How To Control An LED Using Keypad?

Arduino coding:

#include <Keypad.h>

const byte ROWS = 4; //four rows

const byte COLS = 4; //four columns

char keys[ROWS][COLS] = {

  {'7','8','9','/'},

  {'4','5','6','*'},

  {'1','2','3','-'},

  {'c','0','=','+'}

};

byte rowPins[ROWS] = {2, 3, 4, 5}; //connect to the row pinouts of the keypad

byte colPins[COLS] = {6, 7, 8, 9}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup(){

   pinMode(10,OUTPUT);  

   pinMode(11,OUTPUT); 

   pinMode(12,OUTPUT); 

   pinMode(13,OUTPUT);      

   pinMode(0,OUTPUT);  

   pinMode(1,OUTPUT);    

  

   Serial.begin(9600);

}  

void loop()

{

  char key = keypad.getKey();

  if (key)

  {

     if (key=='1')

     {

      digitalWrite(10,HIGH);

      delay(500);

      digitalWrite(10,LOW);

      delay(500);

     }

     else if(key=='2')

     {

      digitalWrite(11,HIGH);

      delay(500);

      digitalWrite(11,LOW);

      delay(500);

     }

     else if(key=='3')

     {

      digitalWrite(12,HIGH);

      delay(500);

      digitalWrite(12,LOW);

      delay(500);

     }

      else if(key=='4')

     {

      digitalWrite(13,HIGH);

      delay(500);

      digitalWrite(13,LOW);

      delay(500);

     }

      else if(key=='5')

     {

      digitalWrite(0,HIGH);

      delay(500);

      digitalWrite(0,LOW);

      delay(500);

     }

     else

     {

      digitalWrite(1,HIGH);

      delay(500);

      digitalWrite(1,LOW);

      delay(500);

     }   

  }   

}

Embedded systems basics:
Embedded systems step by step video guide
-using PROTEUS ISIS professional and Arduino IDE software

Click below link for interface Keypad with Arduino UNO
https://youtu.be/cnPb4pObkXc

Click below link for the gas sensor
https://youtu.be/ALm-okkKRPY

Click below link for PIR sensor
https://youtu.be/4gRo1ijpMmQ

Click below link for the temperature sensor
https://youtu.be/1GJC_6eF7Xg

Click below link for vibration sensor
https://youtu.be/jiJAhxa687s

Click below link for M shape led blinking
https://youtu.be/S46J4L4KOu4

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