Sensor PIR + display seven leds counter

Using Arduino Programming Questions
1

Hi people! 8)
I need some help. I'm doing the arduino. I wanna use a sensor pir, and when every time that the sensor is active (sensorPir==HIGH) a counter plus one(+1). But the problem that i have is that the counter never stop. thnks.

int pirPin = 10; 


int i =0;

void setup() {               
 
  Serial.begin(9600);
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
  digitalWrite(pirPin, LOW);
 pinMode(2, OUTPUT);  
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
 
}
void print_9(){
 // write '9'
 digitalWrite(2, 0);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 0);
 digitalWrite(6, 1);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}

void print_8(){
 // write '8'
 digitalWrite(2, 0);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}

void print_7(){
 // write '7'
 digitalWrite(2, 0);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}

void print_6(){
 // write '6'
 digitalWrite(2, 0);
 digitalWrite(3, 1);
 digitalWrite(4, 0);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}

void print_5(){
 // write '5'
 digitalWrite(2, 0);
 digitalWrite(3, 1);
 digitalWrite(4, 0);
 digitalWrite(5, 0);
 digitalWrite(6, 1);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}

void print_4(){
 // write '4'
 digitalWrite(2, 1);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}

void print_3(){
 // write '3'
 digitalWrite(2, 0);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 0);
 digitalWrite(6, 1);
 digitalWrite(7, 1);
 digitalWrite(8, 0);
}

void print_2(){
 // write '2'
 digitalWrite(2, 0);
 digitalWrite(3, 0);
 digitalWrite(4, 1);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 1);
 digitalWrite(8, 0);
}

void print_1(){
 // write '1'
 digitalWrite(2, 1);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}

void print_0(){
 // write '0'
 digitalWrite(2, 0);
 digitalWrite(3, 0);
 digitalWrite(4, 0);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 0);
 digitalWrite(8, 1);
}

  
void loop(){

     if(digitalRead(pirPin) == HIGH){
      
         print_1();   //the led visualizes the sensors output pin state
       
     }
       else 
       print_0();
  }
2

The code that you posted does not use a counter. Post the code that you are having a problem with.

3

every time that the sensor is active (sensorPir==HIGH) a counter plus one(+1).

I don't think you want to increment the counter every time the sensor IS active. I think you want to increment the counter when the sensor BECOMES active. This requires that you keep track of the previous state of the sensor, to compare to the current state of the sensor. Only when the state changes, and the state is HIGH should you increment the counter.