Black plastic won't give you the same effect, though I've seen LED fans that have black plastic and they do give the LED lines when spinning.ģrd wire (RPM sensor wire). Tinted plastic may give unwanted effects (but if you want to try, go ahead, it may produce a neat effect, I tried one RGB LED on a blue-tinted fan and it looked OK). The fan I am using cost $5 on NewEgg and they sent me a free replacement for one bad LED (yet they let me keep the "bad" one so I used it for this project).Ĭlear plastic. If you don't have an LED fan already, you can't just convert a plain fan. Having seen a lot of cool projects using RGB (red-green-blue) LED's online, I figured it would be a good project. The plan? A self-contained, digital, full control fan controller based around an AVR microcontroller that could have fine control over the fan's speed, read back the RPM, and control not just the brightness of the LEDs but also the color. I got a free replacement for the bad LED, but I already had my mind set on converting the fan with the bad LED into something much better using what I'd learned about microcontrollers last Fall. I got a nice blue LED fan for the front but one of the LED's was burned out and it didn't look good, plus the fan was loud and I was out of controllable channels on my motherboard. Well, I got a new case for my server and it took 120mm fans, so I had to buy new fans for it. They source their voltage from the fan's power input, so if you're using a fan controller (either the one built into your motherboard or otherwise) to slow the fan, the LED's get dim. They usually come in blue, sometimes red or green and consist of a basic PC fan with 4 bright LED's mounted in the 4 corners.
We've all seen LED fans that you can put in your computer to make it look cool.
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