Password Based Door Lock System Using Arduino Circuit Diagram

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Password based door lock system using arduino circuit diagram.

In this circuit we have used multiplexing technique to interface keypad for input the password in the system. Combination locks have been there for decades and many products such as briefcase doors are protected by them. There is keypad module for arduino that can help us to set combination password for various things you may also use rfid cards to provide access and in this tutorial i am going to explain how you can make push button combination lock. Arduino software constantly scans the keypad to see if a button is pressed.

If you want to learn how to make a schematic and pcb then watch my tutorial given below. The code for password based door lock security system using arduino keypad is given below. The schematic diagram of the electronic door lock system is shown in fig. This is the complete circuit diagram of the password protected door lock security system designed in cadesoft eagle 9 1 0 version.

Here we are using 4x4 keypad which contains 16 key. Arduino receives parallel data from the keypad. If we want to use 16 keys then we need 16 pin for connection to arduino but in multiplexing technique we need to use only 8 pin for interfacing 16 keys. Here an at89c52 microcontroller is used and it is an 8 bit controller.

Upon receiving a valid code input digital pin d4 goes high and fires up the solenoid lock for five seconds. Password based door lock security system using arduino and keypad password based door lock security system usin. Password based door lock system using arduino simulino uno schematic diagram read nfc ring lock box using arduino the key pad library for the arduino uno available in this linkkeypad this library is setup to do every function for the keypad. The simply compile it then finally upload it to the atmega328 microcontroller.

Testing the fingerprint door lock using arduino project. Password door lock security system circuit diagram. After installing the apk and connecting the hardware as per the circuit diagram connect the arduino to the laptop and upload the code remove the tx rx pins before uploading the code.