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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.
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Comments

cheap alarm system said…
Without a doubt, protecting a home with a cheap, wireless house alarm is certainly better than leaving the home completely unprotected.
December 4, 2010 at 3:26 PM
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.
December 6, 2010 at 5:31 PM
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.
August 18, 2011 at 8:20 AM
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.
November 9, 2011 at 11:47 PM
guardian alarm system said…
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.
September 5, 2012 at 9:24 PM
Unknown 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
October 4, 2012 at 9:42 AM
vectorobk said…
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Alarm Monitoring
December 10, 2012 at 8:59 AM
surveillance and security said…
Getting a proper surveillance is better
December 10, 2012 at 10:41 AM
sarah lee said…
This comment has been removed by the author.
January 29, 2013 at 4:04 PM
Unknown said…

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Thanks for sharing such kind of nice and wonderful collection......again, beautiful :) I love reading your posts. They make me happy .
Alarm Monitoring

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March 14, 2013 at 9:12 AM
Jhon Walker said…
Wow that's great informative blog post. I appreciate your efforts and share your research with us. I like this low cost high performance programmable home security system. Nowadays i use wireless burglar alarm over 7 years and i feel relaxed with its working. You can secure your home and business with smart home security devices.
August 31, 2019 at 6:13 PM
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