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Old 10-13-2006, 05:07 PM   #1
Fibre Optix
Member (9 bit)
 
Join Date: May 2004
Location: Toronto
Posts: 301
Do you know anything about LEDs?

Hi all.

I like to play games in the dark. By accident the other night while playing CS:S I had a small LED flash light on, and it shinned on the keyboard. I thought wow this is useful, not over powering and it looks cool. But it was frustrating to adjust the mini light to go and stay over my keyboard.

So I have an idea.
There are these LED lights you can buy for your car that you hook up to your dash via dual sided sticky tape and by pluging into your cars power outlet. like these. http://www.carxpressions.com/images/...cs/10180_b.jpg
(The ones I bought can swivel) So I was thinking it would be cool to hook these up to a USB cable and place the lights on the sides of my monitor pointing down to the keyboard.

SO... I took an old USB mouse and cut the mouse off, I also stripped the red (+) and black(-) wires down. I took apart the LED light power adapter leaving the switch in tact along with the resistor and attached the negative wires together. So I pluged in the USB cord and attached the positive and Negative USB wires to the Negative and Postitive wires of the LED light kit.

It works great. All I need to do now is solder and heat shrink the wires and I'm done. BUT something occured to me.

The LEDs originaly were intended for a 12V power source. Now that I adapted it for a 5V (USB) power source, Do I still need to replace the resistor?

Here are the specs of the LED kit.

DC 12 V
50mA (25mA x 2 LEDs)
1m <-- I don't know what this is, the package is in Japanese.
Attached Images
File Type: jpg LED_specs.jpg (25.5 KB, 43 views)
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Last edited by Fibre Optix; 10-13-2006 at 05:32 PM.
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