RGB Splitter

[OsuMasterz]

So I'm trying to run 128 LEDs on an addressable header of a motherboard, but I need to run the voltage from the power supply to prevent something bad from happening.

I found this diagram but I'm not sure what to get to make it.

https://gyazo.com/02eec3dd5f34a455182d76d0b23465de

[W-L]

43 minutes ago, OsuMasterz said:

So I'm trying to run 128 LEDs on an addressable header of a motherboard, but I need to run the voltage from the power supply to prevent something bad from happening.

I found this diagram but I'm not sure what to get to make it.

https://gyazo.com/02eec3dd5f34a455182d76d0b23465de

I'd recommend to isolate the 5V line from the pinout of the motherboard as to not back feed power to it. For what you need to do so you can actually get 4 pin RGB connectors but will need to solder them in accordance to your motherboard's 3 pin header output as there is a spacing. With that you can tap in the ground and directly the 5V power line bypassing the motherboard. 

https://www.amazon.com/ZITRADES-Light-Strips-Female-Connector/dp/B00D0Y8SG6/ref=pd_bxgy_267_img_3?_encoding=UTF8&pd_rd_i=B00D0Y8SG6&pd_rd_r=554TQ70PGTW47P75BJX1&pd_rd_w=g70Il&pd_rd_wg=lYYfp&psc=1&refRID=554TQ70PGTW47P75BJX1

Spoiler

 

This would be similar to what you would want but jut through an ardunio.

[OsuMasterz]

7 hours ago, W-L said:

I'd recommend to isolate the 5V line from the pinout of the motherboard as to not back feed power to it. For what you need to do so you can actually get 4 pin RGB connectors but will need to solder them in accordance to your motherboard's 3 pin header output as there is a spacing. With that you can tap in the ground and directly the 5V power line bypassing the motherboard. 

https://www.amazon.com/ZITRADES-Light-Strips-Female-Connector/dp/B00D0Y8SG6/ref=pd_bxgy_267_img_3?_encoding=UTF8&pd_rd_i=B00D0Y8SG6&pd_rd_r=554TQ70PGTW47P75BJX1&pd_rd_w=g70Il&pd_rd_wg=lYYfp&psc=1&refRID=554TQ70PGTW47P75BJX1

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This would be similar to what you would want but jut through an ardunio.

Update:

I think something like this splitter is built into the LED Strips I found, but I'm not completely sure.

LED Strips

[W-L]

1 hour ago, OsuMasterz said:

Update:

I think something like this splitter is built into the LED Strips I found, but I'm not completely sure.

LED Strips

Those use the standard JST 3 pin connectors it just needs to be adapted to the standard RGB type connectors for the motherboard. That split they use works but will also back feed 5V into the motherboard which isn't ideal, you want it so the 5V line is isolated or has say a diode inline to prevent that. 

[OsuMasterz]

12 minutes ago, W-L said:

Those use the standard JST 3 pin connectors it just needs to be adapted to the standard RGB type connectors for the motherboard. That split they use works but will also back feed 5V into the motherboard which isn't ideal, you want it so the 5V line is isolated or has say a diode inline to prevent that. 

Could I like cut the 5V to the motherboard off or that not ideal

[W-L]

2 minutes ago, OsuMasterz said:

Could I like the 5V to the motherboard off or that not ideal

The 5V on the board can't be turned off, the worry is if it back feeds it may damage the power delivery components, that's why as a precautionary measure a diode would be the easiest way to prevent that from occurring.

[OsuMasterz]

3 minutes ago, W-L said:

The 5V on the board can't be turned off, the worry is if it back feeds it may damage the power delivery components, that's why as a precautionary measure a diode would be the easiest way to prevent that from occurring.

Ah ok, I will try to do that then.