Alarm Circuit Built for Motorcycles

The circuit was designed to create an early warning alarm system against any form of theft that is significant to the owners of motorcycles or bikes.

Alarm System for Entrance/Exit Gate

The circuit employs the functions of reed switches to produce a gate alarm that is powered by a universal AC/DC power supply

Buzzer Circuit with Unique Functionality

The circuit was constructed using a few components to produce a unique buzzer with adjustable buzzer tones.

Burglar Alarm Control Keypad

The circuit was designed to illustrate the operation of an electronic keypad to be utilized in the burglar alarm system by having five keys as the security syntax.

Single-Zone Automatic Burglar Alarm System

The circuit was designed to provide an alarm system against any form of burglary based on the operation of CMOS 4011 where a high output would only result when any of the input is low.

Water Triggered Alarm System Using 555 Timer

The circuit was designed sensitive enough to trigger and activate the alarm upon sensing wetness, moisture or dampness on its probes.