tjrantal / xbimusample Goto Github PK
View Code? Open in Web Editor NEWA project to sample xBIMU over bluetooth in windows. The data is visualized using jogl.
A project to sample xBIMU over bluetooth in windows. The data is visualized using jogl.
Java program to capture x-BIMU data. It is assumed that the x-BIMU is configured to send sensor data at 256 Hz, no quaternion data, and battery data at 1 Hz. Magnetometer calibration varies between units, and I've hardcoded the calibrations for the three x-BIMUs I have. The orientation based on MARG data will therefore almost certainly be out of whack for other x-BIMUs. Uses jssc to connect the bluetooth, source included. Uses jogl (http://jogamp.org/jogl/www/) which depends on gluegen. Create a folder jarLib, and copy .jars to that folder (I downloaded jogamp-all-platforms.7z from http://jogamp.org/deployment/jogamp-current/archive/ and copied jars from jogamp-all-platforms/jar) Uses a port of Seb Madgwick's gradient descent algorithm ported from the C code (http://www.x-io.co.uk/open-source-imu-and-ahrs-algorithms/) to estimate the IMU orientation The Quaternion.java was copied from http://introcs.cs.princeton.edu/java/32class/Quaternion.java.html, and subsequently modified Compile (look into build.xml, if the ant build script does not work): ant Use: Pair x-BIMU with bluetooth (whichever way it is done in your operating system, the code only works in Windows as is) take a note of the com port. Select the com port from the drop down menu -> Connect Bluetooth, the program should start showing real-time data. Once connected, it is possible to save the data to file -> Begin sampling. Look into deakin/timo/capture/CaptureXBIMU.java for the file format.
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