Arduino Tracker

Plugin for OSVR that uses an Arduino + MPU6050 to do rotational headtracking.

• Arduino code is based off of Jeffs MPU6050 DMP6 example script
• Plugin uses Wills C++ serial library

How to use

1. Open Arduino_Tracker_Sketch in the Arduino IDE, and upload it to your board.
   • Open the serial monitor and set the baudrate to 115200 and if you see something like this, it worked:
2. Place the dll into your osvr-plugins-0 folder.
3. Add the following to your osvr_server_config file, substituting "com4" with the com port your arduino is connected to:

   "drivers": [{
       "plugin": "inf_osvr_arduino",
       "driver": "ArduinoTracker",
       "params": {
           "port":"com4"
       }
   }],
   ...
   "aliases": {
       "/me/head": "/inf_osvr_arduino/ArduinoTracker/semantic/arduino"
   }

4. Run the calibration procedure the first time you use the plugin with the key combo CTRL + SHIFT + I. See notes below for more info...
5. Place your headset in the "Forward" direction and press the key combo CTRL + SHIFT + O to reset this position to 0 (looking directly forward on the Z axis)

notes

• The X axis of your MPU should be pointing toward the left, and y axis pointing toward you and be mounted on the front of your headset for the axes to align.
• Use the key combo CTRL + SHIFT + I from anywhere to begin the calibration procedure.
  • Calibration will sometimes hang. Simply reconnect the arduino to reset and try again (plugin will auto-reconnect to arduino).
  • You will need to run calibration the first time you use the plugin. The calibration procedure saves the offsets to eeprom so you should only need to run it once.
• Use the key combo CTRL + SHIFT + O from anywhere to reset your current rotation to 0 (looking directly forward on the Z axis).
  • Because the MPU6050 doesn't have a magnetometer, you may need to reset the rotation occasionally as it has a tendency to drift over time.