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how to make computer security using hardware at your home




Circuit:



Download Programming and Circuit:


#include <SoftwareSerial.h>



//Alarm reciever's phone number with country code


const String PHONE = "Enter_Your_Phone";



#define rxPin 2 //GSM Module TX pin to Arduino 2


#define txPin 3 //GSM Module RX pin to Arduino 3


SoftwareSerial sim800(rxPin,txPin);



//the pin that the sensor is atteched to


int sensor = 11;



void setup() {


pinMode(sensor, INPUT);


Serial.begin(115200);



sim800.begin(9600);


Serial.println("SIM800L software serial initialize");



sim800.println("AT");


delay(1000);


}



void loop(){



while(sim800.available()){


Serial.println(sim800.readString());


}


while(Serial.available()) {


sim800.println(Serial.readString());


}


int val = digitalRead(sensor);


if (val == HIGH) {


//state = HIGH;


Serial.println("Motion detected!");


Serial.println("calling....");


delay(1000);


sim800.println("ATD"+PHONE+";");


delay(20000);


}


}




Demo Video:


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