Arduino - Sensor Pir que active mi cámara réflex

int outPin = 7;

int pulseWidth=0;

void setup()

{

pinMode(outPin,OUTPUT);

 Serial.begin(9600);

}

void SendPulse(int pulseWidth)

 {

int reps = pulseWidth/23.6;

for(int i=0;i<=reps;i++)

 {

 digitalWrite(outPin,HIGH);

 delayMicroseconds(11);

 digitalWrite(outPin,LOW);

 delayMicroseconds(5);

 }

}

void SendSequence()

 {

for(int i=0;i<2;i++)

 {

 SendPulse(2000);

 delay(27);

 delayMicroseconds(800);

 SendPulse(500);

 delayMicroseconds(1500);

  SendPulse(500);

 delayMicroseconds(3500);

 SendPulse(500);

 if(i<1)

 {

 delay(63);

 }

 }

 }

void DoPhotoLoop(int reps, int timeInterval)

 {

  for(int i=0;i<=reps;i++)

 {

 SendSequence();

 delay(timeInterval*1000);

 }

}

void loop(){

while (Serial.available()==0);

Serial.read();

DoPhotoLoop(1,0);

}