CODE
#include <Keypad.h>
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = {13, 12, 11, 10}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {9, 8, 7, 6}; //connect to the column pinouts of the keypad
//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
void setup(){
Serial.begin(9600);
pinMode(5, OUTPUT);
pinMode(4, OUTPUT);
pinMode(3, OUTPUT);
pinMode(2, OUTPUT);
}
void loop(){
char customKey = customKeypad.getKey();
if (customKey){
Serial.println(customKey);
if(customKey == '1')
{
digitalWrite(5, 1);
}
else if(customKey == '2')
{
digitalWrite(4, 1);
}
else if(customKey == '3')
{
digitalWrite(3, 1);
}
else if(customKey == '4')
{
digitalWrite(2, 1);
}
else if(customKey == '0')
{
digitalWrite(5, 0);
digitalWrite(4, 0);
digitalWrite(3, 0);
digitalWrite(2, 0);
}
}
}