Luggage Security Alarm System
This circuit utilizing a 555 timer IC can be used as an alarm system to prevent the theft of your luggage, burglars breaking into your house etc. The alarm goes ON when a push pull switch, on which luggage is placed releases.
The circuit is straightforward. It uses a 555 IC wired as an astable multi vibrator to produce a tone of frequency of about 1kHz which gives out a shrill noise to scare awaythe burglar.
Four small push buttons are used as sensor to tell the presence of luggage. You can even use single strands of copper form a power cable.
The circuit operates on a wide range of voltages from 5V to 15V.The speaker and the circuit could be housed inside a tin can with holes drilled on the speaker side for the sound to come out.
|Luggage Security Alarm System|
|S. No.||component Name||Quantity|
|1||Battery (+9v) with Cap||1|
|3||NE555 Timer IC||1|
|4||Berg Strip 2 Pin||1|
|14||DC Socket M/F||1|
|16||PCB 4×4 inch||1|