Arduino: IR remote/ intervalometer for Nikon D80 DSLR (that means timelapse photography yarrr!)

/*
 
LUCKYLARRY.CO.UK - IR Remote control for Nikon using Arduino
 
Mimics the infrared signal to trigger the remote for any Nikon camera
which can use the ML-L1 and ML-L3 remotes. Can be used as an intervalometer
for time lapse photography.
 
The IR sequence I used is originally taken from: http://www.bigmike.it/ircontrol/
 
You should be able to use my pulse methods to alter to suit other cameras/ hardware.
 
micros() is an Arduino function that calls the time in Microseconds since your program
first ran. Arduino doesn't reliably work with microseconds so we work our timings by
taking the current reading and then adding our delay on to the end of it rather than rely
on the in built timer.
 
*/
 
int pinIRLED = 13; 					// assign the Infrared emitter/ diode to pin 13
 
void setup() {
  pinMode(pinIRLED, OUTPUT); 				// set the pin as an output
}
 
// sets the pulse of the IR signal.
void pulseON(int pulseTime) {
  unsigned long endPulse = micros() + pulseTime; 	// create the microseconds to pulse for
  while( micros() < endPulse) {
    digitalWrite(pinIRLED, HIGH); 			// turn IR on
    delayMicroseconds(13); 				// half the clock cycle for 38Khz (26.32×10-6s) - e.g. the 'on' part of our wave
    digitalWrite(pinIRLED, LOW); 			// turn IR off
    delayMicroseconds(13);  				// delay for the other half of the cycle to generate wave/ oscillation
  }
 
}
 
void pulseOFF(unsigned long startDelay) {
  unsigned long endDelay = micros() + startDelay;	// create the microseconds to delay for
  while(micros() < endDelay);
}
 
void takePicture() {
  for (int i=0; i < 2; i++) {
    pulseON(2000); 					// pulse for 2000 uS (Microseconds)
    pulseOFF(27850); 					// turn pulse off for 27850 us
    pulseON(390); 					// and so on
    pulseOFF(1580);
    pulseON(410);
    pulseOFF(3580);
    pulseON(400);
    pulseOFF(63200);
  }							// loop the signal twice.
}
 
void loop() {
  takePicture(); 					// take the picture
  delay(5000);   					// delay in milliseconds which allows us to do timelapse photography - 1 second = 1000 milliseconds
}