View Full Version : 1mm/1degree is "granularity" or accuracy?
02-17-2012, 02:50 PM
When you say the Hydra is precise down to 1 mm and 1 degree, do you mean just that the "resolution" of the numbers returned is all the way down to 1mm/degree, or do you mean that without external interference the measurements are always less than 1 unit off when compared to the actual physical position and orientation of the 'chuks relative to the base? (the distinction here is if it's just the "resolution" it could say the device is 1mm above it's previous position when it is actually 10mm above or when it is actually just a tenth of a millimeter above; that would still allow for people to claim it got precision down to the millimetre, but that would be kinda disingenuous...)
Tilt/move the controller 1mm/1degree. Draw conclusions.
Even with a heavy filter in place you will only see increases in latency not drops in tracking resolution.
02-21-2012, 04:15 PM
My room has way too many sources of bending and jitter to allow for an evaluation of how it would behave without external interference (mostly it doesn't get in the way of regular usage, but it's enough to make it just about impossible to rule out external factors)
edit: and even without the above, i don't have any ruler i trust to have perfect millimetres, and the only thing i got to measure angles is a cellphone's accelerometer, even if i could find a straight enough part on the controllers to hold the cellphone against i would still not be able to trust i'm really measuring one degree exactly.
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