular Velocity – Three-axis rotation speed in rad/s (100 Hz)
- Acceleration – Three-axis gravity + linear motion in m/s² (100 Hz)
- Linear Acceleration – Three-axis acceleration minus gravity in m/s² (100 Hz)
- Gravity Vector – Three-axis gravitational acceleration in m/s² (100 Hz)
- Magnetic Field Strength – Three-axis in µT (20 Hz)
- Temperature – Ambient temperature in °C (1 Hz)
Key Features
- Onboard Sensor Fusion – BNO055 handles all orientation calculations internally
- I2C Interface – 3.3V and 5V logic safe
- 3.3V Regulator – Onboard with logic level shifting
- External Crystal – 32.768 KHz for best performance
- Arduino and CircuitPython Support – Libraries available for both platforms
Also Available
- BNO055 STEMMA QT / Qwiic Version – Smaller form factor with plug-and-play I2C connectors
Ideal For
- Robotics and drone orientation
- Motion tracking and gesture detection
- VR/AR controllers
- Compass and navigation projects
Package Contents
- 1× Adafruit BNO055 9-DOF IMU Breakout (assembled and tested)
- 1× Header strip
Jargon buster
Plain-language definitions for the technical terms used above.
- 3.3V regulator
- A 3.3V regulator is a power circuit that provides a steady 3.3 volts for parts that need that supply voltage. On a breakout board, it can let the sensor run safely even when the connected microcontroller or power source uses a higher voltage.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- Gyroscope
- A gyroscope measures rotation, such as how fast a board is turning around its X, Y, and Z axes. This matters for projects like gesture controls, balancing robots, and motion tracking where tilt or rotation changes need to be detected.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IMU
- An Inertial Measurement Unit combines motion sensors to measure movement and orientation. It matters for asset tracking because it can detect movement, tilt, vibration, or changes in direction.
- magnetometer
- A sensor that measures magnetic fields, often used to work out compass direction. It matters because nearby magnets, motors, or metal objects can affect readings and may require calibration.
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Related Tutorials
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