งานที่16 Interfacing PIR Sensor with PIC Microcontroller

อุปกรณ์

• PicKit 3
• PIR Sensor.
• PIC16F877A IC
• 40 - Pin IC holder
• Perf board
• 20 MHz Crystal OSC
• Female and Male Bergstick pins
• 33pf Capacitor - 2Nos, 100uf and 10uf cap.
• 680 ohm, 10K and 560ohm Resistor
• LED of any color
• 1 Soldering kit
• IC 7805
• 12V Adapter
• Buzzer
• Connecting wires
• Breadboard

code

#include <xc.h>

#define _XTAL_FREQ 20000000 //Specify the XTAL crystall FREQ
#define PIR RC0
#define Buzzer RB2

void main() //The main function
{
TRISB=0X00; //Instruct the MCU that the PORTB pins are used as Output.
TRISC=0Xff; //Instruct the MCU that the PORTB pins are used as Input.
PORTB=0X00; //Make all output of RB3 LOW

while(1) //Get into the Infinie While loop
{
    if(PIR ==1){
        Buzzer=1;
        __delay_ms(1000);   //Wait
    }
    else{
        Buzzer=0;
    }
}

}

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