Arduino IR sensor - low range - c

Question

I'm programming Arduino. I have a problem with the IR sensor. It only detects this ball (equiped with IR LEDS) in range of 0,5m and I would need at least 2m. This is the ball:
"http://drgraeme.net/drgraeme-free-nxt-g-tutorials/Ch108/SoccerGenIINXTG/Soccer%20Ball/HiTechnicRCJ05V2.jpg"
and this is my arduino code:
// digital pin 2 has a pushbutton attached to it. Give it a name:
int IR = 2;
int i = 0;
int ii = 0;
int led = 0;
void setup()
{
Serial.begin(9600);
pinMode(IR, INPUT_PULLUP);
pinMode(led, OUTPUT);
}
void loop() {
i = 0;
ii = 0;
do
{
i = i + 1;
int STANJE1 = digitalRead(IR);
if(STANJE1 < 1)
{
ii = ii + 1;
}
}while(i<1000);
if(ii > 1)
{Serial.println("IS");}
else{Serial.println("IS NOT");}
}
IR sensor is 38kHZ and the balls LEDs are 40kHZ, but I found a program that allowed me to detect the ball 10m away from sensor, but It was ment for something else, and I didn't understand it, so that is not the problem.
This is the code that works further (That's because it doesn't use "DigitalRead()")
/* Raw IR decoder sketch!
This sketch/program uses the Arduno and a PNA4602 to
decode IR received. This can be used to make a IR receiver
(by looking for a particular code)
or transmitter (by pulsing an IR LED at ~38KHz for the
durations detected
Code is public domain, check out www.ladyada.net and adafruit.com
for more tutorials!
*/
// We need to use the 'raw' pin reading methods
// because timing is very important here and the digitalRead()
// procedure is slower!
//uint8_t IRpin = 2;
// Digital pin #2 is the same as Pin D2 see
// http://arduino.cc/en/Hacking/PinMapping168 for the 'raw' pin mapping
#define IRpin_PIN PIND
#define IRpin 2
// the maximum pulse we'll listen for - 65 milliseconds is a long time
#define MAXPULSE 65000
// what our timing resolution should be, larger is better
// as its more 'precise' - but too large and you wont get
// accurate timing
#define RESOLUTION 20
// we will store up to 100 pulse pairs (this is -a lot-)
uint16_t pulses[100][2]; // pair is high and low pulse
uint8_t currentpulse = 0; // index for pulses we're storing
void setup(void) {
Serial.begin(9600);
Serial.println("Ready to decode IR!");
}
void loop(void) {
uint16_t highpulse, lowpulse; // temporary storage timing
highpulse = lowpulse = 0; // start out with no pulse length
// while (digitalRead(IRpin)) { // this is too slow!
while (IRpin_PIN & (1 << IRpin)) {
// pin is still HIGH
// count off another few microseconds
highpulse++;
delayMicroseconds(RESOLUTION);
// If the pulse is too long, we 'timed out' - either nothing
// was received or the code is finished, so print what
// we've grabbed so far, and then reset
if ((highpulse >= MAXPULSE) && (currentpulse != 0)) {
printpulses();
currentpulse=0;
return;
}
}
// we didn't time out so lets stash the reading
pulses[currentpulse][0] = highpulse;
// same as above
while (! (IRpin_PIN & _BV(IRpin))) {
// pin is still LOW
lowpulse++;
delayMicroseconds(RESOLUTION);
if ((lowpulse >= MAXPULSE) && (currentpulse != 0)) {
printpulses();
currentpulse=0;
return;
}
}
pulses[currentpulse][1] = lowpulse;
// we read one high-low pulse successfully, continue!
currentpulse++;
}
void printpulses(void) {
Serial.println("\n\r\n\rReceived: \n\rOFF \tON");
for (uint8_t i = 0; i < currentpulse; i++) {
Serial.print(pulses[i][0] * RESOLUTION, DEC);
Serial.print(" usec, ");
Serial.print(pulses[i][1] * RESOLUTION, DEC);
Serial.println(" usec");
}
}