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DF ROBOT Fermion: Compact 9DOF IMU Sensor for Motion & Heading Integration (24×19 mm, I2C, Breakout)
The Fermion BMI323+BMM350 Low-Power 9DOF IMU Sensor combines a Bosch BMI323 accelerometer and gyroscope with a Bosch BMM350 magnetometer for compact, heading-aware motion sensing. It provides acceleration, angular velocity and magnetic field data for embedded robots, wearable devices, electronic compass prototypes and sensor evaluation. High-rate motion sampling, magnetometer output rates up to 400 Hz and a 0.37 mA low-power mode support performance and power optimization in integrated products. Arduino library support simplifies evaluation with Arduino-compatible boards, including ESP32.
Choose Fermion for compact product integration and direct access to the individual sensors. Choose the Gravity 9DOF version when the project needs I2C/UART, wider voltage compatibility, one integrated library, easier wiring or GUI visualization.
User Manual / Datasheet / Example Codes Etc.
Features
- Designed based on Bosch BMI323 6-axis IMU + BMM350 3-axis magnetometer for 9-axis sensing
- High-accuracy, high-stability output with built-in low-noise architecture and on-chip temperature compensation
- Built-in hardware motion algorithms including step counting, tap detection, tilt sensing, free-fall, and activity recognition
- Integrated 2048-byte FIFO buffer ensures high-speed data transmission without loss
- Magnetometer employs 3rd-generation TMR technology with enhanced interference immunity and fast recovery
- Supports multiple operating modes including Sleep, Low Power, Normal, and High Performance – Low Power mode consumes only 0.37 mA
- Onboard I²C interface supports both soldered and plug-in connection methods for flexible integration
- Compatible with mainstream development boards including Arduino, Raspberry Pi, and ESP32 with complete development libraries
Specifications
- Operating Voltage: 3.3 V
- Operating Current: 0.92 mA
- Low Power Current: 0.37 mA
- Communication Interface: I²C
- Connector Type: SH1.0-5P connector / 2.54 mm pin header holes
- I²C Addresses:
- BMI323: 0x69 (default), 0x68
- BMM350: 0x15 (default), 0x14
- Programmable Interrupt Pins: ×3
- Accelerometer Measurement Ranges: ±2 g, ±4 g, ±8 g, ±16 g
- PCB Size: 24 mm × 19 mm
- Mounting Hole Spacing: 19 mm
- Mounting Hole Diameter: 2 mm
Applications
- Electronic compass prototypes
- Mobile robot direction feedback
- Handheld orientation controllers
- Wearable heading and movement devices
Package Includes
- Fermion: BMI323+BMM350 High Precision 9 DOF IMU Sensor ×1
- SH1.0-5P Sensor Cable ×1
- 2.54 mm Black Single Row Pin Header – 10-Pin ×1
