Description
Use the Compass & Acceleration / Tilt Sensor to measure:
- Your magnetic heading
- The magnetic field strength in X, Y, and Z
- Acceleration in X, Y, and Z
- Tilt of the sensor relative to the acceleration of gravity when the sensor is not moving
When using the compass, all ferromagnetic materials must be removed from the compass’s surroundings. This includes motors, power cables, and magnetic materials like steel. This is not always possible. Calibrating the compass accounts for magnetic materials which are stationary compared to the sensor.
The compass has an accuracy of 1 degree. The accelerometer readings have accuracies of 1mg (0.0098m/s2).
The Compass & Acceleration / Tilt Sensor I2C bus address is 0x24.
I2C Registers
Address | Function |
0x00 | SensorFirmwareRevision |
0x01 | ManufacturerCode |
0x02 | SensorIDCode |
0x03 | Command |
0x04/0x05 | HeadingData (lsb/msb) |
0x06/0x07 | AccelerometerXValue(lsb/msb) |
0x08/0x09 | AccelerometerYValue(lsb/msb) |
0x0A/0x0B | AccelerometerZValue(lsb/msb) |
0x0C/0x0D | MagnetometerXValue(lsb/msb) |
0x0E/0x0F | MagnetometerYValue(lsb/msb) |
0x10/0x11 | MagnetometerZValue(lsb/msb) |
Additional information
| Weight | .0295 lbs |
|---|---|
| Dimensions | 4 × 3.75 × .7 in |
Visualize
For use with Windows computers only.
Use this simple executable to visualize your compass’s data.
- Connect your Compass & Acceleration Sensor to your Core Device Interface.
- Connect your Core Device Interface to your computer using a USB cable.
- Download the .exe (click here)
- Extract the downloaded zip folder.
- Double click on Visualize Compass Sensor.exe
The line shows the direction the sensor is pointing. The dot shows X and Y acceleration. The bar on the right shows Z acceleration. The buttons on the bottom left can be used to calibrate the accelerometer values.
