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Old 11-08-2018, 02:41 PM
SpeedyV SpeedyV is offline
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Hi. That picture you posted above was posted by me when I was wiring up generic 5V WS2812B addressable 5050 RGB LED Strips to my Commander Pro (CoPro) and Lighting Node Pros (NoPro).

As DevBiker said, the CoPro and NoPro LED ports have a current limit of ~2.0 Amps. The way around that is to not power the LEDs from the CoPro or the NoPro LED ports.

There are 3 connections to the LED strip - +5VDC, Data, and Ground. Normally, the +5VDC pin connects to the +5VDC power pin of the CoPro (or NoPro) LED port. The Data pin connects to the Data pin, and the Ground pin connects to the Ground pin. If you are not sure which is which , carefully measure between the LED port pins. When your DC volt meter says +5VDC, the black lead is on the Ground pin and the Red lead is on the +5VDC Power pin. The other pin is the Data pin.

To get around the current limitations of the CoPro / NoPro, do NOT connect the LED strip +5VDC Power pin to the CoPro /NoPro +5VDC Power pin. Instead, connect the LED strip +5VDC Power pin directly to your system power supply. If you use a "Peripheral" power output and a standard 4-pin Molex power connector, the current limit will be higher than the 2 Amps of the CoPro / NoPro.

Connect the LED Strip Data pin to the Data pin of the CoPro / NoPro LED Port. Then connect the Ground pin to the Ground pin of the CoPro / NoPro LED Port AND the Ground in the 4-pin Molex connector.

It sounds more complicated than it is. The idea is that the CoPro /NoPro only has to provide DATA to the LED strip. The LED ports do not have to supply the drive current to the LEDs. So you get the Data from the CoPro / NoPro but the +5VDC (and the LED drive current) comes directly from the system power supply. I hope this is making sense.

Then you are up against the limit imposed by the CoPro and NoPro firmware. IIRC, Corsair has arbitrarily limited this to 96 LEDs. That is because the worst case, in spec load is 6 x LL-series fans that have 16 LEDs each. 6x16=96 LEDs. This is why (I think) the firmware limit is 96.

Remember - measure twice and solder once.

Good luck!

edit to add - I see DevBiker has identified the pin locations on a CoPro / NoPro LED Port - Pin 1 is +5V power, Pin 2 is Data Out and Pin 3 is Ground. Pin 1 is marked on the connectors with a triangle. If you look at the connector on the lighting channel, pin 1 is on the right.

Use a multimeter to make sure that you have it right.

Last edited by SpeedyV; 11-08-2018 at 02:44 PM.
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