Published September 6, 2020 © GPL3+

Controlling 8x8 LED matrix without drivers & libraries

Complete tutorial on how to control 8x8 Matrix when you do not want to use driver chips like MAX2719 and corresponding Libraries.

BeginnerFull instructions provided20,630

Controlling 8x8 LED matrix without drivers & libraries

Things used in this project

Hardware components

Arduino Nano R3

LED Dot Matrix Display, Red

Through Hole Resistor, 330 ohm

Story

This video is a tutorial on how to control 1088AS Common Cathode 8x8 LED matrix without the use of any driver chips like MAX7219 and corresponding libraries.

I will soon create the second tutorial of controlling the same matrix but this time using MAX7219 and compare the results.

The complete tutorial can be found here:

If you like this content and you want to support me in clreating similar videos go to my Patreon webpage

https://www.patreon.com/MariosIdeas

https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=7PD67JWZ9S3EJ&source=url

Schematics

Code

// Mario's Ideas
// Testing all 64 leds in 8x8 LED matrix by lighting them up one by one

// Raws 
#define R1 2
#define R2 3
#define R3 4
#define R4 5
#define R5 6
#define R6 7
#define R7 8
#define R8 9
//Columns
#define C1 10
#define C2 11
#define C3 12
#define C4 13
#define C5 A0
#define C6 A1
#define C7 A2
#define C8 A3



void setup() {
   pinMode(R1, OUTPUT);
   pinMode(R2, OUTPUT);
   pinMode(R3, OUTPUT);
   pinMode(R4, OUTPUT);
   pinMode(R5, OUTPUT);
   pinMode(R6, OUTPUT);
   pinMode(R7, OUTPUT);
   pinMode(R8, OUTPUT);
   pinMode(C1, OUTPUT);
   pinMode(C2, OUTPUT);
   pinMode(C3, OUTPUT);
   pinMode(C4, OUTPUT);
   pinMode(C5, OUTPUT);
   pinMode(C6, OUTPUT);
   pinMode(C7, OUTPUT);
   pinMode(C8, OUTPUT);
// Turning all the LEDs off at the start of the sketch
  digitalWrite(R1,HIGH);
  digitalWrite(R2,HIGH);
  digitalWrite(R3,HIGH);
  digitalWrite(R4,HIGH);
  digitalWrite(R5,HIGH);
  digitalWrite(R6,HIGH);
  digitalWrite(R7,HIGH);
  digitalWrite(R8,HIGH);
  digitalWrite(C1,LOW);
  digitalWrite(C2,LOW);
  digitalWrite(C3,LOW);
  digitalWrite(C4,LOW);
  digitalWrite(C5,LOW);
  digitalWrite(C6,LOW);
  digitalWrite(C7,LOW);
  digitalWrite(C8,LOW);
}



void SelectRow(int row){
  if (row==1) digitalWrite(R1,LOW); else digitalWrite(R1,HIGH);
  if (row==2) digitalWrite(R2,LOW); else digitalWrite(R2,HIGH);
  if (row==3) digitalWrite(R3,LOW); else digitalWrite(R3,HIGH);
  if (row==4) digitalWrite(R4,LOW); else digitalWrite(R4,HIGH);
  if (row==5) digitalWrite(R5,LOW); else digitalWrite(R5,HIGH);
  if (row==6) digitalWrite(R6,LOW); else digitalWrite(R6,HIGH);
  if (row==7) digitalWrite(R7,LOW); else digitalWrite(R7,HIGH);
  if (row==8) digitalWrite(R8,LOW); else digitalWrite(R8,HIGH);
}

void SelectColumn(int column){
  if (column==1) digitalWrite(C1,HIGH); else digitalWrite(C1,LOW);
  if (column==2) digitalWrite(C2,HIGH); else digitalWrite(C2,LOW);
  if (column==3) digitalWrite(C3,HIGH); else digitalWrite(C3,LOW);
  if (column==4) digitalWrite(C4,HIGH); else digitalWrite(C4,LOW);
  if (column==5) digitalWrite(C5,HIGH); else digitalWrite(C5,LOW);
  if (column==6) digitalWrite(C6,HIGH); else digitalWrite(C6,LOW);
  if (column==7) digitalWrite(C7,HIGH); else digitalWrite(C7,LOW);
  if (column==8) digitalWrite(C8,HIGH); else digitalWrite(C8,LOW);

}


void loop() {
  for (int i=1;i<9;i++) {
    for (int j=1;j<9;j++){
      SelectRow(i);
      SelectColumn(j); 
      delay(100);
    }
  }
}

// Mario's ideas
// Displaying cat image on 8x8 LED Matrix (Multiplexing)

// Raws 
#define R1 2
#define R2 3
#define R3 4
#define R4 5
#define R5 6
#define R6 7
#define R7 8
#define R8 9
//Columns
#define C1 10
#define C2 11
#define C3 12
#define C4 13
#define C5 A0
#define C6 A1
#define C7 A2
#define C8 A3

int pause=300;


  int Cat [8] [8] ={
  {1,0,0,0,1,0,0,0},
  {1,1,1,1,1,0,0,0},
  {1,0,1,0,1,0,0,0},
  {0,1,1,1,0,0,0,1},
  {0,0,1,0,0,0,0,1},
  {0,1,1,1,1,0,0,1},
  {0,1,1,1,1,1,0,1},
  {1,0,1,1,1,1,1,0},
  };

void setup() {
   pinMode(R1, OUTPUT);
   pinMode(R2, OUTPUT);
   pinMode(R3, OUTPUT);
   pinMode(R4, OUTPUT);
   pinMode(R5, OUTPUT);
   pinMode(R6, OUTPUT);
   pinMode(R7, OUTPUT);
   pinMode(R8, OUTPUT);
   pinMode(C1, OUTPUT);
   pinMode(C2, OUTPUT);
   pinMode(C3, OUTPUT);
   pinMode(C4, OUTPUT);
   pinMode(C5, OUTPUT);
   pinMode(C6, OUTPUT);
   pinMode(C7, OUTPUT);
   pinMode(C8, OUTPUT);

  digitalWrite(R1,HIGH);
  digitalWrite(R2,HIGH);
  digitalWrite(R3,HIGH);
  digitalWrite(R4,HIGH);
  digitalWrite(R5,HIGH);
  digitalWrite(R6,HIGH);
  digitalWrite(R7,HIGH);
  digitalWrite(R8,HIGH);
  digitalWrite(C1,LOW);
  digitalWrite(C2,LOW);
  digitalWrite(C3,LOW);
  digitalWrite(C4,LOW);
  digitalWrite(C5,LOW);
  digitalWrite(C6,LOW);
  digitalWrite(C7,LOW);
  digitalWrite(C8,LOW);
}



void SelectRow(int row){
  if (row==1) digitalWrite(R1,LOW); else digitalWrite(R1,HIGH);
  if (row==2) digitalWrite(R2,LOW); else digitalWrite(R2,HIGH);
  if (row==3) digitalWrite(R3,LOW); else digitalWrite(R3,HIGH);
  if (row==4) digitalWrite(R4,LOW); else digitalWrite(R4,HIGH);
  if (row==5) digitalWrite(R5,LOW); else digitalWrite(R5,HIGH);
  if (row==6) digitalWrite(R6,LOW); else digitalWrite(R6,HIGH);
  if (row==7) digitalWrite(R7,LOW); else digitalWrite(R7,HIGH);
  if (row==8) digitalWrite(R8,LOW); else digitalWrite(R8,HIGH);
}

void Set_LED_in_Active_Row(int column, int state){
  if (column==1) digitalWrite(C1,state); 
  if (column==2) digitalWrite(C2,state); 
  if (column==3) digitalWrite(C3,state); 
  if (column==4) digitalWrite(C4,state); 
  if (column==5) digitalWrite(C5,state); 
  if (column==6) digitalWrite(C6,state); 
  if (column==7) digitalWrite(C7,state); 
  if (column==8) digitalWrite(C8,state); 
}

void loop() {


    for (int j=0;j<8;j++){
    SelectRow(j+1);
      for (int i=0;i<8;i++){
        Set_LED_in_Active_Row(i+1 ,Cat[j][i]);
      }
      delay(2+pause);
    }
if(pause!=0 and pause>100)pause=pause-100;
if(pause!=0 and pause<=100)pause=pause-10;
}

// Mario's Ideas
// Scrolling text on 8x8 LED matrix (Multiplexing)

// Raws 
#define R1 2
#define R2 3
#define R3 4
#define R4 5
#define R5 6
#define R6 7
#define R7 8
#define R8 9
//Columns
#define C1 10
#define C2 11
#define C3 12
#define C4 13
#define C5 A0
#define C6 A1
#define C7 A2
#define C8 A3

int position=0;
  
  int Marios_ideas [8] [54] ={
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,1,0,0,0,1,0,0,1,1,0,0,1,1,1,0,0,0,0,0,1,1,0,1,0,1,1,0,0,0,0,0,0,1,1,1,0,0,1,1,1,0,0,1,1,0,0,0,1,1,0,0,0,0},
  {0,1,1,0,1,1,0,1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,0,1,0,0,0,1,0,1,0,0,1,0,1,0,0,0,1,0,0,1,0,1,0,0,1,0,0,0},
  {0,1,0,1,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,1,0,1,0,0,1,0,1,0,0,0,1,0,0,1,0,1,0,0,0,0,0,0},
  {0,1,0,0,0,1,0,1,1,1,1,0,1,1,1,0,0,1,0,1,0,0,1,0,0,1,1,0,0,0,0,1,0,1,0,0,1,0,1,1,1,0,1,1,1,1,0,0,1,1,0,0,0,0},
  {0,1,0,0,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,0,0,0,1,0,0,0,1,0,1,0,0,1,0,1,0,0,0,1,0,0,1,0,0,0,0,1,0,0,0},
  {0,1,0,0,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,0,1,1,0,0,1,0,0, 1,0,0,0,1,0,1,1,1,0,0,1,0,0,0,1,0,0,1,0,1,0,0,1,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,1,1,0,0,0,0}
  };

void setup() {
   pinMode(R1, OUTPUT);
   pinMode(R2, OUTPUT);
   pinMode(R3, OUTPUT);
   pinMode(R4, OUTPUT);
   pinMode(R5, OUTPUT);
   pinMode(R6, OUTPUT);
   pinMode(R7, OUTPUT);
   pinMode(R8, OUTPUT);
   pinMode(C1, OUTPUT);
   pinMode(C2, OUTPUT);
   pinMode(C3, OUTPUT);
   pinMode(C4, OUTPUT);
   pinMode(C5, OUTPUT);
   pinMode(C6, OUTPUT);
   pinMode(C7, OUTPUT);
   pinMode(C8, OUTPUT);

  digitalWrite(R1,HIGH);
  digitalWrite(R2,HIGH);
  digitalWrite(R3,HIGH);
  digitalWrite(R4,HIGH);
  digitalWrite(R5,HIGH);
  digitalWrite(R6,HIGH);
  digitalWrite(R7,HIGH);
  digitalWrite(R8,HIGH);
  digitalWrite(C1,LOW);
  digitalWrite(C2,LOW);
  digitalWrite(C3,LOW);
  digitalWrite(C4,LOW);
  digitalWrite(C5,LOW);
  digitalWrite(C6,LOW);
  digitalWrite(C7,LOW);
  digitalWrite(C8,LOW);
}



void SelectRow(int row){
  if (row==1) digitalWrite(R1,LOW); else digitalWrite(R1,HIGH);
  if (row==2) digitalWrite(R2,LOW); else digitalWrite(R2,HIGH);
  if (row==3) digitalWrite(R3,LOW); else digitalWrite(R3,HIGH);
  if (row==4) digitalWrite(R4,LOW); else digitalWrite(R4,HIGH);
  if (row==5) digitalWrite(R5,LOW); else digitalWrite(R5,HIGH);
  if (row==6) digitalWrite(R6,LOW); else digitalWrite(R6,HIGH);
  if (row==7) digitalWrite(R7,LOW); else digitalWrite(R7,HIGH);
  if (row==8) digitalWrite(R8,LOW); else digitalWrite(R8,HIGH);
}

void Set_LED_in_Active_Row(int column, int state){
  if (column==1) digitalWrite(C1,state); 
  if (column==2) digitalWrite(C2,state); 
  if (column==3) digitalWrite(C3,state); 
  if (column==4) digitalWrite(C4,state); 
  if (column==5) digitalWrite(C5,state); 
  if (column==6) digitalWrite(C6,state); 
  if (column==7) digitalWrite(C7,state); 
  if (column==8) digitalWrite(C8,state); 
}

void loop() {

  for (int x=0; x<5;x++){
    for (int j=0;j<8;j++){
    SelectRow(j+1);
      for (int i=0;i<8;i++){
        Set_LED_in_Active_Row(i+1,Marios_ideas[j][(i+position)-abs((i+position)/54)*54]);
      }
      delay(2);
    }
  }
  position=position+1;
}

Credits

mdraber

49 projects • 69 followers

Controlling 8x8 LED matrix without drivers & libraries

Things used in this project

Hardware components

Story

Custom parts and enclosures

STL files for Matrix Holder and Diffusion Panel

Schematics

Connecting 8x8LED Matrix to Arduino

Code

Testing all 64 LED of the 8x8 LED matrix

Displaying cat image on 8x8 LED Matrix (Multiplexing)

Scrolling text on 8x8 LED matrix (Multiplexing)

Credits

mdraber

Comments

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Controlling 8x8 LED matrix without drivers & libraries

Controlling 8x8 LED matrix without drivers & libraries

Things used in this project

Hardware components

Story

Custom parts and enclosures

STL files for Matrix Holder and Diffusion Panel

Schematics

Connecting 8x8LED Matrix to Arduino

Code

Testing all 64 LED of the 8x8 LED matrix

Displaying cat image on 8x8 LED Matrix (Multiplexing)

Scrolling text on 8x8 LED matrix (Multiplexing)

Credits

mdraber

Comments

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