Fingerprint Door Lock Using Arduino Circuit Diagram

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. Make sure you get a fingerprint sensor that works with the arduino through the serial communication. Circuit diagram of the fingerprint door unlock system the brain of the circuit is arduino uno mcu board board1.

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Fingerprint door lock using arduino circuit diagram.

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. The project arduino fingerprint sensor lock is simply fabricated around arduino board. I am using fingerprint module r307 and lcd together. First of all we will make the connection to the 4 4 keypad.

Circuit diagram explanation digital door lock using arduino circuit diagram. First of all connect the fingerprint sensor to the arduino uno. Code and circuit diagram for bluetooth rc car using arduino. For connecting the keypad with the arduino we are using both analog and digital pins.

It is based on atmega328 atmega328p and has 14 digital input output i o pins six analogue inputs 32k flash memory 16mhz crystal oscillator a usb connection power jack icsp header and reset button among others. Code and circuit diagram for fingerprint sensing door locking system july 3 2019 january 22 2020 admin 0 comments. We used analog pins since we need more that 14 digitals pins for this project. 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.

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