People counter sketch with Arduino

next	       count	      output
		120		1
+26		146		0
+26		172		1
+26		198		0
+26		224		1
+26		250		0
+26		276		1
+26		302		0
+26		328		1
+26		354		0
+26		380		1
		406		0

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: 2000,000 kHz
// Mode: Normal top=FFFFh
// OC1A output: Toggle
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer 1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: On
// Compare B Match Interrupt: Off
OCR1AL=0x78;
OCR1AH=0x00;
TCCR1A=0x40;
TCCR1B=0x02;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// and then inside the compare matchA interrupt
if (OCR1A>=406) { TCNT1=0; OCR1A=120;}
else if (OCR1A>=120) OCR1A+=26;

#include <TimerOne.h>

unsigned long now;
unsigned long then = 0;
unsigned long interval = 2500000;
unsigned long pwminterval = 5000000;

void setup(){
  pinMode(9, OUTPUT);
  Timer1.initialize();
  digitalWrite(13,HIGH);

}

void loop(){
  now = micros(); //variable to store the read value
  if (now - then > interval){
    Timer1.pwm(9,512,100000);}
  if (now - then > pwminterval){
    digitalWrite(9,LOW);
    then = now;
    }
    
}

/* People counter sketch baby!
 */

// constants won't change. Used here to 
// set pin numbers:
const int ledPin =  9;      // the number of the LED pin

// Variables will change:
int ledState = LOW;             // ledState used to set the LED
long previousMicros = 0;        // will store last time LED was updated
long then = 0; //stores value of now when it was last updated

// the follow variables is a long because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long interval = 13 ;           // interval at which to blink (microseconds)
long pause = 520; // pause between pulsing
long pausepulse = 2080; //time from beginning of pause till end of pulsing

void setup() {
  // set the digital pin as output:
  pinMode(ledPin, OUTPUT);      
}

void loop()
{
  // here is where you'd put code that needs to be running all the time.

  // check to see if it's time to blink the LED; that is, if the 
  // difference between the current time and last time you blinked 
  // the LED is bigger than the interval at which you want to 
  // blink the LED.
  long now = micros();
  
  if (now - then >= pause && now - then <= pausepulse){
    unsigned long currentMicros = micros();
 
    if(currentMicros - previousMicros > interval) {
    // save the last time you blinked the LED 
    previousMicros = currentMicros;   

    // if the LED is off turn it on and vice-versa:
    if (ledState == LOW)
      ledState = HIGH;
    else
      ledState = LOW;

    // set the LED with the ledState of the variable:
    digitalWrite(ledPin, ledState);
    }}
  if (now - then >= pausepulse){
    then = now;}
  
  }