FreeTrack Forum

Welcome, you're not connected. ( Log in - Register )

RSS >  Easy build setup with SFH485P, Anyone can build this !   (for 5v Usb serial build see Page 2)
benmeijer #31 19/11/2009 - 00h46

Class : Habitué
Posts : 208
Registered on : 19/07/2008

Off line

I have my cam (Wiimote) on top of my screen (connected with velcro), not centred, but in line with my clip (on my right ear). The dots in free-track are in the center.

Don't forget to adjust your positions from your head-pivot in the model-tab, it could be negative or positive, depends on where the clip is (left or right) for horizontal position.

Just play with it in a game/simulation  in windowed mode, so you can adjust these setting and see if your head movement is natural.
eLeTrO #32 19/11/2009 - 16h56

Class : Apprenti
Posts : 16
Registered on : 12/11/2008

Off line

Oooopsss... now it´s working. My bad!!

Thank u my friend!!!

:santa:
dutch #33 28/11/2009 - 10h50

Class : Apprenti
Posts : 47
Registered on : 11/04/2008

Off line

Moderators, Make this a sticky!!!! Or ask Ben to make a resume'
Ben, this [you] helped me a lot, in building free-track device.  :love:

Forgot something:  moderators, some photo's/link's from the sticky's do not work maybe it is better to remove these replies  so keeping the sticky's clean and up to date :rolleyes:
Edited by dutch on 28/11/2009 at 10h55.
F2kSel #34 28/11/2009 - 22h51

Class : Apprenti
Posts : 2
Registered on : 28/11/2009

Off line

Don't know if anyone can help.

A long time ago I got some  IR LED's  SFH485p  but never got around to doing anything with them.

The problem is now that when I try to find out the values for these I get different results and I don't have a clue where I purchased them.

RS give different vales than Furnell.uk  so I don't know what resistors to get.


I would like to try doing a USB powered version but also get some other resistors for a battery version as I have enough IR LED's.

The other thing is trying to identify the resistors on the site as the colours don't seem to match the ones illustrated here.


Can anyone put me on the right track please?
benmeijer #35 28/11/2009 - 23h20

Class : Habitué
Posts : 208
Registered on : 19/07/2008

Off line

See if this link will help you: http://www.hobby-hour.com/electronics/resistor_color_code.php

Still questions? Post an image of a resistor (on www.tinypic.com )  /  copy URL and paste it in this topic and we will help you.

About the different values of the SFH485P, use 1.5 Vf (3 Vf is only used in pulsating circuits)  and use 50-75 mA for current) (max. is 100).

@Dutch: thanks for positive reaction :)

(edit: link to tinypic didn't work
Edited by benmeijer on 26/03/2010 at 10h16.
F2kSel #36 29/11/2009 - 12h25

Class : Apprenti
Posts : 2
Registered on : 28/11/2009

Off line

Thanks, I'll see what I can knock up.

Just a wild Idea would it be possible to use 1 IR_LED and then use fiber optic cable to transmit the signal.
benmeijer #37 29/11/2009 - 20h28

Class : Habitué
Posts : 208
Registered on : 19/07/2008

Off line

F2kSel @ 29/11/2009 - 13h25 a dit:

Just a wild Idea would it be possible to use 1 IR_LED and then use fiber optic cable to transmit the signal.



Theoretically this should work if you can split 1 source of light to 3 points (end  of fiber cable) of 5 mm. But pratically .....?

It's easier to use 3 normal leds and connect them with wire.
Chunk3ym4n #38 15/12/2009 - 00h32

Class : Apprenti
Posts : 17
Registered on : 15/12/2009

Off line

Hello this is my first time here and I am interested in using Freetrack for my video games, I can understand the soldering and lighting up the LED lights but how do I construct a 3 point clip? Is there any specific measurements for it because I am not sure how long the measurements for it have to be, is there a guide on making a 3 point clip? Also if I am using the Quick Cam Orbit on this page(http://www.free-track.net/english/hardware/webcam.php#Logitech) would it be fine to just use these infrared LED lights as long as I have three layers of photo film over the camera?
redkite #39 15/12/2009 - 13h37

Class : Apprenti
Posts : 2
Registered on : 25/11/2009

Off line

I have little experience with electronics but am confident about building free track thanks to this guide, however I was wondering if the resistors can be taped over.

Just waiting for my battery holder to arrive before I can assemble now.

Cheers
benmeijer #40 15/12/2009 - 19h58

Class : Habitué
Posts : 208
Registered on : 19/07/2008

Off line

Chunk3ym4n @ 15/12/2009 - 01h32 a dit:

.......but how do I construct a 3 point clip? Is there any specific measurements for it because I am not sure how long the measurements for it have to be, is there a guide on making a 3 point clip?


see this topic:  Click



Last picture (from Ranger) with dimensions in mm.

Posted Image


redkite @ 15/12/2009 - 14h37 a dit:

...... however I was wondering if the resistors can be taped over.



If you use isolated tape ...... the answer is yes.
Edited by benmeijer on 15/12/2009 at 20h01.
Chunk3ym4n #41 17/12/2009 - 07h35

Class : Apprenti
Posts : 17
Registered on : 15/12/2009

Off line

What wire do I need to get for soldering the LEDs to the resistors to the batteries? Does specific wire such as speaker wire matter?
carterdan #42 17/12/2009 - 15h45

Class : Apprenti
Posts : 2
Registered on : 16/12/2009

Off line

Can someone tell me if these are the correct parts i need for the first build?

IR EMITTER, 5MM, 880NM
http://uk.farnell.com/jsp/search/productdetail.jsp?sku=1212738

BATTERY HOLDER
http://uk.farnell.com/jsp/search/productdetail.jsp?sku=1702631

RESISTOR, 0.25W 1% 30R
http://uk.farnell.com/jsp/search/productdetail.jsp?sku=9341722

I know thats not the same ressistor as the one used in the first setup but i cant seem to find it on farnell.com.

Thanks for the advice.
benmeijer #43 18/12/2009 - 21h49

Class : Habitué
Posts : 208
Registered on : 19/07/2008

Off line

carterdan @ 17/12/2009 - 16h45 a dit:

Can someone tell me if these are the correct parts i need for the first build?

Yes you selected the right parts .... but you have to use an external on/off switch, because Farnell has no battery-holder with switches? I ordered my battery with switch here : click - dutch store

@Chunk3ym4n: use isolated wire ca. 0.15 mm or use telephoneline-cable / cable from old mouse .... etc.
Edited by benmeijer on 18/12/2009 at 21h50.
Pulse #44 22/12/2009 - 05h07

Class : Apprenti
Posts : 2
Registered on : 22/12/2009

Off line

If you live in the USA then the place to go is Radio Shack. They have the high intensity IR LEDs (.2V 100ma I think), resistors (though I could only find 33ohm 1/2watt - they seem to be working fine), wire, battery holder, soldering iron, etc.
C6_LeBorgne #45 22/12/2009 - 07h09

Class : Beta Tester
Posts : 224
Registered on : 09/08/2007

Off line

sorry wrong place !  :gene:
Edited by C6_LeBorgne on 27/12/2009 at 09h25.
Posted Image
C2D 6420 , 2Go DDR II , 570 GTX , Wiimote , A-quip mini BT Dongle , Thrustmaster Warthog , Pro Gamer Command Unit et PCDASH2

 >  Fast reply

Message

 >  Stats

1 user(s) connected during the last 10 minutes (0 member(s) and 1 guest(s)).