Fingerprint Door Lock Using Arduino Uno

You can add a solenoid instead of this led and make a fingerprint door lock which could be a brief tutorial for the future but for this tutorial led indication is our eureka.

Fingerprint door lock using arduino uno. Introductionthe fingerprint door lock as the name suggests is an electronic door lock that can be installed on almost any access point in your house. Using pwm the master can send different voltages to the slave. For connecting the keypad with the arduino we are using both analog and digital pins. Conclusion in this tutorial post we learned how to set up a fingerprint sensor and how to use it with our arduino you can use this knowledge to control a.

This simple fingerprint door unlock project using arduino can be very useful for door security forensics crime investigation personal identification attendance system and much more. Digital door lock using arduino circuit diagram. If you are using arduino mega then there is no need to use analog. First of all connect the fingerprint sensor to the arduino uno.

In that i am using 2 3 digital pins of arduino for data transfer to the fingerprint i tried other pin configurations for this but it didn t work but as i am connecting lcd it also requires same 2 3 digital pins of arduino and it is not possible for me to use 2 and 3 pins of arduino for both lcd and fingerprint sensor for data transfer. The default pins for serial communication on the arduino uno are pin 0 rxd and pin 1 txd of the board but we are going to use other pins for serial communication. I am using fingerprint module r307 and lcd together. Make sure you get a fingerprint sensor that works with the arduino through the serial communication.

First of all we will make the connection to the 4 4 keypad. Not only to ensure door security this project also make certain to assist in fields like forensics crime investigation personal identification attendance system and there is a lot more. Therefore there is one master arduino which controls the servo oled and fingerprint sensor while a slave arduino controls the leds. It uses a keypad and fingerprint scanner to grant a user access by controlling an electric door s.

In the future there could be many more applications like fingerprint based driving licences bank accounts operation and so on. We used analog pins since we need more that 14 digitals pins for this project. Define servopin 9 define pin number to which servo motor is connected define durationtime 3000 define the time it remains in the open position of the door lock miliseconds define servomin 0 open position define servomax 90 closed position. Adafruit fingerprint finger adafruit fingerprint myserial.