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Xin
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« on: April 19, 2008, 11:25:09 AM »
Hello,

This is my basic pen. It's very usefull.
Material: a battery AAA, 2 rigid wire, a IR led,



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UndCon
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« Reply #1 on: April 19, 2008, 11:33:49 AM »
As long as you are saticfied Wink

not nice - but gets the job done..

EDIT : spelling
« Last Edit: April 23, 2008, 05:50:36 PM by UndCon » Logged
rod
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« Reply #2 on: April 23, 2008, 04:56:01 PM »
Interesting, I'm planning to do mine just as simple as yours is.
I have a question though. Doesn't it need a resistor?
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UndCon
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« Reply #3 on: April 23, 2008, 05:52:04 PM »
If you are using a 1.5volt battery you need a resistor

If you are using a 1.2volt rechargable you dont need it
(if the IR-LED is 1.2 volt of course)
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Xin
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« Reply #4 on: April 24, 2008, 04:08:15 AM »
I don't use resistor, but I don't know if I need it. Because I finded the IR led in a old box in a cabinet. But the led no had burn, and I turn on for more than 1 minute.
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UndCon
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« Reply #5 on: April 24, 2008, 12:37:16 PM »
here is my tip

http://ledcalculator.net

Many IRleds are 1.2volts, yours might be as well...

But hey - you didnt pay anything so you have nothing to loose - if it burns...then you get a new IRled (that you know the specs on)

//UndCon
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