Arduino Headtracker

Overview

This is a headtracker that uses an Arduino Micro and a BNO-055 9-axis INU sensor. The goal is to read the values from the sensor and send them in useful form over the serial connection. On the PC, OpenTrack can receive this data with the Hatire plugin. The software tries to compute an exponentially decaying mean of the gyroscope readings in order to automatically re-center if the head position is only slightly off and also to automatically remove gyroscope drift. In my OpenTrack configuration I'm sending a 'C' character on start. This will centre the gyroscope readings in the Arduino. I then have a keybind in OpenTrack to restart the tracking. This allows to re-centre in a neutral head position. Re-centre and drift correction is done on the Arduino, so OpenTrack should always receive 0 degrees as the neutral position.

Required Arduino Libraries

• Adafruit BNO-055

Required PC Software

• OpenTrack