Password Based Door Lock System Using 8051 Microcontroller

Main Article Content

Sapna Gangrade, Abdul Muqeed, Farhan Ahmed Siddiqui, Md. Adnan Khan

Abstract

This circuit can be used as a warning device which triggers an alarm whenever the temperature exceeds a preset level.  The project is built around AT89S52 microcontroller and uses 5 volts power supply. It detects fire and automatically switches on the motor and buzzer. It can be used to detect fire and to control fire. This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

Article Details

Section
Articles