Home Security System Using Arduino, Pir Sensor And GSM Sim900A

 Home Security System Using Arduino, Pir Sensor And GSM Sim900A 

Circuit Diagram :-

Code :-

//Prateek //www.prateeks.in #include <SoftwareSerial.h> SoftwareSerial SIM900(2, 3); String textForSMS; int pirsensor = 10; int buzzer = 9; int red = 7; int green = 8; void setup() { randomSeed(analogRead(0)); Serial.begin(9600); SIM900.begin(9600); // original 19200. while enter 9600 for sim900A Serial.println(" logging time completed!"); pinMode(pirsensor, INPUT); pinMode(buzzer, OUTPUT); pinMode(red, OUTPUT); pinMode(green, OUTPUT); digitalWrite(buzzer, LOW); digitalWrite(red, LOW); digitalWrite(green, LOW); delay(100); } void loop() { if ( digitalRead(pirsensor) == HIGH) // { textForSMS = "\Any Person in your Room Plz Check It "; digitalWrite(buzzer, HIGH); digitalWrite(red, HIGH); digitalWrite(green, LOW); sendSMS(textForSMS); Serial.println(textForSMS); Serial.println("message sent."); delay(8000); } if ( digitalRead(pirsensor) == LOW) // { digitalWrite(buzzer, LOW); digitalWrite(red, LOW); digitalWrite(green, HIGH); delay(1000); } } void sendSMS(String message) { SIM900.print("AT+CMGF=1\r"); // AT command to send SMS message delay(1000); SIM900.println("AT + CMGS = \"+918830584864\""); // recipient's mobile number, in international format delay(1000); SIM900.println(message); // message to send SIM900.println((char)26); // End AT command with a ^Z, ASCII code 26 delay(1000); SIM900.println(); // give module time to send SMS }