Skip to main content

Programmable Home Security Alarm System

In this project we design low cost high performance programmable home security system using few LDR’s as an input sensors. When above sensor(s) get triggered system may dial the user specified phone number (using build-in DTMF generator) and activate the high power audio alarm and lights. All the parameters of DTMF generator, audio alarm and light interface are programmed through the RS232 serial interface.


Current firmware of this system presents interactive control system through the RS232 interface. This control system consist with the menu driven configuration options, self tests, system report generators, etc.

This system also contain 5W (with 4Ω speaker) audio alarm with three selectable tone configurations, which include Police siren, Fire engine siren and Ambulance siren.

This system uses a Microchip’s PIC16F877A as a main controller, LM339 as sensor interface, UM3561 as a tone generator and μPC2002 as a speaker driver (audio amplifier). LM7805, LM7812 and LM317 voltage regulators are used to obtain +5V, +12V and +3V respectively.

All the project source codes, schematic diagrams and PCB patterns are available in google drive with terms and conditions of GNU GPL and Creative Commons - Attribution-ShareAlike 3.0 Unported license.

Comments

Without a doubt, protecting a home with a cheap, wireless house alarm is certainly better than leaving the home completely unprotected.
alarm system said…
Fire alarm is very important at home, in buildings and establishments. There are many kinds of alarm today. There are alarms that can contact fire department, paramedics and police department immediately by just touching the button. Fire alarm system is there to protect us and our investments.
home alarms said…
Burglars don't ever like home security systems so when they come across a home that has a home security system installed, they prefer to go elsewhere, hence, your possessions are kept safe.
burglar alarms said…
One very important element of having an alarm system in the house is those stickers and little signs on houses already equipped with one. More often than not, these signs have a psychological effect on potential home invaders that may help you even you ward them off even when you have forgotten to turn the system on.
Sounds like a good choice, though I think is wort it to put a lot of thought on it, is our family security we are talking about.
Dwayne o'cornor said…

Home security alarms are available on the market with different types of different means. Common home security cameras include motion sensors, digital alarms and wireless security alarms. Each type has different functions. Among those three, wireless security cameras are the most popular choice of homeowners. It totally depends on the homeowner which type to choose. They just have to make sure that they purchase it from reputable providers.

Home Security Systems
vectorobk said…
Geart Content.I have appreciate with getting lot of good and reliable information with your post.......
Thanks for sharing such kind of nice and wonderful collection......again, beautiful :) I love reading your posts. They make me happy .
Alarm Monitoring
Getting a proper surveillance is better
sajib ahmed said…

This is an informative post review. I am so pleased to get this post article. I was looking forward to get such a post which is very helpful to us. A big thank for posting this article in this website. Keep it up.
Alarm Monitoring

sarah lee said…
This comment has been removed by the author.
sabiha sultana said…

Geart Content.I have appreciate with getting lot of good and reliable information with your post.......
Thanks for sharing such kind of nice and wonderful collection......again, beautiful :) I love reading your posts. They make me happy .
Alarm Monitoring

shakil hossain said…

Therefore glad I found your website searching for shoes.
This is great information at any given time when the internet is full
of falsehoods. Keep up the task in "Link to another good article from Allen Wright" and that i can
come back often.

ea3ltd.com

Popular posts from this blog

Enable WebRTC on QtWebEngine for Raspberry Pi 3

WebRTC is a web technology to enable peer to peer communication in real-time. It mainly uses to create video conferencing and chat applications using web browsers. In this post, we describe how to enable this technology in QtWebEngine on Raspberry Pi 3 platform.

QtWebEngine is an embedded browser component which comes with the Qt framework. This component is based on Google Chromium browser and it supports most of the Chromium features including WebRTC. In PC, WebRTC applications run smoothly on QtWebEngine component. But in Raspberry Pi platform situation is different and none of the WebRTC application is work with the QtWebEngine. The only thing which we can see is a black box in an HTML5 video tag area. At the time of writing this problem exists in Qt version 5.6, 5.7 and 5.8.

BMP180 based USB atmospheric pressure monitor

We initially developed this USB atmospheric pressure monitor to study some operating characteristics of Bosch BMP180 sensor. BMP180 is a low-cost sensor for measuring barometric pressure and temperature. According to the datasheet this sensor can use to measure pressure ranging between 300hPa to 1100hPa. This sensor is introduced a couple of years back but still, it is popular due to lower cost and simplicity of its interface.


We did this unit to test the BMP180 sensor more accurately and to study its behaviors. This unit is based on PIC18F2550 microcontroller and the main reason to select this MCU is because of its built-in USB 2.0 interface.


To display sensor calibration data and it’s readings we did small windows application. This application display and plot temperature and pressure readings captured from the BMP180 sensor.

This unit is programmed to work as a USB HID device and no special device driver is required to use this device. We test this unit in Windows 10 environment.

Programmable light controller

The main objective of this project is to design a maintenance free and low-cost light which automatically turns on and off at the predetermined time of the day.

To meet the above requirement I designed this controller using ATmega8 MCU and DS1307 RTC. The driver stage of this light controller is intended to work with commonly available 7W LED modules.


The core component of this programmable light is ATmega8 low power CMOS microcontroller. The main reason to select this microcontroller is it’s lower cost and higher availability. Except for the above two reasons this microcontroller also bundled with a rich set of peripherals which including 23 GPIOs, 3 independent timers, Two-wire serial interface, EEPROM, etc.

Apart from ATmega8 microcontroller, this system uses DS1307 real time clock to maintain system time. Like ATmega8, DS1307 is also a very popular RTC in the market.

This controller is designed to work with a 24V DC power supply. The main reason to select 24V is that most of the…