What are the pins on WS2812B strips?

iCantThinkOfAName · April 17, 2018

Hello,

Looking to buy some WS2812B LED strips to use with my arduino. These ones, https://www.banggood.com/1M-Non-Waterproof-WS2812-WS2812B-RGB-30-LED-Strip-Light-Individually-Addressable-5V-p-1145875.html?rmmds=search&cur_warehouse=CN

However on most guides I can see that there is three connectors, the digital control, +5v and ground. Whereas on this one there is them three, as well as an extra two. What are these for and are they needed?

Thanks,

Max

Pixel5 · May 4, 2018

On 17.4.2018 at 9:25 PM, Pangea2017 said:

GND, VCC, DATA

and the second connector is a additional GND, VCC

the third a "line out" with GND, VCC, DATA

this is correct but i just want to highlight why these connections are like this and what they are used for.

on the 3 pin connector you usually get the matching counter piece with the LED strip and this goes to the Arduino or whatever else you use to control der LED strip.

This connector then supplies the same power to the arduino that is used for the power strip and gets the power from the two cables that are directly on the strip.

the last connector on the end is so you can daisy chain multiple strips into one.