Ks0139 keyestudio EASY plug I2C 8x8 LED Matrix

From Keyestudio Wiki
Jump to navigation Jump to search

EASY plug I2C 8x8 LED Matrix


thumb

Introduction

What's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix. This matrix uses a driver chip that does all the heavy lifting for you: They have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface.
Note: this module needs to be used together with EASY plug control board.


Specification

  • Interface: Easy plug
  • Supply voltage: 4.5V-5.5V
  • Maximum display: 16*8
  • Size: 53*32mm
  • Weight: 6g


Connection Diagram


thumb


Sample Code

Libraries Download：[1] 

#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include "Adafruit_GFX.h"

#ifndef _BV
  #define _BV(bit) (1<<(bit))
#endif


Adafruit_LEDBackpack matrix = Adafruit_LEDBackpack();

uint8_t counter = 0;

void setup() {
  Serial.begin(9600);
  Serial.println("HT16K33 test");
  
  matrix.begin(0x70);  // pass in the address
}

void loop() {
  // paint one LED per row. The HT16K33 internal memory looks like
  // a 8x16 bit matrix (8 rows, 16 columns)
  for (uint8_t i=0; i<8; i++) {
    // draw a diagonal row of pixels
    matrix.displaybuffer[i] = _BV((counter+i) % 16) | _BV((counter+i+8) % 16)  ;
  }
  // write the changes we just made to the display
  matrix.writeDisplay();
  delay(100);

  counter++;
  if (counter >= 16) counter = 0;  
}

Resources

PDF:

https://drive.google.com/open?id=1eQ_E19XePe33VxLSHafZr_5N6ff0NGXW

Code Libraries Download:

https://drive.google.com/open?id=133xsJC5jvIkjZKpvcl5yu0Wp24m4_6kM

Get One Now

Official Website

http://www.keyestudio.com/keyestudio-easy-plug-iic-i2c-8-8-le-d-dot-matrix-display-for-arduino.html

Retrieved from "http://wiki.keyestudio.com/index.php?title=Ks0139_keyestudio_EASY_plug_I2C_8x8_LED_Matrix&oldid=6836"