#include <Keypad.h>
const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
{ '1', '2', '3', 'A' },
{ '4', '5', '6', 'B' },
{ '7', '8', '9', 'C' },
{ '*', '0', '#', 'D' }
};
uint8_t colPins[COLS] = { 5, 4, 3, 2 };
uint8_t rowPins[ROWS] = { 9, 8, 7, 6 };
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);
const int ledPin1 = 10;
void setup() {
pinMode(ledPin1, OUTPUT);
Serial.begin(9600);
}
void loop() {
char key = keypad.getKey();
if (key != NO_KEY) {
Serial.println(key);
switch (key) {
case '1':
digitalWrite(ledPin1, HIGH);
break;
case '0':
digitalWrite(ledPin1, LOW);
break;
}
}
}