ACROBOTIC WS2812B Strip with 30 RGB LED/m (White PCB, IP68 Waterproof) | NeoPixel-Compatible


Regular price $13.50

These flexi-strips are without a doubt the most convenient, cost-effective option for using the WS2812B RGB LEDs in any lighting project. The tiny 5mm × 5mm (also known as 5050) RGB LEDs are mounted on a flexible, white, slim PCB that can be cut to any length: from a 1-LED 10mm × 33mm piece, up to a 10mm × 1m continuous piece. You are not limited to a 1 meter strip, 2 (or more) separate strips can be interconnected using the included 3-Pin JST connector Male/Female pair. The maximum length of the strip is only determined by the number of LEDs your controller can handle (more info below). Each WS2812 on the strip includes 3 super bright LEDs (Red, Green, and Blue) and an embedded driver circuit (WS2811) that only requires one data input to control the brightness and color of the 3 LEDs.

Weatherproof packaging

The flexible PCB and WS2812 RGB LEDs are packaged inside a 12.5mm-wide, translucent, silicone sleeve that has an IP65 waterproof rating. Given that we want to offer you the option of cutting the strips to any desired length, we also sell additional end caps separately (2 of them are already included with each strip we send you), which allow the strips to be sealed up again after cutting.

Features

  • Sold in 1 meter increments!
  • Multiple strips can be interconnected using the included 3-pin JST connector Male/Female pair or by soldering their respective ends together
  • 30 individually addressable RGB LEDs (WS2812) per meter
  • IP65 waterproof rated, translucent, flexible silicone package
  • Additional wiring included (power and ground) for easily connecting an external power supply
  • Flexible PCB and silicone sleeve can be cut into pieces as small as 10mm × 33mm
  • Internal signal reshaping amplification circuit (inside embedded WS2811)

Requirements

Power

In order to drive 30 RGB LEDs (for a 1 meter strip) at maximum brightness, the power supply needs to source 1.75–1.8A@5V (9 Watts). As most modern computer ports have very robust current-limiting circuitry, you can run a strip from a microcontroller board like the Arduino or ESP8266 family of boards powered from a computer's USB port. However, after putting matters into perspective—a single WS2812 package contains 3 LEDs (R, G, and B) that require 20mA each to operate properly (Forward Current specification), the 20mA × 3 × 30 = 1.8A requirement is a lot higher than what a standard USB port can source: 500mA max—we strongly recommend using an external power supply.

Communication Speed

The WS2812 package includes a Data In and a Data Out pin that allows them to be connected sequentially. This means that we truly need nothing but one data line to control several of them (in addition to Power and Ground). However, at the expense of needing only one data line for control, there comes a demand for highly precise timing in the signal that we provide. For this reason, a real-time microcontroller (e.g., AVR, Arduino, PIC) is required. With some tweaking of the stock firmware, it is possible to even use a Linux-based microcomputer or an interpreted microcontroller such as the Netduino or Basic Stamp.

Memory

Because the LEDs are connected serially, we need to specify the display data for each and everyone of them. The display data need to reside in the controller's RAM so that they can be read and written with the timing (speed) precision that is needed. Most Arduino Uno R3 programs leave about 400+ Bytes of RAM unused, and each WS2812 needs 24 bits of data (8 bits for each R, G, and B value). This implies that up to ~144 WS2812 LEDs could be driven by a 32KB microcontroller like the one on the Arduino Uni. Other microcontroller boards such as the Arduino Mega or ESP8266 have more RAM, and consequently can drive more LEDs.

Strip length and connectors

The strips are sold in 1m increments. Silicone end caps and 3-Pin JST connector Male/Female pair are included with each strip! Each flexible PCB has 0.1"-spaced, 3-pin pads at both ends that can be soldered onto if a strip is cut. In addition, two strips can be interconnected using the included 3-Pin JST connector Male/Female pair.

Please note that these awesome LEDs are manufactured by WorldSemi, and are known in the Maker community as NeoPixels.