Unit BMM350
SKU:U231
Description
Unit BMM350 is a three-axis magnetometer unit featuring the BMM350 sensor and supporting 100 kHz and 400 kHz communication rates. Based on TMR (tunnel magnetoresistance) technology, it measures magnetic fields along the X/Y/Z axes with approximately 0.1 μT resolution and excellent temperature stability. The module transmits data over I2C, provides real-time three-axis geomagnetic data, and supports heading detection after calibration, making it suitable for robot navigation, heading detection, electronic compass, motion tracking, and magnetic field sensing.
Features
- BMM350 three-axis TMR magnetometer
- Measurement axes: X / Y / Z
- Magnetic field resolution: approx. 0.1 μT
- Magnetic field range: ±2000 μT (typical)
- Magnetic sensing technology: TMR (tunnel magnetoresistance)
- Communication rate: 100 kHz / 400 kHz
- Supports heading readout and calibration
Includes
- 1 x Unit BMM350
- 1 x HY2.0-4P Grove Cable (5cm)
Applications
- Robot navigation
- Heading detection
- Electronic compass
- Motion tracking
- Magnetic field sensing
Specifications
| Specification | Parameter |
|---|---|
| IC Model | BMM350 |
| Sensor Type | Three-axis magnetometer |
| Magnetic Field Range | X/Y/Z axes: ±2000 μT (typical on each axis) |
| Magnetic Field Resolution | approx. 0.1 μT |
| Communication Interface | I2C @ 0x14 |
| I2C Communication Rate | 100 kHz / 400 kHz |
| Sleep Current | 6.42 μA (measured) |
| Continuous Read Current | 167.02 μA (measured) |
| Heading Accuracy | Error < 10° after calibration |
| Operating Temperature Range | -40 ~ 85°C (chip specification) |
| Product Size | 24.0 x 24.0 x 8.0mm |
| Product Weight | 3.1g |
| Package Size | 138.0 x 93.0 x 7.0mm |
| Gross Weight | 6.6g |
Schematics
1/1
PinMap
Unit BMM350
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
Datasheets
Model Size
Structure
Softwares
Arduino
UiFlow2
Video
Product Comparison
| Product Comparison | Unit DoF6  | Unit DoF9  | Unit DoF10  | Unit BMM350 |
|---|---|---|---|---|
| Sensor Combination | BMI270 | BMI270 + BMM350 | BMI270 + BMM350 + SPA06-003 | BMM350 |
| Sensor Type | Six-axis inertial sensor | Six-axis inertial + three-axis geomagnetic sensor | Six-axis inertial + three-axis geomagnetic + barometric pressure sensor | Three-axis geomagnetic sensor |
| Accelerometer | 16-bit 3-axis | 16-bit 3-axis | 16-bit 3-axis | ❌ |
| Gyroscope | 16-bit 3-axis | 16-bit 3-axis | 16-bit 3-axis | ❌ |
| Magnetometer | ❌ | BMM350 (TMR, approx. 0.1 μT) | BMM350 (TMR, approx. 0.1 μT) | BMM350 (TMR, approx. 0.1 μT) |
| Barometric Pressure Sensor | ❌ | ❌ | SPA06-003 | ❌ |
| I2C Address | 0x68 / 0x69 (onboard switch) | BMI270: 0x68 / 0x69 (onboard switch) BMM350: 0x14 | BMI270: 0x68 / 0x69 (onboard switch) BMM350: 0x14 SPA06-003: 0x76 | 0x14 |
| Main Functions | Acceleration, angular velocity, and temperature acquisition; on-chip motion detection | Acceleration, angular velocity, temperature, and three-axis magnetic field acquisition; on-chip motion detection | Acceleration, angular velocity, temperature, three-axis magnetic field, and pressure acquisition; on-chip motion detection | Three-axis magnetic field acquisition; heading output after calibration |
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