The 7Semi BMM150 is a high-performance digital geomagnetic sensor based on Bosch's BMM150 IC. Designed for precise 3-axis magnetic field sensing, this ultra-compact breakout board supports both I2C and SPI interfaces and is perfect for embedded orientation detection, electronic compassing, and wearable devices. The module includes onboard level shifting and power regulation, making it compatible with 3.3V and 5V systems.
Features
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3-axis digital geomagnetic sensor
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Based on Bosch BMM150
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Ultra-small, low-profile PCB for easy integration
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Dual interface support: I2C and SPI
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Onboard level shifters for 3.3V/5V logic compatibility
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High accuracy magnetic field detection
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Suitable for low-power wearable and mobile applications
Applications
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Electronic compass and tilt-compensated heading
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Augmented reality (AR) orientation
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Indoor navigation and localization
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Wearable health and fitness devices
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Motion tracking in robotics and drones
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Gaming controllers and 3D input devices
What is Included?
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1 x 7Semi BMM150 Digital Magnetometer Sensor Board
Frequently Asked Questions (FAQs)
Q1: Can I use this with Arduino or Raspberry Pi?
A: Yes, the BMM150 breakout board works with both. Libraries are available for Arduino, and it can be used with Raspberry Pi via I2C or SPI.
Q2: What is the default communication mode?
A: The board is set to I2C mode by default. You can switch to SPI by adjusting the PS pin.
Q3: Is it Qwiic compatible?
A: No, it not supports Qwiic connectivity for easy integration into modular embedded systems.
Q4: What’s the maximum I2C clock speed supported?
A: The I2C interface supports up to 1 MHz fast mode operation.
Q5: Can it be used to calculate compass heading?
A: Yes, with proper calibration, the BMM150 can provide heading data for use in digital compass applications.
Resources
- Sensor IC:
- Bosch BMM150
- Interface:
- I2C / SPI
- Operating Voltage:
- 3.3V / 5V (regulated onboard)
- Magnetic Field Range:
- ±1300 µT (X and Y axes), ±2500 µT (Z axis)
- Sensitivity:
- 0.3 µT
- Power Consumption:
- ~170 µA typical
- Operating Temperature:
- -40°C to +85°C
- Board Dimensions:
- Approx. 25mm x 10mm
- Board Weight:
- 2g
