hiiyah777

I accidentally found these videos on Youtube. I'm not sure how many of you have seen them before, but this guy did a really good job of explaining exactly what he did and how he did it. Great info that could be applicable to other things, not just the Rheobus Extreme.

I really wish he would have posted these before I took the LEDs out of mine. I probably would have done a better job of removing them instead of just yanking them out. Oh well, enjoy!



Rheobus Extreme Fan Controller LED Mod Part 1:


Rheobus Extreme Fan Controller LED Mod Part 2:

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HAFenvy

Something to keep in mind and that wasn't mentioned in the video... LEDs have different forward voltage ratings so you need to measure what voltage is being put to those LEDs in the existing controller and buy LEDs that have that voltage range.

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orlywutlol

I think I'm going to buy this controller but I HATE how bright the LEDs are at full power. I read about a few successful LED mods on the non extreme version by soldering resistors inline with the LED. With me having no soldering experience at all I emailed performance-pcs about a possible mod but they said they can't do it on the extreme version. But they could do it on the non extreme as they are built totally different? [shrugs]. After seeing this video though it seems like it may be possible? I may just buckle down and try it myself but I'd hate to piss $40 or so down the drain if I mess it up.

HAFenvy

It is probably because when you look, the LEDs are soldered right to the board on that extreme and are sitting in the standoffs - you would have to get a resistor inline between the board and the LED and that is a pretty tight spot to do it. Not that it couldn't be done, it just would be a harder modification to do due to the limited space you have.

EDIT: You can buy LEDs that are not bright too - look for low MCD rated LEDs (MCD=millicandelas). I've got some 150mcd ones sitting in drawer around here somewhere which are not very bright - the ones on that extreme are probably in the 1000-2000mcd range (or higher).

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DennisC

Instead of resistors, can't you use some lower mcd LEDs that are not as bright.

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HAFenvy

Here is a better example - both are green LEDs, the one on the left is 150mcd and the one on the right is in the 1000s (don't have the spec in front of me but I know it is high). If you looked right in the end on the one on the right is blindingly bright whereas the one on the left is ho-hum bright. Note: I have them on a 3V cell which is more voltage than they should be on - I just did it to illustrate the brightness difference.



So if you want just enough glow of a specific color, look for low mcd rated LEDs and you'll be good to go. If you want to have that thing light up the neighborhood, look for high mcd rated LEDs. Just remember to check the voltage and buy the appropriate LED.

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orlywutlol

Lower mcd LEDs seem to be the better way to go. Just have to hunt for the right voltage. I believe this fan controller's LEDs have 12v going through them.

HAFenvy

I don't have a controller like that otherwise I would check it. I highly doubt they are 12V and will most likely be in the 2V to 3.5V range. Blue and white LEDs tend to be in the 3V-3.5V range as they typically take a little more oomph to do those versus reds which are usually down in the 2V-3V range. Being superbrights in there, they are probably in the 3.5V range.

EDIT: I'm only guessing on what the actual voltage is on those LEDs in the Rheobus - someone really needs to measure them with a voltmeter to confirm the actual voltage.

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orlywutlol

Yeah I am going to wait until I know the voltage for sure before I make a purchase. I have been browsing through ebay for Blue 3mm LEDs and all I am finding are ones that are in the 1000-3500mcd range with some even as high as 15000mcd.

EDIT: According to this review and what the box itself says the LEDs are 5.0v.

CattleRustler

I have that controller and its fed by 12v only. There may be something somewhere limiting the voltage to the led's but I doubt it since they pot up and down with the 12v dial to the fans. not sure tho

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