Password Based Door Lock System using 8051 Microcontroller

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Presentation transcript:

Password Based Door Lock System using 8051 Microcontroller Abdullah Umar Nasib 14301115, Section 02 Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Topics to be covered... Basic Concept Components Pin Diagram & Circuit Design Door Lock System Algorithm Advantages Drawbacks Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Basic Concept … Main component 8051 microcontroller Will have predefined password Check the given password in 4x3 matrix keypad Correct password will open the lock otherwise locked Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Pin Diagram & Circuit Design… Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Components… A 8051 microcontroller 8051 programming board Programming cable DC battery or 12V,1A adaptor 4×3 matrix keypad 16×2 LCD & 5V Relay Connecting wires DC motor BC 547 Transistor 10k, 330 Ω resistor (1/4 watt) 10uF electrolytic capacitor 33pF capacitors – 2 12MHz Crystal Pot 10k (1/4 watt) – 1 Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Components (Software)… Keil compiler Flash magic Proteus Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Electronic Code Lock System Circuit Design Reset Circuit Design: Ensuring the power supply does not fall below 1.2V and reset pulse >100ms. Oscillator Circuit Design: Used to provide signal from external clock to microcontroller. Uses two capacitors ranging 20-40 pF. Compilation of microcontroller code : kiel Uvision is used to write code in C. A hex file is created after after code compilation. Then circuit is designed with proteus. Then added to IC. Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

System Algorithm… PORT1 to LCD data pins Control pins to P3.5, P3.6 and P3.7 PORT2 to keypad. P3.0 to Door motor. Display enter password on LCD. Read password from the user Compare the entered password with stored password. If password is correct, "Door is opened” on LCD Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Advantages… Security Less Power Consumptions Uses of commonly available components Simple and Easy implementation Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Limitations… Low range circuit Not remotely operated Risk of forgetting password Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Thank you… Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University

Any Queries or Suggestions? Password Based Door Lock System Using 8051 MicroController || Presented to Dr. Jia Uddin || BRAC University