Introduction: How to Make Password Lock System | Simple Arduino Project | Easy to Make Smart Door Lock
In this blog I will show you how you can make your very own Password Enabled Smart Door Locking System using Arduino.
You don’t need to have much of programming knowledge to make this project. Simple, Easy & Effective.
Step 1: All Things You Need for This Project :
All Things You Need For This Project :
1. Arduino Uno - https://amzn.to/3ez28wN
2. Servo Motor - https://amzn.to/3bAJqD5
3. Keypad - https://amzn.to/2PNzT2N
4. PVC Board - https://amzn.to/3byH6MA
5. Iron Wire
6. Iron Lock
Step 2: Circuit Diagram
Step 3: Programming : JUST COPY & PASTE
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*/
#include
#include
Servo ServoMotor;
char* password = "888"; // 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(90);
}
}
