PROJECTS
#include <Keypad.h> #include<LiquidCrystal.h> #include<EEPROM.h> #define buzzer 15 LiquidCrystal lcd(13,12,11,10,9,8); char password[4]; char pass[4],pass1[4]; int i=0; char customKey=0; const byte ROWS = 4; //four rows const byte COLS = 4; //four columns char hexaKeys[ROWS][COLS] = { {'1','2','3','A'}, {'4','5','6','B'}, {'7','8','9','C'}, {'*','0','#','D'} }; byte rowPins[ROWS] = {3, 2, 1, 0}; //connect to the row pinouts of the keypad byte colPins[COLS] = {4, 5, 6, 7}; //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() { lcd.begin(16,2); pinMode(led, OUTPUT); pinMode(buzzer, OUTPUT); pinMode(m11, OUTPUT); pinMode(m12, OUTPUT); lcd.print(" Electron