8x8 Dot Matrix Interfacing with Arduino Uno By Engr.Habib Ur Rehman

 

 8x8 Dot Matrix Interfacing

  with Arduino Uno

 By Engr.Habib Ur Rehman

Components/Equipment Required:

            Following Components/Equipment are required to perform task.

1.    Arduino Uno (https://piees.pk/product/arduino-uno-r3/)

2.    8x8 Dot Matrix Max7219 Module

3.    Breadboard

4.    Jumper Wires (https://piees.pk/product-category/jumper-wires/)

Circuit Diagram:

Arduino Program:

Note: 8x8 Dot Matrix Library for Arduino Uno is named as “LEDControlMS”, just copy and paste LEDControlMS folder in Arduino library Folder. (https://github.com/shaai/Arduino_LED_matrix_sketch)

//We always have to include the library

#include "LedControlMS.h"

LedControl lc=LedControl(12,11,10,1);

unsigned long delaytime=100;

void setup() {

  lc.shutdown(0,false);

  lc.setIntensity(0,8);

  lc.clearDisplay(0);

}

void writeArduinoOnMatrix() {

  byte a[5]={B01111110,B10001000,B10001000,B10001000,B01111110};

  byte r[5]={B00111110,B00010000,B00100000,B00100000,B00010000};

  byte d[5]={B00011100,B00100010,B00100010,B00010010,B11111110};

  byte u[5]={B00111100,B00000010,B00000010,B00000100,B00111110};

  byte i[5]={B00000000,B00100010,B10111110,B00000010,B00000000};

  byte n[5]={B00111110,B00010000,B00100000,B00100000,B00011110};

  byte o[5]={B00011100,B00100010,B00100010,B00100010,B00011100};

  lc.setRow(0,0,a[0]);

  lc.setRow(0,1,a[1]);

  lc.setRow(0,2,a[2]);

  lc.setRow(0,3,a[3]);

  lc.setRow(0,4,a[4]);

  delay(delaytime);

  lc.setRow(0,0,r[0]);

  lc.setRow(0,1,r[1]);

  lc.setRow(0,2,r[2]);

  lc.setRow(0,3,r[3]);

  lc.setRow(0,4,r[4]);

  delay(delaytime);

  lc.setRow(0,0,d[0]);

  lc.setRow(0,1,d[1]);

  lc.setRow(0,2,d[2]);

  lc.setRow(0,3,d[3]);

  lc.setRow(0,4,d[4]);

  delay(delaytime);

  lc.setRow(0,0,u[0]);

  lc.setRow(0,1,u[1]);

  lc.setRow(0,2,u[2]);

  lc.setRow(0,3,u[3]);

  lc.setRow(0,4,u[4]);

  delay(delaytime);

  lc.setRow(0,0,i[0]);

  lc.setRow(0,1,i[1]);

  lc.setRow(0,2,i[2]);

  lc.setRow(0,3,i[3]);

  lc.setRow(0,4,i[4]);

  delay(delaytime);

  lc.setRow(0,0,n[0]);

  lc.setRow(0,1,n[1]);

  lc.setRow(0,2,n[2]);

  lc.setRow(0,3,n[3]);

  lc.setRow(0,4,n[4]);

  delay(delaytime);

  lc.setRow(0,0,o[0]);

  lc.setRow(0,1,o[1]);

  lc.setRow(0,2,o[2]);

  lc.setRow(0,3,o[3]);

  lc.setRow(0,4,o[4]);

  delay(delaytime);

  lc.setRow(0,0,0);

  lc.setRow(0,1,0);

  lc.setRow(0,2,0);

  lc.setRow(0,3,0);

  lc.setRow(0,4,0);

  delay(delaytime);

}

void rows() {

  for(int row=0;row<8;row++) {

    delay(delaytime);

    lc.setRow(0,row,B10100000);

    delay(delaytime);

    lc.setRow(0,row,(byte)0);

    for(int i=0;i<row;i++) {

      delay(delaytime);

      lc.setRow(0,row,B10100000);

      delay(delaytime);

      lc.setRow(0,row,(byte)0);

    }

  }

}

void columns() {

  for(int col=0;col<8;col++) {

    delay(delaytime);

    lc.setColumn(0,col,B10100000);

    delay(delaytime);

    lc.setColumn(0,col,(byte)0);

    for(int i=0;i<col;i++) {

      delay(delaytime);

      lc.setColumn(0,col,B10100000);

      delay(delaytime);

      lc.setColumn(0,col,(byte)0);

    }

  }

}

void single() {

  for(int row=0;row<8;row++) {

    for(int col=0;col<8;col++) {

      delay(delaytime);

      lc.setLed(0,row,col,true);

      delay(delaytime);

      for(int i=0;i<col;i++) {

        lc.setLed(0,row,col,false);

        delay(delaytime);

        lc.setLed(0,row,col,true);

        delay(delaytime);

      }

    }

  }

}

void loop() {

  writeArduinoOnMatrix();

  rows();

  columns();

  single();

}