Search found 5 matches

by harmslijper
Wed Aug 05, 2009 12:46 am
Forum: Developer's Forum for Windows
Topic: characteristics of hardware: testing linearity of the sensor
Replies: 5
Views: 16076

Hi Jwick,

Interesting, I just ordered two more spacenavs so I can take one apart. Any suggestions with regard how to disassemble one, without destroying it.

When I calculate the calibration curves, shall I email them to you? what is your email address?

cheers,

harm
by harmslijper
Mon Aug 03, 2009 6:42 am
Forum: Developer's Forum for Windows
Topic: characteristics of hardware: testing linearity of the sensor
Replies: 5
Views: 16076

Hi Jwick, Oke, springs, but the springs must have characteristics, that cause some change in voltage, which is translated into a signal send to the computer. So if I rephrase my question, what are the characteristics of the springs and how is thedeformation of the spring translated into the signal t...
by harmslijper
Mon Aug 03, 2009 2:00 am
Forum: Developer's Forum for Windows
Topic: characteristics of hardware: testing linearity of the sensor
Replies: 5
Views: 16076

characteristics of hardware: testing linearity of the sensor

Hello Everyone, I want to test the the linearity of of the SpaceNav. For Fz translation I am going to place different weights on the sensor en see whether the linearity is good and/or whether there is strong hysteresis. For the other directions and rotations it's going to be much more difficult to t...
by harmslijper
Tue Jun 16, 2009 3:10 am
Forum: Developer's Forum for Windows
Topic: computation of Rotation Angles
Replies: 2
Views: 11430

computation of Rotation Angles

Hi Everyone, I am using Matlab to read-out the space navigator. Translation data that comes out is easy to understand. However, rotations are not clear to me: x,y,z values range between 1 and -1 and rotating around any axis just a little gives these extreme values. So what do these values mean, sinc...
by harmslijper
Thu May 28, 2009 6:54 am
Forum: Developer's Forum for Windows
Topic: Using spacenavigator as device for measuring hand dexterity
Replies: 1
Views: 6306

Using spacenavigator as device for measuring hand dexterity

Hi Everyone, At the interdepartmental group of Hand Surgery and Rehabilitation at the Erasmus MC (Rotterdam) we are currently in the process of developing a hand dexterity test for use in rehabilitation. We think the space navigator (SN) could potentially be used as a device to perform such a test. ...