Hi there,
The newer versions of PPT 3.x include a plugin called "Optical Heading", which you can use to correct for magnetic distortions in a room. You should make sure you have the "Intersense" plugin first, followed by "Optical Heading". You need to then attach two LEDs side by side on your HMD, with a spacing of about 20-30 centimeters. You then tell the plugin how far apart the LEDs are (use a ruler to measure the distance) and then it will take the two LEDs and combine them into one at the center, and correct distortions in your orientation sensor. The nice part about the Optical Heading plugin is that you get all the smoothness of the InterSense cube, with the accuracy of the lights, but without the jitter that is caused by a purely optical solution. So you get the best of both worlds, with no additional latency. Give it a try and see how you go. If your PPT does not include this plugin, please email
support@worldviz.com to get an updated version.
regards,
Wayne