Content:-●Introduction●Components Description:- Arduino UNO, Servo Motor, Bluetooth module●Block Diagram●Circuit Diagram● Working●Advantages & Disadvantages●Future Extensions●References

BLUETOOTH CONTROLLED SECURITY LOCK SYSTEM

Made by:- Mayank Dubey

Introduction●The project is made using Arduino UNO Programmer.●Programming is done using Arduino software in modified embedded C language.●Instructions are provided through Bluetooth connectivity with smart devices.●Door lock is unlocked using servo motor connected to mechanical lock.

Component Description●Arduino UNO

●Servo Motor

●Bluetooth Module

●Mechanical Lock

ARDUINO UNO●This is programming board which is universally used for Embedded system project programming.

●It has 6 analog pins and 13 digital pins. Out of these digital pins 6 pins are PWM inputs.

●The programming is done under arduino software .

●The programme is Imported in any of the IC s among this Atmega 328, Atmega 168 etc. according to memory requirements by usingthis board.

Servo motor●Servo motors are ordinary geared dc motors equipped with servo mechanism for precise control of angular position. ●It is 3 pin motor first is GND, second is +5v dc and last is controller pin used for designing motion of motor.●It can be used to push or pull more and more weight according to its design. (high torque)●These are generally use to design robotics arms, rotatory motion joints etc.

Bluetooth Module ● HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. ●It has 6 pins out of which commonly 4 pins are used; VCC, GND, TX & RX.●It has low Power Operation (1.8 to 3.6V I/O)● It has UART interface with programmable baud rate and integrated antenna.

Block Diagram

Aurdino UNOServo Motor

LED light

Door lockPower supp ly

Bluetooth Module

Circuit Diagram

WorkingThis Bluetooth controlled security system is designed in such a way that one can access the door lock smartly through the Bluetooth connectivity to the device. It can also be accessed through wearable smart devices , with a connection key for wireless communication between smart device and the circuit.This unlocking of security lock is done in steps given below :●Step1- As we connect the Bluetooth to the device, and give instructions, program of servo motor gets activated.●Step2- On activation of program servo motor starts rotating according to the programmed angular rotations.●Step3- As the motor head rotates, the security lock which is connected with motor head through a string gets pulled and lock opens.

Advantages●Cheap, compact and feasible.●Easy to programme and use with a single board.●Precise control of angular rotation with servo mechanism.●Easily mountable on small areas as it has compact design and can be operated by small voltage. (5v - 9v).●It can be extended further with the Password protection, Wi-Fi or Ethernet connectivity.●Low power consumption.●Simple circuitry.●Ease of deployment.

●Performance drops with long term usage.●Moisture and heat can affect the performance of the circuit and functionality of the system.

Disadvantages

Future Extensions The security lock can be designed in following manners:-●Password protected security lock.●RFID recognition.●WIFI connection with server.●Ethernet connection to the LAN.●The most secure way- Biometric (Finger Print) scanning.

References●www.wikipedia.com●www.instructables.com●www.arduino.cc

THANK YOU