Oct 2011
safe home secure
We started off our project by coding the Keypad, then LCD and the final touch was the sensor. 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.