Password Based Door Lock System is designed by using ARDUINO UNO R3 in which as soon as the appropriate code or password is entered, the door is opened and the person is permitted entry to the secured area or place. Old long established lock structures use mechanical locking and those may be changed through new superior strategies of locking structures. These methods are a mixture of mechanical and digital devices and are distinctly clever. One of the awesome functions of these door lock structures is their simplicity and high effi ciency. Such an automatic lock gadget is composed of digital manage assembly, which controls the output load via a password. The instance of this output load may be a motor or a an automatic door latch.
• U1: Arduino Uno R3
• SERVO1: Positional Micro Servo
• D1: Red LED
• D2: Green LED
• R1, R2, R3: 3x 1 kΩ Resistor
• U2: LCD 16 x 2
• Rpot1: 250 kΩ Potentiometer
• PIEZO1: Piezo
• BAT1: 9V Battery
• L1: Light bulb
• K1: Relay SPDT
• KEYPAD1: Keypad 4x4