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- #include <Wire.h>
- #include <LiquidCrystal_I2C.h>
- //#define Password_Length 8
- #include <Keypad.h>
- const byte ROWS = 4;
- const byte COLS = 4;
- char hexaKeys[ROWS][COLS] = {
- {'1', '2', '3', 'A'},
- {'4', '5', '6', 'B'},
- {'7', '8', '9', 'C'},
- {'*', '0', '#', 'D'}
- };
- byte rowPins[ROWS] = {9, 8, 7, 6};
- byte colPins[COLS] = {5, 4, 3, 2};
- 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);
- }
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