DIY LED MATRIX CONTROLLER

This will teach you how to control individual led in 8X8 LED MATRIX using android aa.

 COMPONENTS REQUIRED

1. 8X8 LED MATRIX
2. Breadboard
3. Arduino Nano
4. Connecting Wires
5. Bluetooth HC-05 

CONNECTION

Connect as given in circuit Diagram

ARDUINO Code

 #include <Led.h>

int DIN = 2;
int CS =  3;
int CLK = 4;


int row=0;
int col=0;
int temp=0;
int data=0;

LedControl lc=LedControl(DIN,CLK,CS,1);

void setup()
{
 
 lc.shutdown(0,false);     
 lc.setIntensity(0,5);
 lc.clearDisplay(0);
 Serial.begin(9600);
}




void loop()
{
   if(Serial.available() > 0)    
   {
      data = Serial.read();
      Serial.print(data);// it returns ascii value if we send one in the phone              
      if(data < 96)
      {
       if(temp==0)
       {
        row=data-48;
        temp=1;
       }
       else
       col=data-48;
      }
  
       else if(data=='n')
       {
         lc.setLed(0,row,col,true);
       Serial.println('n');
      Serial.println(row);
      Serial.println(col);
         temp=0;
       }
       else if(data=='f')
       {
         lc.setLed(0,row,col,false);
      Serial.println('f');
      Serial.println(row);
      Serial.println(col);
         temp=0;
       }

       else if(data=='r')
       lc.clearDisplay(0);
    }

  
}

ENJOY ^_^

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