A 10mm Photo Interrupter Module that can be used to build a simple circuit that produces a photo-interrupter warning lamp. It is composed of an infrared emitter on one upright and a shielded infrared detector on the other. By emitting a beam of infrared light from one upright to the other, the sensor can detect when an object passes between the uprights, breaking the beam.

This 10mm Photo Interrupter Module is used for many applications including optical limit switches, general object detection, parts counting, etc. Due to the photo interrupters larger width (10mm), it has different application possibilities compared to the smaller ARD2-2210.

Test 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

// When the light sensor detects a signal is interrupted, LED flashes
if (val == HIGH) {
digitalWrite(Led, HIGH);
}
else {
digitalWrite (Led, LOW);
}
}