Fingerprint Door Lock Circuit Diagram

As arduino uno has an inbuilt 5v voltage regulator a common 12v supply can be used for the whole system.

Fingerprint door lock circuit diagram.

If you want to buy the entire combo for the project then click here. Download the project libraries. Armature surrounded by a big coil of copper wire forms a solenoid. In this post we will interface a fingerprint sensor module with arduino and will build a fingerprint based biometric security system with door locking.

A slug of metal i e. Finger print is considered one of the safest key to lock. First of all we start from the brain of this project which is the arduino uno board. The complete circuit diagram for our arduino based digital keypad door lock project is shown below.

Code and circuit diagram for fingerprint sensing door locking system july 3 2019 january 22 2020 admin 0 comments. An arduino microcontroller mcu requires only 5v but the solenoid electric lock requires 12v. Circuit of this project is very simple which contains arduino keypad module buzzer servo motor and lcd. Circuit diagram for arduino keypad door lock.

Electronic door lock solenoid arduino fingerprint sensor lock. Fingerprint door lock circuit diagram. I am not a professional so haven t used any editing software like fritz to edit the code. It is nothing new but almost similar to an electromagnet.

First the lcd will identify the fingerprint id that was found and show the confidence value for which it matched second the green led will turn on while the red led turns off and finally the relay circuit will activate allowing the door lock supply voltage to flow through thus activating the strike and allowing entry. To add a fingerprint just show the finger on the module and press the add key. Arduino controls the complete processes like taking password form keypad module comparing passwords driving buzzer rotating servo motor and sending status to lcd display. It is connected to the output of relay as show in circuit diagram.

Want to carry out a project like this but wish to combine password and fingerprint together. Some examples are pir based security system rfid based security system digital lock system bio matrix systems electronics code lock. The circuit shown in fig. The libraries for fingerprint sensor and i2c lcd are easily available.

1 operates using a 12v power supply. The arduino board is connected to an lcd and a servo motor. Circuit diagram of the fingerprint door unlock system.