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Messages - Smokeduv

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1
IR Pens / Re: How well does diffusing the LED work?
« on: September 29, 2008, 04:31:19 PM »
Joriq, well, unfortunately i gave my IR pen to a school, they needed one to replace the one they were using (expensive and battery-sucking one), so, i don't have it right now to show you, but i can tell you that i had to show them it was better than the other one, and they were convinced, it worked great, it was made with hot glue for the diffusing thing, the bad thing is that i lose some light intensity, but it is very accurate because now it works with the diffused light, not the reflection in the board. Another strange thing, it would want to say that diffusing light is the best, but unfortunately it doesn't works as good as with visible light LEDs, i don't know why, but it doesn't lights up all the glue, or led if you use sandpaper as with any other LED, maybe it is because of the LED not being as powerful or what. Anyway, try it for yourself and share your results. It worked for me (although not as good as I wanted, but it worked).

2
IR Pens / Re: New IR Pen Concept
« on: September 27, 2008, 04:43:35 PM »
it can be done (as shown by Martyyn, and by the way, very clever idea) but for a good whiteboard it has to be wireless as someone said. The only problem i find is not the size or anything like that, but the price will be a bit high  :( if you want to use a bluetooth mouse, destroy it and then put everthing in a DIY pen, well, unless you find a very cheap bluetooth mouse, hehehehe.

3
IR Pens / Re: Bounty: IR-glasses for head tracking
« on: September 27, 2008, 04:35:27 PM »
well, although you should've posted it on the Head Tracking section, i can tell you that you can do your own and maybe it would cost you like ehm, depending on the glasses, but a very cheap ones, like for laboratory or for wood stuff you can make them for $15, so, if there are some good ones for $30, well, they have to win something, so, i don't think it's a high price

4
IR Pens / Re: How well does diffusing the LED work?
« on: September 23, 2008, 10:57:32 AM »
well, it works in a way, the problem starts when you diffuse the light because you have to get a opaque finish that will affect the light intensity, so, if you have a very good LED, you cn give it a try, I have tried with hot glue, sandpaper and some matte finish spray being the spray the faster but the one with very different results every time due to the quantity of paint. Hot glue seems to be the better for me because it doesn't damages the LED and also, depending on the cooling time or the temperature on the glue it gives a cristal clear finish or a non-clear finish I don't know exactly why, but give it a try and share your comments.

5
IR Pens / Re: Omnidirectional IR diode
« on: May 14, 2008, 12:47:44 AM »
Oh, by the way, as inio says, hot glue looks very, very nice if you put it correctly, o it doesn't looks like a bad DIY project, hehehe

6
IR Pens / Re: Omnidirectional IR diode
« on: May 14, 2008, 12:45:47 AM »
Wait a little until i take a photo of the IR pen because it's been used in a school already, let me say to them to borrow it to me for a day so you can see what I say about the hotglue, it's not big deal though.

7
IR Pens / Re: Mouse movements reversed???
« on: May 13, 2008, 03:29:59 PM »
It happens sometimes when the button is not very good, so, if it turns on and off because it doesn't makes contact very good, it will be as many clicks, so it will take that points as calibration points, look if your button works well, I know it sounds a bit dumb, but sometimes the most simple thing is the answer.

8
IR Pens / Re: A question?
« on: May 09, 2008, 07:09:03 PM »
There are some cheap LED flashlights where you don't even need to solder the LED so, you just change it for a IR LED very easily, and is a very cheap option, and a very good IR pen to have, hehehe. I haven't posted images of my IR pen, but believe me, it is really really very easy to do, you don't even need a resistor and some other things, just the LED and the batteries (because the cheap flashlights uses this wristwatch batteries and they are just connected without even soldering them, and they last a lot of time!!), and if you take the time, you can make it in a way that your IR pen will look very good.

9
IR Pens / Re: Omnidirectional IR diode
« on: April 28, 2008, 07:08:24 PM »
A lightbulb does work, but i don't think it would be a great idea since the lightbulb has some disadvantages, like getting hot and it requires more power to light the bulb, so, you need better batteries (like 2 AA or something like that, instead or just some wristwatch batteries that cost a little and lasts a lot in a LED).

Using hotglue works great and is a better choice, it widespreads the IR light so it can be visible from a wider angle (not a lot BTW) but any improve is always good.

10
IR Pens / Re: What am I doing wrong?
« on: April 17, 2008, 01:04:50 PM »
Yes, it works even with cellphones with camera, hehehehe. You can even use it as a night vision camera with an IR array and a cellphone, camera or whatever digital camera you can find ;D, it will work even with all the lights gone, zero light (visible, of course, because the IR is some kind of light :P)

11
IR Pens / Re: Problem for drawing
« on: April 17, 2008, 11:57:39 AM »
Oh, another thing, the modification thing you say about using the IR to move the mouse and another thing to use the click and right click is great. There's some software out there about it, they simulate the right click when you have the IR light on for some seconds, I don't remember well but some other have made a better research about it. There is a post about it in this forum, I don't remember where, but take a look and see if it meets your requirements.

12
IR Pens / Re: Problem for drawing
« on: April 17, 2008, 11:52:34 AM »
Hi, I've been in the same thing as you, I have been trying a lot of things, and I think it has to be with te tracking resolution of the wiimote, of course, the resolution is not as high as a real interactive whiteboard, but it is good enough to make a good drawing, so, the thing is, you have to use all the tracking potential of the wiimote, so, if you are only using like a 15% of the tracking field, your resolution will be too low so, the area in which you are working is so small and the IR point is big and so, your movements not so fluid. Actually, it looks like if it was aliased or pixelated to make an example, so, with a proyector, the problem is minimum because the area is big, but with a laptop screen or something like that, if your wiimote is too far, you will lose resolution, so, put your wiimote closer.

You can see the % of the tracking area in the wiimote whiteboard software, it's below where the IR points are detected. Give it a try, try increasing that number, it worked for me.

Hope it helps you.

13
IR Pens / Re: IR Laser
« on: April 16, 2008, 05:27:33 PM »
I don't know if you can manage to have a normal laser pen into a IR laser pen, if you could, the point where you are targeting will indeed be traced by the wiimote, but i don't know if you can do it easiliy, the normal IR lasers are the carbon dioxide ones (too expensives, big, anyway you can't use them), or, I think the laser from a cd-rom, a discman, any that uses normal CDs uses IR laser, so, you can possibly find them with some ease, the problem would be to see what you are targeting at, hehehe, if you can't see the laser, you can't see where you are pointing at :P

14
Ok, your post is very interesting, and, maybe, not too difficult (hardware related), because the glasses can be found, if you are a hardcore pc gamer you may know that nVidia has a stereo drivers so, using a 3d LCD glasses (like the ones you said where one eye is open when the other one is closed), so, if you make the program use one frame for a player and the next one to the other, and the glasses are both closed for the entire frame and open in the next frame, you could see the individual head tracking. The cons I see is the refresh rate, if you split the frames and you use a normal LCD screen, every player will see the game in 30 fps, so, it won't be very good if the refresh rate is so slow you can see the blinking, but, if you have screen that draws 120 Hz you can see, for every player, 60 fps, or you can use more players, but you have to keep a high fps. Another one is programming, that would be the mayor problem, hehehe, maybe asking Johnny Lee, hehehe

About the split screen thing, yes, maybe it's a better idea, but, how if anybody can have a full screen effect in the same room?, hahaha, everybody can dream, hehehe.

15
Project Ideas / Re: Headtracking Image Viewer
« on: April 15, 2008, 04:49:02 PM »
It would be great if instead an image you could use a video or some "screensaver-like" thing to see live scenarios, so, you can see for example, a scene of the beach, and then, when you use it in your plasma TV or something like that, you can have your own view to the sea or any cool place, you will have a great view, hehehehe

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