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DF ROBOT Gravity: 10DOF IMU Sensor for Motion, Heading & Altitude Changes (I2C / UART, Plug & Play)
The Gravity BMI323+BMM350+BMP581 10DOF IMU Sensor combines three Bosch sensors to provide 3-axis acceleration, 3-axis angular velocity, 3-axis magnetic field and barometric pressure data. It supports motion, heading and pressure-based altitude evaluation for indoor robots, floor or ramp change monitoring, wearable elevation logging and multi-sensor algorithm development. An onboard MCU, I2C / UART, 3.3–5 V compatibility, one integrated library and Gravity GUI reduce the work required to bring up three separate sensors. It suitable for fast Arduino, Raspberry Pi, and ESP32 prototyping.
Choose this Gravity version when the goal is to connect quickly, view data before writing application code and use one integrated DFRobot library. For compact, low-power product integration and direct access to the original BMI323 interface, choose the Fermion 10DOF version instead.
User Manual / Datasheet / Example Codes Etc.
Features
- Designed based on Bosch BMI323 6-axis IMU + BMM350 magnetometer + BMP581 barometric pressure sensor
- High-accuracy, high-stability output with built-in low noise and on-chip temperature compensation
- Built-in hardware motion algorithms including step counting, tap, tilt, free-fall, and activity recognition
- Integrated 2 KB FIFO buffer ensures high-speed data transmission
- Magnetometer employs 3rd-generation TMR technology with enhanced interference immunity
- Integrated high-precision barometric pressure sensor for pressure and altitude data acquisition
- Supports multiple operating modes including Sleep, Low Power, Normal, and High Performance – power consumption selectable on demand
- Standard I²C/UART interfaces, compatible with mainstream development boards such as Arduino, Raspberry Pi, and ESP32
- Comes with GUI visualisation software featuring built-in multi-axis attitude fusion algorithm – view data and 3D attitude without programming
Applications
- Indoor robot floor and ramp change monitoring
- Mobile robot motion, heading and pressure data collection
- Wearable floor-change and elevation logging
- Robot terrain and vertical-motion evaluation
- Multi-sensor algorithm prototyping
Specifications
- Operating Voltage: DC 3.3–5 V
- Operating Current: 3.59 mA
- Communication Interface: I²C / UART
- Connector Type: PH2.0-4P (Gravity pinout) / 2.54 mm pin header holes
- I²C Addresses: 0x4A (default), 0x4B, 0x4C, 0x4D
- Programmable Interrupt Pins: ×4
- Measurement Ranges: ±2 g, ±4 g, ±8 g, ±16 g
- PCB Size: 32 mm × 27 mm
- Gravity: High Precision 10 DOF IMU Sensor ×1
- Gravity 4P Sensor Cable ×1
- 2.54 mm Black Single Row Pin Header – 10-Pin ×1
