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WS2812B - Hardware details

Pinout​

Pinout

Click here for a high-resolution image of the pinout.

Pinout

Click here for a high-resolution image of the pinout.

Pinout

Click here for a high-resolution image of the pinout.

❌
The pinout images for the Ring12 and Ring24 versions haven't been generated yet! We're working on it!

Pin details​

ℹ️
Ignore the DIN and DOUT pins if using the Pixel version!
Pin MarkingPin NameDescription
VCCPower (+5V)Supplies power to the LED strip. Typically powered by a 5V source.
GNDGroundCommon ground for both the power and signal.
DINData InputInput pin for receiving the data signal from the microcontroller.
DOUTData OutputOutput pin for passing the data signal to the next LED (in a chain).
ℹ️
The DIN pin is used to receive data from a microcontroller such as an Arduino or Raspberry Pi. The DOUT pin passes the data to the next LED in a daisy-chained setup.
⚠️
Ensure a stable 5V power supply to avoid damage to the LEDs!

Dimensions​

  • LED Dimensions: 5mm x 5mm (per LED chip)
  • LED Pitch (spacing between LEDs): 10mm
  • Stick10 version
    • Screw Holes: Designed for M3 screws (3.2 mm diameter)
    • Dimensions: 80 x 10 mm (3.15 x 0.4 inch)
  • Pixel version
    • Dimensions: Diameter of 10mm (0.4 inch)
  • Ring7 version
    • Dimensions: Diameter of 23mm (0.9 inch)
  • Ring12 version
    • Dimensions: Outer diameter of 44mm (1.6 inch)
  • Ring24 version
    • Dimensions: Outer diameter of 67mm (2.6 inch)
  • Soldered boards are LEGO compatible! 🧱

Power and Voltage Requirements​

The WS2812B operates with a 5V supply, which is typically delivered to the VCC pin. It can handle up to 60mA per LED at full white (RGB) brightness, and power consumption will depend on the color and brightness settings used.

  • Operating Voltage: 5V DC
  • Current Consumption: Up to 60mA per LED at full brightness (white color)
  • Power Supply Recommendation: Use a 5V DC power supply that can provide sufficient current for the total number of LEDs in the chain.
⚠️
Ensure that the power supply can handle the total current draw. For example, a 1-meter strip with 30 LEDs at full brightness can draw up to 1.8A of current.

Hardware repository​

Schematics, KiCad files, Gerber files, and more can be found in the GitHub repository:

Smart LED WS2812B Stick10 Hardware Design

GitHub hardware repository for this product

Smart LED WS2812B Pixel Hardware Design

GitHub hardware repository for this product

Smart LED WS2812B Ring7 Hardware Design

GitHub hardware repository for this product

The hardware repository contains everything you need to understand, modify, or manufacture the board. The different output folders are versioned. You can check which board version you have specifically by finding the version mark on the PCB.

Below is an overview of the available files.

CAD files​

We use KiCad, an open-source PCB design tool. You can open and edit the .kicad_pro project file, which includes both the schematic and PCB layout.

The PANEL files are used internally for production.

Schematic​

The OUTPUTS folder contains the schematic in .pdf format, exported from KiCad.

BOM (Bill of Materials)​

The bill of materials (BOM) is provided in two formats:

  • A standard .csv table, listing all components, part numbers, and values.
  • An interactive BOM (.html) that visually highlights each component on the PCB, making it easy to locate and reference parts.

3D files​

A 3D model of the PCB is available in .step format, allowing you to inspect the board design in CAD software.

Gerber files​

Gerber files are essential for PCB manufacturing, as they contain precise instructions for each layer of the board. The repository includes standard Gerber outputs in a .zip file, such as:

  • Copper layers (.Cu.gbr) – Defines the traces and pads on the board.
  • Solder mask layers (.Mask.gbr) – Specifies the protective solder mask.
  • Silkscreen layers (.Silkscreen.gbr) – Contains text and component markings.
  • Paste layers (.Paste.gbr) – Used for stencil fabrication in SMD assembly.
  • Drill files (.drl) – Provides drilling coordinates for vias and holes.
  • Board outline (.Edge_Cuts.gbr) – Defines the shape of the PCB.
  • Gerber job file (.gbrjob) – Describes the set of Gerber files used for production.

These files are ready for fabrication and can be used in PCB manufacturing.

Compliance​

The Compliance section includes important regulatory and safety documentation for this product. These files ensure compliance with relevant industry standards and legal requirements.

  • CE – Certification document confirming compliance with EU safety, health, and environmental requirements.
  • UKCA – UKCA (UK Conformity Assessed) certification for the UK market.
  • Safety Instructions – Safety guidelines and precautions in English and in German.
  • Info.txt – Contains product details such as SKU, country of origin, HS tariff code, and barcode.