Aura compatible single RBG LEDs?

[Kmpkt]

Hey Guys,

I know next to nothing about LED, but I am looking to get my hands on single RGB LEDs that I can just plug into an Aura header and have work. Does anyone know where I might be able to find something like this? Cheers.

 

[iFreilicht]

Get an RGB strip where each segment has just one LED on it. I think Adafruit has some, but I'm too lazy to search now. In general, every common anode 12V LED will work.

 

[PNP]

I'm gonna have to agree with @iFreilicht on this one. There aren't any bulb-style RGB LEDs that are 12V.

You can get discrete RGB LEDs but it's common cathode (ASUS AURA is common anode IIRC), not to mention only handling around 1/5th of the voltage.

 

[HeroXLazer]

I'm gonna have to agree with @iFreilicht on this one. There aren't any bulb-style RGB LEDs that are 12V.

You can get discrete RGB LEDs but it's common cathode (ASUS AURA is common anode IIRC), not to mention only handling around 1/5th of the voltage.

I found common anode LEDs, but I'm not sure about voltage. https://www.sparkfun.com/products/10820

 

[PNP]

I found common anode LEDs, but I'm not sure about voltage. https://www.sparkfun.com/products/10820

Huh. How about that.

Voltage is right there in the description: 2V for the red element and 3.2V for both the green and blue element.

 

[HeroXLazer]

Huh. How about that.

Voltage is right there in the description: 2V for the red element and 3.2V for both the green and blue element.

I meant if OP was going to try to do use those as it's not 12v.

 

[PNP]

I meant if OP was going to try to do use those as it's not 12v.

With a soldering iron, a multimeter, and some hefty resistors you could make it work.

 

[HeroXLazer]

With a soldering iron, a multimeter, and some hefty resistors you could make it work.

Yeah, you do have a good point.

 

[iFreilicht]

No need for a multimeter. Sparkfun uploaded the datasheet, which contains all the info you need.

You can calculate the series resistor value with R = (VS - VF) / IF, where VS is our supply voltage, 12V, VF is the forward voltage, 2V and 3.2V, and IF is the forward current, in this case 20mA.

This equates to 500Ω and 440Ω for the 2V and 3.2V LEDs respectively. Then only make sure that the resistors you're using are rated for more than 0.2W and everything should work perfectly fine.

Unless you're super worried about accurate colour representation, there's no need for extensive testing of different resistor values.

 

[PNP]

I intended the multimeter for determining the voltage range of the AURA header. I never assume things when working with undocumented proprietary systems.

I probably should have said 'voltmeter', but it's been a long time since I've seen a discrete wheatstone bridge.

 

[iFreilicht]

Oh I see. At least we can assume that it drives 12V LEDs, that's already a good bit of information. But yeah, when we're talking about a potential product, it's better safe than sorry.