rotation is off

[MoreDread]

so after experimenting with a few games i came across some problems.
i noticed that the cursor would not move at a constant speed.. in some spots it got slower and i had to move my arm more to make up for it.
i was also getting gesture spams, constant knifing or reloading even after making sure that the axis of the controllers and the base line up properly.

i then saw the sixense_simple3d app and ran it to see whats going on there.

it seems that even while sitting on the base, the rotation is off by up to 40° (tho its rarely that much)
instead of pointing straight forward the two 3d objects intersect and form an X.

when holding the controlers next to each other and pointing them forward they point in a slightly different direction, usually about 10° off.
if i move them from left to right without rotating them at all, the rotation changes quite a bit, not randomly tho.. the direction depends on where exactly it is, and it changes gradually.

this seems to indicate a slight bending in the magnetic field, but i couldn't make out any sources of interference.
it currently sits in the center of my desk with at least 10 inches of space in all directions.
moving it around doesn't change it. no matter if i put it on my bed, my chair, the floor or any other place on my desk... the result seems to be the same.

i tried turning off unneeded devices 1 by one and it didn't change at all.

this is odd because the position seems to be tracked perfectly, theres no jitter as well.

[Jeff]

The 'forward' vector (the objects you see in simple3d) points out the front of the triggers like the barrel on a gun. Therefore, when the controllers are in the dock, the 'forward' vectors are pointing downwards by about 40 deg. Because of this it is easy to rotate the controllers in the dock a bit and see the vectors turn from pointing away to making an X like you mention.

That being said, the current Hydra drivers do have a bit of variance in the tracking space, and the variance you see between the two controllers is likely due to this. We're continuing to tune the system and that type of performance should only get better.

Large pieces of metal can cause variance in the tracking as well, but it sounds like you've already played around with that and it doesn't sound like that is what you are seeing.