Augmented Reality Compass.
Panoramic Compass.
Show planets positions
also show towns around your GPS position without internetconnection.
Please leave comments for improvements.
This compass uses the magnetometer, gyroscope(if available) and theaccelerometer. it’s a full featured IMU (9DOF), with highlyefficient stabilization algorithm.
Tested on “Nexus S”,”Galaxy S2″ and “HTC Sensation 4G”.
Slide the screen to zoom.
- Don’t forget to calibrate(*) your compass, if you see themagnet.
To acheive this, you must rotate your phone (at least 180A° in alldirections)
if the magnet continues,
- Stand back from iron objects.
- Remove your magnetic case.
if the magnet persist:
- Unplug or replug the device (the cable also emit magnetism)
- Restart (!) Device. (curious Android feature)
(*) : there is no bad magnetometers (magnetic north sensor), onlybad calibrations. And sometimes ill-algorithms “separation”. Theproblem with these sensors is that the phone itself sends a strongmagnetism. Sometimes even the act of playing a sound, recharge oractivate the camera disrupts this sensor.
To separate the constant magnetic device to that of the earth, wemust make him make important rotations in all directions.
4d compass contains an algorithm for error detection. It indicatesa problem by drawing a big red magnet.
4d compass also contains its own separation algorithm, applied ontop of that made by Android.