Arduino : Lock Electric with Password

Tool System:

Arduino UNO as an electronic key device with a security in the form of a password that is inputted via the keypad. This tool consists of Arduino UNO as the main processing & controlling system of the system. Keypad is used to input password code data to determine whether the password is correct so that the key is open or the password is wrong so the key is closed. Also used to change old passwords with new passwords. LCD is used for display or display when password entry or password change menu. Relay as an actuator which controls the solenoid directly. Finally the solenoid is used to open or close the lock.

Hardware Requirements:

• 4x4 keypad

• 2x16 LCD module

• 5Vdc Relay Module

• Solenoid

• Buzzer

• Arduino UNO module

• Power supply + 9Volt