DetectorIR.ino

int ledPin = 13; // choose pin for the LED
int inputPin = 2; // choose input pin (for Infrared sensor)
int val = 0; // variable for reading the pin status
 
void setup()
{
    pinMode(ledPin, OUTPUT); // declare LED as output
    pinMode(inputPin, INPUT); // declare Infrared sensor as input
}
void loop(){
val = digitalRead(inputPin); // read input value
if (val == HIGH) { // check if the input is HIGH
digitalWrite(ledPin, LOW); // turn LED OFF
} else {
digitalWrite(ledPin, HIGH); // turn LED ON
}
}