What’s the difference between the 4-pin and 6- pin point-controlled pixel lights?

Views: 0     Author: Site Editor     Publish Time: 2021-05-06      Origin: Site

LED pixel point light is a controllable point light source product that can replace certain specifications of display screens to achieve the effect of dots and surfaces through pixel color mixing. The light source adopts high-brightness full-color LED, and the package of the lamp bead adopts a fully sealed waterproof design, which meets the IP65 protection level. The overall product is a string of lights, the light source can be controlled at a single point, and the light sources are connected by a four-core silicone flat cable. The length can be customized, and the installation is flexible and simple. With the control system, it can be applied to any plane, curved surface, or irregular surface.

Technical specifications of LED pixel point lights:

technical parameters

Classification of LED pixel lights:

Classified by color: Monochrome LED pixel light and Multi-color LED pixel light.

The monochromatic LED pixel lamp is composed of 4 LEDs. Because it has grayscale and display mode changes, it is very suitable for monochromatic display signs and monochromatic LED display boards. The high-brightness monochromatic LED pixel lamp is composed of 8 red monochromatic LEDs.

The multi-color LED pixel light is composed of two red LEDs, a pure green LED and a blue LED. It is very suitable for making full-color display cards, because full-color display cards have both color and grayscale. The change, so it can display information like a display screen, and the cost is much lower. The high-brightness LED pixel light consists of 4 LEDs, two green LEDs and two blue LEDs.

LED pixel point light

Classified by the number of pins: 

Usually divided into 4-pin point-controlled pixel lights and 6-pin point-controlled pixel lights.

4-pin point-control pixel lights:

Ground wire--connect to the ground bus in the power supply circuit

Data input--connect your control device or the previous pixel light data output

Data output--connect to the data input of the next pixel light

+5V/+12V--Connect the +5V/+12V bus in the power supply circuit

The transmission used by these pixels is based on the Standard DMX512 Control Protocol.

Your control device will send a sequence signal at a predefined speed (30 frames / sec, taking K-8000C controller as an example). The sequence signal is an ordered list of bytes, and each sequence represents the brightness value of the red, green and blue pixel beads in each pixel lamp. The arrangement of bytes being sent to control your pixel lights.

This point controlled pixel light will become a limiting factor when used in large installations. Especially when your control equipment needs to transmit data to a very long series of pixel lights. 

The solution is to split your device into several groups of parallel output circuits. For example: if you have a grid array consisting of 100 pixels wide and 100 pixels high in series, this will cause the update and refresh frequency of all pixels to be lower. If you have a driver that can drive 10 sets of screen-linked outputs, you can divide your device into one module to increase the frame ratio.


Six-pin (SPI driver) point-controlled pixel lights:

Ground wire-connect to the ground bus in the power supply circuit

Clock input-serial clock signal input

Data input-serial data signal input

Clock output-sequence clock output inverted

Data output-serial data signal output

+5V-Connect the +5V bus in the power supply circuit

Driving these pixels requires a serial communication protocol like DMX512, which can be easily used and implemented in most programming languages.

Start grid (32-bit): This grid tells the pixel light data is being input. It will be preset to 32 x 0's

Pixel light 1 total brightness frame (8 bits): This grid allows you to control the total brightness of this light with win32 hexadecimal system. 223 is the lowest value of brightness and 255 is the highest value of brightness.

Pixel light 1 blue (8 bits): A value from 0 to 255 controls the blue level of the pixel light

Pixel light 1 Green (8 bits): A value from 0 to 255 controls the green level of the pixel light

Pixel light 1 Red (8 bits): A value from 0 to 255 controls the red level of the pixel light

Final grid (32-bit): This grid is 32 x 1s and will be sent to tell all the pixels that the light needs to use the received data. This block will be sent last after all point-controlled pixel lights have been sent data.

These pixel lamps can be used in large devices because they are driven at a very high frequency.


Application of LED pixel lights:

The LED pixel lights is made of low-power LED as the light source, using professional waterproof connector multi-stage connection combination, and imported silica gel for special sealing and waterproof treatment. The product has excellent performance and long life, suitable for various indoor and outdoor installations.

LED point pixel lights have the characteristics of small size, light weight, low power consumption, flexible and convenient installation, etc. They are widely used in advertising decoration lighting projects, urban landscape lighting projects, municipal lighting projects, various straight or curved contours, and special-shaped buildings. The surface light display project can replace smart lamps such as a certain specification display screen.

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