/*
 Voltaat learn (https://www.voltaat.com)
 Link for full tutorial:
 Link for libraries: There is no need for libraries

 PIR sensor alerts you when someone enters your house

 The function of this code is to obtain the reading from the PIR sensor via the Arduino input pin.
 If it is high, this means there is someone in your house.
 In this case the Arduino will send a message to the computer warning that someone has entered your home.

 Connections from the Arduino to the PIR sensor:
 • Arduino GND pin → PIR sensor GND pin (- pin)
 • Arduino pin 2 → PIR sensor out pin
 • Arduino VCC pin → PIR sensor VCC pin (+ pin)

*/

//Define the variable pirSensor to digital Pin 2
int pirSensor = 2;

//Define the variable pirSensorRead and initialize its value to 0
int pirSensorRead = 0;

//Commands inside void setup run once
void setup() {

 //Start the serial monitor at 9600 baud rate (9600 bits per second)
 Serial.begin(9600);

 //pirSensor is defined as an input
 pinMode(pirSensor, INPUT);

}

// Commands inside void loop run forever
void loop()
{
 // Read the value of digital output from rainSensor and assign it in the variable pirSensorRead
 pirSensorRead = digitalRead(pirSensor);


 if (pirSensorRead == HIGH)
 {
   //Print to serial monitor
   Serial.println("Security Alarm, There is someone in your house!");
   //Delay for 5 seconds
   delay(5000);
 }

}