MADRIX Forum

Hi dears, I have 5 units of nebula and I need to use the 8 universes of each one but I do not know how to connect them, I have tried serial and parallel connection but only the universe 1 works on port 1 and universe 5 on port 2. I Tested with different software but with all the same thing happens, I need your help. Thank you! and sorry for my English

Control: Nebula
Led Strips WS2811 30Led/mt, 1 pixel = 3 leds
PSU Mean Well 6.5 A

Hey guys,
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We followed up to support this request via e-mail. Now we fixed the problem.
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The problem was based on several things:
1.) There was a little misstake in the connection of the data and the power wires. Everytime when you connect LEDs to a power supply separately from the NEBULA you have to connect the V+ and the GND from the power supply and the Data and GND from the NEBULA. That means the LED stripe has connected the GND to both.
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2.) Connection of the LED stripes. If you want to control every pixel separatly with the NEBULA you have to connect the stripes serial. That means the output of stripe 1 has to be connected with the input of stripe 2. If you connect for instance 2 stripes in parallel to the output of the NEBULA, the output signal will be splitted.
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3.) Using of power supplies. A power supply of 6.5A can feed up to 108 LED pixels of a stripe. Because one pixel will need in the worst case up to 20 mA. That means 6500mA / 60 = 108. If you want to control more than 108 pixels with such a power supply, you have to feed in new power supply after 108 pixels.