Adafruit
Adafruit BNO055 + BMP280 BFF Add-On for QT Py
· MPN: ADA5937
The Adafruit BNO055 + BMP280 BFF is a compact add-on board that gives any QT Py or Xiao board powerful 9-degree-of-freedom (9-DoF) motion sensing plus barome...
The Adafruit BNO055 + BMP280 BFF is a compact add-on board that gives any QT Py or Xiao board powerful 9-degree-of-freedom (9-DoF) motion sensing plus barometric pressure and altitude measurement. It mounts directly onto the back of your QT Py, creating a tiny but capable sensor package.
The BNO055 handles all sensor fusion on-chip, delivering ready-to-use orientation, acceleration, and magnetic field data over I2C without the need for complex algorithms. The BMP280 adds barometric pressure sensing with ±1 hPa accuracy, enabling altitude estimation to ±1 metre. Both sensors communicate via I2C with configurable addresses (BNO055 @ 0x28, BMP280 @ 0x77) and address-changing jumpers.
BNO055 Sensor Outputs
- Absolute Orientation (Euler) – Three-axis orientation on a 360° sphere at 100 Hz
- Absolute Orientation (Quaternion) – Four-point quaternion output at 100 Hz
- Angular Velocity – Three-axis rotation speed in rad/s at 100 Hz
- Acceleration – Three-axis acceleration (gravity + linear motion) in m/s² at 100 Hz
- Linear Acceleration – Three-axis acceleration minus gravity in m/s² at 100 Hz
- Gravity Vector – Three-axis gravitational acceleration in m/s² at 100 Hz
- Magnetic Field Strength – Three-axis sensing in µT at 20 Hz
- Temperature – Ambient temperature at 1 Hz
BMP280 Sensor Outputs
- Barometric Pressure – ±1 hPa absolute accuracy
- Altitude – ±1 metre accuracy derived from pressure
- Temperature – ±1.0°C accuracy
Key Features
- BFF Form Factor – Mounts directly on the back of any QT Py or Xiao board
- On-Chip Sensor Fusion – BNO055 processes 9-DoF data internally
- I2C Communication – Both sensors on the SDA/SCL pins
- Address Jumpers – Configurable I2C addresses for both sensors
- Optional Interrupt/Reset – Additional BNO055 control pins available
- Flexible Mounting – Solder directly or use headers for a removable sandwich
Ideal For
- Compact drone and robotics navigation
- Motion tracking with altitude sensing
- Wearable orientation and altitude projects
- Miniature weather and motion data loggers
Package Contents
- 1× Adafruit BNO055 + BMP280 BFF add-on board
- 1× Header strip for mounting
Jargon buster
Plain-language definitions for the technical terms used above.
- Address jumpers
- Address jumpers are small solder pads or links used to change a device’s bus address. They matter when you want to connect multiple identical displays to the same controller without their addresses conflicting.
- 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.
- Headers
- Rows of metal pins used to plug a module into a breadboard or connect it with jumper wires. Pre-soldered headers make the module easier to use straight away without needing to solder the pins yourself.
- 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.
- SDA/SCL
- SDA and SCL are the two signal lines used by an I2C bus: data and clock. Seeing these names helps you identify the correct connections when wiring I2C devices, even though Qwiic cables usually hide that wiring for you.
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