Author Topic: 16 LEDs IR pointer  (Read 6801 times)

Offline antoniubieto

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on: April 17, 2008, 04:44:06 PM
I use the whiteboard in classroom with a screen about 2x2meters. I put the wiimote 3meters away because of the viewing angle and because is a safe zone against students.
In my first attempt with a 1LED pen prototype, the results were dissapointing. I look for a better IR LEDs in the shops of my town, but they have none better than I used.
Then i bought 16 low efficiency LEDs like the first one and build a POINTER. It can be powered with batteries or with an USB port.
The results are impressing: I can click with the pointer touching the screen or at 10cm appart.
I've taken photos of the building process. You can see it in my blog There is also an electronic schematic and calculations. The drawback is that the explanations are in catalan (very simililar to spanish).
I hope that it'll be useful.

« Last Edit: April 17, 2008, 04:50:47 PM by antoniubieto »

Offline Yozef

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Reply #1 on: April 17, 2008, 08:00:47 PM
That's pretty impressive looking.

Wish I could read the instructions.  :(  I'm still trying to learn a bit about electronics, reading schematics and converting/figuring the voltage needed and resistors and such.

Looks pretty extreme, too...  heh.

Nice work though!