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Wolverine #211 31/10/2013 - 08h24

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Thank you!
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oldsu #212 03/11/2013 - 19h54

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Hi.
My first approach to freetrack :D

http://www.youtube.com/watch?v=LhwsG_WKWeI
Edited by oldsu on 03/11/2013 at 20h14.
Jefiepsen #213 24/11/2013 - 21h45

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My third clip.

First one was made of a bottle screw cap and pen pipes with wires going through them to the leds on the tips. The source was an usb cable (that broke a lot of times).

Later I did another one. Instead of pen pipes I used a hard wire, that helped connecting the leds, powered by a cellphone battery. It had too much weight, not comfortable to use, headset moving when I move.

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Now its time for a reflexive one :D
Made of laser cut 5mm transparent acrylic with circles covered with that reflexive ribbon used on uniforms, bags, etc.

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Webcam uses 3mm black acrylic, where I placed 10 IR leds powered by the 5V from the cam's usb cable. I used a switch to turn it on and off and a green led to indicate state, as human eye can't see the leds.

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Here in Brazil we call this "gambiarra" :D

Worked very well, almost no weight on the headset, no wires, no battery discharge, no problems :)

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Good gaming!
Jefiepsen #214 24/11/2013 - 21h47

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Sorry for the images out of size, I couldn't fix it :(
Mpk #215 29/12/2013 - 19h18

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Hello,

I was fooling around thinking of building my own tracking system using the before mentioned methods. But because I only needed this for car simulation game, i.e. mainly X and Y axis, I gave a try to my led headlamp and Voila! it was working perfectly!

If someone finds himself/herself in the same situation, here is my set up:
Camera: A4 Tech P-35N (as is, no lens removed)
Headlamp: Petzl

Regards,
Martin.
palladin82 #216 13/01/2014 - 08h07

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Registered on : 07/05/2009

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Hi all,

I have already built three different FT devices,

First-one - supllied with OSRAM IR Leds with 160 Degrees was working quite fine like on attached movie.

http://www.youtube.com/watch?v=LzY8Aa2lt9I

The problem was that it was powered by baterries and they did not last for long.....


Second device I have built was powered by USB 5v and OSRAM LEDs again:

http://www.youtube.com/watch?v=ORi-g9bF_as

and

http://www.youtube.com/watch?v=YcLbW8oCApM

It was running very well. Than I had an request from my friend to build one for him. The problem was that these Osram leds are very hard to buy in my country so I have to order them from abroad.

Some time ago I have looked on very interesting article regarding Freetrack IR Light Diffusers which look like
http://www.free-track.net/images/point_model_gallery/benmeijer_21.jpg

I have ordered a fimo clay and make the diffusers from half translucent white clay.

Effect is amazing (with Osram Leds) angle is almost 360 degrees !!!

Two days ago I have bought standard IR leds with no more than 25 degrees half angle and after flatting the Ir led heads (folowwed by simmilar shape of Osram Leds)  I have combined it to another set powered with USB power and fimo clay diffusers - guess what - the effect is almost the same - almost 360 degrees of angle !!!! (only limited when led is pointed exactlly in opposite direction or is covered by chasis of FT device.)

It just shows that diffusors are solving all tracking issues and narrow IR Leds issues. If You have a problem with above issues try fimo clay diffusers !!!!

I will post some pictures with the last build really soon.

Best Regards

Greg
palladin82 #217 16/02/2014 - 10h55

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Hello Again,

My freetrack device is finally finished and for sale now.

Chasis : Geniune Carbonfiber 200 on bothside
IR Leds : 3 x Osram  SFH485P
Cam : PS3 Eye Modified - ready to use
Additionally : 3 x 15mm FIMO Translucent IR Diffusers (gives almost 360 degrees tracking)
Clip - Adjustible clip for headphones mounting

For pictures please look at https://www.facebook.com/media/set/?set=a.10203007640373988.1073741841.1293979273&type=1&l=2fdb470a72

Some movies from testing :
http://www.youtube.com/watch?v=ORi-g9bF_as

http://www.youtube.com/watch?v=YcLbW8oCApM

For more info please contact me at palladin82@gmail.com


Cheers
Greg
benmeijer #218 24/02/2014 - 20h59

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palladin82 @ 13/01/2014 - 09h07 a dit:

Hi all,

....
Some time ago I have looked on very interesting article regarding Freetrack IR Light Diffusers which look like
http://www.free-track.net/images/point_model_gallery/benmeijer_21.jpg

I have ordered a fimo clay and make the diffusers from half translucent white clay.

Effect is amazing (with Osram Leds) angle is almost 360 degrees !!!

Two days ago I have bought standard IR leds with no more than 25 degrees half angle and after flatting the Ir led heads (folowwed by simmilar shape of Osram Leds)  I have combined it to another set powered with USB power and fimo clay diffusers - guess what - the effect is almost the same - almost 360 degrees of angle !!!! (only limited when led is pointed exactlly in opposite direction or is covered by chasis of FT device.)

It just shows that diffusors are solving all tracking issues and narrow IR Leds issues. If You have a problem with above issues try fimo clay diffusers !!!!

....



I'm glad that you are enthousiast about the Fimo clay diffusors.

Here's the link to my topic (from 2010)  Click

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palladin82 #219 24/02/2014 - 21h50

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Hi,

I found a link to Your topic and I decided to try.

They work great not only to extend an viewing angle but also to get rid of some light distortion and unwanted reflections.

Your idea with FIMO was brilliant :) Congrats and thanks :)
moss #220 23/03/2014 - 20h59

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As promissed a long time ago; the pictures of my finished tracking device mounted on the headphones with a custom scheme paint. Works like charm.
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Regards.
deggial2005 #221 18/06/2014 - 11h02

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Hat setup, 3 cheap IR (photo was made before filling the LEDs), series circuit with classic 9V battery (with 270 Ohm summed resistors and switch on battery box)

Logilink 30FPS cheap (around 9 EU) webcam, IR filter removed, IR-pass filter mounted (2 polarizing filters from 3D passive glasses, mounted in the right position to block all visible light), 640x480@30FPS.

Works like a charm  :glasses:

Made a FRAPS video also with some GTR Evo gameplay (in 3D stereoscopic)
Edited by deggial2005 on 18/06/2014 at 11h23.
dipsky38 #222 01/07/2014 - 16h20

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benmeijer @ 19/10/2008 - 13h55 a dit:

My Infrared headset 3 point model:


What you need:

3 x IR led type SFH485P (the best leds for Freetrack)
3 x resistor 33 Ohm or 30 Ohm
Batteryholder with on/off switch 2x AA 1.5 v
Cheap headset or an old one
Heatshrink
Ty-raps
Installationwire (UTP cable!)
Old pen  (for upper led)
Metal wire (from an old paint bucket)

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hi
i want ask, what size heatshrink do you use on this one? there is a lot size and i dont know which one should i use
benmeijer #223 04/07/2014 - 00h04

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Registered on : 19/07/2008

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Use 8 mm heatshrink, it will be 4 mm after heating.
Crimson13 #224 05/08/2014 - 02h53

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Registered on : 18/04/2013

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I finally made my own!

The emitter is built from brass tubing, a small plastic container, and IR leds from radioshack.

It attaches to my headset with some velcro-like stuff.
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It's powered via the attached battery pack.  Originally it was attached on a short cable, and stuck on to my headphones with the velcro, but it was too heavy, so now it hangs around my neck on a lanyard.

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I use a playstation eye with IR filter removed and bandpass filter installed. (floppy disk film)
ernie_r #225 04/10/2014 - 10h25

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Registered on : 04/10/2014

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My 1st attempt at a reflective clip. Went the reflective route because I needed something more elegant and lightweight with minimum parts and wiring. Cost about £10 in parts off the internet and the use of an old pair of chipped lightweight rimless glasses, example in pic.  The yellow high reflective tape worked better than expected using an A4Tech infrared cam as recommended at this webite, cost approx. £20. Accuracy and smoothness of movement again better than I'd expected using only a 3 point reflective model; with a reflective model though, you must be prepared to keep your surrounding room environment as dim as you can for it to work effectively.

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Edited by ernie_r on 12/10/2014 at 10h01.

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