Libraries used
GitHub - Chris–A/Keypad: A version of the keypad library found in Wiring. This is just a copy made compatible with the Arduino IDE library manager.
Or you can install from library manager
Code
Based off Keypad/examples/CustomKeypad/CustomKeypad.ino at master · Chris–A/Keypad · GitHub
#include <Keypad.h>
const byte ROWS = 4;
const byte COLS = 3;
char hexaKeys[ROWS][COLS] = {
{'1', '2', '3'},
{'4', '5', '6'},
{'7', '8', '9'},
{'*', '0', '#'}
};
byte rowPins[ROWS] = {53,52,51,50};
byte colPins[COLS] = {49, 48, 47};
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
void setup(){
Serial.begin(9600);
}
void loop(){
char customKey = customKeypad.getKey();
if (customKey){
Serial.println(customKey);
}
}
