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blackBull

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  1. Hi! I just wanted to share my personal experience to help others in need with this matter (if any XD). The easiest solution that came to my mind to solve this issue was to buy a voltage regulator. You just have to put it between the +12V of the RGB non-addressable header on the mobo and the +5 of the LEDs and then connect to the ground each colour accordingly. Using the original controller that came in the box with the fittings, for the colour white at full brightness I measured 0.85A at 5V, hence 4.25W, which is a lot of heat for a single resistor, so I thought it would be better to go for a voltage regulator. I used a standard LM7805, and the measurements were almost identical to the original controller. https://www.sparkfun.com/datasheets/Components/LM7805.pdf For the test I used a 12V 2A power adapter I had home to avoid testing directly on the mobo controller. If you're interested I'll test post the measurements I'll make once installed directly on the mobo. To sink the heat produced by the voltage reduction ((12-5)V*0,85A=5,95W) I built a very simple (yet not so elegant XD) heatsink, binding a piece of aluminum and #### it on the back of the voltage regulator and putting some thermal compound in between. Even after leaving everything on for an hour the vr wouldn't burn my fingers, and who has been using them in the past knows how much they're able to heat up... This is the result: And very easy schematics ( simplified all LEDs into one pth for each colour):
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