Wiimote Project

Hi Ben - I too am a teacher and are keen to give this project a go. I have ordered all the parts and I was wondering what bluetooth setup you have - are you using an adapter or laptop inbuilt?

so basically is about the peak wavelength and the viewing angle is important rite may i know what is beam angle and how is it calculate?

Thanks

James

Ben i know the datashet can be obtain easily, but now the problem is I have seen the beam angle written like this "+/-25" and some written like this "40". Is the the +/-25 means 50 degree? just want o clear this doubt

Has anyone actually done a comparison (tracking movement, max distance to Wii remote....) of similar LED's with only a difference of viewing angle?  I'd be more interested if the comparison was done on a whiteboard, not a computer screen.
For example TSAL6100 vs TSAL 6200?

fpill

I'm not suggesting these are better than TSAL 6400, just looking for and actual comparison of viewing angle not just theory.

Updated!
Now with the 'positive' vs 'negative' IR Led info.
"As in other diodes, current flows easily from the p-side, or anode, to the n-side, or cathode, but not in the reverse direction."

Check it here:
http://clinik.net/wiimote/wiimote_info_my_pen_2.php

The new image only:


Cheers
Francisco

UPDATED
The Missing Test
With the help (or the leds) of Undcon and my leds I made this test:

Vishay TSAL 5300 vs Vishay TSAL 6400

Sorry about the technical conditions and the bad photos...
And... Undcon: Sorry the long delay... but here they are!!!
'Read' this images with the Datasheet of the two Leds (links in my wiimote web page http://clinik.net/wiimote/wiimote_info_my_pen_2.php -hidden on vertical text).



about my new toy... check Arduino stuff in this good Portuguese store: http://inmotion.pt/








UPDATE after Ben
New set, new fotos, and changing the position of ir leds. Same results!





(NOT manipulated)



(NOT manipulated)



(MANIPULATED)

Francisco
Your tests provide a really interesting visual on the radient intenisty arc v angle of intensity. Given that both TSAL5300 & TSAL6400 output high volumns of IR in the 940nm (-+10) range that the Wiimote demands, the type of light is identical for both IR-Leds.

What makes the difference is the shape of light. I think this test validates that the TSAL5300 is a better choice for close range or rear tracking views. But the clear round IR from the TSAL6400 will make it preferential for long range or less oblique Wiimote views.

That said given that many are now diffusing the IR-Led (see: http://www.wiimoteproject.com/ir-pens/how-well-does-diffusing-the-led-work/) I think thye will both be much of muchness. exept in the close range and rear tracking orientations in which yes the TSAL5300 will have an advantage (diffusing the IR-Led, will even this advantage).

When I ran tests on the 100 odd IR-Leds over 6 months ago I didn't buy a TSAL5300 because it was so close to the TSAL6400.

Can you please also post more info (in a new post under http://www.wiimoteproject.com/ir-arrays/) on the fancy device you have plugged the IR-Leds into, looks like those wanting to make an IR-Array may find it a handy short cut.

benpaddlejones