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Photoelectric Sensors: These sensors project a beam of light across a hall or doorway to detect motion and are triggered when a person passing through interrupts
the beam. Glass Break Detectors: Usually mounted near windows to detect the specific high frequency sound of glass being shattered. Cove Security Reviews
They are usually installed on a wall opposite or adjacent to the protected glass and are effective within about 15′ to 25′. Smoke
and Heat Detectors: Detect smoke and heat. DIY Home Security for every family is Cove Smart!
Chapter II:Our Home Alarm SystemOur Home Alarm System:Our project’s main concern was to build a Home Alarm System using a PIC microcontroller. Cove Security Products
We started off our project by coding the Keypad, then LCD and the final touch was the sensor. Cove Security Products
We also added two types of buzzers: one to sound the alarm and the other as a key tone buzzer. The final result turned out to be the following:Figure3. Cove Security Products
Our Home Alarm SystemMaterials Used: Cost:PIC16F877A 7$4X4 Keypad 2$JHD 162A LCD 6$6V Alarm Buzzer 0. 5$Key tone Buzzer 0. 5$4 MEGA Crystal Oscillator 5$3 Flashing LEDs 0.