Example Code for Raspberry Pi-get geomagnetic data and compass angle

Hardware Preparation

• Raspberry Pi 4 Model B-2GB (or similar) x 1
• BMM150 Triple Axis Magnetometer Sensor x1
• Dupont Wires

Software Preparation

• BMM150 Sensor Python Library
• RASPBIAN Official OS

Wiring Diagram

Connect the module with Raspberry Pi as shown below. Default address: 0x13.

Other Preparation Work

1. Enable Raspberry Pi I2C (follow steps in previous example).
2. Install dependencies (follow steps in previous example).
3. Download the library (follow steps in previous example).
4. Navigate to the sample code directory:
   • cd DFRobot_BMM150/python/raspberrypi/examples/get_geomagnetic_data

Sample Code

Open the terminal and enter the following commands to run the sample code:

cd DFRobot_BMM150/python/raspberrypi/examples 
cd get_geomagnetic_data
python get_geomagnetic_data.py

Result