const int trigPin = 11; 
const int echoPin = 12; 
const int ledPin = 2;
long duration; 
int distance; 




void setup() {
pinMode(trigPin, OUTPUT);                                         
pinMode(echoPin, INPUT);    
pinMode(ledPin, OUTPUT);                                            
Serial.begin(9600);                                               
}
void loop ()
{
digitalWrite(trigPin, LOW);                                                        
delay(2); 
digitalWrite(trigPin, HIGH); 
delay (10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH); 
distance= duration*0.034/2;                                          
if (distance > 59)			 
{
	digitalWrite (ledPin, LOW);		
}
else			
{	 
digitalWrite (ledPin, HIGH);		
}
}