So I got some computer LEDs in the mail and i hooked them up to a molex power cable which also had my fractal design r4 fan controller connected to it and they started acting really weird..
They would never all light up and then when i would change my fan speed the LEDs would get brighter and darker and in the end only about 10 out of 40 or so of the LEDs stayed working.
I believe so since you are introducing the voltage regulation in the LED switch. Try using a different Molex or if it has a pass through use that. So instead of LED Switch>Fan Hub have it go Fan Hub>LED Switch
Doesn't seem right, the fan controller shouldn't effect it when they're connected in parallel. Could be that it's overloading the molex connection but it shouldn't use that much power. Have you tried using a different molex plug ideally on another cable?
Yeah i tried that as well and acted differently there too, it mainly just wouldn't work at all, i think it's faulty as i am getting a replacement one but the fan controller controlling it is still weird..
The exact setup at the time was a 4 way pci-molex adapter that would've had the fan controller on the last on and the LED controller before it, but the voltage changing would have to be on teh little chip near the switches, otherwise you'd have dead SSDs and HDDs all over the show.
It's a 3 line now because I didn't need the spare molex plug and i had another cable, but that shouldn't make any difference. I also have an SSD and an HDD on a splitter, so the fan controller can't be changing the voltage otherwise my drives would be screwed.
I wouldnt think that the voltage would be a problem because the PSU is a regulated power supply it should put out constant voltage regardless of the load ( at least until its overloaded) Fans do however cause a lot of noise that you might be able to see in the LEDs but that wouldn't explain why not all of them work sounds like the Leds might be faulty but it dosnt look like there is a lot to them. Do they have a little box between the lights and the power connector ?
meant the leds. leds when @ <12v wont work correctly.
if leds dont run as they should off a dedicated 12v cable then A) they're faulty (test in another system to be sure) or B) line is overloaded which would take a shit load of devices for this to occur.
maybe it is defective then if you have another PSU around you could use the paper clip trick to power it up and test the LEDs with nothing else connected.