21. 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. 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. 1$18 Pico Capacitors 1$Magnetic Sensor 2$Input VoltageWires 0. 1$Breadboard 3$Total Cost: 27. 3$Process of Building:First of all the PIC:PIC is a family of Harvard architecture microcontrollers. The name PIC refers to “Peripheral Interface Controller”. They are popular with both professional developers and hobbyists alike due to their low cost, wide availability and large user base.
Loading Feb 20, 2020 · But your home’s design should be personal, especially if you live alone and have no one to compromise with.
wireless security home system
We won’t get too much into the deeper technical aspects in this piece.