ErnieHorning: Created Smart Pixels page

2026-07-24T22:42:21Z

Created Smart Pixels page

New page

{{DISPLAYTITLE:Smart Pixels}}

= Smart Pixels =

'''Smart pixels''' are individually addressable RGB LED modules that contain both one or more LEDs and an integrated control circuit. Unlike traditional Christmas lights, each smart pixel can display a different color and brightness, allowing complex animations, images, and effects to be created.

Smart pixels have become the standard lighting technology used in modern animated Christmas displays.

[[File:Smart Pixels.png|center|900px|thumb|Figure 1 – Common smart pixel types used in DIY Christmas lighting.]]

== Overview ==

Each smart pixel contains:

* Red, green, and blue LEDs
* An integrated driver IC
* Data input
* Data output
* Power connections

The controller sends digital data through the pixel string. Each pixel reads its own data, displays the requested color, and passes the remaining data to the next pixel.

== How Smart Pixels Work ==

Pixel controllers transmit a continuous stream of color data.

Each pixel:

# Receives the incoming data.
# Stores the first color values intended for itself.
# Passes the remaining data to the next pixel.

This process repeats until every pixel has received its own color information.

== Common Pixel Types ==

Popular smart pixel families include:

* WS2811
* WS2812B
* SK6812
* GS8208
* TM1814
* UCS2904

Each has different electrical characteristics and features, but all operate in a similar manner.

== Pixel Packages ==

Smart pixels are available in many physical styles, including:

* Bullet pixels
* Square pixels
* Seed pixels
* Pebble pixels
* Strip lighting
* Modules
* Pixel nodes

Different package styles are selected based on the application rather than performance.

== Voltage ==

The most common operating voltages are:

* 5 Volts
* 12 Volts

Each has advantages and disadvantages regarding wiring, power injection, and efficiency.

== Wiring ==

Most smart pixels use three wires:

* Power (+V)
* Data
* Ground

Some pixels include an additional backup data wire or other features.

== Power Injection ==

As pixel counts increase, voltage drop becomes more significant.

Long strings may require:

* Power injection
* Larger wire sizes
* Multiple power supplies

Proper power distribution is essential for reliable operation.

== Pixel Density ==

Pixels are available in many spacings including:

* 1 inch (25 mm)
* 2 inch (50 mm)
* 3 inch (75 mm)
* 4 inch (100 mm)

The appropriate spacing depends on the viewing distance, prop size, and desired resolution.

== Choosing Smart Pixels ==

Consider:

* Voltage
* Pixel spacing
* Package style
* Wire color
* Wire gauge
* Waterproof rating
* Mounting method
* Controller compatibility
* Cost

== Christmas Lighting Recommendations ==

For most hobbyists:

* 5V pixels provide the best color consistency.
* 12V pixels reduce power injection requirements on long runs.
* Bullet pixels remain the most versatile choice.
* Seed pixels are excellent for compact props and matrices.
* Pebble pixels provide a low-profile appearance for many decorative applications.

== Related Articles ==

* [[Pixel Controllers]]
* [[ESP Controllers]]
* [[ESP8266 Overview]]
* [[ESP32 Overview]]
* [[Power Injection]]
* [[Power Supplies]]
* [[Pixel Wiring]]
* [[Bullet Pixels]]
* [[Seed Pixels]]
* [[Pebble Pixels]]
* [[Pixel Strip]]
* [[WS2811]]
* [[WS2812B]]
* [[GS8208]]
* [[TM1814]]
* [[SK6812]]
* [[UCS2904]]
* [[DDP]]
* [[E1.31]]
* [[xLights]]

Smart Pixels - Revision history

ErnieHorning: Created Smart Pixels page