Arduino/libraries/Robot_Control/examples/learn/IRArray/IRArray.ino

/*
 IR array
 
 Read the analog value of the IR sensors at the 
 bottom of the robot. The also-called line following 
 sensors are a series of pairs of IR sender/receiver
 used to detect how dark it is underneath the robot.

 The information coming from the sensor array is stored
 into the Robot.IRarray[] and updated using the Robot.updateIR()
 method.
 
 Circuit:
 * Arduino Robot
 
 created 1 May 2013
 by X. Yang
 modified 12 May 2013
 by D. Cuartielles
 
 This example is in the public domain
 */

#include <ArduinoRobot.h>

void setup(){
  // initialize the robot
  Robot.begin();

  // initialize the serial port
  Serial.begin(9600);
}

void loop(){
  // store the sensor information into the array 
  Robot.updateIR();

  // iterate the array and print the data to the Serial port
  for(int i=0; i<5; i++){
    Serial.print(Robot.IRarray[i]);
    Serial.print(" ");
  }
  Serial.println("");
}