Crowbits-RGB Matrix

Description¶

The RGB Matrix module is an 8 * 8 matrix display module composed of 64 rgb led lamp beads. It can respond to changes in input signals in monochrome, full-color, gradual, and horse racing modes, and can also display simple graphics.

Features¶

• Low power consumption
• Easy to use

Specification¶

• Operating Voltage: 3.3V DC
• Dimensions: 56(L)*56(W)*13(H)mm

Usage¶

The following sketch demonstrates a simple application of the module.

1. You need to prepare a Crowbits motherboard, such as Crowbits-UNO board.

2. Connect the module to the D11 interface of the Crowbits-UNO board, as shown in the figure:

3. Download the library FastLED-3.2.10. Unzip and put it in the libraries file, for example: C:\Program Files (x86)\Arduino\libraries.

4. Upload the following code to the Crowbits-UNO board.

#include <FastLED.h>
#define NUM_LEDS 64

CRGBArray<NUM_LEDS> leds;

void setup() { FastLED.addLeds<WS2812B,11,GRB>(leds, NUM_LEDS); }

void loop(){ 
  static uint8_t hue;
  for(int i = 0; i < NUM_LEDS/2; i++) {   
    // fade everything out
    leds.fadeToBlackBy(40);

    // let's set an led value
    leds[i] = CHSV(hue++,255,255);

    // now, let's first 20 leds to the top 20 leds, 
    leds(NUM_LEDS/2,NUM_LEDS-1) = leds(NUM_LEDS/2 - 1 ,0);
    FastLED.delay(33);
  }
}

5. After the upload is successful, you can see the phenomenon that the RGB lights alternate from red, green and blue.