FreePIE IMU stops working (Nexus 4)

[isaac]

I've started using the FreePIE IMU android app on my nexus 4 along with opentrack for headtracking in Elite. It works great, until it stops working.

I have wake lock running at partial lock to keep the CPU running. After a random amount of time - ten minutes or so - the head tracking in game stops responding. If I go back to the app it says 'on' but if I hit the on button android says the app has stopped responding and needs to be closed.

Anyone seen this or know how I could debug it or any alternatives? I saw there's a 'wireless IMU' app but that didn't seem to work with opentrack.

[CyberVillain]

We are working on a new version so stay tuned


https://github.com/AndersMalmgren/FreePIE/pull/45

[isaac]

Thanks for the response. Does the fact you sent a link to a git pull suggest there's an early version to test?

I'd be happy to try and early version. The only alternative I have at the moment is using an EDTracker, but it suffers from terrible drift that seems to vary with temperature, so I can't even set up a bias for it.

BTW does FreePIE IMU combine the magnetic field data with the gyro data to combat sensor drift?

[isaac]

Ah just seen a link to on back on this forum with a verison to try, I'll give it a go.

[isaac]

Tried the new version last night and it was brilliant, thanks.

[CyberVillain]

Cool, it will be released pretty soon