WS2811b LED Strip (5V)

If you’ve ever dreamed of having your own light show synchronised to music, creating ambient mood lighting that changes with a tap, or building a Christmas display that stops traffic – the WS2811b LED Strip is your ticket to lighting nirvana.

What is a WS2811b LED Strip?

The WS2811b (often called WS2812B or simply “addressable LEDs”) is a game-changer in the world of decorative and programmable lighting. Unlike traditional LED strips where every LED is the same colour, each LED on a WS2811b strip can be controlled individually. That means 30, 60, or even 144 pixels per metre, each capable of displaying any colour in the RGB spectrum.

Think of it as the difference between a single light switch and a pixelated display. One gives you on or off. The other gives you complete creative control.

Technical Specifications

• Voltage: 5V DC (also available in 12V variants)
• LED Density: 30, 60, or 144 LEDs per metre
• Control Protocol: Single data line (WS2812B protocol)
• Colour Range: 16.7 million colours (24-bit RGB)
• Waterproof Options: IP30 (non-waterproof), IP65 (silicone coating), IP67 (silicone sleeve)
• Current Draw: Up to 60mA per LED at full white (plan your power supply accordingly!)

Why We Love Them

Individual Pixel Control

This is the magic. Each LED has its own tiny controller chip embedded right next to it. You send data down the strip, and each LED reads its portion and passes the rest along. Want LED 1 to be red, LED 2 to be blue, and LED 3 to be rainbow cycling? Done.

Easy Integration

Three wires – power, ground, and data. That’s it. Connect them to a microcontroller like the NodeMCU, load up some code, and you’re away. No complex wiring, no multiplexing headaches.

Home Assistant Ready

This is where things get exciting for smart home enthusiasts. The WS2811b integrates beautifully with Home Assistant through platforms like WLED. Once connected, you can:

• Control colours and effects from your phone
• Integrate with automations (turn on at sunset, flash when the doorbell rings)
• Sync with music using services like xLights
• Create holiday displays controlled from your dashboard

Popular Use Cases

Christmas Light Shows

Check out our LED Tunnel project – this was built entirely with WS2811b strips. The ability to sequence lights to music transforms your front yard into a professional-looking display.

Ambient Room Lighting

Behind-the-TV bias lighting, under-cabinet illumination, or ceiling accents. Set scenes for movie night, parties, or bedtime – all automated through Home Assistant.

Custom Projects

From our Custom LED Star to ambitious Matrix displays, these strips are the foundation of countless creative projects.

Pro Tips

• Power Injection: For strips longer than 1-2 metres, inject power at multiple points to prevent voltage drop (which causes flickering and colour shifts).
• Level Shifters: If your microcontroller runs at 3.3V (like the ESP8266), use a logic level shifter to boost the data signal to 5V for reliable operation.
• Start Small: Buy a 1-metre strip first and experiment. Once you’re comfortable, scale up.
• Waterproof Care: IP65/67 strips can yellow over time in direct sunlight. Consider IP30 for indoor projects.

Price Range & Where to Buy in Australia

Prices vary depending on LED density and waterproof rating:

• AliExpress: From $5-15 AUD per metre (allows 2-4 weeks shipping)
• Australian Retailers: $15-30 AUD per metre (Core Electronics, Little Bird Electronics)
• Bunnings: Occasionally stocks addressable strips, but selection is limited

We typically order from AliExpress for project quantities – search for “WS2812B” or “WS2811 addressable LED strip”. The savings are significant if you can wait for shipping.

Pros & Cons

Pros

• Individual pixel control = unlimited creativity
• Simple three-wire connection
• Excellent Home Assistant integration via WLED
• Large community and abundant tutorials
• Available in various lengths and densities

Cons

• 5V strips require careful power planning
• Data signal can be finicky over long distances
• Quality varies between sellers (check reviews!)
• Slightly more complex than traditional LED strips

The Verdict

If you’re serious about programmable lighting, the WS2811b is the industry standard for a reason. It’s affordable, well-supported, and the creative possibilities are genuinely endless. Whether you’re building a simple mood light or a full-blown Christmas spectacular, this strip delivers.

Buy yours today at AliExpress or support local retailers like Core Electronics if you need it faster.