Project tutorial
MAX7219 Parola Library Examples

MAX7219 Parola Library Examples © GPL3+

With this project, we learn the MAX7219 Parola driver file.

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Components and supplies

Apps and online services

About this project

MAX7219

Do you need a beautiful screen that you can use in your projects?

I recommend MAX7219 matrix display.You can download the driver files from the links below.

https://github.com/MajicDesigns/MD_Parola

https://github.com/MajicDesigns/MD_MAX72XX

I share the sample applications I have prepared with you. It can help you learn.

I designed the screen you see in the video and it is compatible with the password library. So the links should look like this.

if you are using a similar screen. Links should be as follows

Schematic drawing of a display.

my website's address for more technical information and for the pcb drawing file.

https://www.altiumdesignerprojects.com/product/max7219-matrix-led-display

Examine all to understand the Password Library file

You can download the sample codes I prepared from my github account.

Good work.

Code

4_Counter.inoArduino
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
/*
 Hello 
 I design developer tools for embedded electronic systems. You can buy my projects design files.
 https://www.altiumdesignerprojects.com
*/
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW 

#define MAX_DEVICES 8
#define CS_PIN      10
#define CLK_PIN     13
#define DATA_PIN    11

MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES); // Software spi

char displayBuffer[12] = " ";

word counter = 0;
byte i = 0;

void setup(){
 
 P.begin();
 P.setIntensity(6); 

}

void loop(){
  
 if(P.displayAnimate()){
   // sprintf(displayBuffer, "%s", "29.08.2019" ); 
    
   //sprintf(displayBuffer, "%d", counter );   
    
   sprintf(displayBuffer, "%04d", counter );  
   
   P.displayText( displayBuffer , PA_CENTER, 0, 0, PA_PRINT, PA_NO_EFFECT);

   counter++;
   delay(1000);

 }

}

Schematics

MAX7219 Matrix Led Display
Schematic mlx2lrgfig

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