Author Topic: A question?  (Read 5154 times)

Offline joaoleal

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on: May 09, 2008, 10:13:09 AM

Offline Descalzo

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Reply #1 on: May 09, 2008, 12:52:12 PM
Looks like it's just Red, not IR, so no.  I have heard of people soldering on a new IR LED to replace the red one, but for that much work I'll make my own.

Offline Smokeduv

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Reply #2 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.

Offline benpaddlejones

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Reply #3 on: May 09, 2008, 07:11:01 PM

Found a more detailed site on them:

They are only ultraviolet 350nm, Infrared is around 940nm.

I think the general consensus is there is no mass produced IR-LED pen on the market (simply no demand for a pen that produces light that can only been seen by highly specialised devices with a momentary switch placed perfectly for writing).

However this does look like an awesome pen to retrofit (need to check switch is on side as it looks like the switch is on the top of the pen, but can't tell from the picture).


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Offline techie

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Reply #4 on: May 10, 2008, 06:25:37 PM
Its been alittle while since I was here. I've been collecting keychain lights and converting them to find the best solution to this issue. I am a tech at an elementary school so durability is important to me as well as looks. I started building them and was told by "the system" that I am not a registered vendor so I could non sell them to the schools. I could sell them to teachers but what teacher in FL has money? Not many when they are laying them off. So I posted one on eBay and I may put the others up if it goes. I started the price below cost to see where it would go. Here's a link if you want to watch:

Not sure why the link is so long. The item number is 290229670170