User's Manual

InterSense Doc. No. 072-00105-0I07 Rev. 4.2
IS-900 User Guide Page 70 of 177
Data Item 22 – Buttons.
One 3-digit integer in ASCII format or one byte in binary format.
Bits represent the button states of a station’s buttons. If a button
is pressed, the corresponding bit is 1 otherwise it is 0. The bit
assignments for the wand are (where bit 0 is the least significant
bit):
Bit
Button
MicroTrax Wand button
0
1
1 on wand image
1
2
2 on wand image
2
3
3 on wand image
3
4
4 on wand image
4
5
center (press joystick)
5
6
trigger
Data Item 23 – Joystick.
Two integers, one for each axis, values ranging from 0 to 255.
Two 3-digit integers in ASCII format or two 1-byte unsigned
values in binary format. Values at limits and at center are:
Axis
Position
Value
left/right (1
st
integer)
left
0
center
127
right
255
front/rear (2
nd
integer)
rear
0
center
127
front
255
Define Tip Offsets N{stationNum},[Ox, Oy, Oz]<>
By default, the point being tracked is for each station is:
Wand Station: Tip.
Head Tracker Station: Intersection of front surface, bottom
surface and at mid length, see image to the left.
Hand Tracker Station: center top, in dent.
This command allows the user to define a set of position
offsets, so a different point can be tracked. Offsets are
measured in the body coordinate frame of the MicroTrax
station and are entered in centimeters. If optional
parameters are omitted, current settings are returned.
Default 0,0,0
Tip Offset: intersection of
front surface and bottom
surface and at mid
length.