// Item Two—Sensor Light int sensorPin = 2; // IR sensor to be attached to digital pin NO.2 int ledPin = 13; // Digital Piranha LED-R to be attached to digital pin NO.13 // variable sensorState for storing statistics about the status of the sensor int sensorState = 0; void setup() { pinMode(ledPin, OUTPUT); // LED is the output unit pinMode(sensorPin, INPUT); // Sensor is the input unit } void loop(){ // Read statistics collected from the sensor sensorState = digitalRead(sensorPin); // If it is HIGH, LED light will be turned on if (sensorState == HIGH) { digitalWrite(ledPin, HIGH); } else { // If it is LOW, LED light will be turned off digitalWrite(ledPin, LOW); } }