// IR Sensor with Arduino
// Techatronic.com  
 void setup()  
 {  
 Serial.begin(9600); // sensor baud rate  
 pinMode(6,OUTPUT);  // LED  
 pinMode(7,OUTPUT);  // BUZZER  
 }  
 void loop()  
 {  
 int s1=analogRead(A0); //ANALOG PIN FOR SENSOR  
 Serial.println(s1);   // see the value in serial monitor in Arduino IDE  
 delay(100);  
 if(s1>200 )  
 {  
 digitalWrite(6,HIGH);  // LED ON  
 digitalWrite(7,HIGH);  // BUZZER ON  
 }  
 else  
 {  
 digitalWrite(6,LOW);  // LED OFF  
 digitalWrite(7,LOW);  // BUZZER OFF  
 }  
 }