View source for KS0396 keyestudio 8x8 LED Matrix Module Address Select


[[image:0396图片1.png|thumb|500px|right|keyestudio 8x8 LED Matrix Module Address Select (Black and Eco-friendly)]]

==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. <br>
This module uses HT16K33 chip to drive an 8x8 dot matrix. <br>
Just need to use the I2C communication port of microcontroller to control the dot matrix, which can save more port resources of microcontroller.<br>
The matrix module comes with a 4Pin header of 2.54mm pin pitch. <br>
You can connect the module to control board for communication using jumper wires.<br>
Besides, it comes with three DIP switches. You can randomly toggle the switch to select the I2C communication address.
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The address settings are as shown below.
<br>[[File:0395图片1.png|600px|frameless|thumb]]<br>

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==Technical Details== 
*Interface: 4Pin header
*Operating voltage: DC 4.5V-5.5V
*Comes with three DIP switches for address selection
*Dimensions：52mm*34mm*11mm
*Weight：13.2g

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==Hookup Guide==
<br>[[File:0396图片2.png|600px|frameless|thumb]]<br>

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==Test Code==
*Download the library:<br>
https://drive.google.com/open?id=1cg90JqypbThqqhquhMEVZLq2CLzeYkrd

<pre>
#include <Matrix.h>
Matrix myMatrix(A4,A5);
uint8_t LedArray1[8]={0x00,0x18,0x24,0x42,0x81,0x99,0x66,0x00};
uint8_t  LEDArray[8];
void setup(){
myMatrix.begin(0x70);
}

void loop(){
  myMatrix.clear();
  for(int i=0; i<8; i++)
  {
    LEDArray[i]=LedArray1[i];
    for(int j=7; j>=0; j--)
    {
      if((LEDArray[i]&0x01)>0)
      myMatrix.drawPixel(j, i,1);
      LEDArray[i] = LEDArray[i]>>1;
    }
  }
  myMatrix.writeDisplay();
}
</pre>

<br>
<span style="color: red">'''Note: ''' before compiling the code, do remember to place the Matrix library folder into directory \Arduino\libraries. Otherwise, fail to compile the code. <br>
For example: C:\Program Files\Arduino\libraries

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==Test Result==
Done uploading the code to the board, power on, you should see the 8*8 matrix displaying a heart image. Shown below.  
<br>[[File:0396图片6.png|500px|frameless|thumb]]<br>

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==Settings Method==
'''1.Set the communication address.'''  Refer to the address chart. <br>
The code is set as below. 
<br>[[File:0395图片4.png|600px|frameless|thumb]] [[File:0396图片3.png|600px|frameless|thumb]]<br>  
<br>[[File:0395图片6.png|600px|frameless|thumb]]<br>  

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'''2.Set the display image''' <br>
You can set the display image in the code shown below. 
<br>[[File:0395图片7.png|600px|frameless|thumb]]<br>  
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Place the matrix module as follows: 
<br>[[File:0396图片4.png|600px|frameless|thumb]]<br>  
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Then convert 0x00,0x18,0x24,0x42,0x81,0x99,0x66,0x00 into Binary number:<br>
*0x00 should be 0  0  0  0  0  0  0  0  <br>
*0x18 should be 0  0  0  1  1  0  0  0  <br>
*0x24 should be 0  0  1  0  0  1  0  0  <br>
*0x42 should be 0  1  0  0  0  0  1  0  <br>
*0x81 should be 1  0  0  0  0  0  0  1  <br>
*0x99 should be 1  0  0  1  1  0  0  1  <br>
*0x66 should be 0  1  1  0  0  1  1  0  <br>
*0x00 should be 0  0  0  0  0  0  0  0  <br>

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The first hexadecimal number represents the control of the first column of LEDs. The second data represents the control of the second column of LEDs. And so on.
<br>
The settings is converting Hexadecimal data into binary data 8-bit.<br>
The number 0 means LED off, and number 1 means LED on.<br>
The first converted number is controlling the first row of LED on and off, and so on.<br>
<br>[[File:0395图片9.png|600px|frameless|thumb]]<br>  

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==Extension Experiment==
You can connect several modules to the shield, then connect them to control board, and change the communication address, controlling the matrix modules display different images.
<br>[[File:0396图片5.png|600px|frameless|thumb]]<br>  

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==Resources Download==

https://fs.keyestudio.com/KS0396


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==Get One Now==
*[https://www.keyestudio.com/keyestudio-88-led-dot-matrix-module-address-select-for-arduino-p0511-p0511.html   '''Official website'''  ]

*[https://www.aliexpress.com/store/product/Keyestudio-8-8-LED-Dot-Matrix-Module-for-Arduino/1452162_32963650424.html?spm=2114.12010611.8148356.15.948f6c0eOWLbce  Shop on aliexpress ]


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[[category: Module]]