Author Topic: new and stumped  (Read 7883 times)

Offline Svengb

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on: April 29, 2010, 12:17:07 AM
ok so i got a wii mot connected to my computer, i have made an IR pen using the source/radio shack canada product number 276-0142, and an old screw driver i had as well as a button from an old web cam.

my issue is now i cant seam to get the right angle for the wii mote to pick up the ir-pen that i have made unless it is almost facing it.

i have looked at my ir-pen through a portable back up cam i have and it is bright. as well as my ps3 eye and it shows well on there even with the filter.

the pen i am using is running off of a 3 volt power (2*1.5 volt AA batteries) with a resister inbatween ( 1 gold 2* black). witch i stoll from an old ir system for my gun con.

now i have tryed this on my lap top with the ir from the gun con which i can not identify the ir led on it. but it did work but they seam to stop working after a little while and i have also  cooked a couple. one because of a 9 volt... woops... lol and the other just stopped working.

so i got the ones from "radio shack" and they work, but like i said only if pointed almost at the wii mot.


Screen is 15" (13" long 8" high)

i guess my question is:

what am i doing wrong?
where should the wii mote go? i do know it is 45 dagree angle on the thing.
is there a better suited ir led i should find?

Thanks

SvenGB



Offline Svengb

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Reply #1 on: April 29, 2010, 12:29:01 AM
this is the ir led and the pen i made. with a  pic of the resistor.



Offline boonjin

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Reply #2 on: April 29, 2010, 02:09:47 AM
Hi,

You will need a high-powered IR LED such as the Vishay TSAL 6400.

To save you trouble from testing the various IR LEDs, it is better just to get the Vishay TSAL 6400.
http://www.vishay.com/docs/81011/tsal6400.pdf

Also, if you are using a non-genuine or faulty Wiimote, the sensitivity may be very low like you have mentioned where you will need to face the IR LED directly to the Wiimote.

Regards,
Boon Jin

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Offline Svengb

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Reply #3 on: April 29, 2010, 01:41:51 PM
to the best of my knowlage it is an official wii mote. and i will post a couple pics of the light that is emmeted from the ir pen i made.



Offline Svengb

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Reply #4 on: April 29, 2010, 01:44:31 PM
Hi,

You will need a high-powered IR LED such as the Vishay TSAL 6400.

To save you trouble from testing the various IR LEDs, it is better just to get the Vishay TSAL 6400.
http://www.vishay.com/docs/81011/tsal6400.pdf

Also, if you are using a non-genuine or faulty Wiimote, the sensitivity may be very low like you have mentioned where you will need to face the IR LED directly to the Wiimote.

Regards,
Boon Jin

if you take a look at the specs the one your directed me too is identical and i think mine is more powerful then that one by 10nm.



Offline boonjin

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Reply #5 on: April 29, 2010, 06:42:42 PM
Hi,

The 950nm and 940nm are actually wavelengths of the emitted infrared. It is not an indicator of the power emitted for this case.

The Wiimote has a bandpass filter in the front which current experiment shows to be the most optimum of about 940nm. Even if took pictures of the light emitted from the IR pen, we will not be able to determine whether the Wiimote will be able to see the IR source as the bandpass filter may have filtered off or reduced the transmitted power significantly.

The easiest would be to test on another Wiimote or test with another working IR pen.

Regards,
Boon Jin
« Last Edit: April 29, 2010, 07:14:09 PM by boonjin »

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Offline Svengb

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Reply #6 on: April 29, 2010, 07:25:38 PM
that is good to know, i will see if i can locate another ir led, as well as a different wii mote. i did set up the other ir led i have from the gun con locator and it did work a little better but what i keep running into is an inability to get the wii mote aimed in the right spot. i put it where i think it is looking at the full screen but it only registers 2/3rd's of the actual display.



Offline Svengb

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Reply #7 on: April 29, 2010, 07:27:23 PM
i was wondering if i got one of the nyco bars and dismantled the ir's out of that would that work? but i am guessing the cost to ship one of the pre-made pens is probably cheaper.



Offline boonjin

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Reply #8 on: April 29, 2010, 09:25:37 PM
i was wondering if i got one of the nyco bars and dismantled the ir's out of that would that work? but i am guessing the cost to ship one of the pre-made pens is probably cheaper.
Yeah, you can just get a pre-made pen or just purchase the IR LEDs. Most sellers here do have these.

that is good to know, i will see if i can locate another ir led, as well as a different wii mote. i did set up the other ir led i have from the gun con locator and it did work a little better but what i keep running into is an inability to get the wii mote aimed in the right spot. i put it where i think it is looking at the full screen but it only registers 2/3rd's of the actual display.
You can use Smoothboard's Calibration viewer to assist you with the calibration. The field-of-view of the Wiimote is only about 40 degrees. Therefore, you should place the Wiimote approximately 2 times the screen height. From there, you can adjust the position with the use of the Calibration viewer.

Regards,
Boon Jin

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Offline Svengb

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Reply #9 on: April 29, 2010, 11:44:43 PM
thanks that was a big help now i will try it out. and if i get what your saying to be right. if i am using a projection screen that is 60" high i will need to be 120 inch's away.  will it even work? and if so will it work well?



Offline boonjin

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Reply #10 on: April 30, 2010, 01:17:42 AM
Hi,

For a large screen like yours, it will still work well but you will need to put effort on the positioning of the Wiimote and ensure that you have a sufficiently powered IR pen. You may need to place the Wiimote as close as possible to the screen to achieve the highest tracking utilization.

If you find the results unsatisfactory even with the correct positioning and IR pen, we would recommend to use two Wiimotes that should enhance the tracking quality.

You can download and take a look at Smoothboard User Guide: http://www.smoothboard.net/files/doc/Smoothboard_User_Guide.pdf

In this page you can get some information regarding positioning your Wiimote.
http://boonjin.com/smoothboard/index.php?title=Mount_and_position_the_Wiimote

Regards,
Boon JIn

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Offline shakespeare1212

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Reply #11 on: May 01, 2010, 12:35:24 PM
Search for IR pen on ebay and you will find both IR pens and the TSAL 6400 IR LED. You will find that my items are the best price, and my feedback is 100%. My ebay user ID is shakepeare1212, and we offer a 7 day money back garantee, accept that you may have to pay for shipping, each way.

James Mclain
Owner and Creator of
Whalebone IR and Software

http://whaleboneir.com

or view and buy our products on ebay:

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