Crazy results trying to measure the time. Noob Help please!

Other Hardware Sensors
1

Hello everybody, im a noob, we are trying to measure lap times in a kart, ive tried with a 433mhz rx tx with no luck, when it comes to send INT messages, gives me error, i just can send text when detected, and now we've decided to use an IR sensor that its supposed to work like this:

sensor is on
when beam is blocked
if counter == 0
its a warm up lap and timer starts to count
if counter its different from 0
its supposed to give lap time and restart
counting

its giving an infinite loop with crazy results and just displaying
1
1
1
1

can somebody help me? below its the code, is it better to re use 433mhz sensor again??

#include <infrarrojo.h>
#include <StopWatch.h>

StopWatch vueltaKart;
infrarrojo estado(13); //DEFINICION DEL PIN DEL ARDUINO A USAR

int VALOR;             //VARIBLE QUE RECIBE EL DATO
int led =12;           //REDEFINICION DE PIN DE ARDUINO PARA LED INDICADOR DE PULSO(ESTO ES OPCIONAL)
int led_estado;        //VARIABLE

void setup() {
pinMode(led,INPUT);    //LED QUE INDICA EL ESTADO DEL LED
Serial.begin(9600);     //VELOCIDAD COMUNICACION SERIAL
}

void loop() {
  deteccionSensor();
Serial.print("\n leyendo estado sensor: \n");//IMPRIME MENSAJE EN PC
Serial.print(estado.lectura(VALOR));         //IMPRIME EL ESTADO DEL Vo DEL SENSOR MEDIANTE LA VARIABLE VALOR
vueltaKart.start();
delay(10000);
Serial.println(vueltaKart.elapsed());
vueltaKart.stop();
delay(50000);
}


void deteccionSensor(){
  int contador;
  while (led_estado == 1) {
    Serial.println("Tiempos de Vuelta:");
    Serial.println(vueltaKart.elapsed()); 
    vueltaKart.stop();
    vueltaKart.start();
    contador++; 
    }
    if (led_estado == 1 && contador == 0){
      vueltaKart.stop();
      vueltaKart.start();
      Serial.println("Vuelta de calentamiento");
      contador++;
      }
        
  }
2

ericklopez:
Hello everybody, im a noob, we are trying to measure lap times in a kart, ive tried with a 433mhz rx tx with no luck, when it comes to send INT messages, gives me error, i just can send text when detected, and now we've decided to use an IR sensor that its supposed to work like this:

sensor is on
when beam is blocked
if counter == 0
its a warm up lap and timer starts to count
if counter its different from 0
its supposed to give lap time and restart
counting

its giving an infinite loop with crazy results and just displaying
1
1
1
1

can somebody help me? below its the code, is it better to re use 433mhz sensor again??

#include <infrarrojo.h>

#include <StopWatch.h>

StopWatch vueltaKart;
infrarrojo estado(13); //DEFINICION DEL PIN DEL ARDUINO A USAR

int VALOR;            //VARIBLE QUE RECIBE EL DATO
int led =12;          //REDEFINICION DE PIN DE ARDUINO PARA LED INDICADOR DE PULSO(ESTO ES OPCIONAL)
int led_estado;        //VARIABLE

void setup() {
pinMode(led,INPUT);    //LED QUE INDICA EL ESTADO DEL LED
Serial.begin(9600);    //VELOCIDAD COMUNICACION SERIAL
}

void loop() {
  deteccionSensor();
Serial.print("\n leyendo estado sensor: \n");//IMPRIME MENSAJE EN PC
Serial.print(estado.lectura(VALOR));        //IMPRIME EL ESTADO DEL Vo DEL SENSOR MEDIANTE LA VARIABLE VALOR
vueltaKart.start();
delay(10000);
Serial.println(vueltaKart.elapsed());
vueltaKart.stop();
delay(50000);
}

void deteccionSensor(){
  int contador;
  while (led_estado == 1) {
    Serial.println("Tiempos de Vuelta:");
    Serial.println(vueltaKart.elapsed());
    vueltaKart.stop();
    vueltaKart.start();
    contador++;
    }
    if (led_estado == 1 && contador == 0){
      vueltaKart.stop();
      vueltaKart.start();
      Serial.println("Vuelta de calentamiento");
      contador++;
      }
       
  }

Hi,

try to use a global variable for contador instead of a local variable in the function. You are updating this variable each time you run the function so each time step.

3

Thank you sooo much for your super fast reply!
you mean to #define contador ?? still prints out

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1
1
1

thank you, im sorry i know i sound too stupid but i just cant figure it out

4

hi,
no define before the setup function: int contador.
It should be an variable. When you do #define contador ("put a value")
you make a macro. A value that is stored and can not be changed by the program when running. While when you do int contador;
your program can change the value when running

5

can you please show me how would that be in code please

6

ericklopez:
can you please show me how would that be in code please

#include <infrarrojo.h>
#include <StopWatch.h>

StopWatch vueltaKart;
infrarrojo estado(13); //DEFINICION DEL PIN DEL ARDUINO A USAR

int VALOR; //VARIBLE QUE RECIBE EL DATO
int led =12; //REDEFINICION DE PIN DE ARDUINO PARA LED INDICADOR DE PULSO(ESTO ES OPCIONAL)
int led_estado; //VARIABLE
int contador;
void setup() {
pinMode(led,INPUT); //LED QUE INDICA EL ESTADO DEL LED
Serial.begin(9600); //VELOCIDAD COMUNICACION SERIAL
}

void loop() {
deteccionSensor();
Serial.print("\n leyendo estado sensor: \n");//IMPRIME MENSAJE EN PC
Serial.print(estado.lectura(VALOR)); //IMPRIME EL ESTADO DEL Vo DEL SENSOR MEDIANTE LA VARIABLE VALOR
vueltaKart.start();
delay(10000);
Serial.println(vueltaKart.elapsed());
vueltaKart.stop();
delay(50000);
}

void deteccionSensor(){

while (led_estado == 1) {
Serial.println("Tiempos de Vuelta:");
Serial.println(vueltaKart.elapsed());
vueltaKart.stop();
vueltaKart.start();
contador++;
}
if (led_estado == 1 && contador == 0){
vueltaKart.stop();
vueltaKart.start();
Serial.println("Vuelta de calentamiento");
contador++;
}

}

7

same thing my brother... In Serail Monitor it
shows

1
just one time...

can somebody help me with a code that
only prints the time when a whole lap has passed between sensor is blocked one time and another and so forth and so on...

please please anybody