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Security and Surveillance
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The following security and surveillance projects will help one to understand the basics of how home security and surveillane projects work. It will have topics like constructing a siren that emits audible sound once intruder comes near, alarm, 2 way intercoms system, light alarm and other surveillance projects which will be added from time to time.
Temperature Switch Project
This temperature switch uses a few discrete components to trigger a buzzer when the temperature of the surrounding increases. Suitable for use as a simple fire alarm indicator.
Simple Magnetic Contact Alarm Project
This project is a standalone simple home security monitoring project that will trigger a buzzer when the magnetic contact
is opened.
9V Door Bell Chime Project
Build Your Own Door Bell Chime using 555 timer integrated circuit, a speaker, 5 resistors, 4 electrolytic
capacitors, 1 ceramic capacitor, 3 diodes, 1 pushbutton switch and 9 V battery as power supply.
Siren Electronics Hobbies Project
Construct your own 9 V Siren based on LM358 operational amplifer(OP AMP). This powerful siren can be used to scare away unwanted visitors.
Mains Power Failure Alarm Project
This project is a power supply monitoring device that will trigger a buzzer when the mains supply cuts off. At the same time, the light emitting diode will turn ON.
Alarm Project
Construct a 6-15V Alarm by using LM/NE 556 dual timers. It will generate a noise level of 90db-110dB range.
Standalone Home Alarm Project
Construct a simple home alarm project that will trigger an alarm for a duration of up to 220 seconds once the input contact is momentarily closed.
Intercom Project
Construct your own two station Intercom Project. It uses LM386 amplifier. Each intercom station has its own battery, speaker, microphone and amplifer circuit.
Light Alarm Surveillance Project
Schematic and parts list needed to construct a simple Light Alarm. Use this to protect your medicine cabinet, cash drawer or any cabinet.
Electronic Lock Project
Construct your own Electronic Lock by using two dual D flip-flop 4013. Four secret combination of numbers are used to OPEN this combination lock.
