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Messages - Yozef

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General Discussion / Re: LCD Projector project
« on: May 18, 2008, 01:07:46 PM »
Cool, thanks for the tip!

Hopefully this page will translate pretty well so that I can read what's going on!

Thanks again, I'll give it a shot!

General Discussion / LCD Projector project
« on: May 18, 2008, 12:32:58 AM »
I'm building an LCD projector with the intention of coupling it with a wiimote whiteboard setup, and I am curious as to a few things.  But I'll explain how I'm creating it.

I have an older LCD monitor whose backlights burned out some time ago, which I've dismantled and will use to display my picture.  using two magnifiers, one in front and one behind the lcd, bend and magnify the image.  A projector lens to orient and give control over the image's sharpness, and a light source to project the image onto the wall.

My main question right now is about the light source.  I've read around a bit, and a lot of people prefer halogen lights.  I really dont want to put that much heat into my DIY projector, but I still would like a nice clear picture that I can get up to about 40" wide.  Many suggest 300-600w halogen.  I am curious as to whether anyone here knows much about light sources, and if I could substitute the harsh halogen for a cooler, greener light source. 

Right now, I've got my LCD screen to the point to where I have to solder some insanely tiny points to other insanely tiny points in order to get the design to function well.  Heh.

All tips and constructive comments are appreciated.

 ( source of the original DIY LCD projector: )

Project Ideas / Re: I Help? and help me?
« on: April 29, 2008, 11:14:02 PM »
Is this TV a touch-sensitive, or is the plan to use IR as an input for the "touch"?

I could see it working in such a way to maybe navigate while standing in one place, but the calibration would have to be very tight.

Project Ideas / Re: Wiimote laser tag
« on: April 29, 2008, 11:07:55 PM »
You also need to count in the factor of walls and how they can dampen a signal and make it weaker. Assuming that most lasertag facilities have a plethora of walls.

Most wireless controllers will say something along the lines of "30ft range in clear room, 10 foot through walls"  or something of the sort.

IR Pens / Re: IR pen
« on: April 19, 2008, 12:12:51 AM »
AAAA batteries?  Ick, that is much too obscure for myself.

I don't see a finger-button near the top, but that's the only problem I see.

I guess it would boil down to personal preference.  I would like to build one myself for a couple of reasons, personalized design and learning by doing.

To each his own. =D  If you do decide to go for it, best of luck!

IR Pens / IR Pen Instructable (by jahg)
« on: April 18, 2008, 05:54:36 PM »
Pretty neat instructable for us Noobs out there, hehe.

Uses a highlighter casing to house the contents.

I'm thinking the program he uses is Photoshop, at least... in the video I saw.

But one could use paint, or any other kind of drawing software.

As for the program exiting, I'm unable to help with that.  I'm on a Mac platform.  =D  Sorry.

Wiimote Interactive Whiteboard / Re: Newb questions..
« on: April 17, 2008, 08:05:50 PM »
I also would like to see if there's an IRC for this board. =D

IR Pens / Re: 16 LEDs IR pointer
« 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!

IR Pens / Re: is the infrared Ligth dangerous?
« on: April 17, 2008, 07:45:08 PM »
I don't think that Nintendo would be allowed to mass produce this game system if the emissions from the sensor bar, a pretty vital part to the whole experience, was dangerous in any way.

I don't see how they would get away with it, hehe.

No doubt that, if strong enough, an IR source could be harmful to us.  Breathing has been said to give you cancer, but I'm still doing it.  =D  Haha/  :D

IR Pens / Re: DealExtreme
« on: April 17, 2008, 07:40:18 PM »
Hehe, no kidding.  I'm awaiting my order right now... 

Order some gifts for a few buddies, and some little gadgets and toys for myself, and still didn't spend over 40 bucks!

It's great.  I've had very little problems with them, almost none.  Which is a lot less than what I've had to put up with from other online retailers.

Happy shopping!

It's not possible to blind wiimote one from player 2's IRs, but it is possible to separate the players.  The users would have to stand far enough apart, which would make sense anyway, seeing as how you need ample room to move about, and don't want to bap each other in the face...  Even if the signal does creep in from the undesired player's headgear, it would only cause a momentary hiccup. 

Wiimote on the head would be a bit heavier than I'd want to be moving around with, as well as like you said, goofy looking.  Would probably need a chinstrap or helmet thing or something.  Uncomfortable as well.

If players use some common sense, or read an instruction booklet, then there would be no problem. =P

IR Pens / DealExtreme
« on: April 16, 2008, 02:19:06 AM »
I've been buying from these guys for a while, they're an out of country retailer (because they carry video game system hacking materials.), but they do have a nice selection of diy electronics for a great price.  best of all, free shipping!

I found a pack of 20 5mm IR leds on here for a little less than 3 dollars.  I've been looking for some IR LEDs for a few days now, and have been getting shafted on shipping fees, so I gave up... then I remembered these guys.

Hope that this is helpful =D

If you are using a Mac, I know of a few different programs that read the roll-pitch-yaw inputs and output them in a graph that is updated in real time. aka.wiiremote is one of them.  The output graphs help a lot when trying to determine how you want the wiimote to react at certain angles.

I'm thinking about this concept, and working with how the wiimote detects the lights and such, though I do not fully understand right now how it all works and such, but if one were to use one recieving wiimote per player/user, from my understanding, one wiimote can read up to 4 ir signals.  if there are two ir signals per player for the head tracking, and one wiimote per player, then making wiimote one face player one, and wiimote two face player two, while they give each other some room...  and giving the game/software a splitscreen where wiimote one controls split one's input, and likewise with wiimote and split two.

Code: [Select]
        /     \   

     P1         P2

in this diagram, / and \ are wiimotes directed at their respective players.

This allows for no more than headtracking, no other user input.  if there was interest in adding player input like say, a fps sort of thing, then the other two wiimotes could be put to use for player inputs.

This also brings an idea/concept to mind, what if you had two players, each with headtracking, and each with wiimotes in hand, aiming at one another.  So player two is like player one's moving sensor bar... and vice versa.  Not sure how that all would work... just throwing an idea. =D

I'm not sure how the refreshrates and whatnot work exactly, so you got me there smoke, hehe.

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