Photo Interrupter Module KY-010

Photo interrupter module and a digital interface, built-in 13 LED build a simple circuit to produce.photo-interrupter warning lamp   

It comes with digital interfaces of the LED, the light blocking access number 3 sensor interfaces,sensing when the light interrupter   

Device senses a key signal, LED lights, otherwise off.   

Routines source code:   

int Led = 13 ;// define LED Interface   

int buttonpin = 3; // define the photo interrupter sensor interface   

int val ;// define numeric variables val   

void setup()   
{   
pinMode (Led, OUTPUT) ;// define LED as output interface   
pinMode (buttonpin, INPUT) ;// define the photo interrupter sensor output interface   
}   
void loop ()   
{   
val = digitalRead (buttonpin) ;// digital interface will be assigned a value of 3 to read val   
if (val == HIGH) // When the light sensor detects a signal is interrupted, LED flashes   
{   
digitalWrite (Led, HIGH);   
}   
else   
{   
digitalWrite (Led, LOW);   
}   
}

Reference Code: KY-010