Hello,

Here's a circuit for PIR sensor.

I have created an Alarm sound that beeps 6 times when a motion is detected.

Connect the Circuit as shown in the Image.

PIR sensor reads the Input signal.

Buzzer writes the output signal. (Buzzing noise)

Video Link provided here :

https://www.youtube.com/watch?v=L_-hoWJNAoQ&t=72s

Supplies

Step 1: Programming for Arduino

Here's the block of code :

int inSignal = 2; //input signal
int outSignal = 3; //output signal

void setup() {

Serial.begin(9600);

pinMode(inSignal, INPUT); //PIR is connected

pinMode(outSignal, OUTPUT); //Buzzer is connected

}

void loop() {

// read the input pin: int buttonState = digitalRead(inSignal);

// print out the state of the button:

if(buttonState==HIGH)

{

for(int i = 0; i<6; i++){//looping on/off sound 6 times

digitalWrite(outSignal, HIGH);

delay(300);

digitalWrite(outSignal, LOW);

delay(300);

Serial.println("Motion Detected!");

}

else{

Serial.println("No Motion Detected");

digitalWrite(outSignal, LOW);

}