Ks0139 keyestudio EASY plug I2C 8x8 LED Matrix: Difference between revisions

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==Sample Code==
==Sample Code==
<pre>
<br>[[File:ks0397 21.1.png|500px|frameless|thumb]]<br>
#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include "Adafruit_GFX.h"


#ifndef _BV
<br>
  #define _BV(bit) (1<<(bit))
'''What You Should See'''<br>
#endif
Upload the code successfully, it will light up a dot light on the matrix. 
<br>[[File:ks0397 21-1.png|500px|frameless|thumb]]<br>


<br>
====Extension Experiment 1====
<br>
<span style=color:brown><big>'''Showing 0~5'''</big></span><br>
You can upload the code below to show the number 0~5.
<br>[[File:ks0397 21.2.1.png|500px|frameless|thumb]]<br>
<br>[[File:ks0397 21.2.2.png|500px|frameless|thumb]]<br>
<br>[[File:ks0397 21.2.3.png|500px|frameless|thumb]]<br>


Adafruit_LEDBackpack matrix = Adafruit_LEDBackpack();
<br>
'''What You Should See'''<br>
Upload the code successfully, the matrix will show the number from 0 to 5.
<br>[[File:ks0397 21-3.png|500px|frameless|thumb]]<br>
<br>[[File:ks0397 21-4.png|500px|frameless|thumb]]<br>
<br>[[File:ks0397 21-5.png|500px|frameless|thumb]]<br>
<br>


uint8_t counter = 0;
====Extension Experiment 2====
<br>
<span style=color:brown><big>'''Button Controlled Heart'''</big></span><br>
<br>
'''Hookup Guide'''<br>
Connect the EASY Plug 8x8 LED Matrix module and button module to control board using RJ11 cables.
<br>[[File:8x8点阵按键.jpg|500px|frameless|thumb]]<br>


void setup() {
<br>
  Serial.begin(9600);
'''Test Code'''<br>
  Serial.println("HT16K33 test");
Below is an example code.<br>
 
<br>[[File:ks0397 21.3.1.png|500px|frameless|thumb]]<br>
  matrix.begin(0x70);  // pass in the address
<br>[[File:ks0397 21.3.2.png|500px|frameless|thumb]]<br>
}


void loop() {
<br>
  // paint one LED per row. The HT16K33 internal memory looks like
'''What You Should See'''<br>
  // a 8x16 bit matrix (8 rows, 16 columns)
<br>[[File:ks0397 21-6.png|500px|frameless|thumb]]<br>
  for (uint8_t i=0; i<8; i++) {
<br>
    // draw a diagonal row of pixels
Upload the code successfully, press the button, you can control the matrix show a big heart image or a small one. It seems like a beating heart.
    matrix.displaybuffer[i] = _BV((counter+i) % 16) | _BV((counter+i+8) % 16)  ;
<br>[[File:ks0397 21-7.png|500px|frameless|thumb]]<br>
  }
<br>[[File:ks0397 21-8.png|500px|frameless|thumb]]<br>
  // write the changes we just made to the display
 
  matrix.writeDisplay();
<br>
  delay(100);


  counter++;
  if (counter >= 16) counter = 0; 
}
</pre>


== Resources ==
== Resources ==

Revision as of 15:48, 7 May 2019

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 module uses HT16K33 chip to drive an 8x8 dot matrix. Just need to use the I2C communication port of microcontroller to control the dot matrix, which can save more port resources of microcontroller.
The four pin of this module is integrated into a crystal plug. All you need to do is connect the module to control board for communication using an RJ11 cable.
Note: this module should be used with EASY plug control board.


Specification

  • Interface: Easy plug
  • Supply voltage: 4.5V-5.5V
  • Maximum display: 16*8
  • Size: 56*32mm*18mm
  • Weight: 14.7g


Connection Diagram


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Sample Code


thumb


What You Should See
Upload the code successfully, it will light up a dot light on the matrix.
thumb


Extension Experiment 1


Showing 0~5
You can upload the code below to show the number 0~5.
thumb

thumb

thumb


What You Should See
Upload the code successfully, the matrix will show the number from 0 to 5.
thumb

thumb

thumb

Extension Experiment 2


Button Controlled Heart

Hookup Guide
Connect the EASY Plug 8x8 LED Matrix module and button module to control board using RJ11 cables.
thumb


Test Code
Below is an example code.

thumb

thumb


What You Should See

thumb

Upload the code successfully, press the button, you can control the matrix show a big heart image or a small one. It seems like a beating heart.
thumb

thumb



Resources

PDF:
https://drive.google.com/open?id=1NPtnHotb5ztewevXIGlvVul3Kmr6P3li

Download the Code:
https://drive.google.com/open?id=1cIoYUKDiiQzu_XAhz4EnBfEzkJFamHfk

Download the Library:
https://drive.google.com/open?id=17bmQlmDwRC_aGVnDdtCIM9KJJwdO9K4O

Get One Now

Official Website: http://www.keyestudio.com/ks0139.html

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