Difference between revisions of "MCookie-LED Matrix"

Outline

mCookie-LED Matrix module integrate 6 WS2812 LEDs, each of which has an IC control chip. Them are controlled by a single bus, and the lighting status of each of them is controlled by an I/O port, which can be used as a full-color module to provide light source.

Features

• Single bus control, only need one I/O port to control, and complete data receiving and decoding;
• Built-in IC control, serial cascade interfaces which can be cascaded controlled;
• The three primary color of each pixel can realize 256 level light display, and complete 16777216 colors whole true display, and the scanning frequency is no less then 400Hz/s;
• Built-in power on reset circuit and power down reset circuit.

Specification

• Electric specification:
  • Working voltage: 5V;
  • Controlling light source: WS2812*6.
• Technical parameters:
  • WS2812 type;
  • Gray of three primary colors: adjustable 256 level;
  • Size of LED: 5mm*5mm;
  • The speed of data sending can reach 800Kbps.
• Connection:
  • Direct adsorption on other modules;
  • Connect to A0 interface by default.

Document

File:Ws2812.pdf

Further reading on the neopixel library: https://learn.adafruit.com/adafruit-neopixel-uberguide/arduino-library

Development

Equipment

• Other equipment
  • USB cable*1

Preparation

• Connect CoreUSB with LED Matrix, and link them to the computer with USB cable.

Experiment 1：Light up the Lights

• Open Arduino IDE, delete the original code in the IDE, and copy the following code to IDE.

#include <Adafruit_NeoPixel.h>

#define PIN A0   //led control pin
#define PIN_NUM 6 //Number of leds allowed to be connected

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIN_NUM, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
}

void loop() {
  strip.setPixelColor(0, strip.Color(255, 0, 0));//Red
  strip.show();
  delay(1000);
  strip.setPixelColor(1, strip.Color(0, 255, 0));//Green
  strip.show();
  delay(1000);
  strip.setPixelColor(2, strip.Color(0, 0, 255));//Blue
  strip.show();
  delay(1000);
  strip.setPixelColor(3, strip.Color(255, 255, 0));
  strip.show();
  delay(1000);
  strip.setPixelColor(4, strip.Color(0, 255, 255));
  strip.show();
  delay(1000);
  strip.setPixelColor(5, strip.Color(255, 0, 255));
  strip.show();
  delay(1000);
}

• Choose the right board and COM port

• Compiling
  • When compiling, it will prompt to save the project, and the players can save to your folders named by yourselves.
• Download
  • After the success of the compilation, you can directly download. Prompting download successfully means that you have completed the download.

• The result is there will be one light shows every 1s, until all of them light.

Program Description

• Use "Adafruit_NeoPixel.h" library to drive lights;
• "#define PIN A0" defines the controlling LED pin, which can be transferred out through the Hub, and can be changed be the users;
• "#define PIN_NUM 6" defines the number of leds allowed to connect;
• "strip.setPixelColor(i, strip.Color(R, G, B));" function declaration:
  • i: Which light. Starting from 0 to be taken as the first light.
  • R: The red value（0-255）;
  • G: The green value（0-255）;
  • B: The blue value（0-255）.
• "strip.show();" shows LED display.

Other Controlling Methods

• Reference code: LED_Matrix

Application

• LED full-color light-emitting word LED string, full-color module, LED full-color soft light bar and hard light bar, and LED guardrail tube.
• LED point light source, LED pixel screen, LED special-shaped screen, all kinds of electronic products, and electrical equipment entertaining diversions.

Purchase

History

Gallery

Video