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Photo interrupter module and a digital interface, built-in 13 LED build a simple circuit to 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);




digitalWrite (Led, LOW);



Additional information

Weight 10 g
Dimensions 20 × 15 × 15 mm


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