DFRobot
CMPS11-Tilt Compensated Magnetic Compass
The CMPS11 is a 3rd-generation tilt-compensated magnetic compass module that combines a 3-axis magnetometer, 3-axis gyroscope, and 3-axis accelerometer. An o...
The CMPS11 is a 3rd-generation tilt-compensated magnetic compass module that combines a 3-axis magnetometer, 3-axis gyroscope, and 3-axis accelerometer. An onboard Kalman filter fuses gyro and accelerometer data to remove errors caused by tilting, delivering accurate heading readings regardless of orientation.
The module outputs heading as 0–3599 (representing 0–359.9°) or 0–255, and supports raw data output from all three sensors including x, y, z magnetic field components, pitch, and roll. Communication is via I2C or serial interface.
Key Features
- Tilt Compensated – Kalman filter removes tilt-induced heading errors
- 9-DOF Sensor Fusion – 3-axis magnetometer, gyroscope, and accelerometer
- 0.1° Resolution – High-precision heading output
- Better than 2% Accuracy – After calibration
- Dual Interface – I2C (up to 100 kHz) or serial (9600/19200/38400 baud)
- 3.3V and 5V Tolerant – Works with 3.6–5V supply
- Lightweight – Just 10 g
- Compact – 24.5 × 18.5 × 4.5 mm
Ideal For
- Aircraft and drone navigation
- Balancing robots
- Indoor inertial navigation systems
- Altimeter and orientation projects
- Human-computer interaction (HCI)
Package Contents
- 1× CMPS11 Tilt Compensated Magnetic Compass module
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- Gyroscope
- A gyroscope measures rotation, such as how fast a board is turning around its X, Y, and Z axes. This matters for projects like gesture controls, balancing robots, and motion tracking where tilt or rotation changes need to be detected.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- magnetometer
- A sensor that measures magnetic fields, often used to work out compass direction. It matters because nearby magnets, motors, or metal objects can affect readings and may require calibration.
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Brands
Sensors & Input
Supplier page — dfrobot.com
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Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au
