Gravity: BMM150 Triple Axis Magnetometer Sensor

The BMM150 is a low-power and low-noise 3-axis geomagnetic sensor from Bosch for compass applications. It allows measurements of the magnetic field and compass angle in three perpendiculars within a measuring range of ±1300uT on X and Y axis and ±2500uT on Z axis.

Featuring a small size and light in weight, the sensor has a 2-bit DIP switch for I2C address setup with 4 addresses available.

Based on Bosch's proprietary FlipCore technology, the performance and features of BMM150 are carefully tuned and thus can offer absolute spatial orientation without calibration, perfectly matching the requirements of all 3-axis mobile applications such as robot navigation & positioning, electric compass, electric map, navigation or augmented reality.

Connection Example - FireBeetle 2 ESP32-E IoT Microcontroller

Features

• Programmable interrupt pin
• Configurable four I2C addresses
• Low noise (0.3-1.4uT)
• High accuracy (30μT horizontal geomagnetic field component, ±2.5°)

Specifications

• Power Supply: 3.3V-5V
• Operating Temperature: -40 to 85°C
• Communication: I2C
• Resolution: 0.3μT
• Zero Offset: ±40μT/±2μT (software optimized)
• Non-linearity: ＜1%FS
• Measuring Range: ±1300μT (x & y axis), ±2500μT (z-axis)
• Operating Current: 1.7mA@ frequency 10Hz
• Low Noise: 0.3-1.4μT
• Accuracy: 30μT horizontal geomagnetic field component, ±2.5°
• Start-up Time: 3ms

Resources

• Product Wiki
• Schematics
• Datasheet

Pinout

Pin	Description
VCC	DC3.3V-5V
GND	Ground
SCL	I2C Clock Line
SDA	I2C Data Line
INT	Interrupt Pin

I2C Addresses

Name	A0	A1	Address
ADDRESS_1	0	0	0X10
ADDRESS_2	0	1	0X11
ADDRESS_3	1	0	0X12
ADDRESS_4	1	1	0X13

Package Contents

• 1x Gravity: BMM150 Triple Axis Magnetometer Sensor 
• 1x Gravity-4P I2C/UART Sensor Cable 
• 1x Black Single-row Pin Header-5PIN