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Electrical Question Leds+Molex

R

Ravenhq

n00b
Joined
Mar 31, 2013
Messages
2
Ok, so I was planning on doing a 'ghetto mod' by putting a usb hub from the back of my PC, in through a cut pci card slot cover to power two "dollar store flexible usb LED lights" inside the case. Unfortunately, I've found that the flexible metal housing on the LED light creates sparks when it comes in contact with the inside of my case. Thankfully my computer is fine, so I cut one open and this is what I find.

IMG_0098upa1.jpg


Ok, I have no idea what the exact specs for the LEDs are but I'm going on logic here.
USB power is +5v. I assume that's a resistor that makes this single led safe to run on a 5v usb power source (this is from the dollar store so it might not be true)

The question is, can I connect two or three of these to a molex on the +5v (red) in parallel?
 
You can get Cold Cathodes for like $15 or less. Are you just trying to light up the interior of your case?
 
Yep, I have a salvaged HP case. I popped out the front of case bay covers and made new ones with plastic canvas. I wanted to get the flexible lights to point out the new plastic canvas covers and the side vents. Ebay has a molex led light thing for $6 that I'm trying to replicate for $2, I'm trying to do it on the cheap. :D Cold cathodes areie inefficient because I need two colors in two/three directions and there isn't enough space for the cathodes.
 
The LEDs are probably 12v, but I would try the 5v first and see if they light up. No resistor is necessary in either configuration.

Yeah you could connect 3 in parallel and it would not affect anything else in the system. Their power draw is very small and they cause no interference unlike cold cathodes.
 
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