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I know this is probably a little bit basic but I need SERIOUS help with using my new led strip. You can see here the type of strip I have, and the packet.

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It's difficult because it looks slightly different to all the other ones I've seen in tutorials so I don't really know where to start now...All I've done is cut off the ends of the wires already on there and replace them with the regular pins that I can use on the Arduino and breadboards too. Where do I have to go from here? Are there any code libraries I need to use?

  • My bet would be that these are WS2812B LED strips. They should be compatible with Adafruit Neopixels. – Paul Apr 8 '16 at 12:15
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As far as I understand the DAT (Green wire) is a digital data wire. Try the following: 1. VCC to +5V pin 2. GND to GND pin 3. DAT to 2 Digital pin.

Then try to change the state of the 2 digital pin from high to low and see if anything happens... That's what I would start out with.

  • Interesting result, about 3 of the lights came on, and were all different colors, then I adjusted the wires and they went off, and still are off... – mr-matt Apr 8 '16 at 9:42
  • Worst case scenario- the board did not have resistors and you just burned them down. Do you have schematic of your led strip? – L2PA Apr 8 '16 at 9:45
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    @L2PA these LED strips have "constant current" drivers built in. My bet would be them being these https://www.adafruit.com/datasheets/WS2812B.pdf or https://www.adafruit.com/images/product-files/1138/SK6812%20LED%20datasheet%20.pdf – Paul Apr 8 '16 at 12:17
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    @L2PA Plus, they are "Digital LED strips" so changing the state of digital pin 2 isn't going to do a lot, unless you time it exactly right. I also wouldn't recommend driving an analog LED strip directly from Arduino.. – Paul Apr 8 '16 at 12:23
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    You're somewhat in luck, Adafruit has an "Neopixel uberguide" which is an extensive document on how to use these type of strips. They also have a library which should make programming easier. – Paul Apr 8 '16 at 19:18
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I had the same issue, in every example you see wiring diagrams with 3 wires, and my ledstrip had 5 wires, but it seems the two red wires (5v) are connected and the two white wires (gnd) are connected to eachother, so basicly you have 3 wires like in every wiring diagrams what's out there

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