Hello there! Need a little help with WS2811 RGB LED Strip.

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Hello there! Need a little help with WS2811 RGB LED Strip.
It doesn’t work correctly, I can’t understand in what a problem, in video a work example.
Used led strip - http://www.ebay.com/itm/WS2811-5050-RGB-LED-Strip-150-300-Leds-90-60-30LED-M-Individual-Addressable-12V-/262009823883?var=&hash=item3d0100a28b
Sorry for my english. I hope somebody will explain to me what i do wrong.

7aeb6c962475a0909cd4071b3495fc3b.gif

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i am confused because the ebay listing says “12 volt”

  • are you powring with 12 Volt?
  • what are you using to control them? An Arduino? Powered with 5V?
  • do you use common ground?

I have never heard about 12V 2812 strips, but lets just assume they exist, then i guess also the data line needs to be on that level.

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yes, 12V
Arduino Uno Clone, powered by USB
i don’t really know :slight_smile: i use a pc power block for led strip @Sebastian_Stuecker

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@Sebastian_Stuecker
see video, thats all what i have

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Did you connect the GND of the Arduino to the GND of the LED strip? I can’t see from the video, but that must be done and is important.

I, also, am surprised about the “12v” strip. Usually all of those strips (WS2812B etc) are 5v.
There are other 12v strips (TM1809, e.g.), but 2811/2812 are usually 5v.

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There is not much to find about 12V with 2811 but it seems there are strips which take 12V but have 3 pixels per IC. Maybe that explains this behaviour seen on the video

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Ahhhh! THOSE strips!
Yeah I’ve encountered those. And yes. 12v.

Every three led clusters are controlled by just on chip, so the smallest you can control is a group of three.

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Thank you! Just conected GND on Arduino to the GND of LED strip. @Mark_Kriegsman

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Did that help or change things?

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@Mark_Kriegsman
All working good! Looks very nice :slight_smile: