FreeTrack Forum

A buddy of mine tossed me the 3-reflector hat clip that came with his TrackIR, since he uses the LED gadget that also came in the box.

I have been getting great results with the clip and Free-Track, so I thought I would put down the model dimension specifications that I have been using.  Seems like most TrackIR users will prefer the LEDs, so other folks may come upon an orphan hat clip too.

For any that do, here is what I use:

In the Free-Track GUI, from left to right--   [20]   [37]   [15]

Or, facing the clip, that is--
height (axis y) [20]
width (axis x) [15]  (from the central reflector to either side one)
depth (axis z) [37]

I rather doubt those values are the best of all possible, so if any other folks care to share their own findings, perhaps we can make them better for any who come later.

What units do you use? centimeters or inches. And what do you use for the light emission, which position? On the webcam?

What units do you use? centimeters or inches. And what do you use for the light emission, which position? On the webcam?

I believe the values are only compared against each other, so units of measurement are removed from consideration.

I use a webcam with built-in IR LEDs (marketed for low-light use).

An additional tweak I've since made to the TrackIR reflector clip was to take some opaque tape and mask much of the reflector surface.  This results in smaller points for Free-Track to follow and gives smoother tracking.

After doing this, I further "refined" the values I use for Free-Track's model dimension.  Your milage may vary here, since these values now are the distances between points exposed on the reflector surfaces by selective masking--but the points are centered on each reflector and other clips' reflectors' centers should be quite similar.

Now I use:

In the Free-Track GUI, from left to right--   [188]   [400]   [300]