Smart Door Lock
Circuit Digram-:
(Keypad To Arduino Uno Connection)
1pin - 2pin Arduino
2pin - 3pin Arduino
3pin - 4pin Arduino
4pin - 5pin Arduino
5pin - 6pin Arduino
6pin - 7pin Arduino
7pin - 8pin Arduino
8pin - 9pin Arduino
(Servo Motor TO Arduino Uno Connection)
YELLOW PIN - 11
RED PIN - 5v
BROWN PIN - GND
(ARDUINO CODE)-:
#include <Servo.h>
#include <Keypad.h>
Servo ServoMotor;
char* password = "123"; // change the password here, just pick any 3 numbers
int position = 0;
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = { 8, 7, 6, 9 };
byte colPins[COLS] = { 5, 4, 3, 2 };
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
int RedpinLock = 12;
int GreenpinUnlock = 13;
void setup()
{
ServoMotor.attach(11);
LockedPosition(true);
}
void loop()
{
char key = keypad.getKey();
if (key == '*' || key == '#')
{
position = 0;
LockedPosition(true);
}
if (key == password[position])
{
position ++;
}
if (position == 3)
{
LockedPosition(false);
}
delay(100);
}
void LockedPosition(int locked)
{
if (locked)
{
digitalWrite(RedpinLock, HIGH);
digitalWrite(GreenpinUnlock, LOW);
ServoMotor.write(11);
}
else
{
digitalWrite(RedpinLock, LOW);
digitalWrite(GreenpinUnlock, HIGH);
ServoMotor.write(180);
}
}