/* photo interrupt sensor module test code
 * tutorial and circuit url : http://osoyoo.com/?p=632
 */
int Led=13; 
int val; 
void setup()
{
pinMode(Led,OUTPUT); 
pinMode(3,INPUT); 
}
void loop()
{
val=digitalRead(3); 
if(val==HIGH) 
{
digitalWrite(Led,HIGH);
}
else
{
digitalWrite(Led,LOW);
}
}