Digital Keypad Security Door Lock using Arduino Hi everyone, welcome to another blog tutorial,in this tutorial I will teach you how tomake this password enabled entry. Components: 4X4 matrix keypad membrane keypad 16X2 LCD Arduino Servo Motor Connecting Wires Potentiometer Circuit Diagram: Description: I'm using as an improvised enclosure and this is the door, this is a 4X4 matrix keypad, membrane keypad, this is a 16X2 LCD.So, what this system does is this, like I said it’s a password enabled entry, so, I programmed the system with Arduino, so,when you enter the wrong password using this 4 by 4 matrix keypad the door will not open and the password you entered will be displayed on this LCD, but once you enter the right password, the door will open, then it will remain open for 5 and then close. So, the components or for the parts I usedin the design you can see here I have a motor driver this is a motor driver to drive the motor that opens and closes the door, this is a potentiomet...
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