Code and circuit diagram for fingerprint sensing door locking system july 3 2019 january 22 2020 admin 0 comments.
Block diagram fingerprint door lock circuit diagram.
Want to carry out a project like this but wish to combine password and fingerprint together.
It is nothing new but almost similar to an electromagnet.
If you want to buy the entire combo for the project then click here enrollment code code 1 include adafruit fingerprint h include softwareserial h.
History of fingerprint scanners this identification device has been commercialized from the late 19 th century.
An arduino microcontroller mcu requires only 5v but the solenoid electric lock requires 12v.
Download the project libraries.
Electronic door lock solenoid arduino fingerprint sensor lock.
As arduino uno has an inbuilt 5v voltage regulator a common 12v supply can be used for the whole system.
Armature surrounded by a big coil of copper wire forms a solenoid.
For controlling the door lock you will need a battery source from 7 to 12v i used three 18650 cells.
To add a fingerprint just show the finger on the module and press the add key.
A slug of metal i e.
The libraries for fingerprint sensor and i2c lcd are easily available.
It is connected to the output of relay as show in circuit diagram.
Fingerprint door lock circuit diagram.
Circuit diagram of the fingerprint door unlock system.
Can you pls help with the circuit diagram and the list of components.
1 operates using a 12v power supply.